eChapters

Introduction

With India’s population to catapult to a gigantic figure of 1.63 billion by 2050, it rests upon the shoulders of the country’s dwindling land resources to cater to the food demand to the surging human race with an eco-friendly manner. This requires a mammoth effort from the food producing machinery of the country-an effort which has to be inclusive of the technological innovation and extension in this field and to the fullest possible extent. Coping with the short-run challenges to food security posed by food price volatility is indeed a daunting task. But the serious concern is the long-term challenges of avoiding a perpetual food crisis under conditions of global warming. The decline of contributions of Indian Agriculture to the National GDP and an apparent stagnation of the growth rate in agriculture, non remunerative agricultural system, ever increasing population pressure, shrinking land resources, global warming and climate change, indiscriminate use of agricultural inputs, over exploitation of natural resource base and environmental quality have made the situation more vulnerable towards food security. In this backdrop, agricultural knowledge and technology accumulation, transfer, application, and diffusion are key to sustainable development and food security in an eco-friendly manner. The knowledge and technology revolution is critically different from the past industrial revolution in that it is based upon a shift of wealth creating assets from physical things to intangible resources based on knowledge and technologies. Thus, effective management and transfer of knowledge and technologies are believed to be the most critical capability of individuals, organizations, and nations in the globalized 21st knowledge society. Extension could play a pivotal role in fostering sustainability through its educational programs but there has been a growing realization that traditional extension models have not been sufficiently effective in promoting socialization of sustainable agricultural practices. Since sustainable agriculture is a knowledge-intensive system, it requires a new kind of knowledge, which differs from other forms on the basis of conventional agricultural practices. In fact, conventional extension system cannot accomplish sustainability in agriculture; because today’s agricultural extension must consider environmental implications, social issues, and overall economic growth within the agriculture sector. In such a situation, the present conceptual discussion shall be envisaging the dictum and destiny of evolving extension approaches by cherishing a clear focus on extension management perspectives towards sustainable development and environment protection and management so as to the well established extension approaches can be restructured and applied in the niche of extension management towards sustainability.

India is the largest producer of pulses in the world with 24% share in the global production. During 201011, the total production was 18.09 million tonnes from an area of 25.6 million hectare (Table 1). The important pulse crops grown in India are chickpea (48%), pigeonpea (15%), mungbean (7%), urdbean (7%), lentil (5%) and fieldpea (5%). The major pulse producing states are Madhya Pradesh, Maharashtra, Rajasthan, Uttar Pradesh, Karnataka and Andhra Pradesh, which together account for about 80% of the total production. The pulses production does not keep pace with the domestic requirement and consequently, the nation has to import 23 million tonnes and the per capita availability of pulses has declined progressively from 41.6 g in 1990 to 37 g in 2008 (Indian Council of Medical Research recommends 65 gm/day/capita). Thus, increasing production from the current level poses a serious challenge for the nation.

Even with the best of efforts, pulses production and productivity has more or less remained stagnant. Due to the low productivitylow input nature, pulses are grown as residual/alternative crops on marginal lands after taking care of food/income needs from high productivityhigh input crops like rice and wheat by most farmers. Also, they grow as rainfed crops with little or no modern yield enhancing inputs. The low priority accorded to pulse crops may be related to their relatively low status in the cropping system. As a crop of secondary importance, in many of these systems, pulse crops do not attract much of the farmer’s crop management attention. In deficient soils, the application of micronutrients has also been found to be remunerative, yet the farmers hardly use these inputs. Seeds of newly developed varieties are not available to the farmers in the required quantities. As a result the seed replacement rate is hardly about 2 to 5%. In addition to this, these crops are adversely affected by a number of biotic and abiotic stresses, which are responsible for reduced yield. Lack of onfarm storage facilities and the vulnerability of pulses to store grain pests also results in considerable losses. Stray cattle and blue bulls are responsible for a lot of damage to the pulse crops especially during offseason, thus affecting adversely the cultivation of crops like mungbean, urdbean, pigeonpea, fieldpea and lentil in Bihar, Uttar Pradesh, Madhya Pradesh, Rajasthan and Haryana also resulting in instability and low yields.

1.1 Learning Objectives
After going through this chapter, you will be able to:
i) Understand the meaning, scope, functions, and limitations of statistics;
ii) Know the various types of statistics and their importance;
iii) Comprehend the various types of variables;
iv) Appreciate the role of the various statistical organizations.

1.2 Introduction

Statistics is a powerful and essential field of study with substantial importance in various aspects of life, science, business, and society. Its significance lies in its ability to provide a systematic framework for collecting, analyzing, interpreting, and presenting data. Statistics is a universal language of data that empowers individuals, organizations, and societies to make informed decisions, solve problems, and gain deeper insights into the world around us.

Temperature is the physical property of an object that quantitatively expresses the hotness or coldness. Objects of low temperature are cold, while various degrees of higher temperatures are referred to as warm or hot. When a heat transfer path between them is open, heat spontaneously flows from bodies of a higher temperature to bodies of lower temperature. If no net heat flow occurs between two objects, the objects have the same temperature which are then said to be in ‘thermal equilibrium’. Temperature plays an important role in all fields of natural and applied sciences. Most of the weather parameters are dependent on it, directly or indirectly. It has important role to play in the development and growth of all living organisms in all stages of their growth.

Atmosphere receives the heat energy from the sun and its temperature increases. Due to different amount of heat energy receipt at different places, the air temperatures at different places also vary. The variation in air temperature basically results into air motion, so as to equalise the energy content of the different regions of the earth. Thus, atmospheric temperature is one of the basic elements of weather and climate.

Introduction

COVID-19, a worldwide pandemic, addresses a deflationary stun for the worldwide economy. The outbreak of coronavirus has had a significant impact on public health worldwide and all stages of various industries’ supply chain and value chain. The 2019 novel coronavirus (2019-nCoV) or the severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) is rapidly spreading from its origin in Wuhan City of Hubei Province of China to the rest of the world. The infection began in bats and was communicated to people by inhalation or contact with infected droplets, and its infection time frame goes from 2 to 14 days. Primary manifestations in hospitalized patients with COVID-19 include fever (98%), cough/hack (76%), and myalgia or weakness (44%). Severe complications include acute respiratory distress syndrome (ARDS), RNAemia, acute cardiac injury, and multiple organ failure. However, exaggerated immune responses may lead to Cytokine Storm. Cytokine storm syndrome includes ARDS, shock, and multi-organ failure (Zheng et al., 2020). Many people are asymptomatic also, and the severity of this disease varies from person to person. The fatality rate is estimated to range from 2 to 3%. Typical/low white cell checks can analyze it with raised C-responsive protein (CRP), periodic modernized tomographic chest examination. The infection spreads quicker than its two predecessors, the SARS-CoV and Middle East respiratory disorder Covid (MERS-CoV); however, it has lower casualty. The worldwide effect of this new scourge is yet questionable (Singhal, T. (2020).

Integrated nutrient management is considered to be the key for achieving higher yield of crops and cropping systems. In general, the productivity of pulse crops has remained low mainly for two reasons: cultivation on agriculturally marginal soils and little if any crop inputs. Among production inputs, fertilizer plays a key role in pulses too like other crops for enhancing productivity levels. Most of the pulses fix atmospheric N, which is the predominant mechanism to meet their N requirement. It can enrich soil fertility by fixing nitrogen. It has been estimated that chickpea can fix (convert atmospheric nitrogen to organic nitrogen which would be available for subsequent crops)up to 140 kg nitrogen per hectare in a growing season, although measured values are usually in the range of about 20-60 kg nitrogen per hectare (Reddy 2004). It has been well established that long duration pigeonpea in northern India can fix nitrogen in the order of 200 kg/ha when grown over a 40 week period. Pigeonpea can also have substantial residual effects on subsequent crops. For example, medium-duration pigeonpea grown at the International Crop Research Institute for Semi-Arid Tropics (ICRISAT) (Asia Centre) could benefit a subsequent maize crop to an extent equivalent to 40 kg nitrogen per hectare. However, this capability is jeopardized through insufficient supply of other plant nutrients. General recommendations for phosphorus (P) fertilization are made in most states. However, K application is generally neglected, resulting in imbalanced nutrient supply and lower crop yields. Under intensive cropping systems, large amounts of K are removed, leading to serious depletion of soil K reserves. Pulses such as chickpea and pigeonpea remove about 60 and 52 kg K₂O/t of grain, respectively. Information compiled from various sources on integrated nutrient management in pulse/pulse based cropping systems in different agroecological regions of the country suggest that there is a wide scope for practicing integrated plant nutrient (IPN) practices in pulses and pulse based cropping systems. Practicing of INM not only economize inorganic fertilizer use but also helps in balanced fertilization and improving soil health and productivity through complimentaryeffects of fixed N by pulses and applied phosphorus and potassium.

Protected cultivation, encompassing systems like greenhouses, polyhouses, and shade nets, has revolutionized modern agriculture by creating controlled environments that shield crops from adverse climatic conditions. This method not only extends the growing period but also enhances the quantity and quality of yields.
A key element of success in protected cultivation is the efficient management of water and nutrients, made possible through advanced irrigation and fertigation techniques.
IRRIGATION IN PROTECTED CULTIVATION
Irrigation is essential for delivering adequate moisture to crops, which is crucial for their healthy development. In protected cultivation settings—where rainfall is either insufficient or unpredictable—reliable irrigation systems become even more important. Traditional methods like surface or furrow irrigation are less effective, often leading to water loss and irregular distribution. In contrast, modern systems such as drip and micro-sprinkler irrigation provide precise delivery of water directly to the plant’s root zone, significantly reducing evaporation and runoff. Among these, drip irrigation has become particularly popular due to its high efficiency. By applying water directly at the soil surface near the roots, it minimizes wastage and ensures consistent moisture levels. This technique not only saves water but also supports healthy root growth and reduces the incidence of soil-borne diseases. Research shows that drip irrigation can decrease water consumption by 30–70% while improving crop productivity by 20–90% compared to conventional irrigation methods.

10.1 Introduction

• In case of integrated nutrient management, all types of nutrients are supplied in the form of organic or inorganic manures and fertilizers to maintain uniform soil fertility.
• Continuous use of fertilizers spoils the soil structure and soil becomes unproductive in due course.
• Fertilizers applied along with sufficient quantities of organic manures will improve the efficiency of the fertilizers. Green manuring should be done every year or once in two years during the rainy season.
• Suitable bio-fertilizers should also be applied from time to time.
• Plants need adequate supply of sixteen essential nutrients for their normal growth and production, out of which carbon (C), hydrogen (H), oxygen (O), nitrogen (N), phosphorus (P), potassium (K), calcium (Ca), magnesium (Mg) are needed in larger quantities and are referred as macro-nutrients, whereas, zinc (Zn), copper (Cu), iron (Fe), manganese (Mn), boron (B), molybdenum (Mo) and chlorine (Cl) are required in smaller quantities and thus called as micro-nutrients.
• An essential element is distinguished from a non-essential one on the basis of following criteria:
  1. The plant is unable to grow normally and complete its life cycle in the absence of the element.
  2. The function of the element is specific and cannot be replaced by any other element.
  3. The element plays a direct role in the metabolism of the plant.

Introduction

The natural hazards like floods, cyclones, droughts, landslides and earthquakes are not rare or unusual phenomenon. India is among the world’s most disaster prone areas and a large part of the country is exposed to such natural hazards, which often turn into disasters causing significant disruption of socio-economic life of communities leading to loss of life and property. It would not be considered as a disaster unless it resulted in actual damage to human life or property. According to data accumulated over past 25 years, natural disasters in Asia accounts for about 40% of the world’s total disasters while the death toll ratio is about 50% and the number of people affected is about 90%. The latter figure is about 2.2 times the ratio of number of occurrences in Asia. The figures vary widely over the decades, a result that can be attributed to a few particularly terrible disasters. Such as the 1976 Tangshan Earthquake in China, which killed about 250,000, and a series of severe cyclones that hit Bangladesh in 1970 with a death toll of about 500,000. The death toll resulting from wind and flood disasters jumped by an order of magnitude in the 1990s. But this sudden increase affected Asia’s ratio to the world total by about 15 percentage points because there was a worldwide surge in this type of disaster. Clearly, there is an extreme concentration of victims of such disasters in Asia, Another substantial increase is clear in the value of damage caused by typhoons and cyclones; it is now running at 10 times the level of the 1980s. Again, however, the ratio has remained almost unchanged, at about 40%, because hurricanes in Central and North America account for more than 50% of the world total (51.2%, 58.5%, and 54.4% in the 1970s, 1980s, and 1990s,respectively). It is sadly worth noting that there has been conspicuous growth in the absolute value of damage in both Asia and the Americas.

Introduction

The Rispana river is a order of stream forming a tributary of Ganga. Its watershed covers an area of approximately 53.6 Km in the northern part of Dehradun city lies between 78^º30’ to 78^º15⁰’ longitude and 30^º15’ to 30^º 30’ latitude in top sheet No is 1/3. The area is covered in IRS - IC Pan of 13 Jan 1998 and LISS-III of 7 March 1997.

The Doon Valley is enriched with numerous seasonal and perennial streams. Which forms the lifetime or the inhabitants . The Rispana river is the part of the Ganga system of Drainage of the valley. The river originates from the Mussoorie hills, which are full of natural springs. The droplets from the springs collect and form numerous streamlets and these streamlets are joined to be these and they form the famous Shekhar Falls (north of Shahanshai Ashram about 5 Km away). Then the Rispana flows along Rajpur road over the Doon Gravels and then river passes through the tiny hamlets Nalapani, Raipur, Chanderroad, Defence colony, Amwala, Tapowan, Dandadhoran Adohiwala, Dalanwala, Gujram, Ajabpur and finally its contribute the water to the suswa River which intern joins the Ganga.

Plant physiological processes determine growth, development, productivity and adaptation to changing environmental conditions. This chapter examines how artificial intelligence can improve understanding of plant physiology and stress responses. It considers physiological processes including photosynthesis, transpiration, nutrient dynamics and hormonal regulation and explores how AI can analyze complex biological, environmental and phenotypic datasets. Machine learning, deep learning, computer vision and predictive analytics support interpretation of information obtained through sensors, imaging, remote sensing and omics technologies. The chapter emphasizes early detection and prediction of stresses such as drought, salinity, temperature extremes, nutrient imbalance and pathogen pressure. It also discusses explainable AI, digital twins and federated learning as emerging approaches for plant stress research.

An orchard is the place where different kinds of fruit crops are grown in large scale. An orchard is a long-term investment and needs lot of planning and expertise. The orchard crops are generally trees, which ultimately have a large spread, so when they are planted, the distance between plants and rows is kept keeping in mind the final spread of the tree. So, before the trees attain their full growth, some suitable crops which are of short duration, like vegetables, flowers, spices and herbs are grown as intercrops.

Fruit trees are perennial, may be tropical, sub tropical and temperate types and thus require proper environmental conditions and suitable management practices for their successful growth.

Food processing techniques range from traditional household practices to sophisticated industrial operations designed to improve safety, quality, nutritional value and shelf life. This chapter presents traditional methods such as blanching, fermentation, soaking, germination and malting, highlighting their effects on nutrient bioavailability and food characteristics. It then introduces industrial processing and distinguishes between thermal and non-thermal technologies. Thermal methods such as pasteurization and dehydration are discussed alongside innovative approaches including pulsed electric fields, high-pressure processing and irradiation. The chapter emphasizes the principles, applications, benefits and limitations of these techniques and demonstrates how processing conditions influence microbial safety, nutritional quality and sensory attributes.

14.1 Introduction

Indoor air pollution causes significant health problems for the two billion people worldwide who rely on biomass fuels for their cooking and heating needs. Over the last 30 years awareness of the environmental and social costs of using traditional fuels and stoves has grown. At the same time, studies of the problem have resulted in proven strategies to reduce both fuel use and harmful emissions. Unfortunately, the local stoves currently available do not always represent the best designs that modern engineering can offer. Although open fires are often used wastefully, carefully operated open fires can be fuel efficient and clean burning when tested in the lab. In many situations, cooks are not overly concerned with fuel use, and studies have shown that when fuel is plentiful three-stone fires can use an excessive amount of wood to cook a small amount of food. But in other places where fuel is scarce, open fires can be carefully controlled so that fuel efficiency rivals many first generation improved cook stoves.

Modern cook stoves are designed to clean up combustion first. Then the hot gases can be forced to contact the pot and increasing efficiency without increasing harmful emissions. Fires can be clean burning when expert cooks push the sticks of wood into the fire as they burn, metering the fuel. The open fire can be a hot fire useful when food or drink needs to be prepared quickly. The energy goes into the pot, not into the cold body of a stove. The open fire can burn wood without making a lot of smoke; hot fires burn smoke as it is released from the wood (Fig.14.1). Unfortunately however, many fires used for cooking are built emphasizing simplicity of use and are wasteful and polluting. Modern stoves score higher when tested than even the most carefully operated fire in the laboratory.

Introduction

Man’s intervention in the evolution of plants, to adapt them to suit his needs, constitutes the practice of plant breeding. Historically regarded as an art and still too empirical to be accepted universally as a science, it has recently been described as a technology (Riley 1978). Whether art, science or technology, it certainly draws on a wide range of disciplines and embodies all those principles of organisation and management that determine success in any production-oriented programme.

Perhaps the biggest contribution that the plant breeder has made to increased production during the past 50 years has been in helping to alleviate the effects of natural hazards such as lodging, pests and diseases on crop production. While most of this progress has been through the manipulation of biotic stresses, much is still to be achieved under non-biotic stresses such as drought, salinity, temperature, etc. This argument is strengthened by the fact that in spite of the spectacular achievements made possible by the ‘Green Revolution’, the productivity level of most crop plants, including wheat and rice, has remained both low and static under stress conditions. Concerted efforts are needed through an approach of interdisciplinary research, since not much has been done to define criteria for stress assessment and evolving breeding approaches for incorporating stress tolerance in crop plants.

A forest is a large area dominated by trees. Many definitions of forest are used throughout the world, incorporating factors such as tree density, tree height, land use, legal standing and ecological function. Although a forest is usually defined by the presence of trees, under many definitions an area completely lacking trees may still be considered a forest if it grew trees in the past, will grow trees in the future, or was legally designated as a forest regardless of vegetation type. According to the Food and Agriculture Organization, forests covered 4 billion hectares or approximately 30% of the world’s land area in 2006. Forests are the dominant terrestrial ecosystem of earth, and are distributed around the globe. Forests account for 75% of the gross primary production of the earth’s biosphere, and contain 80% of the earth’s plant biomass.

DEVELOPMENT OF MODERN FORESTRY

Systematic management of forests for a sustainable yield of timber began in Portugal in the 13th century when Afonso III, the king of Portugal planted the trees to prevent coastal erosion and soil degradation, and as a sustainable source for timber used in naval construction. His successor Dom Dinis continued the practice and the forest exists still today. Forest management also started in German in the 14th century and in Japan in the 16th century. The practice of establishing tree plantations in the British Isles was promoted by John Evelyn during second half of the 17th century.

During the late 19th and early 20th centuries, forest preservation programmes were established in British India, the United States, and Europe. Sir Dietrich Brandis is considered the father of tropical forestry. He brought European concepts and practices to the tropical and semi arid climate zones. The enactment and evolution of forest laws and binding regulations occurred in most Western nations in the 20th century in response to growing conservation concerns. Tropical forestry is a separate branch of forestry which deals mainly with equatorial forests that yield woods such as teak and mahogany. One of the applications of modern forestry is reforestation, in which trees are planted and tended in a given area.

Global onion research connects crop domestication, genetic diversity, nutrition, therapeutics, production, breeding and post-harvest technology. Onion contains organosulphur compounds, quercetin derivatives and other phytochemicals associated with antimicrobial, antioxidant, cardioprotective and anticancer effects. Despite high global production, productivity differs substantially among countries, and storage losses remain a major economic concern. This chapter reviews global production trends, germplasm resources, breeding strategies, phytochemistry, therapeutic potential and emerging storage technologies. Landraces, cultivars and wild relatives provide valuable traits for yield, storability and stress resilience. Advanced treatments such as ozonation, cold plasma and irradiation demonstrate promise, although wider commercial adoption, economic validation and regulatory development remain necessary.

Edaphology is the study of soil properties in relation to plant higher production.

Pedology refers to study of origin of soils in their natural environment, classification and description.

pH is the negative logarithm of the concentration of H+ ions in soil solution.

Soil profile is a vertical exposure of horizon sequence.

Soil texture is not changed by cultural management.

Cation exchange capacity (CEC) is defined as sum total of exchangeable cations that a soil can absorb.

5.1 INTRODUCTION

The importance of the best quality planting material as an initial investment is a well-realized factor for persons engaged in horticulture field. So, nurseries have great demand for the production of plants, bulbs, rhizomes, suckers and grafts. But in general, good quality and assured planting material at reasonable price is not available many a times. Nursery is the basic need of horticulture. Plant propagation techniques and practices is the core of horticulture nurseries. The planting materials for horticultural plantations are raised from seeds and vegetative parts. The difficulty of procuring tree seeds and their rising cost makes it necessary to find means to increase seedling survival and growth.

Raising a nursery needs a great skill. Nursery business has become an agro- business for the unemployed youths. Generally, various commercial crop growers require a good quality saplings or grafts of genuine type. So, nursery raising is quite a remunerative enterprise.

Nursery is a special place where seeds are sown, plants are propagated, grown, nurtured to usable size for planting or for sale. Nurseries provide the necessary control of moisture, light, soil and predators and allow production of healthy and hardy seedlings.