eChapters

Introduction

Agricultural research and development in the past 50 years has primarily focused on increasing productivity through intensification of input use to  maximize grower income and  minimize hunger and food shortage (Andow et al., 2009). The full environmental costs of this policy such as water and soil pollution, soil and resources impoverishment (Tegtmeier & Duffy, 2004), only recently became apparent, and this awareness has led to the beginning of a change in philosophy away from purely production-oriented practices towards those that are more environmentally sustainable (Alexanian, Metera, & Schuler, 2009). In addition, agriculture and its interactions with the natural environment have begun to emerge more strongly in political, economic and social agendas reflecting the increasing importance of sustainability to consumers. Consumers are now demanding food that are of high quality, locally produced, regionally specialized, organic, fairly traded, and are humanly and ethically produced. Achieving all or some of these goals with fewer resources is now the objective of modern sustainable agriculture (Mason, 2003).

Azolla, a fresh water fem is a rich source of nitrogen especially for low land rice farming. It is found in rice paddies in many tropical countries like China, India, Korea, Philippines and Vietnam. The agronomic importance of Azolla lies in its ability to fix atmospheric nitrogen through the symbiotic association with a blue-green alga, Anabaena azolae. The symbiotic association can fix nitrogen proportional to its biomass produced. When Azolla is grown in paddy f ields and subsequently incorporated as green manure, the nitrogen contained within Azolla biomass is mineralized during the process of decomposition.

Azolla is a genus of small aquatic fern comprising 7 living and 25 fossil species, which is globally distributed. It occurs on still water ponds, lakes, swamps, lagoons and paddy fields in both tropical and temperate regions. Because of its rapid growth, high nitrogen percent and its ability to grow in stagnated waters, it has been used as organic manure in Vietnam and China for centuries. Its use in India and other countries is relatively recent. Azollla pinnata is native to India and widely distributed.

Introduction

Conventional agriculture is highly dependent on fossil fuel based mineral fertilizers to compensate for removal of plant nutrients by crops. Chemical fertilizers are not only in short supply but also are very costly. The preparation and use of organic manures are not being practiced in a scientific manner to harness the plant nutrients removed by plants, animals and humans.

The application of chemical fertilizers to soil alone and in an imbalanced way has resulted in deterioration of soil health and its quality. The use of chemical fertilizers has to be reduced to check the soil and water pollution and simultaneously the role of soil microorganisms has to be augmented by different ways such as greater use of biofertilizers. Moreover, the demand for organic food particularly both in developed and developing countries is on rise which opens up immense possibility to use organic manure and biofertilizers for production of foods grains, fruits, vegetables, spices, tea and coffee. Therefore, the production and the use of biofertilizers assumes greater significance and could be an excellent biological alternative to chemical fertilizers.

In spite of considerable progress achieved during the last four decades in vegetable production in India, average productivity of vegetable crops is still low as compared to national and world level, indicating the scope to enhance their yield potential of quality produce. This is because of an appealing gap between potential yield and actual yield. In many vegetables, yield realized is even lesser than 50 % of potential yield. Sometime, farmers growing vegetable crops during main season do not get back their cost of cultivation. The prices of the same vegetable produce is very high during off-season. Several biotic and abiotic stresses are major factors responsible for low productivity and poor quality in different vegetable crops under open field cultivation, especifically in rainy and post-rainy seasons. The increasing demand of off-season high quality vegetables in various markets of big cities has called the attention of vegetable growers for diversification from traditional techniques of vegetable cultivation to modern systems of cultivation.

Protected cultivation of vegetable crops offers best choice for diversification. Production of crops under protected conditions has great potential in augmenting production and quality of vegetables, in main and off-season, maximizing water and nutrient-use efficiency under varied agroclimatic conditions. This technology has great potential especially in peri-urban areas, since it can be profitably used for growing high- value vegetables like tomato, cheery tomato, coloured Capsicum and parthenocarpic cucumbers, and healthy and virus-free seedlings in agri-entrepreneurial models.

Orchids are perennial ornamental crop, grows well in shady and humid places in wild habitat. The same growing conditions can be achieved by making special structures known as orchidaria or orchid houses.
Basics for Orchid House Cultivation
The following points should be considered during the construction of orchid houses:-
    ·    Topography of land.
    ·    Climate of region.
    ·    Type of soil and water.
    ·    Accessibility of area, transport and marketing facilities.
    ·    Proper drainage facilities.
    ·    Availability of good quality irrigation water.
    ·    A good infrastructure like availability of electricity.

8.1 INTRODUCTION

Amaranth is one of the oldest food crops in the world, with evidence of its cultivation reaching well back to 6700 BC. The genus Amaranthus consists of nearly about 60 species, which includes leafy vegetables, vegetables for grains, ornamental plants as well as weeds. The word amaranth has actually been derived from the Greek word amarantos, which means unwithering and the people who used it symbolize immortality. The Hindi term for amaranth, Ramdana, means God’s own grain. Amaranthus tricolor L. is the most common species grown as leafy vegetable during summer and rainy season in India but it can be grown throughout the year. It fits well in crop rotations because of its very short duration and large yield of edible matter per unit area. The estimation of the extent of its cultivation is not available. Green or leafy types are usually grown in kitchen and market garden. Amaranth is more widely used as a potherb. The grain Amaranthus species are popular in the high lands of tropical and sub-tropical America. It is gaining importance in the Indian plains also, particularly in Gujarat and Maharashtra. Grain types are usually grown as mixed crops along with cereals, pulses and vegetables.

The leaves and tender stems of Amaranthus are rich in protein, minerals, vitamin A and vitamin C. A 100g of edible portion of Amaranthus consists of Protein 4.0 g, Calcium 397 mg, Iron 25.5 mg, Magnesium 247 mg, Phosphorus 83 mg, Potassium 341 mg, Sulphur 6 mg, Vit C 99 mg and Vit A 9200 IU. Besides, the soft fibrous matter provides necessary roughage in the diet

The fresh tender leaves and stem of Amaranthus are delicious when cooked and consumed like other leafy vegetables. The tiny seeds of grain Amaranthus are parched and milled for flour. Amaranthus flour compares favourably with other cereals in taste, nutritional value and yield. The grain Amaranthus is a rich source of protein and essential amino acids like lysine, leucine and isoleucine which are required for growth of children. In spite of several advantages of amaranth as leafy vegetable, both its stems and leaves also contain the anti-nutritional factors such as nitrate and oxalate, which can be removed by cooking with ample water. In general, the presence of oxalates causes the kidney stone, while that of nitrates causes methaemoglobin in blood. Therefore, it is recommended not to consume leaves of more than 200 g/day/head.

Botanical Name: Areca catechu L. Family: Arecaceae / Palmae Chromosome No: 32 Place of Origin: Philippines, Malay, Indonesia, Cochin, China and Malaya Peninsula Common Name: Betel nut 3.1 Introduction Arecanut (Areca catechu L.), commonly known as Supari or Betel palm or Arecanut palm, is cultivated primarily for its kernel obtained from the fruit which is chewed in its tender, ripe or processed form. It is an important cash crop of India. The economic produce is the fruit called ‘betel nut’ and used mainly for masticatory purposes. Its cultivation is restricted in South Western and North Eastern regions of the country. The chromosome number of Areca catechu L. was first determined as 2n=32 (Venkatasubban, 1945) and it belongs to family Arecaceae. It is one of the important commercial crops grown in parts of Karnataka, Kerala, Assam, Meghalaya, West Bengal, and Andaman and Nicobar Islands. The cultivation of arecanut has also been extended to other states like Tamil Nadu, Andhra Pradesh and Maharashtra. India is the largest producer and consumer of arecanut in the world holding 62% of the area and 60% of the production. The other major arecanut growing countries are Indonesia, Bangladesh, China, Myanmar and Thailand. Arecanut being a profitable plantation crop, it is important to understand the package of practices and seasonal operations to be followed in the nursery, in young gardens and in old plantations to get maximum returns. To get additional income in the adverse periods, concept of cropping system is very important. The exact origin of areca nut is not known till date but, arecanut is a palm which grows in much of the tropical Pacific, Asia, and parts of East Africa (Kumar, 2013).

Importance

It helps to cope with fever, cough and cold, stress, high blood pressure, excessive fats in body. It lowers the cholesterol level, cleanse the body by eliminating toxic substances, improve the digestive system, improve blood circulation, cleanses other organs of our body including kidney, pancreas, liver, bladder etc.and aid to deal with menstrual problems. The oil is distilled from leaves and flowering tops of Lemon grass. The oil has strong lemon-like odour, due to high percentage (over 75%) of citral in the oil. The characteristic smell of oil makes its use in scenting of soaps, detergents, insect repellent preparations. However, the major use of oil is as a source of citral, which goes in perfumery, cosmetics, beverages and is a starting material for manufacture of ion ones, which produces vitamin – A. The Citral rich oil has germicidal, medicinal and flavouring properties. An allied species called West Indian lemon grass (C.citratus) has low citral content in the oil and has meager trade in the country.

17.1 INTRODUCTION

Basella is a short-lived but productive leafy vegetable of the tropics. Its resistance to pests and diseases makes it very promising for small-scale production in home and market gardens. The plant is a climbing vine with thick fleshy stem and leaves. They are chopped and cooked as vegetables and has ornamental value too. Its leaves are rich source of vitamin A (3250 IU/100g), protein (1.2%) and rich source of iron (1.4mg/100g). The succulent leaves with petioles and tender leaves are cooked as vegetables. The plant is a climbing vine with thick fleshy stem and leaves. It was cultivated since long in South-East Asia and China, and is now widespread throughout tropical Asia, Africa and America. It is a popular vegetable in Malaysia and the Philippines. The colouring matter present in the red cultivar is reported to have been used in China as a red dye for official seals, as ink. These are used to allay fever and as a mild laxative for pregnant women. A decoction from the plant is used to alleviate labour pains. Boiled leaves are used as a poultice. Flower spikes are sold as vegetable in northern Thailand markets. Flowers have been reported as an antidote to poisons. Fruit juice is used as eye-drops in the treatment of conjunctivitis. Cooked roots are used to cure diarrhoea, while cooked leaves and stems are used as a laxative. The red types of Ceylon spinach are very popular ornamentals and are grown as a pot plant in Europe.

17.1 Introduction

Basella is a short-lived but productive leafy vegetable of the tropics. Its resistance to pests and diseases makes it very promising for small-scale production in home and market gardens. The plant is a climbing vine with thick fleshy stem and leaves. They are chopped and cooked as vegetables and has ornamental value too. Its leaves are rich source of vitamin A (3250 IU/100g), protein (1.2%) and rich source of iron (1.4mg/100g). The succulent leaves with petioles and tender leaves are cooked as vegetables. The plant is a climbing vine with thick fleshy stem and leaves. It was cultivated since long in South-East Asia and China, and is now widespread throughout tropical Asia, Africa and America. It is a popular vegetable in Malaysia and the Philippines. The colouring matter present in the red cultivar is reported to have been used in China as a red dye for official seals, as ink. These are used to allay fever and as a mild laxative for pregnant women. A decoction from the plant is used to alleviate labour pains. Boiled leaves are used as a poultice. Flower spikes are sold as vegetable in northern Thailand markets. Flowers have been reported as an antidote to poisons. Fruit juice is used as eye-drops in the treatment of conjunctivitis. Cooked roots are used to cure diarrhoea, while cooked leaves and stems are used as a laxative. The red types of Ceylon spinach are very popular ornamentals and are grown as a pot plant in Europe.

4.1 INTRODUCTION

It is an annual crop cultivated all over India, Bangladesh, Pakistan, China, Japan, South East Asia and Philippines. The fruits are available practically throughout the year. Brinjal fruits are a good source of calcium, phosphorus, iron and vitamins particularly ‘B’ group. A 100 g of edible fruit contains 91.5g of water, 6.4 g of carbohydrates, 1.3g of protein, 0.3g of fat and 0.5g of mineral matters. Its green leaves are the main source of vitamin C (38-104.7mg/100g). Dark purple brinjal has more vitamin C than those with white skin. Bitterness in brinjal is due to presence of glycoalkaloid solasodine. Generally, high amount of glycoalkaloids (20mg/100g) in the fruits produce a bitter taste and off flavour. Brinjal is reported to stimulate the intrapeptic metabolism of blood cholesterol and has marked drop in blood cholesterol level. The de-cholestrolising action is attributed due to the presence of poly-unsaturated fatty acids, PUFA (linoleic and linolenic) which are present in flesh and seeds of fruit in higher amount (65.1%). The presence of Mg and K salts also helps in de-cholestrolising action. Dry fruit is reported to contain goitrogenic principles. Aqueous extracts of fruit inhibit choline esterase activity of human plasma. Brinjal has got much potential as raw material in pickle making and dehydration industries. It is supposed to contain certain medicinal properties and white brinjal is said to be good for diabetic patients. The fruits are regarded as a cure for toothache. It is also an excellent remedy for those who are suffering from liver complaints. Cu content and polyphenol oxidase activity are highest in purple colour fruits and lowest in white fruit. Fe and catalase activity are highest in green fruited cultivars and lowest in white fruited cultivars. White fruited cultivars contain twice as much crude fibre as the purple and green fruited cultivars. Solanum ferox is yellow fruited type and is very popular in southern Europe, France and Italy and USA. Vitamin C content of brinjal is affected by canning. Toasting of fruits raises the nicotinic acid at the expense of trigonellin which is present in it and 66-69% of it is converted into nicotinic acid during toasting.

Brinjal is a self-pollinated crop but cross-pollination also occurs in it i.e., it is often cross-pollinated and pollination is mainly done by bumble bees and honey bees. To encourage pollination and visit of these bees, Mimosa pudica plants should be planted in the vicinity of brinjal. Brinjal flowers are divided into four types namely (i) long styled (ii)Medium styled (iii) pseudo-short styled and (iv) short styled. The maximum fruit setting in different cultivars is in long styled flowers which ranges from 70-86.7% and in medium styled it ranges from 12.5 to 55.6%. There is no fruit setting in pseudo-short and short-styled flowers. In India it is produced in an area of 0.669 million ha with a production of 12.4 million tonnes.

4.1 Introduction

It is an annual crop cultivated all over India, Bangladesh, Pakistan, China, Japan, South East Asia and Philippines. The fruits are available practically throughout the year. Brinjal fruits are a good source of calcium, phosphorus, iron and vitamins particularly ‘B’ group. A 100 g of edible fruit contains 91.5g of water, 6.4 g of carbohydrates, 1.3g of protein, 0.3g of fat and 0.5g of mineral matters. Its green leaves are the main source of vitamin C (38-104.7mg/100g). Dark purple brinjal has more vitamin C than those with white skin. Bitterness in brinjal is due to presence of glycoalkaloid solasodine. Generally, high amount of glycoalkaloids (20mg/100g) in the fruits produce a bitter taste and off flavour. Brinjal is reported to stimulate the intrapeptic metabolism of blood cholesterol and has marked drop in blood cholesterol level. The de-cholestrolising action is attributed due to the presence of poly-unsaturated fatty acids, PUFA (linoleic and linolenic) which are present in flesh and seeds of fruit in higher amount (65.1%). The presence of Mg and K salts also helps in de-cholestrolising action. Dry fruit is reported to contain goitrogenic principles. Aqueous extracts of fruit inhibit choline esterase activity of human plasma. Brinjal has got much potential as raw material in pickle making and dehydration industries. It is supposed to contain certain medicinal properties and white brinjal is said to be good for diabetic patients. The fruits are regarded as a cure for toothache. It is also an excellent remedy for those who are suffering from liver complaints. Cu content and polyphenol oxidase activity are highest in purple colour fruits and lowest in white fruit. Fe and catalase activity are highest in green fruited cultivars and lowest in white fruited cultivars. White fruited cultivars contain twice as much crude fibre as the purple and green fruited cultivars. Solanum ferox is yellow fruited type and is very popular in southern Europe, France and Italy and USA. Vitamin C content of brinjal is affected by canning. Toasting of fruits raises the nicotinic acid at the expense of trigonellin which is present in it and 66-69% of it is converted into nicotinic acid during toasting.

1 What is the best time to sow onion seeds in Northern Hilly regions?

 a) January to February b)  March to April

 c) May to June  d) September to November

 2 Which type of soil is best for onion cultivation?

 a) Sandy loam    b)  Clay loam

 c) Alluvial soil  d) Both a and b

 3 What should be the pH range for onion cultivation?

 a) 4.4-5.0    b)  5.5-6.5

 c) 6.0-7.5    d)  6.5-7.5

6.1 INTRODUCTION

Capsicum is mostly consumed raw in green mature forms unlike in Europe and US where they are consumed in red ripe form in salads, cooked, mixed and stuffed vegetables. It is known as bell pepper because of its fruit shape. The fruits of capsicum are non-pungent, so popularly known as sweet pepper; but some cultivars are slightly pungent. Capsicums are grown throughout the Old world and New world as a commercial crop mainly in mid-hill regions or protected structures. Its cultivation is restricted to cooler regions of the world. In Spain, it is referred to as ‘pimientos’ due its red colour and sweet taste. Fruits are rich in vitamins C and D (beneficial to the vascular system), as well as vitamins A, B₁, and B₂. It has four different colours such as green, red, yellow and purple. The oleoresin extracted from bell pepper is of better quality than that extracted from Chilli.

6.1 Introduction

Capsicum is mostly consumed raw in green mature forms unlike in Europe and US where they are consumed in red ripe form in salads, cooked, mixed and stuffed vegetables. It is known as bell pepper because of its fruit shape. The fruits of capsicum are non-pungent, so popularly known as sweet pepper; but some cultivars are slightly pungent. Capsicums are grown throughout the Old world and New world as a commercial crop mainly in mid-hill regions or protected structures. Its cultivation is restricted to cooler regions of the world. In Spain, it is referred to as ‘pimientos’ due its red colour and sweet taste. Fruits are rich in vitamins C and D (beneficial to the vascular system), as well as vitamins A, B1 , and B2 . It has four different colours such as green, red, yellow and purple. The oleoresin extracted from bell pepper is of better quality than that extracted from Chilli.

Botanical Name: Anacardium occidentale L.

Family: Anacardiaceae

Chromosome No: 42

Place of Origin: Brazil

Common Name: Cashew, cashew tree, caju

7.1 Introduction

Cashewnut (Anacardium occidentale L.) is an important tropical tree crop which leads the edible nuts in international trade with 29% market share only after hazelnuts (35%) and followed by walnuts (21%) and almonds (16%). It is one of the major exports earning crops which accounts nearly Rs. 2515 crores contributing about 1.5% of the total Indian exports. It was only during the past two decades it gained the status of horticulture crop. India is the world’s largest producer of cashewnut. The cashew cultivation area in India during 2018-19 was 10.89 lakh hectares with an annual production of 743 thousand metric tons of fruits. Maharashtra is a much-advanced state for horticulture which occupies large area (1.9 lakh hectares) under this crop (Directorate of Cashew & Cocoa Development, Cochin, Kerala). Cashew exports amounted to over 566 million U.S. dollars from India in fiscal year 2020. This included cashew kernels and cashew nut shell liquid. India’s main export markets for this commodity included South Korea, China, Spain, United States and Belgium (Department of Agriculture, Cooperation & Farmers Welfare).

5.1 INTRODUCTION

Chilli is a tropical vegetable crop but considered as an important spice crop of India. Chilli is mainly used in culinary purpose for adding flavour, colour and pungency. It is consumed both in mature and immature stage. In immature form it is valued for pungency and in ripe dried form it is valued both for pungency and colour. Dry chilli powdered or ground into a paste and even green chillies are used for curries, sambars, rasam and other savory dishes to impart pungency, colour and flavour to food items. It is widely used in the manufacture of curry powder, curry paste and all kinds of pickles and preparing sauce, soups, salads etc. In food and beverage industries chilli is being used in the form of oleoresin which permits better distribution of colour, flavour in food. Capsaicin, the pungent principle, is present in cores or septa walls and placenta. It is used in the preparation of balms, whereas the colour extracts (Capsanthin/carotenoid pigments) find use as colour additives in food industry, poultry and prawn feed industry. Green chillies are rich in Rutin which has pharmaceutical use and known as Vitamin P. Oleoresin present in chilli permits better distribution of colour and flavour in food as compared to chilli powder due to cleanliness and uniform flavour. Oleoresin is used in preparation of processed products and also in a number of pharmaceutical formulations. A non-conventional use of chilli is for self-defence sprays of capsicum oleoresin at ultra-high emission rate which temporarily immobilizes the attacker. Highest pungent chilli of the world is Bhoot Jolokia/Naga King chilli (Capsicum chinensis) in NE India. Hotness of Naga king Chilli is 10,01,304 SHU (Scovonelle Heat Unit). At present chillies are grown in almost all states of the country. The major chilli growing states are Andhra Pradesh, Karnataka, Maharashtra, Odisha, Tamil Nadu, Madhya Pradesh, West Bengal and Rajasthan. Within a span of over four centuries, it has spread to an area of around 0.8 million ha. The area and production keeps varying depending on price fluctuations and the weather conditions. Area under chilli cultivation in India is 0.831 million ha with a production 1.87 million tonnes of dry chilli. Andhra Pradesh has been leading both in area and production contributing on average of 25 per cent of the total area and over 40 to 50 per cent of the total production. Chillies have adapted very well to the Indian condition so that, India is considered as secondary centre of origin.

5.1 Introduction

Chilli is a tropical vegetable crop but considered as an important spice crop of India. Chilli is mainly used in culinary purpose for adding flavour, colour and pungency. It is consumed both in mature and immature stage. In immature form it is valued for pungency and in ripe dried form it is valued both for pungency and colour. Dry chilli powdered or ground into a paste and even green chillies are used for curries, sambars, rasam and other savory dishes to impart pungency, colour and flavour to food items. It is widely used in the manufacture of curry powder, curry paste and all kinds of pickles and preparing sauce, soups, salads etc. In food and beverage industries chilli is being used in the form of oleoresin which permits better distribution of colour, flavour in food. Capsaicin, the pungent principle, is present in cores or septa walls and placenta. It is used in the preparation of balms, whereas the colour extracts (Capsanthin/carotenoid pigments) find use as colour additives in food industry, poultry and prawn feed industry. Green chillies are rich in Rutin which has pharmaceutical use and known as Vitamin P. Oleoresin present in chilli permits better distribution of colour and flavour in food as compared to chilli powder due to cleanliness and uniform flavour. Oleoresin is used in preparation of processed products and also in a number of pharmaceutical formulations. A non-conventional use of chilli is for self-defence sprays of capsicum oleoresin at ultra-high emission rate which temporarily immobilizes the attacker. Highest pungent chilli of the world is Bhoot Jolokia/Naga King chilli (Capsicum chinensis) in NE India. Hotness of Naga king Chilli is 10,01,304 SHU (Scovonelle Heat Unit). At present chillies are grown in almost all states of the country. The major chilli growing states are Andhra Pradesh, Karnataka, Maharashtra, Odisha, Tamil Nadu, Madhya Pradesh, West Bengal and Rajasthan. Within a span of over four centuries, it has spread to an area of around 0.8 million ha. The area and production keeps varying depending on price fluctuations and the weather conditions. Area under chilli cultivation in India is 0.831 million ha with a production 1.87 million tonnes of dry chilli. Andhra Pradesh has been leading both in area and production contributing on average of 25 per cent of the total area and over 40 to 50 per cent of the total production. Chillies have adapted very well to the Indian condition so that, India is considered as secondary centre of origin.

9.1 INTRODUCTION

Cluster bean is grown in India to a lesser extent than other beans. It is a commercial crop of arid and semi-arid regions. It is grown for its green pods that are used as vegetable and dry seeds. It is also grown as forage and green manure crop. Among leguminous crops it is comparatively hardier, drought resistant and cultivated on a large scale as a forage crop in dry regions because of its deep tap root system which enables it to recover from water stress. Some of the cultivars are used for extraction of gum called as guargum. The gum obtained from this crop is like a mucilaginous substance called galactomannan that is used in various industries particularly textiles, cosmetics, explosives and paper. Due to its colloidal nature, the gum acts as a stabilizer and thickener in food products,viz., ice cream, bakery mixes and salad dressings. The seeds of clusterbean contain about 30-33% gum in the endosperm. The gum in the seeds are galactomannan polysaccharides. The discovery of the galactomannan gum in the endosperm during 1948, led to its importance as an industrial crop. Today it is one of the significant foreign exchange earners of the country. Fresh pods contain 82.5% water, 9.9% carbohydrate, 3.7% protein, 0.2% fat, 2.3% fibre and 1.4% mineral matter. Cyamopsis senegalensis is the ancestor of guar. The largest growing state is Rajasthan (82%). Young plants of cluster bean contain hydrocyanic acid which causes toxicity to animals. It is an amide (asparagine and glutamine) producing legumes.

Botanical Name: Theobroma cacao L.

Family: Sterculiaceae

Chromosome No: 20

Place of Origin: Tropical South America

Common Name: Cacao, cacao bean, cocoa, cocoa bean

6.1 Introduction

Cocoa (Theobroma cacao L.) is a perennial plant and is used as beverage crop. The generic name Theobroma means the “Food of the God”. The word cacao refers to the tree, while the word cocoa refers to the drink made from its seeds. The roasted product of the dried beans is called as Cacao nibs that are used for the manufacture of various products. When cacao nibs are ground, the resulting product is called chocolate liquor or mass, which contains around 55% fat. The fat that is pressed from chocolate liquor is termed as cacao butter. It is mainly used for the manufacture of chocolates, in pharmaceutical preparations and soap making. After pressing out the fat the resultant product with reduced fat content is called cacao powder. For preparation of chocolates cacao powder is mixed with cacao butter and sugar with a definite ratio. Milk chocolates are prepared by adding milk to the above mixture. The cocoa powder contains 22- 25% fat, 20.4% protein and 35% carbohydrate with caloric value of 452 cal. Rind or shell of pod is used as a cattle feed.

Botanical Name: Cocos nucifera L. Family: Arecaceae / Palmae Chromosome No: 32 Place of Origin: Malaysia Common Name: Coconut 2.1 Introduction Coconut (Cocos nucifera L.), is widely known as ‘Kalpavriksha’ (i.e., tree of heaven) as each and every part of the palm is useful in one way or the other and is an important perennial oil yielding crop of humid tropics. It provides food security and livelihood opportunities to 20 million people around the globe and 10 million people in India (Chowdappa et al., 2017). Even though India is the largest coconut growing country in the world, its contribution to the export market is not significant. Coconut as an edible oil and food crop, is now slowly transforming into raw material for various pharmaceutical, nutraceutical and cosmetic products. Coconut is rich in fibre, vitamins and minerals. Because of its health benefits beyond its nutritional content, it has been considered as “functional food”. Hence, there exists a huge scope for coconut-based agribusiness in India, which will increase the present 8% level of value addition to 25%. The coconut-based value-added products are desiccated coconut powder, coconut milk, coconut cream, coconut milk powder, coconut flour, coconut water concentrate, coconut jelly (Nata-de-coco), coconut vinegar, virgin coconut oil, coconut chips, coconut pickle, coconut ice cream, neera and neera based value added products such as syrup, squash, honey, jaggery, candy and sugar (Chowdappa et al., 2017).

Botanical Name: Coffea arabica, Coffea canephora

Family: Rubiaceae

Chromosome No: 44, 22

Place of Origin: Africa

Common Name: Coffee

8.1 Introduction

Coffee is widespread throughout the tropics with more than 70 species. All cultivated species originate from Africa. Economically important today is Coffea arabica (Arabica, 64 % of world production) and Coffea canephora, (Robusta, 35 %). It is cultivated worldwide on approximately 10.3 million hectares and represents the sole economic income for more than 25 million families. The crop is produced and exported by more than 60 nations and ranks as one of the top cash crops in developing countries with 3.19 lakh MT production per annum in India in 2018-19 from more than 459 thousand hectares crop area. The coffee plant is a fast-growing tropical bush tree, with two types of shoots: upright growing orthotropic main shoots (stem), and horizontally growing plagiotropic shoots (branches). Traditionally, coffee trees are cultivated only for the berries, which are processed using dry or wet techniques directly in the growing areas to the final raw product, green coffee; this serves as the basis for various coffee products. Both the coffee species tolerate shade and share quite similar growth requirements with various forest crops and trees, thus predisposing them to be grown in agro-forestry ecosystems.

1 Brassica oleracea L. var. botrytis is the botanical name of

 a) Cabbage c) Cauliflower

 b) Knol-Khol d) None of these

 2 Cauliflower was introduced in India in 1822 by ________ from Garden, London.

 a) Dr. Jemson b) Dr. Kalloo

 c) Herbalist Dodens d) None of these

10.1 INTRODUCTION

Cowpea is a typical warm season crop adapted to tropics. It is grown both for its tender pod and dry seed that is used as pulse for culinary purposes. The pods are rich in protein, vitamin B and minerals. It is also used as a fodder and green manure crop. On dry weight basis the cowpea seeds contain 23.4 % protein, 1.8 % fat and 60.3 % carbohydrates. Most probable progenitor of cowpea is Vigna unguiculata var mensensis. It is grown as a catch crop that is drought tolerant and sensitive to water logging. Being a legume crop, cow pea fits well in different inter-cropping systems. It is mainly of two types. Asparagus bean/yard long bean/snake bean (Vigna sesquipedalis) has 30-90 cm long fleshy pod with elongated kidney shaped 8-12 mm long seeds. It is late maturing variety. While catjang bean (Vigna catjang) has 7-13 cm long pods with 5-6 mm kidney shaped seeds. Pulse type of cowpea is Vigna uniguiculata var radiate and dual-purpose cowpea is Vigna uniguiculata var cylindrica.

10.1 Introduction

Cowpea is a typical warm season crop adapted to tropics. It is grown both for its tender pod and dry seed that is used as pulse for culinary purposes. The pods are rich in protein, vitamin B and minerals. It is also used as a fodder and green manure crop. On dry weight basis the cowpea seeds contain 23.4 % protein, 1.8 % fat and 60.3 % carbohydrates. Most probable progenitor of cowpea is Vigna unguiculata var mensensis. It is grown as a catch crop that is drought tolerant and sensitive to water logging. Being a legume crop, cow pea fits well in different inter-cropping systems. It is mainly of two types. Asparagus bean/yard long bean/snake bean (Vigna sesquipedalis) has 30-90 cm long fleshy pod with elongated kidney shaped 8-12 mm long seeds. It is late maturing variety. While catjang bean (Vigna catjang) has 7-13 cm long pods with 5-6 mm kidney shaped seeds. Pulse type of cowpea is Vigna uniguiculata var radiate and dual-purpose cowpea is Vigna uniguiculata var cylindrica.

13.0 INTRODUCTION

Cucurbits belong to the family Cucurbitaceae, commonly known as the melon or gourd family. The term cucurbits was coined by Dr Bailey. From nutritional point of view, cucurbit seeds are valued for their high oil and protein contents. Seed proteins and methionine of cucurbits are higher than legumes. Vegetatively propagated cucurbits are pointed gourd, ivy gourd and chow-chow. Long day of 16 hours and high temperature result in maleness. Short day of 9 hours results in femaleness. They are widely distributed in the tropics and warm temperate regions of south, southeast and East Asia, Africa including Madagascar, and central and south America. Cucurbitaceae family is represented by about 117 genera and 825 species. The most common uses of cucurbits are as vegetables and fruits. They are valuable sources of vitamins and minerals. The important cucurbits that are cultivated commercially are cucumber, watermelon, musk melon, long melon, round melon, bottle gourd, bitter gourd, ash gourd, ridge gourd, sponge gourd, pumpkin, squash, snake gourd, pointed gourd, spine gourd, ivy gourd and chow-chow etc. Cucurbits are used as vegetable, salads, dessert and pickle, and for making of sweets.

Vegetable: Bitter gourd, ridge gourd and sponge gourd, round gourd, pointed gourd and pumpkin are used as vegetables. Immature fruits of musk melon are also cooked as vegetable only in some areas.

Salad: Excellent salad is made from cucumber and little gourd.

Dessert: Muskmelon, water melon and cucumber are used as desserts.

Pickle: Cucumber, little gourd and bitter gourd are used for making pickles.

Sweets: Pointed gourd and ash gourd are used for making sweets.

1 Which soil is most suitable for bottle gourd cultivation?

 a) Sandy loam soils. b) Clayey soil

 c) Clayey loam soil d) Silt loam soil

 2 The ideal pHof soil for growing bottle gourdis?

 a) 4-5 b) 8-9

 c) 3-4 d) 6-7

 3 What is the desirable soil temperature for good bottle gourd growth?

 a) 35-40°C b) 10-15°C

 c) 18°-22°C d) 40-45°C

15.1 Introduction

Curry leaf is an important perennial tree vegetable cum spice crop of India mostly used in South Indian culinary preparations for flavouring food stuff. It is an under exploited crop. The leaves have slightly pungent, bitter and feebly acidic taste and they retain their flavour and other qualities even after drying. Curry leaf is used in many of the Indian Ayurvedic and Unani prescriptions. It has many industrial values and medicinal uses. Its leaves, roots and bark are credited with tonic, stomachic and carminative properties. Leaves are reported to cure piles and allay heat of body. The green leaves are said to be eaten raw for treatment of dysentery. External application of pulped bark and root is reported to relive eruptions and bites of poisonous animals. An injection of toasted leaves is used to stop vomiting. The tribal people of India use its ground bark to rub on the bitten Part As a snake bite remedy. The powdered leaves are also used to aid in healing of fresh cuts. The dried curry leaf powder is also a good spice powder for use in the food stuff preparation and is exported. Fresh leaves on a steam distillation under high pressure yield 2.6 % (curry leaf oil) volatile oil which is used as fixative for heavy type of soap and perfume. Rectified leaf oil is deep yellow in colour with a strong spicy odour and pungent clove like taste. A volatile oil, a crystalline glucoside ‘Koenigin’ from the leaves and ‘Murayam’ from the flowers are industrial products. Curry leaf is grown on large scale in West Bengal, Assam, Deccan plateau, Western Ghats, Tamil Nadu, Karnataka and Kerala. It is cultivated in Coimbatore, Salem and Tiruchirappalli districts of Tamil Nadu on a commercial scale.

15.1 INTRODUCTION

Curry leaf is an important perennial tree vegetable cum spice crop of India mostly used in South Indian culinary preparations for flavouring food stuff. It is an underexploited crop. The leaves have slightly pungent, bitter and feebly acidic taste and they retain their flavour and other qualities even after drying. Curry leaf is used in many of the Indian Ayurvedic and Unani prescriptions. It has many industrial values and medicinal uses. Its leaves, roots and bark are credited with tonic, stomachic and carminative properties. Leaves are reported to cure piles and allay heat of body. The green leaves are said to be eaten raw for treatment of dysentery. External application of pulped bark and root is reported to relive eruptions and bites of poisonous animals. An injection of toasted leaves is used to stop vomiting. The tribal people of India use its ground bark to rub on the bitten Part As a snake bite remedy. The powdered leaves are also used to aid in healing of fresh cuts. The dried curry leaf powder is also a good spice powder for use in the food stuff preparation and is exported. Fresh leaves on a steam distillation under high pressure yield 2.6 % (curry leaf oil) volatile oil which is used as fixative for heavy type of soap and perfume. Rectified leaf oil is deep yellow in colour with a strong spicy odour and pungent clove like taste. A volatile oil, a crystalline glucoside ‘Koenigin’ from the leaves and ‘Murayam’ from the flowers are industrial products. Curry leaf is grown on large scale in West Bengal, Assam, Deccan plateau, Western Ghats, Tamil Nadu, Karnataka and Kerala. It is cultivated in Coimbatore, Salem and Tiruchirappalli districts of Tamil Nadu on a commercial scale.

Botanical Name: Phoenix dactylifera L.

Family: Arecaceae

Chromosome No: 2n = 36

Place of Origin: Countries around Persian Gulf

10.1 Introduction

Date palm is a nutritive fruit rich in sugar and iron and predominantly seen in desert oasis. It is the main fruit crop in arid and semiarid regions, particularly in the arid regions of western Asia and North Africa. The palm tree is well adapted to desert environments that are characterized by extreme temperatures and water shortage. Beyond the arid climates, date palm can also be grown in many other countries for food or as an ornamental plant including the continents of Americas, Southern Europe, Asia, Africa and Australia. The majority of date palm growing areas are located in developing or underdeveloped countries where dates are considered the primary food crop, thus playing a major role in the nutritional status of these communities. By-products from date palm are used in building structures, animal feed, and also in several items such as baskets and ropes. The date palm tree has been in cultivation since 2400 BC. It is one of the oldest cultivated fruit trees on earth. India is the leading importer of dates. According to FAO statistics, in 2011 India was the largest world importer of dates (256,295 mt) and its neighbour Pakistan, in 2012, was the world’s sixth largest producer (600,000 mt). The major date palm growing areas in India are Kutch (Gujarat), Rajasthan and certain parts of the Punjab, as well as Tamil Nadu state to some extent. In Kutch, there are more than 2 million date palms, the majority of them grown from seeds and offshoots, providing a huge biodiversity for experimentation and improvement of products. Efforts by the Indian government in the last decade have resulted in an increase of date palm cultivation from 8,973 to 16,000 ha and establishment of a prominent effort in Rajasthan (Shah, 2014).

12.1 INTRODUCTION

French bean (Phaseolus vulgaris L.) is one of the most important legume vegetables grown for its tender green pods for fresh consumption, processing and dry seeds. The pods are slender, 10-25 cm long, straight or slightly curved with prominent beak. Seeds are kidney shaped, elongated and white, red, purple or blackish in colour or mottled. The vegetable is in great demand in cities and is grown both commercially and in home gardens. Its major area is confined to hills, where it is grown for green pods. Punjab, Jammu and Kashmir, Gujarat, Karnataka, Tamil Nadu, Uttar Pradesh and Himachal Pradesh are the main states where it is being cultivated on large scale. Dry bean seeds are an excellent source of cheap protein and many cultivars contain 22-23 % protein. Hundred grams of edible fresh pods contain 91.4 % water, 1.7 % protein, 0.1 % fat, 0.5 % mineral matters, 4.5 % carbohydrates, 50 mg Ca, 28 mg P and 1.7 mg Fe. Its 100 g dry seeds contain 9.6 % water, 24.9 % protein, 0.8 % fat, 3.2 % mineral matters, 60.1 % carbohydrates, 60 mg Ca, 433 mg P and 2.4 mg Fe. In India, it is mostly grown for fresh consumption, while in USA it is grown for processing in large quantities. Dried beans are rich in protein and closely compared with meat. Phaseolus oborigineus is the progenitor of French bean. They are capable of utilizing atmospheric nitrogen with the aid of bacteria found in the nodules on the roots of the plants. Four cultivated species are seen under the genus Phaseolus, i.e., Phaseolus vulgaris—common red kidney bean, Phaseolus coccineus—scarlet runner bean, Phaseolus lanatus— Lima bean, Phaseolus acutifolius var. latifolius—Moth bean or Tapery bean. All the species are self-pollinated except lima bean which is often cross-pollinated and Phaseolus coccineus is generally cross-pollinated and long day plant.

12.1 Introduction

French bean (Phaseolus vulgaris L.) is one of the most important legume vegetables grown for its tender green pods for fresh consumption, processing and dry seeds. The pods are slender, 10-25 cm long, straight or slightly curved with prominent beak. Seeds are kidney shaped, elongated and white, red, purple or blackish in colour or mottled. The vegetable is in great demand in cities and is grown both commercially and in home gardens. Its major area is confined to hills, where it is grown for green pods. Punjab, Jammu and Kashmir, Gujarat, Karnataka, Tamil Nadu, Uttar Pradesh and Himachal Pradesh are the main states where it is being cultivated on large scale. Dry bean seeds are an excellent source of cheap protein and many cultivars contain 22-23 % protein. Hundred grams of edible fresh pods contain 91.4 % water, 1.7 % protein, 0.1 % fat, 0.5 % mineral matters, 4.5 % carbohydrates, 50 mg Ca, 28 mg P and 1.7 mg Fe. Its 100 g dry seeds contain 9.6 % water, 24.9 % protein, 0.8 % fat, 3.2 % mineral matters, 60.1 % carbohydrates, 60 mg Ca, 433 mg P and 2.4 mg Fe. In India, it is mostly grown for fresh consumption, while in USA it is grown for processing in large quantities. Dried beans are rich in protein and closely compared with meat. Phaseolus oborigineus is the progenitor of French bean. They are capable of utilizing atmospheric nitrogen with the aid of bacteria found in the nodules on the roots of the plants. Four cultivated species are seen under the genus Phaseolus, i.e., Phaseolus vulgaris—common red kidney bean, Phaseolus coccineus—scarlet runner bean, Phaseolus lanatus— Lima bean, Phaseolus acutifolius var. latifolius— Moth bean or Tapery bean. All the species are self-pollinated except lima bean which is often cross-pollinated and Phaseolus coccineus is generally cross-pollinated and long day plant.

1. Introduction

There is intense commercial interest in dehydrated fruit and vegetable products especially mango powder, banana powder, orange powder, papaya cereal flakes to powder, tomato juice powder and other vegetable powders, which are in great demand for soups, biscuit type cookies supplemented with fruit powders (Ana Maria et al. 2009; Sunita and Chauhan 2008), pizza mixes and sauces. Natural fruit and vegetable powders are gaining lot of popularity in recent years as they are very easy to handle after production, require minimum storage space and they are attractive. Tamarind powder is developed from tamarind fruit (Tamarindus indica) (Manjunath et al. 1991) and recently cashew apple and guava residues from fruit juice industry were successfully converted into fruit powders and used at different levels of wheat flour substitution for cookies formulation (Ana Maria et al.2009) and fruit puree like papaya can be mixed with cereal flour to prepare slurry and after gelatinization, the slurry can be useful for preparing drum dried flakes and powder (Sunita and Chauhan 2008). Tropical fruits are exotic in flavor but their juices and purees are seldom available in dehydrated powder (James, 1971). Citrus juice concentrates were produced during world war II in powdered form by using spray, drum, vacuum-puff, and freeze drying (USDA, 1962). The preservation of fruits and vegetables by dehydration offers a unique method, which may be considered as an alternative low cost preservation technique. A shift from fresh to more and more processed foods with significant value addition is bound to occur sooner or later considering the socio-economic changes taking place in the country and the rapid integration of Indian economy with global system. Most popular brands are found in the “ready to consume” food sector.

The practice of smoking the trees to induce off-season crops in mango is

A. Smudging      B. Bending

C. Ringing         D. Notching

    14.1 Dry land ecosystem of Jammu and Kashmir
Geographically, Jammu and Kashmir state is divided into various zones- the mountainous plain known as Kandi belt, hills including Shiwaliks ranges, mountains of Kashmir valley and Pir Panjal range, and Tibetan tract of ladakh and kargil. The maximum areas of Jammu division is existing in rainfed condition and are known as kandi belt or sub-mountane region which includes the lower shiwalik region. The soils of kandi belt are light to dark colored, well drained, severely eroded and with varying degree of stoniness. These soils are neutral to slightly alkaline nature, low organic matter and poor in fertility. In these areas, mango, guava, aonla, phalsa, citrus, bael, ber and jamun are commonly grown as all these fruit crops are survived under rainfed condition or require less irrigations. In these areas the normal rainfall is nearly 900-1000 mm with a high co-efficient of dissimilarity. The rainfall division patterns are especially erratic in time and space which leads to moisture stress situation. About 70 to 80 per cent the annual rainfall occurs during from July to September as a result of the South-West monsoon. April to June and October to November are the driest months and is scarcity of water. Therefore the farmers are suffering by growing the agricultural crops and they have tremendous scope for growing fruit crops. These crops are less water requiring as compared to agricultural crops. Therefore RRSS, Raya, SKUAST-Jammu was initiated since 2016 for systematic research work for collection of germplasm, conservation, evaluation and utilization of red flush guava strains for growers community (Anonymous, 2022).

11.1 INTRODUCTION

The term ‘Dolichos’ derived from Greek language means long pod and ‘lablab’, an Arabic term, means production of sound by dried seeds in the pods. In India, it is grown all over the country but compact large acreage for commercial production is uncommon. It is grown for whole pod. Fresh seeds and dry seeds are used as pulse grain. It is used as pod vegetable, feed and green manure crop. It is very popular in villages as well as cities where less area is available for cultivation. The young tender leaves are used in salads and the relatively old leaves are cooked as potherb like spinach. Its fresh green pods contain 86% moisture, 3.8% protein, 6.7% carbohydrate, 0.7% fat, 0.9% mineral matter, Vitamin A 312 IU. It is good source of Vitamin B, Vitamin C, proteins, minerals and dietary fibres. Trypsin inhibitor and several anti-nutritional factors such as tannins and phytates are present in mature and dark coloured seeds. On heating it is broken down into toxic cyanogenic glucoside which is soluble in boiling water. Therefore, it is necessary to boil the mature seeds in water before consumption. Sem is of two types.(A) Dolichos purpureus var. typicus (Graden Type) is with soft, edible pod wall having less fibre. (B) Dolichos purpureus var. lignosus(Field bean) that is grown for fresh dry seed as pulse, pod wall has high fibre content and has characteristic aroma. Hyacinth bean is a perennial herbaceous plant often grown as an annual and pole types are photosensitive.

11.1 Introduction

The term ‘Dolichos’ derived from Greek language means long pod and ‘lablab’, an Arabic term, means production of sound by dried seeds in the pods. In India, it is grown all over the country but compact large acreage for commercial production is uncommon. It is grown for whole pod. Fresh seeds and dry seeds are used as pulse grain. It is used as pod vegetable, feed and green manure crop. It is very popular in villages as well as cities where less area is available for cultivation. The young tender leaves are used in salads and the relatively old leaves are cooked as potherb like spinach. Its fresh green pods contain 86% moisture, 3.8% protein, 6.7% carbohydrate, 0.7% fat, 0.9% mineral matter, Vitamin A 312 IU. It is good source of Vitamin B, Vitamin C, proteins, minerals and dietary fibres. Trypsin inhibitor and several anti-nutritional factors such as tannins and phytates are present in mature and dark coloured seeds. On heating it is broken down into toxic cyanogenic glucoside which is soluble in boiling water. Therefore, it is necessary to boil the mature seeds in water before consumption. Sem is of two types.(A) Dolichos purpureus var. typicus (Graden Type) is with soft, edible pod wall having less fibre. (B) Dolichos purpureus var. lignosus(Field bean) that is grown for fresh dry seed as pulse, pod wall has high fibre content and has characteristic aroma. Hyacinth bean is a perennial herbaceous plant often grown as an annual and pole types are photosensitive.

1. The soils best suited for leafy vegetables are:

a) Clayey soils

c) Sandy soils

b) Well drained loamy soils

 d) Any type of soil 

2. How long does itgenerally take for leafy vegetables to grow?

a) 35-50 days after sowing

 b) 100-120 days after sowing  

c) 90-95 days after sowing

 d) 50-60 days after sowing   

1 Chromosome number of garden pea is 

 a) 2n=2x=14 a) 2n=2x=18

 c) 2n=2x=20 b) 2n=2x=22

2 Origin of French Bean  

 a) South America b) South Mexica

 c) Africa d) Europe

3 Pea is the  

 a) Cross-pollinated b) Often-cross pollinated

 c) Self-pollinated d) None of the above  

India is a natural reservoir of the several fruit species. The several less known fruit species, which have the potential for commercial exploitation, are yet to be utilized to their potential. An attention to the less known fruit would play a significant role in increasing the income, providing employment opportunities, uplifting of the poor, small and marginal farmers and the development of value added products. These fruits are well known for their medicinal and nutritive value. There is a great need to develop and popularize not only for their domestic market but also for their export. Some of the less known fruits are described here with respect to their cultivation technology.

Where is the Central Institute for Medicinal & Aromatic Plants situated at?

A. Srinagar        B. Bengaluru

C. Anand           D. Lucknow

Importance

Ajwain is an important seed spice and is also useful for its medicinal values. It is a traditional potential herb for curing many ailments in human and animals. It is usually used as a digestive aid, relieves abdominal discomfort due to indigestion and antiseptic. The seeds of ajwain is bitter, pungent and contain 2-4.4% brown coloured oil known as ajwain oil. The main component of this oil is Thymol, which is used as gastrointestinal ailment, lack of appetite and bronchial problems. Thymol is also used in toothpaste and perfumery (Joshi, 2000). Seeds are also used for curing abdominal pains, abdominal tumors and piles (Krishnamoorty and Madalgeri, 1999). In southern parts of India dry ajwain seeds are powdered and soaked in milk, which is then filtered and fed to babies as it relieves colic in babies. It can be used as digestive mixture in large animals.

14.1 INTRODUCTION

Drumstick is one of the most popular perennial tree vegetables in the south Indian households and known as miracle tree. This perennial vegetable survives for several years and goes on yielding vegetables without much care and attention, and is planted on the side of the kitchen garden without much interference with tillage operations of other annual crops. The fruits, leaves and flowers are used in culinary preparation. Immature fruits are cut into pieces and used in several culinary dishes. Fruits are rich in Vitamin C, carotene, Phosphorus and minerals like Mg, K, S, Cl etc. Tender leaves and flowers are comparable to that of Colocasia in vitamins and minerals. Drumstick leaves contain high amount of vitamin A (four times more than carrot), vitamin C (seven times more than orange), protein (5-10%), calcium (four times more than milk) and potassium (three times more than banana).The roots of the plant are used for seasoning pickles. Its roots are a good substitute for Horse Radish so called as Horse radish tree. It is highly valued for the distinct and appealing flavour for its tender fruits. They are rich source of protein, minerals and vitamins. Seeds contain an oil called ben or behen oil which has been much used for illumination, soap industry and highly priced for lubricating watches, computers, delicate machinery and so known as Ben oil tree. Seeds contain 38-40% of non-drying oil which is clear and odourless, that never becoming rancid. The oil contains high levels of unsaturated fatty acids, especially oleic acid up to 67.8%. It is edible and useful in the manufacture of perfumes and hair dressing. The press cake remaining after oil extraction is high in saponin, not edible, but utilized as manure. The oil cake is a water coagulant and used for purifying effluent water. It is used as organic substitute for water purifying chemicals such as aluminium sulphate. Wood yields blue dye and coarse fibre. The plant is used for treatment of rheumatism and as cardiac and circulating system stimulants. It has fragile and cory stem. The trunk is gaining importance as a raw material for paper making. The gum of stem has medicinal properties. The leaves are usually tri-pinnate with elliptic leaflets. Seeds are trigonous with wings on angles. Flowers are produced on current seasons growth on large and erect panicles or monocladial cymes. Flowers are yellowish creamy white and sweet smelling. It is a cross-pollinated crop. Pollinator is carpenter bees, bumble bee, honey bee and flee beetle. Flowering mostly varies from place to place and is greatly influenced by rain, temperature, humidity, wind, soil moisture and soil temperature etc. Peak period of flowering in central parts of India and Kerala is December-January while in southern part it is February-March and July-August with maximum flowering in February-March. Fruits take 60 days for horticultural maturity during rainy season while 30 days in summer.

Botanical Name: Elaeis guineensis Jacq.

Family: Arecaceae / Palmae

Chromosome No: 32

Place of Origin: Guinea Coast of West Africa

Common Name: Oil Palm

4.1 Introduction

The cultivated oil palm Elaeis guineensis Jacq. is a native of West Africa and exists in wild, semi- wild and cultivated forms. It was introduced as an ornamental crop in 1860 and planted at National Botanical Garden, Kolkata. Research on oil palm in India started during 1960 with the establishment of a research station at Thodupuzha by the Department of Agriculture, Kerala with Dura and Tenera germplasm imported from Malaysia and Nigeria. National Research Centre (NRC) for oil palm is situated at Elur, Andhra Pradesh. Oil palm crop is one of the highest oil yielding crops among all perennial crops. It gives 4 to 6 tonnes of edible oil/ha from 3 to 25 years of its life span compared to less than one tonne of oil per ha from other cultivated oil yielding crops. This oil palm is considered as golden palm due to its high yielding capacity. Among the 10 major oilseeds, oil palm is accounted for 5.5% of global land use for cultivation, but produced 32.0% of global oils and fats output.

7.1 INTRODUCTION

Okra is a remunerative vegetable crop for the tropical and subtropical regions of the world. Its fresh fruits are important vegetable in India, Brazil, West Africa and many other countries. For year-round consumption sun dried (Africa, India), and frozen and sterilized (USA) fruits are processed from fresh fruits. Tender green fruits are cooked in curry and also used in soups. The root and stem are useful for clearing cane juice in preparation of jaggery. Its ripe seeds are roasted, ground and used as a substitute for coffee in Turkey. Matured fruits and stems containing crude fibre are used in the paper industry. Okra is rich in vitamins, calcium, potassium and other minerals. A 100g consumable unripe okra fruits contain 10.4g dry matter, 3,100 calorie energy, 1.8g protein, 90mg calcium, 1.0mg iron, 0.1mg carotene, 0.07mg thiamin, 0.08mg riboflavin, 0.08mg niacin and 18 mg vitamin C. The dry seeds contain 13-22% edible oil and 20-24% protein. The seed cake is also used as an animal feed. Okra has high iodine content and it has ability to control goiter. Ratoon cropping can also be done in okra.