eChapters

Drip system has great promise for efficient utilization of available irrigation water. In our country and elsewhere in the world the scientists are unanimously agreed to adopt drip irrigation method for higher application efficiency and thereby better use of scarce irrigation water. Saksena (1993) reported water losses of only 1-2% in drip irrigation in comparison to 6-9% in sprinkler and 30-35% in surface irrigation method. However, very small area compared to other methods of irrigation so far is irrigated by drip system in our country. Up to 2000 the total area under drip irrigation was 2,59,600 ha in India (Alam & Kumar, 2000). Initial high investment for drip network and pumping system, of course, are discouraging to the most of our farmers. Sharma & Abrol (1993) mentioned that in spite of the very encouraging results and attractive subsidies offered by the Govt. of India, the adoption of the drip irrigation system has not picked up to the expected level. Along with the other reasons they pointed out the high initial cost of the system and lack of research effort on developing cost-effective design suited to local condition are responsible for non-practice of drip irrigation at a considerable scale.

Some research works has been conducted to find out low cost method of drip irrigation. Biswas (1998) developed a manually operated drip irrigation system made of bamboo mains, laterals and sub-laterals. The system and its performance are described below.

Drip Network

The main and laterals of the drip network were made of hollow bamboo pieces each of 3m lengths with 7.5cm and 4.0cm diameter respectively. The sub lateral or the emitters were the bamboo twigs of 0.25cm inside diameter and 1.05-1.10m length to suit the spacing between the plant rows. The mains and laterals were made for the required length in the field by jointing together the sections one after another (Fig. 7.1). The ends of two sections, which contact each other, were made such that one section easily gets inside the other for about 10-15cm.

Farmers’ data collection can be a valuable input for the development of agrometeorological advisories because it provides a unique perspective on the local weather and climate conditions that affect their crops and farming practices. Farmers have a deep understanding of the local environment and are often able to observe subtle changes in weather patterns and soil conditions that may not be captured by traditional meteorological instruments. By collecting data on weather patterns, soil moisture, crop growth, and other factors, farmers can provide valuable insights into the complex relationships between weather, climate, and agriculture. This data can be used to improve the accuracy and relevance of agrometeorological advisories, which are critical for helping farmers make informed decisions about planting, irrigation, pest management, and other aspects of crop management. By incorporating farmers’ data into the development of these advisories, researchers and policymakers can create more effective and targeted recommendations that take into account the specific needs and conditions of local farming communities. Furthermore, the collection of farmers’ data can also help to identify gaps in existing meteorological data and provide insights into the impacts of climate change on local agriculture. This information can be used to inform the development of more effective climate adaptation strategies and to support the creation of more resilient and sustainable agricultural systems.
In addition, the involvement of farmers in data collection can also help to build trust and promote the adoption of agrometeorological advisories. By working closely with farmers and incorporating their knowledge and expertise into the development of these advisories, researchers and policymakers can create more effective and sustainable solutions that meet the needs of local farming communities. Overall, the collection of farmers’ data can provide a valuable input for the development of agrometeorological advisories, helping to create more effective, targeted, and sustainable solutions that support the needs of local farming.
5.1 Low Cost Instrumentation
The use of low-cost instrumentation in agriculture is essential for enabling farmers to collect accurate and reliable data on various parameters that affect crop growth, soil health, and farm management. In many developing countries, smallholder farmers lack access to expensive and sophisticated equipment, making it difficult for them to make informed decisions about their farming practices

Abstract

In this investigation the low dose effects of pesticides were analyzed both in vitro and in vivo in peripheral blood samples from healthy donors and also in farmers occupationally exposed to pesticides. In vitro studies were conducted to assess the toxicity caused by commonly used pesticides like monocrotophos, profenofos, chlorpyriphos, endosulfan, acephate on lymphocytes from peripheral blood samples. In almost all experiments we could determine chromosomal aberrations and DNA damage at 1/10th of LC50 dosage of the pesticides. For analyzing the in vivo effects, epidemiological studies were conducted in pesticide exposed agricultural workers. The 200 exposed volunteers suffered from fever, nausea, headache and other abnormal symptoms and visited the hospital for general health check-up. These cases were taken up for more detailed studies. Five of them (2.5%) showed decrease in RBC, haemoglobin, and increase in WBC with a large number of immature cells. These volunteers were further diagnosed as Philadelphia negative Chronic Myeloid Leukemia (CML) cases based on clinical and pathological examinations. In similar environs, about 3% of the exposed children showed signs of mental retardation and delayed milestones. It is therefore, concluded that clinical evaluations supported by occupational epidemiology could determine CML in exposed individuals (adults). At low doses we have traced the effect of pesticides at molecular level.

Low external input agriculture developed as a concept in the 1980s, gaining ground with the establishment of the Information Centre for Low External Input and Sustainable Agriculture in 1984 (Kessler and Moolhuijzen, 1994). Low external input agriculture developed as a response to the criticisms surrounding Green Revolution technology being neither sustainable nor feasible for many small-scale farmers around the world.

Low external input agriculture developed as a response to the criticisms surrounding Green Revolution technology being neither sustainable nor feasible for many small-scale farmers around the world. The concept aimed to redesign the agricultural system by optimising the use of biological resources, keeping changes to the natural ecosystem as well as the use of external inputs at a minimum (Pimentel et al., 1989).

Introduction

Feed is the main contributor to economic and environmental costs of poultry production. This applies in particular to the protein fraction of the diet as the protein constitutes the second abundant and the most expensive nutrient in the broiler diets. Quantitatively, protein rich feed sources constitute 25 to 40 per cent of the diets, next to cereal grains as energy sources accounting for 60 to 70 per cent. In terms of input cost, protein sources account for 40 to 50 per cent of feed cost as these ingredients are highly expensive and play a major role in determining the cost of broiler production.

Maintaining the quality of fish begins with harvest and carries through the harvest-to- consumption chain. Careful handling of fish and shellfish while harvesting and during transport to the processing plant is critical if the high quality of the product is to be maintained. There are, however, several constraints on handling the fish; the important among them are the bacteriological, chemical and physical processes that cause degradation of fish. The surface of dead fish is an ideal growth habitat for bacteria and the end result of such activity is spoiled fish. Reduction of temperature can prevent the growth of many bacteria that cause the spoilage. Chemical breakdown due to oxidative and enzymatic reactions can lead to off odours and flavours and rancidity. Digestive enzymes can initiate decomposition in the dead fish. Physical factors can enhance the bacteriological or chemical processes: bruising, tearing, cutting etc. can expose fish muscle to more rapid bacteriological growth, cause internal bleeding which darkens the fillets and expose greater surface area for chemical oxidation.

Since fish is a highly perishable item of food, it has to be immediately processed to various products to preserve the quality and to increase the shelf life. Fish requires proper handling and preservation to increase its shelf life and retain its quality and nutritional attributes. The objective of handling, processing and preservation is to control or reduce the spoilage process so that the final product is wholesome and safe for the consumer. Fish and fishery products brought to market in a well-preserved condition will generally command higher prices, both at wholesale and retail levels, and thus give better returns to the fishing operation.

Low temperature preservation by chilling and freezing methods are widely practiced to maintain the quality and freshness of fish and fish products. Chilled storage method, i.e., keeping the fish in the unfrozen condition has only limited shelf life and it will vary between 4 and 20 days depending on the condition and species of fish. In frozen storage also the shelf life is restricted but it varies from few weeks to years. The various factors that affect the frozen storage shelf lives are condition of fish at the time of catch, handling, processing and product development, packaging and glazing of the product, freezing method adopted, frozen storage temperature, stacking methods and transportation techniques. These factors can be put together and can be termed as ‘Product, Processing and Packaging’ (PPP) and ‘Time Temperature Tolerance’ factors (TTT).

INTRODUCTION

Food is the basic need of human beings. It gets spoiled primarily due to microorganisms and enzymes. Energy is required for microbial growth and enzymatic reactions. At low temperature, the rate of biochemical reactions is slow resulting in prolonged storage life of food. It must have been observed long back that food could be stored for longer period without deterioration during the winter months. Since then this principle is being used to extend the storage life of foods. A sea change can be observed in development of low temperature preservation technology. It has travelled a long journey to reach this stage; however, a major break through took place in twentieth century. Low temperature technology is of two types; refrigeration and freezing. In refrigeration storage, water is in liquid phase and temperature is maintained above freezing point. In freezing technology, the food is stored below freezing point and water gets converted into ice. The former is short term preservation due to slow growth of microbes and lower enzymatic activity while the later is long time preservation due to inactivation of enzymes during blanching and inhibition of microbial activity due to unavailability of free water and much lower temperature. Low temperature preservation is widely accepted and is of commercially important in food supply chain.

Freezing : Freezing is a process where temperature of food (fruits, vegetable etc.) is lowered down considerably below freezing point so that the water present inside the food undergoes change in state from liquid to solid (ice) and gets frozen immediately eg Frozen Pea. Water is immobilized and solutes are concentrated to reduce the water activity.

Principles of preservation : Combination of low temperature, low water activity, and pre-treatments like blanching, dipping in sugar syrup etc. stop (reduce) the growth and activity of microorganisms.

Theory of freezing : Freezing takes place in two main steps

The term “low-maintenance” refers to a plant that does not require frequent maintenance such as regular watering, pruning, or spraying to remain healthy and to maintain an acceptable aesthetic quality. A low-maintenance plant has low fertilizer requirements and few pest and disease problems. In addition, low-maintenance plants suitable for India must also be adapted to or at least tolerate our poor, alkaline, sand or limestone-based soils. Both native and non-native species are included herein. Also, a variety of plants that are not commonly available in Indian nurseries or garden centres were intentionally included with the hope that increased demand will generate increased supply. Putting the right plant in the right place is of foremost importance in creating a healthy and successful low-maintenance landscape. However, this principle is dependent upon one’s ability to accurately select the right plant species for a given location. Common names are often misleading and sometimes more than one plant species may be referred to by the same or similar common name.

Low-temperature preservation is one of the most widely used physical approaches for extending food shelf life without seriously affecting quality. Reducing storage temperature slows microbial multiplication, enzyme activity and chemical deterioration, with inhibition increasing as temperature declines. Refrigeration maintains food above its freezing point, while freezing reduces temperature below zero and converts available water into ice. The chapter examines conventional refrigeration, advanced chilling, freezing, cryopreservation, superchilling and the influence of ice crystallisation on food quality. It explains how temperature, cooling rate and crystal size affect texture, nutritional retention and storage stability, while also addressing the limitations and quality changes associated with prolonged low-temperature storage.

DEFINITION

Lower level fracture in animals include any fracture of the region from knee joint to foot in forelimb and from hock joint to foot in hind iimbs.

CFERA’nVE PROCEOURE-H ere the principle of treatmient is application of cast and conjoint metal ‘U’ plate over the fractured site. Permanent immobilization of the limb should be done only after 7 days to subside.

Length to be covered-Forelimb-above knee joint and below foot. Hind limb-above hock joint and below foot, (as shown in fig.1)

Padding-6-12 layer thick padded cloth should be vmapped applying gum.s throughout the doth area, over the fracture, it should not be too tight but it should be strong. Sloughing off the hoof may result due to hypostatic congestion; hence the hooves should not be left open. (Cotton pad as shown in fig.2)

Fracture of meta-carpals and meta-tarsals comes under lower level fracture. Padded cloth and netted bamboo splint along with conjoint U plate has been considered as standard method of repair.

The fractufe is a lower level fracture involving the meta-carpal and meta- tarsal bones. (Fig.1 & Fig.2)

The fracture site is immobilized extending joint below and joint above level initially with cloth or cotton padding.(Fig.3)

Netted bamboo splint Is applied over it for support involving joint above and joint below which should not be too tight or too loose.(Flg.4)

Splints are retained in position by thread with knots. The ends of bamboo splint kept padded to avoid skin damage.(Fig.4)

More strength is given to immobilisation by application of conjoint U- plate.Conjoint U-plate is a U shaped metallic plate used for lower level fracture immobilisation. (Fig.5 & Fig.6)

At the end the entire bandage is covered with cloth or a bandage roll.The hoof should also be bandaged to avoid damage due to improper blood circulation.(Flg.6)

Lozenges are solid preparations that contain one or more medicaments, usually in a flavored, sweetened base, that are intended to dissolve or disintegrate slowly in the mouth. They can be prepared by molding (gelatin and/or fused sucrose and sorbitol base) or by compression of sugar-based tablets. Molded lozenges are sometimes referred to as pastilles, whereas compressed lozenges may be referred to as troches. They are used for patients who cannot swallow solid oral dosage forms well as for medications designed to be released slowly to yield a constant level of drug in the oral cavity or to bathe the throat tissues in a solution of the drug. Lozenges historically have been used for the relief of minor sore throat pain and irritation and have been used extensively to deliver topical anaesthetics and antibacterial.

Advantages

1. It is easy to administer to both paediatric and geriatric patients.
2. It has a pleasant taste and will extend the time a quantity of drug remains in the oral cavity to elicit local activity.

INTRODUCTION
The lubrication system in an engine plays a critical role in maintaining the smooth operation of its components. It serves to create a barrier between two surfaces that are in contact and moving against each other, reducing the friction that would otherwise lead to wear and tear. To understand the importance of lubrication, consider the effect of friction when two surfaces rub together; much like when rubbing your hands, friction generates heat, which over time can cause damage, such as burns to the skin. In the context of an internal combustion (IC) engine, friction between its moving parts can result in similar consequences, including excessive wear, heat buildup, and power loss, which ultimately impair engine efficiency and longevity.
The internal combustion engine consists of various moving components that are subject to constant friction as they operate. The pistons, crankshaft, camshaft, and valve mechanisms all move at high speeds within confined spaces, leading to the gradual wearing away of metal surfaces. Without proper lubrication, this friction would not only damage the engine’s components but also result in overheating and a significant reduction in the engine’s performance. The heat generated by this friction can increase the risk of engine failure, as it can lead to parts seizing or warping under high temperatures.
To combat these issues, the lubrication system is designed to reduce friction, dissipate heat, and protect the moving parts from wear. It ensures that a thin film of lubricant is constantly supplied to critical areas of the engine, forming a protective layer between metal surfaces. This helps to minimize direct contact between the moving components, thereby reducing friction and preventing unnecessary wear.
Moreover, lubrication contributes to cooling the engine by carrying heat away from the friction zones and dispersing it throughout the engine system.

Origin is generally accepted that the genetic/evolutionary origin of lucerne is in the near east center of Vavilof and that the species developed in Asia Minor, Iran and the highlands of Turkmenistan. All these areas have cold winters and hot dry summers. The soil is well drained with an approximately neutral pH and has subsoils with deposits of calcium (lime). Sinskaya, a Russian, asserts that lucerne originated in two areas and that there was a second development in central Asia.

Luxation/Dislocation : It refers to the displacement of opposing articular surfaces of bone. The direction of displacement is described with reference to the distal bone in relation to the proximal bone.

Subluxation : It refers to partial or incomplete dislocation.

Classification
    1.    Acute : Recent occurrence of luxation.
    2.    Chronic : Luxation existing for a long time.
    3.    Recurrent : Reluxation after correction.
    4.    Simple : No open wound is communicating with the joint.
    5.    Compound : Open wound is communicating with the joint.
    6.    Pathological : Dislocation due to any pathological lesion.

The word LYCOPODIUM is derived from LUCOS meaning wolf and PES meaning the foot, as the shoots has an appearance of the wolfs foot. CLAVATUM derived from Latin word CLAVATUS meaning club-like.

This drug is inert until the spores are crushed. Its wonderful medicinal properties are only disclosed by trituration and succussion. In nearly all cases where Lycopodium is the remedy, some evidence of urinary or digestive disturbance will be found. Lycopodium is adapted more especially to ailments gradually developing functional powers, where the function of the liver is seriously disturbed. Atony. Malnutrition. Mild temperaments of lymphatic constitution, with catarrhal tendencies; older persons, where the skin shows yellowish spots, earthy complexion, uric acid diathesis, etc.; also precocious, weak children. Symptoms characteristically run from right to left, act especially on right side of body, and are worse from 4 to 8 PM.

Lycopodium is most useful in troubles relating to digestion. These troubles arise from the consumption of food, which ferments in the digestive system. That is why Lycopodium relieves a bloated and full abdomen wherein the wind is pressing downwards.

Lymph vessels arise from mesoderm by vasculogenesis and angiogenesis in common with the arteries and veins. Initially six primary lymph sacs develop in the late embryonic period. They are paired jugular sacs lateral to the internal jugular veins, a single retroperitoneal sac developing close to the root of the mesentry, the cisterna chyli dorsal to the retroperitoneal sac and a pair of iliac sacs at the junction of the iliac veins.

Lymphatic vessels draining the head, neck and fore limbs arise from jugular sacs. Drainage of lymph from the pelvic region and hind limbs is through the iliac sacs, while the retroperitoneal sac and cisterna chyli drain the viscera. At a later stage of lymphatic development, the lymph sacs become interconnected by a series of lymphatic vessels.The plexus between the jugular sacs and the cisterna chyli gives rise to the thoracic duct which opens into the jugular veins.

lymphatic organs : The lymphatic organs are fully developed and functional before birth. Immunocompetent cells can be detected in most lymphatic organs by the end of the second trimester of gestation.

lymphnodes : The lymphnodes are formed by the partitioning of small lymph vessels or sacs. Therefore, lymphnodes are usually found in related groups or in chains along the course of a lymph vessel. The partitioning is initiated by the ingrowth of mesenchymal processes into the lymph vessel. The mesenchyme forms a network of lymph sinusoids that communicate with the lumen of the lymph vessel. The mesenchyme also forms a reticular fiber frame work that outlines and supports the sinusoidal network. At this time a blood vessel enters the developing lymphnode. The point of entrance establishes the location of the hilus. At the periphery of the node the mesenchyme condenses to form a capsule. The mammalian lymphnodes consists of cortical and medullary regions. The cortical parenchyma contains lymphnodules, while the central medullary region contains anastomosing cords of lymphoid tissue. The structure of the porcine lymphnode differs from other domestic animals in that the lymphnodules are centrally located with the cords at the periphery. The flow of lymph in the porcine lymphnode is in the opposite direction to that in other domestic animals, with lymph entering at the hilus and leaving from the cortex.

The lymphatic system is a part of circulatory system and a vital part of the body’s immune system. It is comprised of lymph vessels, lymph ducts, and lymph nodes that move the lymph from tissues to the blood stream and the organs such as the spleen, thymus and bone marrow that produce the lymphocytes and white blood cells. Lymph is very similar to blood plasma. During circulation through the body, the blood reaches to the capillaries at the interstitial spaces. The plasma of the blood is filtered through the capillary wall. The fresh oxygen along with nutrients, hormones and other necessary fluid matters from this plasma are released in to the interstitial fluid and about 85 per cent of the plasma along with the carbon dioxide and metabolic wastes, return into the circulation through the capillary walls. The remaining 15 per cent of the plasma along with the debris of other waste products and the lymphocytes constitutes the lymph which is returned to the circulation through an accessory route of lymphatic vessels and lymph nodes constituting the lymphatic system.

Lymph Vessels: The lymph vessels start as finger-like blind ending thin walled lymph capillaries in the interstitial connective tissue. These capillaries form a network and drain into the thicker walled collecting lymph vessels, lymph ducts and lymphatic trunks. Finally the larger lymph trunks and ducts empty their content the lymph into the cranial vena cava at the thoracic inlet. The lymph vessels contain numerous valves with one or two leaflets preventing the back flow of lymph through the lymph vessels. During its course in a centripetal direction through the lymph vessel, the lymph of each lymph vessel has to pass through at least one lymph node prior to its entry into the blood circulation. As a result there lies a chain of lymph nodes on the pathway of lymph vessels in the body.

The lymph from the fore limb is collected and carried into the circulation through two main lymph nodes, the prescapular and the axillary lymph nodes. There may be two more lymph nodes in fore limb but those are inconsistent and only occasionally found in ox. These include the accessory axillary lymph node and infraspinous lymph nodes and their afferents are mostly from the thoracic wall.

The lymphatics of the head and neck region is comprised of the lymph nodes and the lymph ducts. The lymph nodes of the head are the parotid, pterygoid, mandibular, the lateral and medial retropharyngeal, and the rostral and caudal hyoid. The lymph nodes in the cervical region are the superficial and accessory superficial, cranial, middle and caudal deep cervical and the costocervical and subrhomboidal lymph nodes. The lymph from these lymph nodes is finally collected and carried to the common jugular vein by the tracheal and right lymphatic ducts.

Lymph nodes of head

Parotid lymph node

The parotid lymph node is large and elongated gland usually single but sometimes two small glands connected closely with each other by a fibrous tissue lying on the upper part of the lateral surface in the caudal half of the masseter muscle. It is ventral to the temporomandibular joint, partly or completely covered by the dorsal part of the parotid salivary gland and is situated lateral to the maxillary vessels and nerve. The afferent lymph vessels are received to this gland (node) from the muscles of head, ocular and auricular muscles, the parotid salivary gland, the gums, lips, appendages of the eye, ear, lacrimal gland, and from the bones of the head such as frontal, malar, nasal, maxilla, incisive, turbinate, mandible etc. The afferent from the parotid lymph node joins the tracheal duct of the corresponding side.

The lymphatics of hind limb is comprised of four lymph nodes namely the deep inguinal, epigastric, coxal and popliteal lymph nodes and the afferents and efferent ducts joining and leaving these lymph nodes.

Deep inguinal lymph node

The deep inguinal lymph node is located in the region of deep femoral artery near the origin of the caudal epigastric and the pudic branches from it. The lymph node receives afferents from the muscles in the prepubic and the thigh regions. The efferent vessel from this lymph node joins and opens in the medial iliac lymph node.

Epigastric lymph node

The epigastric lymph node is inconstant. When present, it is located on the course of the caudal epigastric artery near the pubis on the medial surface of the rectus abdominis muscle. The afferents for this lymph node are received from the abdominal muscles and the peritoneum in the vicinity. The efferent vessel of this lymph node joins the medial iliac lymph node.

The lymph nodes of the abdomen and pelvis are in two major divisions, lymph nodes of the wall of the abdomen and pelvis and those of the viscera of abdomen and pelvis. The lymph from all the lymph nodes is collected by different lymph ducts which carry and pour their contents (lymph) in the cisterna chyli near the hiatus aorticus on the abdominal surface of the diaphragm.

Lymph nodes of the wall of abdomen and pelvis

The lumbar aortic lymph nodes are a chain of small lymph nodes situated along the caudal part of the abdominal aorta. These lymph nodes receive afferents from the peritoneum, sublumbar, spinal and abdominal muscles and the lumbar vertebrae. The efferents from these lymph nodes join each other and form two lumbar trunks which later on unite in a single lumbar lymphatic trunk that opens into the cisterna chyli.

The medial iliac lymph nodes are situated near the origins of the deep circumflex iliac and the internal external iliac arteries. The afferents for these lymph nodes are received from the internal iliac, tuberal, gluteal coxal, lateral iliac, subiliac, superficial inguinal and popliteal lymph nodes. The efferents from these lymph nodes either form a lumbar trunk or join any of the lumbar aortic lymph nodes.

The lymphatics of the thoracic region are comprised of large number of lymph nodes which are arranged in different groups like the aortic, sternal, mediastinal and bronchial. The efferent ducts from these lymph nodes ultimately join the thoracic duct which carries lymph from all over the body except the head neck and fore limb to open in the cranial venacava.

Thoracic aortic and sternal lymph nodes

The lymphatics of the thoracic and sternal region is comprised of thoracic aortic, intercostal, cranial and caudal sternal, and the xiphoid lymph nodes and the thoracic duct which conducts the lymph collected from most of the parts of the body except the head, neck and fore limbs.

The thoracic aortic lymph nodes are located along the dorsolateral border of the aorta, ventral to the sympathetic trunk. The afferents for these lymph nodes are received from the muscles of thoracic wall, diaphragm, pleural and pericardial sacs and the intercostal lymph nodes. The efferents from the thoracic aortic lymph nodes are connected to the thoracic duct either directly or through other lymph nodes of the thoracic cavity.

Macromolecule: A molecule having molecular weight ranging from few thousand to millions.

Macronutrients: The essential elements which are required by plants in comparatively large amounts are called as major elements or macro nutrients. Examples: C, H, O, N, P, K, Ca, S, Mg. In this C, H, O, N, P, K are called primary elements and Ca, S, Mg are called as secondary elements.

Malate shuttle: A mechanism of transferring reducing equivalent of cytosolic NADH in the form of malate across the inner mitochondrial membrane by a specific ketoglutarate malate transporter for oxidation through electron transport chain in little animal tissue like heart muscle.

Malic enzyme: An enzyme that catalyzes the oxidation of malate to pyruvate and carbondioxide.

Magnolia aquilfolium (Pursh.) Nutt. cv. Orange Flame (Magnoliaceae) [NI]. An open suckering erect shrub. Leaves ovate to elliptic, spinytoothed, leaflets dark-green changing in colors during seasons. Flowers are yellow borne in densely clustered racemes in late March to mid April.

Matching: The matching is a technique that is used to form two groups of subjects to set up an experiment–control study to test the effectiveness of a treatment. From a pool of subjects, two subjects with identical predetermined attributes, characteristics or conditions are matched and then randomly placed in either the experimental or control group.

Macaroni: Pasta made from semolina and shaped in the form of slender tubes (Plate 396).

Macaroni wheat: It is tetraploid wheat and is preferred for making macaroni, vermicelli etc.

Macaroon: A small cookie composed chiefly of egg whites, sugar, and ground almonds or coconut (Plate 397).

Mace: An aromatic spice consisting of the dried external fibrous covering of a nutmeg (Plate 398).

Mach number: It is a number representing the ratio of the speed of a body (flow velocity) to the speed of sound (sonic velocity) in a surrounding medium (as air).

Macroglobulin: A highly polymerized globulin of high molecular weight.

Macronutrient: A chemical element (as nitrogen, phosphorus, or potassium) of which relatively large quantities are essential to the growth and health of a plant or a substance (as protein or carbohydrate) essential in large amounts to the growth and health of an animal.

Macaroni: Thick hollow tubes of pasta which are usually short and curved.
Macaroons: Small chewy cakes or cookies made from ground almonds/almond paste or coconut, sugar and egg whites. It is ften baked on rice paper.
Maceration: Softening or breaking up of foods by soaking in a liquid, or the soaking of foods (usually fruits) in a liquid in order to absorb the flavour. Spirits or liqueurs are often used as the macerating liquid.
Machine vision: Inspection systems in which samples are examined using a camera, the image from which is analysed by computer using image processing algorithms. Operations which can be performed include defect detection, dimensions measurement, orientation detection, grading, sorting and counting.
Magnesium (Mg): One of the essential mineral nutrients which is widely distributed in plant and animal foods, good sources including fruits, vegetables and dairy products. Standard Western diets generally contain adequate levels of magnesium, so fortification is largely unnecessary. Absorption of dietary magnesium may be affected by other dietary nutrients such as calcium, phosphate and vitamin D, and also by some clinical conditions, including alcoholism and diabetes. Magnesium is an important bone constituent and intracellular inorganic cation acting as an essential cofactor in many enzymic reactions. Magnesium deficiency can cause calcification of soft tissues, electrolyte imbalances, gastrointestinal symptoms and personality changes. If taken in excess, magnesium toxicity symptoms can include nausea, vomiting, hypotension and neurological changes.

M13 is a single stranded filamentous DNA phage. Vectors have been developed from M13 phase by Joachim Messing (1983), which are suitable for preparation of single stranded DNA required for sequencing by Sanger’s method. These are derivatives of M13 wild type (size 6.407 kb).

Genus   : Macadamia
Species : integrifolia Maiden and Betch
Family : Protaceae 
Chromosome No. : 2n =28

Macadamia nut is known as ‘Australian Nut’ or ‘Queensland Nut’ because of its origin in the rainforests of New South Wales and Queensland. The crop is sensitive to frost hence the site which suits orange and lemon tree cultivation is also good for macadamia. Macadamia through cultivated commercially in Australia it is in Hawaii that maximum improvement and advancement in terms of selection of superior cultivars has taken place and in short time of about 100 years macadamia culture has become a very fruitful entrepreneur. Presently there is huge gap between the macadamia nut demand and supply therefore efforts are being made to introduce macadamia into other tropical and subtropical parts of the world.

INTRODUCTION:

An association of two organisms, one living at the expense of other for food and shelter is called parasitism. Parasite factors associated with recognition and selection of the host and the mechanisms in the host responsible for acceptance or rejection of the invading organism were evaluated. Sensory structures in parasites are able to detect differences between different fish species and this ability to discern between fishes may be based on both chemical and mechanical stimuli on the host surface. Complex glycoproteins, proteins, carbohydrates and simple molecules attract parasites or modify their behaviour. (Kurt Buchmann and T. Lindenstrom, 2002)

Machine learning provides powerful approaches for extracting useful information from complex plant, environmental and agricultural datasets. This chapter examines the principles and applications of machine learning in plant data analysis. It introduces different types of plant data, including phenotypic, genotypic, environmental and image-based information, followed by preprocessing, normalization, feature extraction and feature selection. Supervised learning techniques such as regression, decision trees, random forests and support vector machines are discussed for applications including crop yield prediction and disease detection. Unsupervised learning, clustering, principal component analysis and advanced ensemble and deep learning approaches are also considered, along with model evaluation, data limitations and future developments.

In this chapter of machine learning algorithms we will cover the basic algorithms of machine learning with their implementation using dataset and discuss their pro’s and cons of algorithms for better understanding and how to use them in any project or with any dataset to get an correct result which can useful for research or study.

Key Component

We defined a data set composed of audio, images and binary labels that provided an understanding of how we could train a model from snippets to classifications. This sort of problem is one of many kinds of machine learning problems when we try and predict a specified unknown label given known inputs, provided that a dataset of examples for which labels are known is called supervised learning. Let’s discus what are the major key components we have to get there

Agriculture 4.0, otherwise called “Digital Agricultural Revolution”, addresses a change in outlook in agriculture, utilizing state of the art innovations to improve different parts of cultivating tasks. These innovations include the Internet of Things (IoT), Artificial brainpower (Artificial intelligence), Huge Information, distributed computing, Cloud computing, Decision Support System (DSS), high level detecting innovation, and independent robots. Sensors and mechanical technology assume a urgent part in gathering fundamental field information, which is then sent to a neighborhood or cloud server by means of IoT innovation for capacity, handling, and examination. Large information and Artificial intelligence-based strategies can be utilized to change over this information into significant experiences. To work with client connection and informed independent direction, a DSS outfits clients with the fundamental devices to improve the agricultural framework and embrace proper activities.
AI (ML), a subset of Artificial intelligence, has shown extraordinary potential in upgrading different parts of agriculture 4.0. It very well may be characterized as a PC program or framework that can learn explicit errands without being expressly modified to do so. An interaction includes the utilization of a PC to go with choices in light of various information inputs. For this situation, information means a bunch of models. Marked information is frequently utilized for managed learning undertakings (where the model gains from named models), and unlabeled information may be utilized for solo learning assignments (where the model tracks down examples and designs in the information).
ML for sure advantage from a lot of information to accomplish significant exactness in their errands. With regards to farming, acquiring immense and various information can be at times testing yet crucial for the outcome of ML models. IoT sensors are instrumental in gathering a different scope of farming information as they can be decisively sent across fields to catch pertinent data with respect to, for example, soil conditions, Climate factors, crop wellbeing, and animals’ measurements. The inescapable reception of IoT innovation works with constant and continuous information procurement, empowering

A machine learning model is a program that can find patterns or make decisions from a previously unseen dataset. For example, in natural language processing, machine learning models can parse and correctly recognize the intent behind previously unheard sentences or combinations of words. In image recognition, a machine learning model can be taught to recognize objects - such as cars or dogs. A machine learning model can perform such tasks by having it ‘trained’ with a large dataset. During training, the machine learning algorithm is optimized to find certain patterns or outputs from the dataset, depending on the task. The output of this process - often a computer program with specific rules and data structures - is called a machine learning model. Machine Learning Model is a computational program that learns patterns from data and makes decisions or predictions on new, unseen data. It is created by training a machine learning algorithm on a

1. Machine Learning

Learning denotes changes in a system that enable a system to do the same task more efficiently the next time (Simon, 1983)or Learning is constructing or modifying representations of what is being experienced (Ryszard Michalski et al., 1986). Machine learning is a scientific discipline concerned with the design and development of algorithms that allow computers to evolve behaviors based on empirical data, such as sensor data or databases. A learner can take advantage of examples (data) to capture characteristics of interest of their unknown underlying probability distribution. Data can be seen as examples that illustrate relations between observed variables. Discover new things or structure that is unknown to humanseg. data mining.A major focus of machine learning research is to automatically learn to recognize complex patterns and make intelligent decisions based on data.

As we know there are different branches of artificial Intelligence and machine Learning of one of them which has become a most advance and widely used branch of artificial Intelligence in every field of this generation whether it may be either electronics, civil, mechanics, Bioengineering, medical or agriculture etc., In this chapter we will study about machine learning and its types with the most common algorithms of machine learning which are being mostly used in different scenarios and their implementation using python language has been discussed in the implementation part of this book. Here we will also see where machine learning can be used.

i. Introduction

Machine learning is a subset of Artificial Intelligence and one of the most important part of artificial Intelligence. It is a field of Computer science which is totally differs from traditional computational approaches. In traditional approaches, a set of instruction is explicitly provided to the algorithm to solve any problem. Whereas in Machine Learning is a domain of an AI which uses a statistical analysis and can enables a system to always learn from its data without any external inputs in order to give an essential output. Due to this machine learning makes computers in advance to make model which provide decision based on input data.

Machine Learning involves a lot of algorithms which usually based on their requirements and functionalities to use where and when. To make a machine learning model we always require the data on which model can be made. Machine learning uses the algorithm which continuously learns from the data available as training data. A machine learning model is generated after the training of algorithm from the data. After the training completes, when trained model is provided with other real-life data then you can get an essential outcome. For example, in figure 3.1 Machine learning Model we use a predictive algorithm and make a model by providing it with some data, and later on we can receive prediction’s based on real data as input.

Introduction

A machine shop is a place with machining tools and supplies where hand and power tools are used to make, finish, refurbish, or repair machines and their parts. Machine shops come in helpful for repairing and fabricating a wide range of metal things.

Machining

Machining is the most extensive technological procedure in the manufacturing industry. 

A number of quality management tools are being used in food processing industry. Often selection of such tools are tough as it involves several factors for decision-making. The problem of choice of quality management and tools can be solved by selection on the basis of the objective decision making process rather than on the opinion of the decision makers (Sukkarn and Thawesaengskulthai, 2015).

Introduction

Fertilizers in India, are mostly applied either through broadcasting, foliar application or using seed cum fertilizer drills. With the introduction of micro irrigation systems, the application of fertilizers along with the irrigation water became promising and is gaining momentum. The goal of fertilizer application through irrigation is to maximize the uptake rate of fertilizers in order to minimize the losses.

A Flame Photometer has long been in use for analysis of elements; however, it is now being gradually replaced by Atomic Absorption Spectrophotometer. The reason being, that the former can analyze only a few elements such as sodium (Na), potassium (K), calcium (Ca), barium (Ba) and lithium (Li), whereas the later can be used to analyze almost all the elements known, provided a specific Hollow Cathode Lamp (HC), for a specific element, is available. In addition, Atomic Absorption Spectrophotometer is more precise and accurate in measurement as compared to Flame Photometer.

In this chapter, we shall deal with the operation techniques, working principles and a brief description of each and every component/constituent unit of a Flame Photometer as well as an Atomic Absorption Spectrophotometer.

1.    The term “macroeconomics” has been derived from a Greek word?

(a) MICROS

(b) MIKROS

(c) MAKROS

(d) MACROS

2.    Who coined the term ‘macro economics’?

(a) A. Smith

(b) Samuelson

(c) A. Marshall

(d) Ragner Frish

Algae are organisms that grow in an aquatic environment and use light and carbon dioxide (CO2) to produce biomass. There are two categories of algae: macroalgae and microalgae. Macroalgae, measured in inches, are large multicellular algae that often grow in ponds. Macroalgae refers to thousands of macroscopic and multicellular seaweed species. The term includes some species of macroalgae such as Rhodophyta (red), Phaeophyta (brown), and Chlorophyta (green). Algae species such as kelp provide important breeding habitats for fisheries and other marine species, thereby protecting food sources; Other species such as plankton algae play an essential role in carbon sequestration and produce up to 90% of the Earth’s oxygen. Macroalgae, or large seaweeds, grow very rapidly and can reach extraordinary lengths up to 60 meters (McHugh, 2003). Their growth rates are much higher compared to many land plants. For example, wild brown algae can yield between 3.3 and 11.3 kg of dry biomass per square meter each year, and cultivated varieties can produce up to 13.1 kg in just seven months. In contrast, sugarcane, which is known for its high productivity, typically produces 6.1 to 9.5 kg of fresh biomass per square meter per year (Kraan. 2010). Additionally, macroalgae are available naturally in water bodies on a seasonal basis, and farming them in the ocean does not require traditional farming land or fertilizers. This makes them a promising option for addressing energy needs, as they are not only used for food and hydrocolloid extraction but also have potential for ethanol production. Humans have a long history of growing algae for uses such as food, food additives, feed, textiles and papers, bio-plastics. In recent years, seaweed farming has become a worldwide agricultural practice, providing food and feedstock for various chemical uses such as carrageenan, animal feed, biofertilizers and growth promoters. Due to its importance in marine ecology and carbon uptake, recent attention has focused on kelp farming as a potential climate change mitigation strategy for carbon dioxide biocapture, along with other benefits, such as reduced nutrient loads and increased habitat for coastal aquatic species, and reduced local ocean acidification in addition to biofuel opportunities. The seven most commonly cultivated algal taxa are Eucheuma spp., Kappaphycus alvarezii, Gracilaria spp., Saccharina japonica, Undaria pinnatifida, Pyropia spp. and Sargassum fusiform. Eucheuma and K. alvarezii are cultivated for carrageenan (a gelling agent); Gracilaria is grown for agar; while the rest is grown for food. Macroalgae production has become a cornerstone of global aquaculture, serving diverse industries such as food, biofuels, and pharmaceuticals

Macroeconomic policy : Top-down policy by government and central banks, usually intended to maximise growth while keeping down inflation and unempoyment. The main instruments of macroeconomic policy are changes in the rate of interest and money supply, known as monetary policy, and changes in taxation and public spending, known as fiscal policy. The fact that unemployment and inflation often rise sharply, and that growth often slows or gdp falls, may be evidence of poorly executed macroeconomic policy. However, business cycles may simply be an unavoidable fact of economic life that macroeconomic policy, however well conducted, can never be sure of conquering.

Macroeconomics : The big picture analysing economy-wide phenomena such as growth, inflation and unemployment. Contrast with microeconomics, the study of the behaviour of individual markets, workers, households and firms. Although economists generally separate themselves into distinct macro and micro camps, macroeconomic phenomena are the product of all the microeconomic activity in an economy. The precise relationship between macro and micro is not particularly well understood, which has often made it difficult for a government to deliver well-run macroeconomic policy.

Managed Care : Managed care is a livestock health care plan that integrates the financing and delivery of livestock health care services by using arrangements with selected health care providers to provide services for covered individuals. Plans are generally financed using capitation fees. There are significant financial incentives for members of the plan to use the health care providers associated with the plan. The plan includes formal programs for quality assurance and utilization review.

Cells Contain 4 Major Types of Giant Molecules (Macromolecules, Polymers)

Carbohydrates

Lipids

Proteins

Nucleic Acids

BIOLOGICAL POLYMERS ARE MADE FROM ABOUT 60 SMALL BUILDING BLOCKS

Cells contain thousands of types of giant molecules (macromolecules, polymers)

Polymers are macromolecules made from a single building block molecule Most of the macromolecules are made from about 60 types of small building block molecules

Most macromolecules are linear: building blocks linked head to tail- a few have branches (some polysaccharides)

This is what you would get if you heated cells in hydrochloric acid overnight at 110 degrees C:

Macromutations were observed in the present set of experiments, under all the treatments (Table 12-14).

As the dosage of gamma rays increased, there was a decrease in their frequency. EB showed less mutation frequency than gamma rays and EMS. But in combination with gamma rays it produced more frequency of macromutations. As the dose increased the frequency also increased. EMS as single treatment produced macromutations like that of gamma rays, but in combination with gamma rays it produced more frequency than gamma rays as individual treatment. However, as the dosage increased the mutation frequency was also reduced. Medium dose combination produced more mutations than higher and lower dose combinations of gamma rays + EMS.

On M₂ plant basis, gamma rays in combination with EB produced the maximum viable mutation rate (4.04), whereas gamma rays individually induced a maximum rate of 2.23 and EB as a sole mutagen generated a maximum rate of 0.79. But EMS as a single treatment showed 1.69 as viable mutation rate, in combination with gamma rays it generated as much as 2.49. Combination treatment showed a less than synergistic effect.

Nitrogen Content in Indian Soil Because of tropical and subtropical climates Indian soils have very low nitrogen content and in the majority of cultivated soil it varies from 0.02% to 0.13%. Low levels of N in Indian soil is primarily attributed to climate and secondarily to cropping. Climate plays the dominant role in determining the nitrogen content in soil through the effect of soil organic matter content. Generally heavy textured soils have higher N content than loamy or sandy soils. Other factors remaining the same, total N content in soil decreases with the increase in annual temperature at a given humidity level, on the other hand, it increases with increasing humidity level at a given annual temperature. Maximum N content in soil occurs in the surface layer of soils and decreases with depth in soil profile. The variation of distribution of N content in soil with depth is attributed by varying accumulation of organic matter in soil profile.

The macroscopic characteristics of wood give the clues to the conditions under which the wood is grown, provide an indication of physical properties and serve as an aid in wood identification.

Growth rings do not always appear as distinct alternating bands of earlywood and latewood. Some hardwoods, for example, form large-diameter pores early in a growing season and much smaller pores later in the year; such woods are called ring-porous. Discontinuous rings are occasionally found in trees having one-sided crowns and in heavily defoliated, suppressed, and over mature trees. Examination of a stem cross-section often reveals a dark-colored center portion surrounded by a lighter-colored outer zone. The dark center area is known as heartwood and the lighter tissue as sapwood. Trees in which fibers are spirally arranged about the stem axis are said to have spiral grain.

Wood can often be identified by macroscopic characteristics, particularly by colour, gloss, odour, weight and structure. Wood have two types of features:

A) Macroscopic or Gross feature

B) Minute structure feature