eChapters

In natural beekeeping systems, the management of pests and diseases focuses on prevention, ecological harmony, and chemical-free practices that safeguard both bee health and environmental integrity. Departing from conventional methods that often depend on synthetic antibiotics, fumigants, or miticides, natural approaches aim to fortify the colony’s inherent resilience through biological and culturally grounded techniques. Central to this strategy is the maintenance of strong, genetically robust colonies, ensuring clean and well-aerated hives, and providing nutritional support through diverse and abundant floral sources. Healthy, wellnourished colonies are inherently more capable of withstanding infections and parasitic invasions.

Indian apiaries commonly contend with pests such as wax moths, ants, wasps, small hive beetles, and mites like Varroa destructor and Tropilaelap sclareae. Diseases including American foulbrood, European foulbrood, chalkbrood, and Nosema can pose significant threats if not identified and contained promptly. Natural management emphasizes routine hive inspections to detect early symptoms, followed by the removal and safe disposal of infected combs. Maintaining adequate space between colonies can minimize disease transmission, while structural modifications to hive entrances and the use of barriers like ash rings or water moats effectively deter ants and other intruders.

Introduction

Increased food production is required to ensure food security in the face of the rising world population. The strategy will include cropping of the rising world population. The strategy will include cropping of the new geographical areas and increase in the per hectare crop yields, through better crop management; losses of the food in storage will have to be minimized.

The food grains and their products are susceptible to deterioration by a variety of biotic and abiotic factors. These include the high temperature, moisture, micro-organisms, mites, insects and rodents. Together they account for loss of about 25% of food grains worldwide. The losses are highest in the tropical and sub-tropical areas where conditions are relatively conductive for rapid growth and multiplication of the organisms that cause damage to the food materials, especially insects. Reliable pesticide and storage techniques are required for limiting the damage to food grains in storage in most of the developing countries of the areas.

Introduction

The introduction of high yielding varieties and hybrids in late sixties led to accumulation of insect pest problems in cereals. The varieties and hybrids developed during green revolution era with the sole objective to enhance production to feed increasing population were better in quality parameters than traditional locals but were highly susceptible to insect pests. Over 200 pests attack different cereals and insects that were not known or were of minor importance have now become major pests and several new insect pests have appeared on cereals. Out breaks are frequent due to several obvious reasons. Major pests are serious, perennially occurring and persistent species which cause considerable loss in yields every year in large areas require control measures. Occasional pests attack the crops sporadically but cause potential damage and sufficient loss, though in some localities or only in some seasons, so as to warrant human intervention.

10.1 Introduction

Grain legumes such as chickpea, pigeonpea, cowpea, field pea , lentil, ,  and Phaseolus beans are the principal source of dietary protein among vegetarians, and are an integral part of daily diet in several forms worldwide. They are an important component of cropping systems to maintain soil fertility because of their ability to fix atmospheric nitrogen, extract water and nutrients from the deeper layers of the soil as compared to cereals, and add organic matter into the soil through leaf drop. However, grain legumes are mainly grown under rainfed conditions and the productivity levels are quite low mainly because of severe losses due to insect pests and diseases.  Average grain yield of pulses (0.86 t/ha) is only about one-fourth the average yields of cereals (3.54 t/ha).  Production and productivity of grain legumes is constrained by several biotic and abiotic factors, and suffer an average of 31.9 to 69.6% loss in crop productivity due to insects, diseases, drought, weeds,  and soil fertility. Pod borers (Helicoverpa and Maruca), Fusarium wilts, viral diseases, Ascochyta blight and Botrytis gray mold (Chen et al., 2011).

Introduction

Walnut is the oldest cultivated fruit in the world (Ozkan and Koyuncu, 2005). Juglans regia L., the Persian walnut, is probably native to a wide region extending from the Carpathian Mountains across Turkey, Iraq, Iran, Afghanisan and southern Russia to northern India. Species of walnuts, genus Juglans, are found in the forests of the eastern and southern parts of the USA, in Mexico and Central America, the Andean parts of Southern America from Columbia to Argentina, the West Indies, Japan, China, southern Asia from India to Turkey and southern Europe to the Carpathian Mountains of Poland (McGranahan and Leslie,1990). The trees are large and tall with round headed canopy. The rather smooth, light coloured, large nuts are free of the hull at maturity. Shell thickness varies from paper–thin to very thick and hard. The Greeks probably obtained J. regia from Persia from where, the seeds were transported to Rome, where they were known as Jovis Glans, or Jupiter’s acorn, from which comes Juglans. From Italy, it spreaded to what is now France, Spain, Portugal and southern Germany. Trees of the species were in England by 1562, and were bought to America by the earlier settelers. The American colonists are said to have called the species English walnut to distinguish it from the eastern black walnut, J. nigra. It is generally prefer to call it Persian walnut as it is associated with the place of origin bit commercially, it is called as English walnut. The term Carpathian walnut is sometimes used to refer to cold hardy Persian walnuts (Forde and McGranahan,1996). The other important species are J. ailantifolia Carr. syn. J. sieboldiana Maxim. (Japanese walnut), J. nigra L. (American black walnut), J. cinerea L. (butternut), J. microcarpa Berlander (Texus Black walnut), J. major Heller (Arizona black walnut), J. californica S. Wats (Southern California black walnut) and J. hindsii Jeps. (Northern California black walnut).

Definition

Adjuvants are chemicals incorporated in a pesticide formulation or added to the tank mix, to increase effectiveness and safety. They generally have no effect on pests in themselves.

The Effectiveness of a Pesticide in Controlling a Disease and Pest Depends on

Using the right pesticide for the target disease & pest.

Applying the pesticide at the right time.

Applying the pesticide in the right amount.

Applying the pesticide to the right place.

Pesticide Formulation

Pesticide formulation is the process by which the pesticide is put into a form which can be easily produced, stored, transported and applied by practical methods in order to achieve a safe, convenient economic and effective method of pest control.

When a pesticide active ingredient (a.i) is manufactured, it is not in a usable form as it may not mix well with water or may be unstable. Therefore, it is mixed with other compounds to improve its effectiveness, safety, handling and storage. These other compounds can include solvents, mineral clays, stickers, wetting agents, or other adjuvant. The mixture of a.i. and inert (inactive) ingredients is called a pesticide formulation. Some formulations are premixed while others must be mixed before use. A single a.i. is often made into several formulations.

The label on the pesticide container is the principal source of information about a product. The label has all the fundamental information that is required. If you need information about a pesticide, do not rely on memory as it is very easy to make a mistake. Read the label every time before using a pesticide. The lay-out of the pesticide label varies between countries. However, every label on a pesticide container from a reputable manufacturer or source will have the following information:

The knowledge on the fate of pesticides, after application in the environment is useful to research workers associated with their safe and effective use. It is important to know whether a xenobioticwillpersist orwill be inactivated. Frequently persistence is desirable for sustained control. However, for many cases, rapid detoxificationof the compound may be required to avoid cumulative effects. Most of the pesticides are not very soluble in water andtheir oxidation orhydrolysis (or both)leads to formation of polar groups. Such reactions are called primary metabolic reactions, often, but not always. Theproducts ofthese primary reactions undergo secondary changes whereby they are conjugated with endogenous substances to form molecules that are more readily excreted. In higher animals, these changes facilitate the transportation of metabolites of pesticides in blood, which in turn leads to their eventual excretion.

A pesticide may be referred to by several different names, which can cause confusion. The same pesticide may be referred to by a number of different names, or different pesticides may have similar names.

Crops are grown with the use of plant protection chemicals to boost production, enhance quality, and lengthen shelf life. Wherein the enormous use of pesticides which are having the longer half life period led to leave the residues in the different bodies of the ecosystem. Pesticide residues refer to the residual presence of pesticide active ingredients, their metabolites, or breakdown products in various environmental components subsequent to their application, accidental release, or disposal.

Analysis of residues gives insight on the type and extent of chemical contamination in an area, as well as how long it has been there. Before governments will approve the use of pesticides, they require comprehensive testing of their efficacy, environmental impact, and toxicology. A possible risk to human health arises from the presence of chemical residues and/or breakdown products in agricultural goods. Selective sampling plans can be used to learn more about pesticide traces in the environment, how they move about, and how quickly they degrade.

Pesticide: The act defines “pesticide” as any substance or other substance or product that is used to stop, kill, repel, or control insects, rodents, fungi, weeds, and other plants and animals that humans don’t need.

Pesticides sustain food production and control disease and pests. They are vital for crop production and instrumental in continuous increase in food production. The consumption of pesticide in India is one of the lowest in the world. India uses a low amount of 0.5 kg/hectare pesticide compared to 7.0 kg/ hectare by USA, 2.5 kg/hectare by Europe, 12 kg/hectare by Japan and 6.6 kg/ hectare by Korea. However, despite the low consumption of pesticides, India has more problem of pesticide residues vis-a-vis other countries and these have entered into food products and underground water because of

Pesticide Resistance

Resistance to pesticides may be defined as ‘a heritable change in the sensitivity of a pest population that is reflected in the repeated failure of a product to achieve the expected level of control when used according to the label recommendation for that pest species.

Insecticides possess toxicity towards both pest organisms and human beings. Nevertheless, the potential harm to humans and non-target animal species can be mitigated by implementing appropriate safety measures. The ingestion or prolonged dermal exposure to most insecticide s can result in deleterious effects, whether intentional or accidental. Inhalation of insecticide particles may occur during the spraying process, and there is an associated risk of contamination of drinking water, food, or soil. The issue of safety is consistently a concern when utilizing insecticide s. Exposure to insecticide concentrates or vapour drift has the potential to cause harm to applicators, bystanders, and the surrounding environment. It is imperative to exercise specific precautions when engaging in the activities of transportation, storage, and handling. Individuals who are engaged in the handling and application of insecticide s are required to possess knowledge and adhere to appropriate safety protocols in order to mitigate potential risks. The foundation of ensuring insecticide safety lies in the selection of an appropriate product. The preservation of safety is of utmost significance in the various stages of insecticide management, including storage, transportation, mixing, and loading. The safe execution of equipment cleanup and maintenance is imperative, as it necessitates the proper disposal of unwanted insecticide s and empty insecticide containers. Regular cleaning and maintenance of spray equipment is essential in order to mitigate the occurrence of leaks. Furthermore, individuals who are involved in insecticide application should undergo comprehensive training to ensure their adeptness in handling these substances safely.

Pesticide Toxicity

Chemical tactics to manage pests can include many types of compounds. Some merely repel or confuse pests. Some interfere with weed photosynthesis, insect molting processes or development in some way. Others, including some botanical and most conventional insecticides are broadly toxic to living systems. The term pesticide literally means “pest killer". Generally speaking, when using pesticides, we are trying to garner the advantages of using pesticides while minimizing the risk to humans and other non-target organisms. Risk to humans of pesticide use is often described as:

There are broadly five categories of crop protection products

Insecticides: Insecticides provide protection to the crops from the insects by either killing them or by preventing their attack. They can be further classified based on their mode of action:

The Insecticides Act, 1968 and Insecticides Rules, 1971 regulate the import, registration process, manufacture, sale, transport, distribution and use of pesticides with a view to prevent risk to human beings or animals and for all connected matters, throughout India. However, recently the Union Cabinet gave its approval for the introduction of the Pesticides Management Bill with the aims of improving the quality of pesticides available to Indian farmers and introducing new, safe and efficacious pesticides. This bill will replace the existing Insecticide Act 1968.The pesticides’ regulations in India are governed by two different bodies:

Introduction

Pesticide in broad term refers to “killer of pests” but is an agent used to control, prevent, destroy, repel and mitigate a pest. Pesticides are thus poisonous substances intentionally applied in situations, which harbour so-called pests. Agriculture including poultry and veterinary (i.e. raising of crops and protection of produce and storage), health (public places-hospitals, restaurants, gardens cinema halls etc.), transportation (shipment, air rail and road transport) are some areas where pesticides are used extensively as spot application, fumigation, aerial and field sprays, soil treatments etc. Plant protection comes to be recognized as an equally important factor of agriculture production as improved seeds, fertilizers and irrigation. Pesticides over time get accumulated in the environment and contaminate all systems i.e. air, water, soil, plants, animals and micro-organisms on being transported from one system to another leading to biomagnifications.

The fate of a pesticide in the environment and the entities, which come in contact, is depicted in the Fig. 1 reflecting the pollution and contamination. Pesticides during manufacturing, transportation, storage and actual use enter the biotic and abiotic components of the environment through air, water and soil and disturb the cohesion causing great disaster sometimes. Pollution is defined as undesirable change in physical, chemical and biological characteristics of air, land and water. This change may or will harmfully affect human life or that of desirable species, industrial process, living conditions and cultural assets. It may or will waste or deteriorate our raw material resources. Pollution increases burden of human society causing loss of resources through unnecessary wasteful exploitation, the cost of pollution abatement and deterioration of human health.

The chemicals, which can destroy pests or prevent their occurrence by their chemical action are known as ‘Pesticides’. Pesticides include ‘insecticides’, acaricides’, ‘nematicides’, rodenticides’, molluscicides’ etc., which are used to destroy insect pests, mites, nematodes, rodents, slugs and snails respectively. Pesticides have been used even before the time when man never knew how to read and write. Even before 200 BC, several substances were known to control pests. Sulfur, arsenic poisons, fluorine poisons, as well as some plant extracts and oils were used to control pests. However, these substances could destroy only a few specific pests only to some extent.

Advances in the invention of pesticides

The invention of many of the present day pesticides started only after 1867. ‘Paris green’, a synthetic chemical was the first pesticide used to control the ‘Colorodo beetles’ of potato. Up to 1939, only a few inorganic chemical compounds and plant poisons were used as pesticides. Only after the Second World War much advances were made in chemical research. After the invention of DDT in 1939, a revolution had started in the field of pest control. Following the introduction of DDT, several other pesticides were identified and introduced for pest control. In 1941, BHC was invented by the British and French scientists. During the same period, organophosphorus pesticides were invented by the German scientists and parathion, malathion, demeton etc. were introduced.