eChapters

Organic Poultry Farming

Definition and Overview

• The FAO/WHO Codex Alimentarius Commission defines organic farming as a “holistic production management system that promotes and enhances agro-ecosystem health, including biodiversity, biological cycles, and soil biological activity, using non-farm agronomic, biological, and mechanical methods, excluding all synthetic off-farm inputs.”

• Organic chicken farming involves raising chickens in a natural, humane environment outside of a conventional chicken house, feeding them organic feed (free from synthetic fertilizers, pesticides, and GMOs), and avoiding the use of antibiotics or growth hormones.

• The main goal is to produce healthier, environmentally friendly chicken products while ensuring high animal welfare standards.

• Conversion Period: Transitioning a conventional poultry farm to an organic one requires a certain period called the “conversion period.”

• Organic poultry farming necessitates the use of indigenous chicken varieties managed organically, allowing the birds to express their natural behavior.

• Growing Popularity: The demand for organic poultry meat is increasing due to heightened health awareness among consumers. Chicken, in particular, has become a key organic meat due to its shorter production cycle.

Mixed and Integrated Poultry Farming

Mixed farming refers to the practice of cultivating crops and rearing livestock on the same farm, aimed at maximizing economic benefits through the efficient use of resources. This type of farming can be practiced either simultaneously or at different times, depending on the needs and conditions. In India, mixed farming is particularly significant as it typically contributes at least 10% of a farmer’s income from livestock, potentially reaching up to 49%.

Advantages of Mixed Farming

• Maximized Returns: By-products of farm activities, such as crop residues, can be effectively utilized to feed livestock, leading to higher returns.

• Year-Round Employment: Mixed farming provides continuous work opportunities throughout the year, ensuring a steady income.

• Efficient Resource Utilization: The combination of crops and livestock ensures optimal use of land, labor, and capital.

• Soil Fertility: Livestock manure contributes to maintaining and enhancing soil fertility, which is crucial for sustained crop production.

• Balanced Food Production: Mixed farming allows for the production of a variety of food items, leading to a more balanced diet throughout the year.

Integrated Poultry Farming

Integration refers to the coordination and amalgamation of various stages in poultry production to create a seamless flow of inputs and outputs, reducing overall production costs. This approach ensures that each stage of production, from breeding to marketing, is efficiently managed within a unified system.

• Global Integration: In developed countries, poultry production is highly integrated, encompassing all stages from principal breeding to consumer distribution. This includes broiler farms, hatcheries, feed mills, processing plants, and animal healthcare products, which work together to streamline production and marketing processes.

• Indian Context: In India, integration and contract farming in poultry began with Suguna Poultry Farm Limited in 1991. While this marked the start of integration in broiler production, it did not fully represent the comprehensive integration seen in more developed systems.

• Current Practice in India: Integrators provide essential inputs such as chicks, feed, medicines, vaccines, and technical support. They also handle marketing of the final product. Poultry farmers, operating as contract growers, receive payments based on the weight of broilers or number of eggs produced. Despite these developments, integration within the layer sector remains underdeveloped in India.

Management of Other Avian Species

Duck

Overview

• Asia: The homeland of ducks.

• Global Rankings: China holds the first position in duck population, followed by India.

• Significance in India: Ducks are the second most important poultry species, constituting about 10% of the total poultry population (851.82 million) and contributing 6-7% of the total egg production (138.38 billion) in the country (BAHS, 2024).

Marketing of Poultry and Poultry Products

Marketing involves the exchange of produce for an agreed sum of money and is a critical commercial process that encompasses promoting, selling, and distributing products. At its core, marketing is about understanding customer needs and providing products that meet these needs profitably. It is an essential business function that focuses on customer satisfaction and business growth.

Objectives of Marketing

1. Employment Generation: Marketing creates gainful employment opportunities for millions, thereby increasing income levels.

2. Demand Enhancement: It aims to boost the demand for poultry products, which in turn generates more employment opportunities in rural areas.

3. Improved Standards of Living: By providing essential nutrients like amino acids, fatty acids, vitamins, and minerals through poultry products, marketing contributes to the better health and standard of living of poultry farmers. 4. Efficient Supply: Ensures that poultry products are available at the right time, place, quantity, and price.

Water is a critical and essential nutrient in poultry production, necessary in greater amounts than any other nutrient. It plays a vital role in various physiological processes such as digestion, metabolism, nutrient transportation, enzymatic and chemical reactions, regulating body temperature, and lubricating joints and organs. Water deprivation can have severe consequences on poultry health, impacting growth, egg production, and even leading to increased mortality if prolonged. Therefore, providing cool, clean water that is free from contaminants is crucial for maintaining poultry health and optimizing farm profitability.

Water Consumption in Poultry

Water consumption in poultry varies under different conditions. Generally, under thermo-neutral conditions, birds will consume approximately twice the amount of water as the amount of feed. However, water intake is influenced by several factors, including environmental temperature, relative humidity, dietary salt and protein levels, the productivity of the birds (growth rate or egg production), and the bird’s ability to reabsorb water in the kidneys. In poultry houses, water consumption tends to be higher in areas with more birds and higher ambient temperatures. Studies indicate that birds prefer water at about 10°C; when water temperatures exceed 27°C, both water intake and daily weight gain are significantly reduced.

The use of conventional pesticides has raised significant concerns due to their adverse effects on human health and the environment. In response, there has been a growing interest in developing safer and more eco-friendly alternatives. This chapter explores the concept of green pesticides as a sustainable solution to pest and disease management. Green pesticides, derived from natural sources or synthesized using eco-friendly methods, offer effective control of pests while minimizing harm to non-target organisms and ecosystems. Green pesticides encompass a diverse range of products and approaches, including botanical extracts, microbial agents, natural predators, and pheromones. Moreover, there is a need to incorporate different cultural practices along with green pesticides to enhance pest control while reducing reliance on chemical inputs. However, the efficacy of green pesticides depend on several factors, including pest species, crop type, environmental conditions, and regulatory considerations. Therefore, ongoing research and innovation are essential to optimize the performance and scalability of these eco-friendly alternatives. Overall, this chapter underscores the potential of green pesticides as a safe and sustainable approach to pest and disease management in sustainable agriculture

Plant disease causes losses estimated for 20-40 per cent of global crop. Climate change has a very complex effect on plant-pathogen interactions, since environmental conditions affect the whole disease triangle: they modify plant susceptibility, the biological cycles of parasites and pathogens, and hostpathogen physiology and interactions. Innovative plant protection strategies in horticultural crops encompass a wide range of techniques and approaches aimed at safeguarding plants from pests, diseases, and environmental stresses in a sustainable and effective manner. These strategies are essential for ensuring the productivity, quality, and resilience of horticultural crops while minimizing negative impacts on the environment and human health.

Climate change, including increased temperature, CO levels, acid rain, and tropospheric O 3 2 , stresses plants and lowers their pathogen response. While higher CO 2 reduces stomata density, acid rain and O weaken cuticle protection, aiding pathogen entry.

Food security is paramount for developing any nation reliant upon sufficient crop production. The decline in crop production significantly impacts food security, leading to an imbalance between global food demand and agricultural output. Multiple factors contribute to reduced agricultural productivity, including abiotic factors like water scarcity, poor soils, and unsuitable temperatures, as well as biotic factors such as pests, diseases, and weeds attacking crops. These challenges result in inefficient input utilization and decreased crop yields, ultimately threatening food security. Pests, diseases, and weeds profoundly impact plant health, causing substantial losses in crop production. Geospatial technology is employed throughout the agricultural cycle, from initial crop health assessment to forecasting disease outbreaks. Despite the significant challenges global and local agriculture face in achieving optimal outputs and securing food for the world population, the wealth of geospatial data and technological advancements plays a crucial role. They aid decision-makers in formulating strategies to combat various pests and diseases affecting plant health and food crops, thereby contributing to improved agricultural outcomes and food security. This chapter provides a comprehensive appraisal of existing literature to elucidate the role of geospatial technologies, encompassing Geographic Information System (GIS), remote sensing, and the Global Navigation Satellite System (GNSS), which are utilized for data collection, mapping, analyzing distribution, and predicting events related to plant health.

Sustainable agricultural production is endangered by several ecological factors, including biotic & abiotic stresses. Biotic stress is the stress as a result of damage done to an organism by other living organisms. The agents of biotic stress are fungi, bacteria, virus, nematodes, insects, weeds & other plants which reduces quality and production of crops. These challenging environmental factors may have adverse effects on future agriculture production. Breeding resistant cultivars is considered as the best strategy to mitigate the effect of biotic stress. It is durable, economical & environment friendly and provide broad-spectrum resistance. Widely cultivated but susceptible genotypes can be improved by introgression of resistance genes from donor genotype into the background of recurrent genotype by different breeding strategies. In modern agriculture, conventional crop-breeding strategies alone are inadequate for achieving the increasing population’s food demand on a sustainable basis. The advancement of molecular genetics and related technologies are promising tools for the selection of new crop species with resistance genes. Transfer of several genes or quantitative trait loci (QTL) with potential characteristics into a single widely cultivated genotype is possible through the process of marker assisted selection (MAS). Gene pyramiding through MAS have accelerated the development of durable resistant/tolerant lines with high accuracy in the shortest period of time. With marker assisted backcross breeding (MABB), a major gene can be precisely targeted, the genome of the recurrent parent can be recovered fast, and linkage drag can be reduced. Genomic selection (GS) allows selection for multiple traits directly in the genome. These techniques help in identifying plants with two or more genes by employing gene-linked markers without the need for repeated testing in each generation during the development of pyramided lines and hence shorten the time of breeding program.

While the fourth agricultural revolution has been sparked by technological advancements, humans still face many challenges in achieving agricultural resilience to meet the demands of the world’s expanding population, including declining croplands, depleting water supplies, the negative effects of climate change, and more. On the one hand, food and dairy products are in increasing demand due to the growing population. On the other hand, an increasing number of variables pose a threat to food security and sustainable food production, including globalization, climate change, scarce land and water resources, unsustainable land management techniques, pests and diseases becoming resistant to chemical pesticides, and the emergence of pathogens that have adapted to new hosts. The integration of geographic information systems (GIS), remote sensing, and artificial intelligence (AI) in geospatial approaches offers a solid foundation for the sustainable management of agricultural resources with the goal of boosting agricultural output. These days, local, regional, and worldwide agricultural production uses these sophisticated instruments more and more. Growers have been more interested in implementing precision agriculture during the past ten years. Precision agriculture is a crop-management method that takes into account the temporal and geographical heterogeneity of soil and crops within a field. Another agricultural technique that is being promoted as a future development that will enable the world’s population to be fed sustainably is precision agriculture. The broad use of geographic methods for agricultural resource management, including crop disease monitoring and pest infestation control, is the main topic of this chapter.

Plant disease management technique applicable these days are predominantly relies on hazardous synthetic chemicals that are efficiently deleterious to the human and environment as well. Crop loss every year due to plant pathogen and pest is ranging 30–50%. Nanotechnology, proven advantageous and can offer positive environmental impacts over these harmful chemical pesticides by reducing toxicity, increasing the feasibility of pesticides which are normally baffling in water and improving longevity. Now a days and in coming year, it becoming one of the rapidly growing, advancing and most fascinating technological sciences in many disciplines like medicine, science, technology and more importantly in agriculture, to protect crop from different kinds of pest and pathogen on which most of India’s population is completely dependent. This chapter briefly describe the introduction, role and impact of nanotech in management of plant disease. It is considered as modern technology in facing these widespread destructive challenges and causes in controlling in plant disease. In this chapter we tried to summarize the importance of nanotech in sustainable agriculture and application of various nanoparticles (NPs) in the management of plant disease. NPs can be produced by distinct practices, biological and chemical are one of them important methods. Biological method is widely and commercially used. Also, shortly describe the historical background for some NPs types. This chapter briefly focus on the synthesis of some compounds of NPs, for example silver NPs, silver and silica silver etc and their influence on plant disease also briefly describe the working principle of AgNPs against microorganism. NPs may act in accordance with chemical pesticides. Because of microscopic size, NPs have wide scope in virus control in plant. Now day’s biosensors are used for the quick and precise pathogen detection and diagnosis. Regardless of immense scope of NPs application in managing the diseases of plant, there are precise apprehensions, weakness and risk associated with the utility of NPs in agriculture. It is necessary to be figured out on primacy basis prior to trade of NPs in agriculture.

The agriculture sector faces significant challenges in mitigating the detrimental impacts of pests and diseases on crop yield and quality. Traditional methods of pest and disease management often fall short in providing timely and precise interventions, leading to substantial economic losses and environmental consequences. In recent years, the integration of geo-spatial technology has emerged as a promising approach to address these challenges by enabling more accurate monitoring, prediction, and management of pests and diseases.

The integration of geo-spatial technology in pest and disease management within agricultural practices represents a significant stride towards precision agriculture. This chapter delves into the innovative application of geospatial tools in identifying, monitoring, and mitigating pests and diseases, thereby optimizing crop yield and quality while minimizing environmental impact. Beginning with an overview of the challenges posed by pests and diseases in agriculture, the chapter highlights the limitations of traditional methods in effectively addressing these issues. It then explores how geo- spatial technology, encompassing Geographic Information Systems (GIS), remote sensing, and global positioning systems (GPS), revolutionizes pest and disease management by providing real-time, spatially explicit data. The discussion extends to the utilization of satellite imagery and aerial drones for early detection and monitoring of pest infestations and disease outbreaks. Through case studies and examples, the efficacy of geo-spatial technology in mapping pest distribution patterns, predicting outbreaks, and implementing targeted interventions is elucidated.

Agriculture plays a pivotal role in India’s economy, it shares 18.2 % (202324) in country’s GDP at current prices and employs 42.3 % of the Indian workforce, particularly in rural areas, making it one of the largest sources of livelihood (Anon., 2024). With 1.41 billion peoples, India is the world largest populous country and agriculture is crucial for ensuring food security. India’s agricultural exports also significant in boosting its economy through generating foreign exchange of 53 billion dollars in 2023 and contributing around 11.8% to total exports (Statista, 2023). India is the largest producer of milk, millets, banana, sapota, cashew nuts, coconuts, tea, ginger, turmeric, black pepper and second largest producer of wheat, rice, sugar, groundnut and in the world (APEDA, 2024). The sector also provides raw materials for many industries, such as textiles and food processing. India achieved self-sufficiency in food grains after Green Revolution, using introduction of high-yielding varieties (HYVs) of crops, especially wheat and rice, chemical fertilizers, pesticides, and improved irrigation techniques, which dramatically increased crop productivity. The improved productivity also helped to increase farmers’ incomes, raise living standards in rural areas, and support the development of rural infrastructure. Moreover, surplus food production allowed India to build buffer stocks, which could be used to manage food shortages or price fluctuations.

Soil health management plays a pivotal role in sustainable agriculture and directly influencing plant growth, crop productivity and environmental quality. Healthy soils are essential for nutrient cycling, water retention and supporting a diverse array of microorganisms that contribute to plant resilience. However, modern agricultural practices, including the excessive use of chemical fertilizers, monoculture cropping and improper irrigation, have degraded soil health, leading to nutrient imbalances, reduced organic matter and soil erosion. This has sparked a growing awareness of the need for effective soil health management strategies that not only maintain but enhance soil quality. Innovative tools for soil health management are reshaping plant protection strategies by promoting holistic approaches that focus on maintaining and improving the biological, chemical and physical properties of the soil. These tools range from organic amendments and biofertilizers to advanced diagnostic technologies such as soil microbial profiling, remote sensing, and precision agriculture techniques. Together, they offer a comprehensive framework for addressing soil-related constraints and enhancing plant resistance to pests and diseases.

Sustainable approaches to crop protection that reduce the environmental impact of chemical pesticides. This text emphasizes the efforts of global organizations like FAO to promote sustainable agriculture through various methods, include Eco-friendly alternatives for controlling plant diseases. Focusing on cultivar selection, soil fertility, and Integrated Pest Management (IPM), along with organic farming practices to reduce the reliance on chemical pesticides. The importance of border inspections to prevent the spread of quarantine pathogens. The role of forecasting models, precision farming, nanotechnology, and endotherapy in modern disease management. Use of biocontrol agents, systemic resistance inducers, gene-silencing technology, and plant nutrition to control diseases sustainably. Engaging multiple sectors to implement sustainable crop protection solutions. These efforts aim to create a more balanced and sustainable approach to agriculture, fostering resilience against plant diseases while minimizing the environmental footprint of farming practices.

Chickpea (Cicer arietinum L.) is the third most important pulse crop grown all over the world. Chickpea is infested by an average of about 60 insectspests, of which gram pod borer, Helicoverpa armigera (Hubner) (Lepidoptera : Noctuidae) is known to be the key pest. Helicoverpa is responsible for causing up to 90 % damage in chickpea due to its regular occurrences. In order to manage this problem, growers are tempted to increase the amounts of pesticides, but indiscriminate or injudicious use of pesticides has resulted in residues in the food chain, pesticide resistance, and pest resurgence, in addition to causing harm to non-targeted beneficial organisms and the environment. Here, we reviewed the sustain- able approaches to reduce the incidence of pod borer and achieve sustainability in chickpea production systems through the adoption of an integrated approach involving host plant resistance, good agronomic practices, and judicious use of chemical and biological methods.

Insects are prevalent on this globe due to their varied adaptations and hence constitute the largest component of the animal kingdom. Only around 5 per cent of the total insect species, act as pests, rest either are beneficial like honey bees, lac insect, silk worms etc. or are harmless. Insect pests can be of medical, veterinary, house hold and agricultural importance, as these creatures harm our health, animals’ health, our belongings and also the agricultural health. Though all these components are equally important but, in this book, the last one i.e. agricultural health, have been taken into consideration. Insect pests cause around 20 per cent loss to our crops by directly or indirectly affecting the crops both quantitatively and qualitatively. The insects have different types of mouth parts which are used for sucking, biting and chewing, sponging and lapping, siphoning etc. for food required for their survival and the insects with sucking and biting, and chewing types of mouth parts cause much of the damage. The mites (Phylum Arthropoda) though do not belong to class Insecta but in some instances also are of economic importance as they cause economic damage to agricultural crops and produce.

Various insect and mite pests infest fruit and plantation crops in different stages of crop growth directly or indirectly causing significant losses, hence need their management. The major pests of different fruit and plantation crops, their identification characters, life history, nature of damage and symptoms alongwith its management practices are described crop wise:

Temperate fruits

Pome fruits and stone and nut fruits are mainly cultivated in the temperate regions, which usually requires chilling requirements. Among stone and nut fruits cherry, apricot, peach and plum are the main crops whereas among the nut fruits, walnut, almond are major crops which are a source of handsome income to the orchardists of those areas. The insect and mite pests of pome, stone and nut fruits are described hereunder:

The stone fruit crops namely peach, Prunus persica, plum, Prunus domestica, apricot, Prunus armeniaca, almond, Prunus dulcis and walnut, Juglans regia are grown in wide range of climatic conditions ranging from subtropical to temperate regions. Peach and plum are also cultivated in mid and low hills in addition to temperate regions. Peach is the major stone fruit crop followed by plum, apricot and cherry. Walnut and almond on the other hand are major nut crops. A number of insect pests (~80) infest stone and nut fruits in various stages of the tree growth and development and cause direct and indirect loss out. Only few pests are of economic concern, the details of which are given hereunder

Peach leaf curling aphid, Brachycaudus helichrysi (Kalt.), Aphididae: Hemiptera

It is a polyphagous pest reported infesting 175 plant species of 115 genera of 49 families. It is a regular and key pest of stone fruits viz. peach, nectarine, plum, apricot and almond and

Subtropical and Tropical Fruits

Most of the area of India experience subtropical and tropical climate. Subtropical and tropical fruits contribute maximum to the overall fruit production. Major fruit crops cultivated in subtropical and tropical region are citrus, mango, litchi, guava, sapota, pomegranate, banana, ber, sapota, grapevine, papaya etc. Various pests affect the fruit production by infesting at various stages of the tree growth quantitatively as well as qualitatively. The pests of these crops are described fruit wise.

Citrus

Most of the area of our country is tropical and subtropical, where the citrus, Citrus spp. cultivation is practiced and main citrus growing areas are in Maharashtra, Andhra Pradesh, Punjab, Karnataka, Uttarakhand, Bihar, Orissa, Assam and Gujarat. As for as the ranking in the world

Mango, Mangifera indica is indigenous to India and ranks at number one as for as production and export are concerned. The productivity of mango in India is low (6.6MT/ha) and one of the reasons for the same is pests associated with the crop at varying stages of the tree growth. Around 175 insect pests have been reported to infest mango but only few are the major pests the details of which re provided hereunder:

Mango hopper, Idioscopus clypealis (Lethiery); I. niveosparsus (Lethiery); Amritodus atkinsoni (Lethiery) (Cicadellidae: Hemiptera) Hoppers constitute one of the most destructive pests of mango throughout the country. The eggs are dull white and concealed inside tissue. The colour of the nymphs vary from dust yellow to pale yellow and these nymphs walk in a crab like manner. The adults are small wedge shaped grayish insects measuring3.4-5.1mm in length. Amritodus atkinsoni is comparatively bigger and light brown in colour with two spots on scutellum, while Idioscopus clypealis is smallest and lighter in colour with dark spots

Litchi, Litchi chinensis, is one of the important fruit crops of South East Asia and Australian Continent. The crop thrives well in sub-tropical areas experiencing cool dry winters and warm wet summers. India and China are the major producers of litchi in the world. In India, Bihar, Uttarakhand and West Bengal contribute maximum in litchi production. Few major insect pests and mites are of concern, the details of which are as under:

Red rust, Eriophyid mite, Aceria litchii Keifer (Eriophyidae: Prostigmata) and red rust alga, Cephaleuros virescens Kunze (Trentepholiaceae: Trentepohliales)

Guava, Psidium guajava is one of the important fruits of tropical- sub-tropical regions of the world. It is a native of American tropics and probably originated from Peru north to Mexico and the Caribbean. The major producing countries include India, Brazil and Mexico, of which, Brazil is the largest producer of guava in the world. In India, it is grown over an area of over 2, 05,000 hectares with a production of 2.46 million metric tonnes. The fruit is rich in vitamin C and A. It is used both for processing and for table purpose world over. More than 80 insect pests have been reported to inflict varying degree of damage at different stages of crop growth. The important ones of these are discussed hereunder;

Ber, Ziziphus mauritiana is indigenous to India and was called as poor man’s fruit earlier. But now it has become a good source of income to the orchardists, in the arid and semi-arid regions of the country, mainly with the development of new varieties. A number of insect pests (around 150) infest the ber tree but only few are the major ones, the description of which is provided below:

Fruit fly, Carpomya vesuviana Costa (Tephritidae: Diptera)

It is a major pest of ber in all the ber growing regions and proves as a bottleneck in its production and productivity. It is monophagous and develops only in fruits of Ziziphus spp. Most of the cultivated varieties are susceptible to this direct pest. The eggs are small, elongate, spindle shaped and creamy white. Maggots are creamy white (Plate 9a) and slightly smaller than maggots of other fruit flies. Pupae are barrel shaped and brown. Adults are smaller than housefly, brownish yellow with brown longitudinal stripes on the thorax. This fruit fly can be distinguished easily from other species due to distinctive pattern of black marks on the scutum and scutellum (Plate 9a). Wings are hyaline with four yellow cross bands.

Pomegranate, Punica granatum is a non-climacteric fruit belonging to smallest Botanical family Punicaceae. In India, Maharashtra is a leading producer of pomegranate followed by Gujarat. Around 90 pests are reported to feed on pomegranate plant out of which only few are of economic concern. The major insect pests and mites are discussed herewith:

Anar butterfly, Deudorix epijarbas (Moore); D. isocrates (Fabricius); (Lycaenidae: Lepidoptera)

Pomegranate fruit borer, commonly known as anar butterfly is a polyphagous direct pest found throughout the country. In addition to pomegranate, it also feeds on number of crops viz. litchi, citrus, loquat, guava, sapota, aonla etc. Even the wild pomegranate is heavily infested by the fruit borer. Two species namely Deudorix epijarbas and D. isocrates are reported feeding on pomegranate out of which the former is found in hilly terrain of Northern India whereas, the latter exists in the plains of the country. The eggs are glossy, light green and shiny. The larva is dark brown with short hairs and bears whitish patches all over the body (Plate 9d). The full fed larva measures 17-20mm. The adult of D. epijarbas is a brownish butterfly with an orange patch in the

Banana, Musa paradisiaca is one of the most important tropical fruit crops. India tops in the production of banana in the world and almost throughout the year banana fruit is available form one or another part of our country. Maharashtra, Tamil Nadu and Karnataka are the major states in cultivating and producing banana in India. The major insect pests associated with banana crop are described hereunder:

Banana weevil, Cosmopolites sordidus (Germar) (Curculionidae: Coleoptera)

It is most destructive and specific pest of banana and is distributed throughout the country. The eggs are elongate, oval (about 2 mm long), pearly white and present on upper surface and crevices of rhizome. The grubs are creamy white, stout, fleshy swollen in the middle and has red head capsule (Plate 10a). The full grown grub measures 15 mm in length. Pupae are white and found in the pupal chamber made in the periphery of rhizome. The newly emerged weevil is shiny reddish brown but soon becomes uniformly black (12.5mm in length). Longitudinal striations are found in the elytra and it does

Sapota, Manilkara zapota commonly called Chickoo is a popular tropical winter fruit cultivated widely in Gujarat, West Bengal, Telangana, Andhra Pradesh, Maharashtra and Tamil Nadu. In north, its cultivation is seen across Jammu to Dehradun. Very few insect pests infest Sapota, the details of which are given hereunder:

Sapota leaf webber, Nephopteryx eugraphella Ragonot (Pyralidae: Lepidoptera)

This is a pest of major concern in Chickoo cultivation in India. The eggs are oval and pale yellow in colour which change to reddish brown near hatching. The caterpillar is pinkish in appearance and bears two longitudinal dorsolateral lines. The full fed larva measures 25 mm in length. The newly formed light green pupa changes to reddish brown in the later stage. The adult is a greyish moth having hooked antennae (Plate 10e) bears two vertical lines on the forewing whereas, the hind wings

The cultivation of pineapple, Ananas comosus is prevalent in Kerala, Andhra Pradesh, Bihar and North eastern parts of the country. It is one of the choicest fruits all over the world because of its pleasant taste and flavour. Pineapple is a good source of vitamin A and B and fairly rich in vitamin C and minerals like calcium, magnesium, potassium and iron. It is also a source of bromelin, a digestive enzyme. In addition to being eaten fresh, the fruit can also be canned and processed in to different forms. The description of some of the major pests infesting pineapple are given hereunder:

Mealy bug, Dysmicoccus brevipes (Cockerell) (Pseudococcidae: Hemiptera)

It is a polyphagous pest and besides pineapple it infests banana, sugarcane, citrus, coffee and long pepper. These are small, oval and soft bodied sucking insects. The eggs are pink in colour but remain inside the female body. The first stage nymphs are called crawlers which moves to find a suitable spot for sucking of cell sap, thereafter they settle at a particular place. The adult is elliptical and bears 17 pairs of wax filaments (Plate 10h). The colour of the pest is pink but looks white due to white waxy covering. The mealy bug first infests root and later they are found

Grape, Vitis vinifera are cultivated mainly in the sub-tropical and tropical regions, however, it can also be grown in the temperate regions. Telangana, Andhra Pradesh, Karnataka, Maharashtra, Tamil Nadu are the main grape growing states. In India, the grapevine cultivation is mainly for producing fruits for the table purpose. Around 80 insect pests and mites cause damage in the grape vine yards directly or indirectly, of which few are of major importance. The damage can be checked if the details of the major pest problems are known in advance. The details about major insect pests and mites are given hereunder:

Thrips, Rhipiphorothrips cruentatus Hood (Thripidae: Thysanoptera)

It is a polyphagous pest feeding on number of hosts like rose, jamun, guava etc. but grapevine is the most preferred host. This pest is prevalent in all grapevine growing regions of the country. The eggs are bean shaped and dirty white. The nymphs are yellowish brown with reddish brown abdomen. The pupa is brownish and have irritative movements on

Papaya, Carica papaya is a fruit mainly grown in tropical and sub-tropical regions. India is top most producer of papaya in the world and accounts for around 45 per cent of the total papaya production in the world. In India, the main cultivation of papaya is in the states of Telangana, Andhra Pradesh, Orissa, West Bengal, Kerala, Karnataka, Madhya Pradesh, Tamil Nadu and Gujarat. In north, due to frost problem, the cultivation is fruitful only in frost free areas as this fruit crop is highly frost sensitive. Few insect pests are of major concern in the cultivation of papaya, the description of which is given hereunder:

Papaya mealy bug, Paracoccus marginatus Williams & Granara de Willink (Pseudococcidae: Hemiptera)

It is an invasive pest believed to be a native of Mexico or Central America. In India, it was first reported in Tamil Nadu during July 2008 infesting papaya and later it spread to number of fruit, vegetables and ornamental crops in many states. The eggs are grain like and greenish yellow. The nymphs as well as adult is yellow but appears white due to waxy coating over its body

Aonla or Indian gooseberry, Emblica officinalis is indigenous to Indian sub-continent. India ranks first in the world in area and production of this crop. Aonla is mainly cultivated in the states of Uttar Pradesh, Maharashtra, Gujarat, Rajasthan, Andhra Pradesh, Karnataka, Tamil Nadu, Himachal Pradesh etc. It performs well even in the wastelands. Aonla is a plant of great medicinal value and its fruits are a rich source of vitamin C. It has acrid, cooling, diuretic and laxative properties. Dried fruits are useful in hemorrhages, diarrhoea, dysentery, anaemia, jaundice, dyspepsia and cough. Aonla is used in the indigenous medicines (Aurvedic system) viz. trifla and chayvanprash. Fruits are commonly used for preserve (murabbas), pickles, candy, jelly and jam. Besides fruits, leaves, bark and even seeds are being used for various purposes. Very few insect pests are reported on aonla and the details of which are provided here under:

Mealy bug, Planococcus citri Risso (Pseudococcidae: Hemiptera)

It is a highly polyphagous pest feeding on wide range of cultivated/ uncultivated plants. Citrus, mango, guava are few major hosts besides aonla. The bug is a small soft bodied insect the female of which is wingless

Fig, Ficus carica grows in both mild temperate climates and in the tropics. In India, it is a minor fruit crop and the commercial cultivation is mainly confined to Maharashtra, Gujarat, Uttar Pradesh, and Tamil Nadu though is slowly spreading to warmer areas of Northern parts of the country. Very few insect pests come under the major category, the description of which is provided below:

Stem borer, Batocera rufomaculata (Cerambycidae: Coleoptera)

It is commonly known as mango and fig borer. The adults of this pest bear long serrated antennae and are also called as longicorn beetles. The adults get attracted to light. The female cuts the tree bark and lays eggs singly into these cuts, laying a total of up to 200 eggs. On hatching the larvae start to tunnel into the sapwood of the trunk or branches. The larvae pupate inside the tunnel and the adult comes out of pupae by cutting a circular hole. Frass comes out

Plantation Crops

Plantation crops occupy an area of around 4 million hectares which is about 2.8 per cent of the total cropped area. However, the export potential of these crops is high and they account for 27 per cent of total agricultural export. The common plantation crops include coconut, oil palm, areca nut, tea, coffee, cocoa, cashewnut and rubber etc. Various pests infest these crops at different stages and cause economic damage. The crop wise details are as under:

Coconut Coconut,

Cocos nucifera also known as ‘Kalpa Vriksha’, as all the parts of the tree are utilized in one or other way. India is the largest producer of coconut in the world. Kerala, Karnataka, Tamil Nadu and Andhra Pradesh accounts for 90 per cent production of coconut. The other states namely West Bengal, Odisha ,Gujarat, Assam and Bihar contribute around 10 per cent of the total coconut producción. Pests at different stages of crop growth infest coconut tres, resulting in significant economic damage.

India is the largest producer and consumer of areca nut, Areca catechu also known as betel nut or supari, in the world. It also holds significant cultural and religious importance. Major cultivation is done in Karnataka, Kerala, Assam, Tamil Nadu, Meghalaya and West Bengal. Spindle bug and inflorescence caterpilar are the major pests alongwith root grub, the details of which are provided hereunder:

Spindle bug, Mircarvalhoia arecae (Miller and China) (Miridae: Hemiptera)

It is a major indirect pest of arecanut plantations in all arecanut growing tracts. Eggs are oval having 2 bristle like structures arising from operculum. The nymphs are greenish to violet brown, thorax and border of the abdomen light violet brown and head is light yellow with red eyes. The adult is a hairy dark violet brown bug with black tipped abdomen (Plate 12h) and measures 6mm in length and 2mm in breadth.

Cashewnut, Anacardium occidentale is one of the important plantation crops grown for its delicious kernel. It is mostly grown in coastal belts of South-West and South-East India including the states like Maharashtra, Goa, Karnataka, Kerala, Tamil Nadu, Andhra Pradesh, Odisha and West Bengal and also in the non-traditional areas including inlands of central India and parts of Northeastern regions. It is an important cash crop and has attained the status of export-oriented commodity. In India alone around 200 insect pests have been reported on cashew causing damage during different stages of crop growth. Stem and root borer and Tea mosquito bugs, blossom webber and leafminer pests of economic importance, the details of which is given hereunder:

Stem and root borer, Plocaederus ferrugineus L. and P. obesus Gahan (Cerambycidae: Coleoptera)

It is a very serious pest of cashew in both east and west coasts of India. It is also recorded on sapota, drumstick and citrus trees. Among the two species, P. ferrugineus is the commonly occurring species. Eggs are pale white, ovoid and smooth measuring about 4.5 x 2.0mm. The grubs are stout, fleshy ivory yellow with dark brown head and wrinkled body without legs, and measures 75mm in length, when full grown. The adult of P. ferrugineus is a medium sized (2540mm) dark brown longicorn beetle

Tea, Camellia sinensis is one of the most important beverage crops. India is the second largest producer of tea globally. North eastern parts contribute to 80 per cent of the total tea production in the country with majority coming from Assam and West Bengal. Southern parts contribute around 20 per cent with Tamil Nadu, Kerala and Karnataka being the major tea producing states. About 150 insect pests are reported on tea out of which foliage feeders like Tea mosquito bug, bunch caterpillar and mites act as direct pests. The details of major insect pests are being given hereunder:

Tea mosquito bug, Helopeltis antonii Signoret and H. theivora Waterhouse (Miridae: Hemiptera)

This is one of the major pests of tea in India and besides tea it also infests cashew, neem, drumstick and guava. The eggs are sausage shaped and bear two minute hairs on operculum, which project out of the egg. Nymphs of H. antonii are reddish and ant-like, while those of H. theivora are dirty yellow or greenish yellow. The adult of H. antonii is a reddish-brown bug with black head, red thorax and black and white abdomen, whereas, the adult of H. theivora is a small, active elongated bug with black or olive green head

India produces two types of coffee i.e. arabica, Coffea arabica and robusta, C. canephora. The former has higher market value than the latter. Coffee is cultivated mainly in the Southern parts of India with Karnataka, Kerala and Tamil Nadu being the major coffee producing states. Some of the major pests which limits the cultivation of coffee are described below:

White stem borer, Xylotrechus quadripes Cheverolat (Cerambycidae: Coleoptera)

It is a serious pest of Arabica coffee in India. Alternate host plants include Robusta coffee, teak and Indian olive tree. Eggs are milky white when freshly laid but turns yellow later on. These are elongate, oval in shape and measures 1.25 –1.28 mm in length and 0.46 – 0.5 mm in width. The adult is a dark brown longicorn beetle (16mm long) and bears several white markings on the elytra (Plate 14c). The pale yellow stout full grown grub broader towards the anterior most region, measures 20-30 mm in length.

Cocoa, Theobroma cacao is an important commercial plantation crop of humid tropics. It was introduced as a mixed crop in India and is cultivated in coconut and arecanut plantations large scale from 1970 onwards. It is grown as an under- storey intercrop with sufficient shade in southern states of India. Tamil Nadu is the major cocoa producing state in India. Some pests of economic importance are described hereunder:

Mealy bugs, Planococcus lilacinus (Ckll.) and P. citri (Pseudococcidae: Hemiptera)

These two species are most prevalent in all cocoa growing tracts of the country. Beside cocoa, it also infests coffee, citrus, guava, mango, etc. The adult female is an oval wingless insect which measures 4mm in length. The body colour is chocolate brown and the dorsal body surface is covered with thick waxy covering (Plate 14g). The male is winged and free living.

RICE (Oryza sativa)
Fungal diseases
1. Blast
Symptoms: All above ground parts (leaf, leaf sheath, culm) of the plant are affected. There are three type of blasts (leaf blast, node blast, neck blast)
Leaf blast: Eye or spindle shaped spots on leaves (margin is dark brown and centre becomes ashy) and leaf sheath are observed. Several spots appear on the leaves cause blightening.

FINGER MILLET (Eleusine coracana)
Fungal diseases
1) Blast
Symptoms: The above ground parts (leaf, leaf sheath, stems) of the plant exihibit the symptoms. The seedlings and adult plants are affected by the pathogen. Eye-shaped spots appear on leaf and leaf sheath having dark brown margin with ashy centre. These spots coalesce to form large patches and the leaves are blighted. Affected leaves wither prematurely and the seedlings may be killed. Lesions appear on the leaf blades, leaf sheaths and culms on adult plants and cause blightening.

GREEN GRAM (Vigna radiata) & BLACK GRAM (Vigna mungo)
Fungal diseases
1) Seed and seedling rot
Symptoms: The seeds rot before germination and after germination the seedlings also show rotting. The disease can be easily identified by poor germination and poor stand of the crop.
Causal organisms
i) Fusarium sp
ii) Pythium sp
iii) Rhizoctonia solani
iv) Macrophomina phaseoli
 

GROUNDNUT (Arachis hypogea)
Fungal diseases
1) Collar rot
Symptoms: The hypocotyls of germinating seeds are infected. The germinating seeds become covered with sooty black masses of spores. The infected tissues become dark brown and shredded. Necrosis and shredding of tissues may extend into branches.
The organism is both soil borne and seed borne.
Causal organism: Aspergillus niger
Management
i) Seed treatment with Carbendazim 50% WP @ 2-2. 5g/kg or Carboxin 37.5% WP +Thiram 37.5% WP @ 3gm/kg of seed.
ii) Growing of resistant varieties like Smruti

COTTON (Gossypium spp)
Fungal diseases
1) Damping off
Symptoms: The seeds may rot. Initially the roots and hypocotyls become water soaked and pale green in colour. The hypocotyls become constricted above the soil level and seedlings fall down. Causal organism: Pythium aphanidermatum
Management
i) Seed treatment
ii) Growing of resistant varieties.
2) Root rot
Symptoms: Roots of infected plants rot and show shredding of the bark. The affected plants can be easily pulled out.
Causal organism: Rhizoctonia solani

SUGARCANE (Saccharum officinarum)
Fungal diseases
1) Red rot
Symptoms: It is one of the most destructive disease of sugarcane. Dark reddish spot with brown margin appear along the mid rib. When the diseased canes are split open red blotches with transversely elongated white centres are seen. Under humid conditions numerous black dot like acervuli develop in the central discoloured portions. The diseased tissues emit a typical alcoholic odour. The juice of the affected stalks gives a sour alcoholic smell.
Causal organism: Colletotrichum falcatum
Management
i) Select healthy and disease free setts.
ii) Dip the setts on Carbendazim 50% WP or Thiophanate Methyl 70% WP @0.15% solution for 30 minutes before planting.
iii) Avoid rationing of infested crops.
iv) Growing resistant/tolerant varieties, i.e. Co6907, Co 7219, Co838,
 

MINT (Mentha sp)
Fungal diseases
1. Stolon Rot
Symptoms: Yellowing of leaves is observed at early stage of infection. In later stage wilting of plants are noticed followed by drying of the entire plants.
Causal organism: Macrophomina phaseoli
Management
i) Stolons should be collected from healthy fields.
ii) Use of healthy and disease free stolons for planting.
ii) Treatment of stolons with Metalaxyl 8% + Mancozeb 64% WP (0.3%)
before planting.
2. Rust
Symptoms. In the spring or summer season the leaves and upper portion of stems are affected and become twisted. Yellow/ dusty orange pustules appear on the leaves and stems. In later part the pustules become black. Drying of leaves followed by defoliation occur.

BERSEEM CLOVER (Trifolium alexandrinum)
Fungal diseases
i) Damping-off
Symptoms
Pre-emergence damping-off: Seeds decay inside the soil.
Post-emergence damping-off: Sometimes after germination water-soaked blighted seedlings develop. Seedlings collapse and wilt. Stem and root tissues rot below the soil surface.
Causal organism
i) Pythium spinosum var. spinosum
ii) Rhizoctonia solani
Favourable condition
i) Promoted by high humidity
ii) Poor air circulation.

Plant Pathology
The term Plant Pathology is derived from greek words- pathos (suffering) + logos (study) i.e. the study of the suffering plant. Plant Pathology has two phases broadly-
• Science- Understanding of the disease i.e. the theoretical consideration of the suffering plants and how do pathogens invade, how do plants defend themselves, what causes symptoms etc.
• Art- The application of the science to the field problems i.e. Diagnosis and Control.
Plant pathology or phytopathology is the branch of agricultural, botanical or biological science which deals with the cause, etiology, resulting in losses and management methods of plant diseases. 
Plant pathology can also be defined as the study of the nature, cause and prevention of plant diseases. Plant pathology is related to most of the old and new sciences like biology, physics, chemistry, physiology, mathematics, genetics, soil science, biochemistry, biotechnology etc.

Disease
Disease is one of those terms that are very difficult to define. It is realized that disease (literally dis-ease) implies lack of ‘comfort’and therefore, involves deviation from normal functioning. From time to time several definitions which have been proposed, in fact descriptive but not simultaneously exclusive. The definitions for the term disease are:
• Disease is a malfunctioning process that is caused by continuous irritation, which results in some suffering producing symptoms.
• Disease is an alteration in one or more of the ordered sequential series of physiological processes culminating in a loss of coordination of energy utilization in a plant as a result of the continuous irritation from    the presence or absence of some factor or agent.
• Disease is any morphological or physiological abnormality in a plant or any of its parts caused by continuous irritation and results in economic losses to human beings.
• Any deviation from normal growth or structure of plants that is sufficiently pronounced and permanent to produce visible symptoms or to impair quality and economic value.
• A plant is said to be diseased when there is a harmful deviation from normal functioning of physiological process .