eChapters

Weeds are the plants which grow where they are not wanted or simply plants growing out of place. A plant may be desirable in one situation and a weed in another situation. Those plants that interfere with human activity in crop and non-crop areas are considered weeds. Weeds compete with crops for soil nutrients, water and light; they host insects and plant pathogens harmful to crop plants, and their root exudates and/or leaf leachates may be toxic to crop plants. Weeds also hinder crop harvest and increase the costs of such operations. In addition, at harvest, weed seeds often contaminate the crop produce. Thus, the presence of weeds in crop areas reduces the efficiency of inputs such as fertilizer and irrigation water, enhances the density of other pest organisms, and finally severely reduces crop yield and quality (Labrada and Parker 1999).  Weeds are serious menace in crop production.

Food is basic to human being and agriculture is the catalyst between the two which is basically supported by natural resources. The human being is entirely dependant on food and food is fully dependent on agriculture and humanity. Eventhough food, agriculture and humanity have their own entity; they are inseparable for the survival and existence of each other. Hence, the three pillars of food, agriculture and humanity forming a triangle symbolize the roots of human civilization.

I find myself fortunate to have the opportunihj to live and experience the working life of the farmers and the farming in Kansas (USA), Nigeria (Africa), Saudi Arabia and Yemen (Middle East), Italy (Europe) and India, Myanmar and Thailand (Asia). It zvas fiirther strengthened by visits to farmers in another about 100 countries. Day after day and month after month and even years, it made me to realize that community culture, language and farming in each state, country and continent are different from each other but some things are common and that they are all doing farming, they are growing food and they all doing for the livelihood of their families, neighbors and communities near and far (Nath, 2011).

The foundation of agriculture is laid on available natural resources e.g. land, water, sunlight, air, plant, animal and human beings. The human beings, being the leader to manage the resources have contributed to redefine agricultural science and promote and develop technology. This has led to augment agriculture and its science and technology. At the end, the human efforts have brought about changes and improved agriculture production at the cost of excessive use of natural resources, knowing well that without natural resources, without good soil and water hardly anything will survive.

Presently world produces enough to feed the present human population, but it is not available to millions of people. It is not the lack of availability of food but is the unequal distribution and lack of entitlement which are causing hunger and malnutrition in millions of population.

Agriculture is the backbone of rural livelihoods in many developing countries, providing employment, income, and food security for millions of people. However, agricultural productivity and rural livelihoods are increasingly vulnerable to climate-related stresses, such as droughts, floods, and extreme temperatures. The impact of climate variability and change on agricultural systems is a major concern, particularly in rural areas where people have limited capacity to adapt to these changes.
1.1. The Role of Agricultural Meteorology
Agricultural meteorology plays a critical role in supporting sustainable rural livelihoods by providing weather and climate information to farmers, policymakers, and other stakeholders. Operational agricultural meteorology involves the application of weather and climate information to improve agricultural decisionmaking, reduce climate-related risks, and enhance agricultural productivity. By integrating weather and climate information into agricultural decision-making, farmers can make informed decisions about planting, irrigation, pest management, and harvesting, ultimately leading to improved crop yields and reduced losses.
1.2. Objectives and Scope
This book aims to provide a comprehensive overview of the role of operational agricultural meteorology in supporting sustainable rural livelihoods. The book will explore the current state of agricultural meteorology, its applications, and its potential to improve agricultural productivity and reduce climate-related risks. The book will also discuss the challenges and opportunities in implementing operational agricultural meteorology, including the need for capacity building, infrastructure development, and policy support. This book is intended for a wide range of stakeholders, including:
• Agricultural meteorologists and researchers
• Policymakers and decision-makers in agriculture and rural development
• Farmers and agricultural extension agents
• Students and academics in agricultural meteorology and related fields
• Development practitioners and NGOs working in rural development and agriculture.

1.1 Water and its Importance

Water has played a crucial role in sustainace of lives of all living beings including animals, plants and human beings in this earth since time immemorial. It is there since the creation of the nature and will probably remain till the destruction of the nature. It is used in multifarious uses including domestic, industrial, agricultural, recreational and many other uses. It occurs in the nature in practically three forms i.e. solid, liquid and gaseous forms. All the three forms are important to living beings; but the liquid form of water is more beneficial. The weight of the water helps in running hydroelectric turbines, the density of water helps in floating the ships, the steam energy produced by heating the water helps to run the locomotives and thus is beneficial in many ways. It is considered as the most important resource of the society. It has become part and partial in our life so that we cannot live without water. That is why water is called as life.

Aquaculture is practiced in the majority of countries worldwide, however the significance of water quality standards remains largely unknown to farmers and new aqua entrepreneurs. They may achieve maximum fish production with minimal input costs if they are trained and stay up to date on water quality management in the aquatic ecosystem. The water quality categorised into three main of metrics as physical, chemical, and biological parameters. Dissolved oxygen (DO), biochemical oxygen demand (BOD), free carbon dioxide (CO2), pH, temperature, total dissolved solids (TDS), turbidity, ammonia, nitrite, nitrate, alkalinity, bacterial density primary productivity (chl a), plankton population, etc. play a significant role for fish production. However, even small variations in certain physical and chemical parameters—particularly pH, temperature, and dissolved oxygen (DO)—can cause stress in the animals, which may manifest as physiological changes, reduced reproductive capability, and altered behavior. Water parameters such as alkalinity and hardness are relatively stable, whereas others like pH, dissolved oxygen (DO), and temperature fluctuate regularly. Proper maintenance and monitoring of these water quality parameters in aquatic environments support fish health and enhance fish production. On the other hand, variability in dissolved ammonia, nitrites, and nutrients like nitrate significantly affects aquaculture production. It has also been observed that high feeding rates in aquafarms create eutrophic conditions in water bodies, leading to substantial algal blooms. These blooms are responsible for die-offs, and as a result, ammonia levels in the ponds rise rapidly. The environmental factors responsible for generating high ammoniacal concentrations may also lead to increased nitrite concentration in aquafarm. Both ammonia and nitrite are directly toxic or sublethal cultured aqua animals, leading to reduced resistance to diseases. In aquaculture system, ammonia is produced through the ammonification process, which occurs when organic matter is broken down by the microbial community. However, this decomposition also reduces dissolved oxygen levels in the system. Low dissolved oxygen surges the toxicity of ammonia to cultured animals. Ionized ammonia (NH4 +) and hydroxide ions occurs in equilibrium with unionized aqueous ammonia solution. The unionized form of ammonia (NH3) is toxic

1.1 General

Access to energy is a crucial enabling condition for achieving sustainable development. Prudent energy policies and research can play an important role in steering both industrialized and developing countries onto more sustainable energy development paths. Specifically, they can strengthen the three pillars of sustainable development: the economy, by boosting productivity, social welfare, by improving living standards and enhancing safety and security, and the environment, by reducing indoor and outdoor pollution and remediating environmental degradation.

1.2 Energy and it’s Requirement

Energy in any form is necessary to meet many of our requirements. It’s varying definitions shows the importance of energy in our life.

1.1 DEFINITIONS
1. Forest
Forest is the homeland of trees. Because man must protect and maintain the life of the forest and because of this;  certain natural
calamities  and  bad  use  of  the  forest  constitute  severe danger to  the forest  and the  environment at large.  In  other to divert from these difficulties, man was bound to cultivate trees. This is silviculture. Silviculture then became a science and art.

It is difficult to ascertain which came first, food or human being. It is the same situation as chicken and egg where we lack evidence to indicate which came first on earth.

It does not matter which came first but we know for sure that human being needs food and he or she needs everyday and throughout his or her life. In other words, a human being cannot survive without food indicating permanent unbreakable bondage between food and human being. It supports the basics of human civilization-food, agriculture and humanity.

The climate crisis is one of the most pressing issues of our time, with farreaching consequences for global agriculture, ecosystems, economies, and societies as extreme weather events, shifting rainfall patterns, and rising temperatures threaten crop yields and food security. However, the climate crisis is not a new phenomenon. Its roots can be traced back to the Industrial Revolution, when human activities such as8 burning fossil fuels, deforestation, and land-use changes began to release large amounts of greenhouse gases into the atmosphere. In the 1960s and 1970s, scientists began to sound the alarm about the potential consequences of human-induced climate change. The first climate models were developed, and researchers such as Roger Revelle and Charles David Keeling began to track the rising levels of carbon dioxide in the atmosphere. The 1980s saw the establishment of the Intergovernmental Panel on Climate Change (IPCC), which has since become the leading international body for assessing climate change science.
1.1 Climate Crisis
Despite these early warnings, the climate crisis has continued to worsen. The past decade has seen a proliferation of extreme weather events, from heat waves and droughts to floods and storms. The year 2024 was the hottest on record, with global temperatures averaging 1.55°C above pre-industrial levels (Fig. 1.1). The consequences of climate change are already being felt, from melting glaciers and sea-level rise to devastating wildfires and water scarcity.

Meteorology is derived from the Greek word meteoro which means above the earth’s surface; i.e., the atmosphere. The state of the atmosphere experienced at a given time, in any location on the surface of the earth is known as weather. Thus meteorology is the scientific study of the atmosphere or the weather. It is a branch of physics dealing with atmosphere and it is often quoted as the ‘physics of the lower atmosphere’. The main focus of meteorology is to understand the weather processes and forecast the weather. Solar radiation, the air mass and moisture are the three key ingredients that make up weather. The exchange of heat, moisture and momentum between the earth’s surface and the atmosphere determines the characteristic of weather. The observable weather events are known as meteorological phenomena and are defined by a set of variables called weather elements. Atmospheric temperature, atmospheric pressure, humidity, precipitation, cloudiness, wind and visibility, etc. are examples of such weather elements. The weather elements are not separate entities. They are closely related with each other and are highly variable in nature. Meteorology explains and analyses the changes of these weather elements.

Meteorology

The major subdivisions of meteorology are dynamic meteorology (or atmospheric dynamics) and physical meteorology (or atmospheric physics). The dynamic meteorology is concerned with the analysis and interpretation of the three-dimensional, time-varying, macro scale motions and energy transformations in the atmosphere. The science of dynamic meteorology is meant to develop models based on the hydrodynamic and thermodynamic equations. The physical meteorology is concerned with the processes that alter the physical properties and the chemical composition of air parcels as they move through the atmosphere.

The role of plant nutrients in crop production is well established. Estimation of nutrients contents and forms in materials, which are involved in nutrient supply and dynamics is a crucial step in scientific nutrient management and crop production. There are 16 essential plant nutrients. These are carbon (C), hydrogen (H), oxygen (O), nitrogen (N), phosphorus (P), potassium (K), calcium (Ca), magnesium (Mg), iron (Fe), sulphur (S), zinc (Zn), manganese (Mn), copper (Cu), boron (B), molybdenum (Mo) and chlorine (Cl). These nutrients have to be available to the crops in quantities as required for a yield target. Any limiting or deficient nutrient (s) will limit crop growth.

India had fourfold increase in population from 0.3 billion to 1.34 billion and registered a fivefold increase in food grain production from 50 million tons to
285 million tons in 2018 (Paroda, 2020). 

Introduction

Human beings are the most critical components of an organization. The organization’s survival has improved all the facets contributing to its success. In a competitive world, human resources are sine qua non in an organization. Quality of work life (QWL) is critical for deciding organizational employee- related outcomes. Human resource management has a unique role in any organization. Organizational goals in an organization are achieved through planning, organization, staffing, direction, coordination, and control. 

Around the world, nearly one billion people live along the 3,12,000 Km long coastline. The Indian coastline runs around 8,129 Km distributed along nine coastal states, two groups of islands and two union territories. The coastal ecosystem of India forms a very valuable resource community, supporting the livelihood security of several million rural poor and also contributing the national economy in a large measure. The latest estimates by National Bureau of Soil Survey and Land Use Planning (NBSS & LUP), Nagpur, India, using Global Assessment of Soil Degradation (GLASOD) guidelines indicate that the coastal area in the country is spread over an area of 11.8 million hectares (Mishra, 2005). Yadav et al. (1983) have reported about 3.1 M ha and 2.1 lakh ha of coastal salinity in India and Tamilnadu respectively.

The entire world is now facing a crisis situation. The problems encountered to address the crisis are interactive with each other and there is no easy way to find solution. The world’s population is expected to increase by 70 per cent by the end of year 2050 and there is need to step up agricultural production for a hunger free world. Nearly 70 per cent of the fresh water is used in agriculture sector. The demand for water in agriculture sector can be judged by the fact that several thousands of litres of water is required to produce one kilogram of food grains. Whatever maybe the source from which water is drawn for agriculture, all the sources depend upon the precipitation for replenishment on continuous basis. The precipitation patterns are not consistent and are known for greater variability from season to season, year to year and from region to region. These inconsistencies are further increasing due to recent threat of climate change triggered by the atmospheric pollution. The atmospheric pollution due to increase of greenhouse gases in the atmosphere is responsible for rise in temperatures. The rise in temperature induced changes in global pressure and wind systems. The consequence effect of it is changes in rainfall patterns, frequent occurrence of extreme weather events like floods, droughts, heat waves, intensified cyclonic activity. Rise in temperatures is increasing evaporation of water and water requirement of crops as well. There is considerable increase of the chemicals in the agriculture sector in the form of fertilizers, pesticides, fungicides and weedicides how to increase crop production and protection of crops from biotic and abiotic stresses. Consequently, there is increased pollution of water resources which may adversely affect the availability of fresh water, which is essential and critical input in agriculture for increasing agricultural production. It calls for efficient utilization of water resources in agriculture. More concerted efforts are required immediately to:
• Improve water use efficiency in agriculture
• Reduce pollution of water resources
• Conservation of fresh water resources
• Reduce emissions in agriculture sector and
• Prevent dwindling of fresh water resources

The term digital is derived from the word digit or digitus, a Latin word for finger, as fingers are often used for discrete counting. A variable is discrete when it is countable in a finite time and its instantaneous value at any timing/ instant belongs to a set of finite values.

In history, some developments were possible through belief and scientific study with evidence to support their claims. Our ancestors made ways of surviving on earth by varying the raw materials and tools. Science had absolutely no place, and all discoveries were derived through the trial-and-error method. The same was for agriculture, tracing back to our roots, the farming system was highly
dependent on the on-farm inputs. However, with the timeline of evolution, the exponential growth of the population demanded speedy growth in agricultural production giving rise to Green Revolution technologies (GRTs) in the mid- 1960s, which introduced high-yielding varieties of crops that were responsive to higher dosages of chemical fertilizers and irrigation and persuaded farmers to resort to intensive monocropping. Since the onset of GRTs in the mid-1960s, food production in India has risen five to ten-fold (Dasgupta, 1977).
However, while the past few decades have seen substantial ‘green revolution’ advances, I admit, the hazards have kept themselves hidden and well concealed--of these are significant adverse impacts on the natural resources, agriculture and its produce and indeed extend to human health (Koner & Laha, 2021). There is further proof that increasing dosages of chemical fertilizers led to an emergence of pest resurgence; pesticides residues considerably exceeding permissible limits contaminated drinking water and/or air often, a drop in biodiversity, nitrogen leaching and groundwater pollution, and soil heavy-metals build-up are very common in intensive agriculture regions (John & Babu, 2021). While such issues contributed to suicides in rural India, their unwarranted use also diminished pollinator populations (Baron et al.,  2017). There are many measures to ease the overwhelming cost burden upon farmers on account of farming and rising costs of cultivation. It pertains to the increased input subsidies made by various state and central governmentsthe fertilizer subsidy, the free supply of electricity for irrigation, the interest subvention on agricultural credit, and the premium subsidy for crop insurance. On the contrary, the recent trends show that 75% constitutes a higher number of electricity subsidies, reserved for agriculture consumers, from 2016-2019.

The rhythm of life for a significant portion of the world‘s population is intrinsically linked to the cyclical patterns of monsoons. These seasonal winds, predominantly experienced within the tropics between 20° North and 20° South latitude, dictate not only the climate but also the agricultural productivity across vast regions spanning South Asia, East Asia, Africa, Australia, and the Americas. This dependence is starkly highlighted by the fact that a considerable proportion of the world‘s arable land relies solely on rainfall, with monsoons being the primary source of this vital resource. In India alone, for instance, nearly half of the agricultural land is rainfed, a figure indicative of the broader reliance on monsoonal patterns in many other nations within these regions. Agriculture, the primary source of livelihood for many in these monsooninfluenced areas, remains heavily dependent on the timely arrival and consistent behavior of these rains. The delicate dance between the monsoon and agricultural cycles has shaped cultural practices, economic structures, and societal well-being for centuries. It is estimated that a substantial percentage of global agricultural production is reliant on monsoonal rainfall, underscoring the profound impact these weather systems have on food security and economic stability worldwide. The variability of monsoons – in terms of onset, intensity, duration, and spatial distribution – directly translates into fluctuations in crop yields, impacting everything from local food supplies and farmer incomes to national economies and international trade. Beyond the economic implications, the social vulnerability associated with monsoon variability cannot be overstated. Communities that depend on rainfed agriculture are particularly susceptible to the vagaries of the monsoon. Delayed or weak monsoons can lead to widespread crop failures, resulting in food shortages, economic hardship, and even migration. Conversely, excessively heavy rains can cause devastating floods, destroying crops, infrastructure, and livelihoods. Therefore, understanding, monitoring, and, crucially, forecasting the behavior of monsoons is not merely an academic exercise but a critical necessity for ensuring the prosperity and resilience of a significant portion of the global population. This book endeavors to delve into the intricate the need for Effective Climate Guidance i.e. 'ECG' of these monsoons, exploring the complex interplay of factors that govern their behavior and highlighting the advancements in forecasting that

1.1 Man’s place in Nature

All religions of the world share the view that man is the supreme being among God’s creations. He is the only one among many creatures to enjoy nature’s beauties and bounties. Nature is given to him so as to make responsible and judicious use of it. No religion justifies the most destructive attitude the modern man has developed towards his environment. All religions urge man to treat nature as a God-given gift, stating that God is omnipresent in the manifestations of the nature. It is irreligious for man to expect miracles and exploit the environment. Man must be confronted with the reality that struggle is essential for life rather than “struggle for existence.”

1.1 General

Renewable technologies are considered to be clean sources of energy. The optimal use of these resources minimize environmental impacts, produce minimum secondary wastes, and are sustainable based on current and future economic and social needs. Sustainable development requires methods and tools to measure and compare human activities’ and its environmental impacts for various products. Renewable energy sources (RES), which include biomass, hydropower, geothermal, solar, wind, and marine energies, supply 14% of the world’s total energy demand. Renewable resources refer to primary, domestic, and clean or inexhaustible energy resources. Large-scale hydropower energy supplies 20 % of the global electricity need. Wind power in coastal and other windy regions is a promising source of energy.

Renewable energy resources can make a decisive contribution to the economic, social and sustainable development of rural regions in developing countries, yet the consumption of fossil fuels is dramatically increasing along with improvements in the quality of life, the industrialization of developing nations, and the increase of the world’s population. It has long been recognized that excessive consumption of fossil fuel leads not only to a diminishing fossil fuel reserves more quickly, but also has a significant adverse impact on the environment. Such impacts result in increased health risks and the threat of global climate change. Changes to improve environmental conditions are becoming more politically acceptable globally, especially in developed countries. Society is slowly moving towards seeking more sustainable production methods, minimizing waste, reducing air pollution from vehicles, generating distributed energy, conserving of native forests, and reducing greenhouse gas emissions. Increasing consumption of fossil fuel to meet out current energy demands, however, has sounded alarms over regarding potential energy crisis. This has generated a resurgence of interest in promoting renewable alternatives to meet the developing world’s growing energy needs. Excessive use of fossil fuels has caused global warming from carbon dioxide emissions, therefore, promoting renewable forms of clean energy is eagerly required. To monitor the level of these greenhouse gas emissions, an agreement that has fulfills the objectives of the Kyoto Protocol was create with overall pollution prevention targets.