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The plants collect water by its root system available in the soil medium. A soil rich in nutrients cannot ensure success of crops unless the presence of satisfactory state of water and air, mechanical attributes and thermal regime. The physical properties of soil and plants greatly influence the movement, retention and use of water. The soil should provide sufficient pore spaces and size distribution and decomposition of rocks and for the movement and retention of water for plant needs. Rainwater, irrigation, groundwater, seepage, etc., contribute in replenishing the water in dried up soils. In all the cases thorough understanding of behavior of water is required to ensure the need of water to plants and optimize the use of irrigation water.

6.1 Soils

Soil is initially formed by the disintegration and decomposition of rocks and minerals and accumulation of biological residues. Usually the outer layer of the land surface is referred

7.1 General

The major portion of water in a crop field gets lost through evaporation and transpiration. Evaporation is the process by which water is changed from the liquid state to vapor state. It takes place from the adjacent soil, water surface or from the surfaces of leaves of the plants. Transpiration is the removal of water vapour through plant body. Evapotranspiration(ET) is the sum of evaporation and transpiration. The process of evaporation and transpiration goes on simultaneously and difficult to separate them in a crop field.

The term consumptive use is used to refer evapotranspiration together with the water used in the metabolic activities of the crop plants. The actual amount of water used in metabolic activities is insignificant (less than 1% to ET). Therefore, the consumptive use and evapotranspiration are often used as synonymous term. It includes the water consumed by the plants

Hydraulics of wells means the laws that are applicable to understand the flow of water through the formation and certain aquifer properties that determine the discharge of a well. Darcy’s law is used in studying groundwater flow though Darcy’s law is not valid under certain cases.

8.1  Water Bearing Formation

The earth’s crust is called the lithosphere which consists of hard rocks and disintegrated rock materials. The outer parts of the earth’s crust are porous and containing partially and fully filled up with water. The surface strata of the earth is partially filled with water and is called as zone of aeration and the zone below this which is completely filled with water is called the zone of saturation. The zone of aeration is divided into (i) the soil water zone (ii) the intermediate zone and (iii) the capillary fringe (Fig.8.1).

9.1 Introduction

Water is a precious commodity. Necessity of conservation of water supply is increasingly felt all over the world as the demand of it continues to increase when the sources of supply are increasingly scarce. The conveyance and proportional distribution of water is one of the most important part of any irrigation project. Water available in the stream, reservoirs or wells is carried to the field of use through canals. The economy of any irrigation project largely depends on how efficiently the water is being transported and distributed in respect to water losses and cost.

Water losses in irrigation channels are mainly due to evaporation from the water surface and seepage from the bed and side of the channels. Seepage losses some time become the single important factor which causes unavailability of water particularly in downstream of the channel in canal irrigation system and excess pumping of water in tube wells and river lift irrigation system.

Poor quality of water is one of the important factors causes gradual accumulation of salts on the ground or in the root zone of crops leads to saline and alkaline condition. This results in loss of permeability, toxicity and anaerobic conditions. In salt affected soils plants face constraint to derive their nutrients at the required rate due to high soil moisture tension, which affects adversely the crop growth and productivity.

10.1 Causes of Salt Problems

The following are the reasons for causing the soils become saline or alkaline.
1. Rise in water table: A rise in water table and high evaporation and transpiration rates with poor drainage lead to build up dissolved salts.
2. Quality of irrigation water: Irrigation water contains the dissolved salts exceeding certain limit cause accumulation of salts in soil profile.

10.1 Land and Water Resource

India has got the world’s 2.45% area and 16.87% of population with only the 4% of available fresh water (Table 11.1). This indicates the necessity of development of water resources and optimal use of it. India at macro level does not have short of water. But the shortage of water is due if not properly managed by conservation and sector wise utilization.

The water resource potential of the country has been assessed by different agencies in different time (Table 11.1). It is observed that the latest estimate of 1869bcm (1993) are within the little variation of the estimates since 1954. The utilizable water resources of the country are assessed 1123bcm by CWC (1993) of which 690bcm from surface water and 433bcm from ground water sources. This 690bcm can be harnessed if matching storage structures are built. The surface water utilizable potential may increase by 220bcm if inter-basin transfer

12.1 Introduction

Agricultural drainage is the removal of excess water from the farmland for the purpose of providing favorable soil air environment for plant growth. Removal of water may take place form the surface or below the surface of the land. The practice of lowering ground water table below the root zone depth to improve the plant growth or to reduce the accumulation of salts in soil is also called as drainage

Drainage system is broadly classified as surface & subsurface drainage. Removal of excess water over the land surface is known as surface drainage & that of removing water below the surface is known as subsurface drainage. The flow of water in the form of evaporation or evapotranspiration also play important role in improving drainage situation. It gives the idea of the time required to get the wetland workable though it is not called a type of drainage as because this is very slow process & cannot be controlled by the human activities. However, using of certain tree plants e.g., Eucalyptus, Poplar, Casurina or similar species in wet fields, which transpires at high rate and improves the drainage problem by lowering the shallow water table is the new idea known as bio-drainage.

The purpose of a sub-surface drainage system is to lower the ground water table and removal of salts beyond the crop root zone. The ground water beyond table may rise due to commonly practiced flood irrigation method, seepage from unlined channels, percolation of rain and runoff water and sub-surface flow from higher areas. Sub-surface drainage consists of drains laid at a specified depth, spacing and grade below the ground surface. The size, spacing and depth of drains depend largely on the soil-water properties viz., infiltration, saturated hydraulic conductivity, drainable porosity; and the requirement of removal of water through drains in certain time period fixed on the basis of rainfall and crop cultivated. The drains are usually placed in a pervious stratum. Suitable filter of coarse sand and gravel may be used when it is placed in a low permeable stratum. Sub-surface drainage serves the important job of removal of concentrated salt solution from the crop root zone particularly in arid and semiarid region.

Advantage of sub-surface drainage system

1. Since sub-surface drainage are underground, no loss of land for cultivation. Some part of the land goes out of use for making drains in surface drainage.

Blockchain technology has emerged as a revolutionary solution in various industries, and agriculture is no exception. By providing a secure and transparent system for recording and verifying transactions, blockchain has the potential to transform the agricultural sector. In this chapter, we will explore the role of blockchain in agriculture, its benefits, and various use cases that demonstrate its potential. Additionally, we will present key statistics and real- world examples to illustrate the impact of blockchain in agriculture.

The use of drones, or Unmanned Aerial Vehicles (UAVs), in the agriculture sector has ushered in a new era of precision farming. These versatile flying machines equipped with advanced sensors and cameras have the potential to transform various agricultural activities, resulting in increased productivity, reduced costs, and more sustainable practices.

This chapter explores the history of drones, their components and functioning, the numerous agriculture activities where drones can be employed, the benefits they offer, real-world use cases, challenges in adoption, and possible solutions to fully realize their potential in the agriculture sector.

Kautilya or Chanakya - probably the world’s first Management Guru who was well known for his management models and strategies - is not the first strategist or author to write the Arthashastra. There were lot of gurus - purva acharyas - and leaders before him. Chanakya studied them all and compiled them into one book known as Kautilya’s Arthashastra. The book was written centuries ago when the country was ruled by kings. But Chanakya had so much wisdom and foresight that, each time you read it, you will discover something new, something different.

The world has changed so much since he wrote the book. We are in the digital age now. But the basic principles haven’t changed. They are eternal. Even almost 2300 years later, we all want the same thing - we want to live a healthy life, a life that has quality. And Chanakya tells you exactly how to do that.

Across the globe, leadership is a subject of serious discussion, study, and research. Universities now have centers of leadership. Many times, in an organization, the members become specialized in their particular field and department but they miss out on the complete picture. The leadership ideas of Chanakya give an insight into some strategic sutras which are simple and easy to understand yet powerful and impactful when applied. Chanakya’s futuristic and time tested sutras relating to Philosophy and Ethics, Thought leadership, Qualities of a leader and Power and Responsibility, etc. will be explored in this chapter.

Technology spurs Agricultural productivity through various scientific methods and innovations which is evidenced by the success of the Green revolution leading to agricultural development.

The Green Revolution arrived in India in 1968 and had a remarkable impact on the world of agriculture by increasing production yield by 2.5 times, amounting to approximately 2 billion tones, which has been noted as the world’s highest growth rate in the agriculture sector. Because of the science and technologies used in the form of

Although “e-agriculture” and other initiatives to bridge the rural digital divide were already underway around the world, the Community (and the term “e-agriculture”) emerged following the World Summits on the Information Society in 2003 and 2005. The WSIS global participants recognized that when addressing the challenges of the digital divide, particularly in the context of rural livelihoods, problems extend beyond technology. It is a multifaceted problem characterized by ineffective knowledge exchange and information content management, as well as a lack of human resources, institutional capacity, and sensitivity to gender and the diverse needs of various groups. With WSIS participants identifying and naming “e-agriculture” as a key action line to address the Millennium Development Goals, the United Nations Food and Agriculture Organization (FAO) was tasked with leading the development and subsequent facilitation activities that would truly engage stakeholders at all levels.

The goal of sustainable agriculture is to meet society’s food and textile needs in the present without compromising the ability of future generations to meet their own needs.

Practitioners of sustainable agriculture seek to integrate three main objectives into their work: a healthy environment, economic profitability, and social and economic equity. Every person involved in the food system—growers, food processors, distributors, retailers, consumers, and waste managers—can play a role in ensuring a sustainable agricultural system.

Easykrishi is a young enterprise that uses digital interventions with an aim to change agricultural practices from Reactive Mode to Proactive Mode. It is a consortium of 12 FPOs and 150 Ground Organizations. 14 In a world of declining land-holdings, we realize aggregation of agricultural resources is the only way to keep this planet sustainable for human survival. Aggregation ensures viability and profitability of Agriculture. Easykrishi’s baby steps in the entire cycle of aggregation of agricultural resources have made significant impact for Food Producer Corporations across Karnataka and they have made a mark on organizations and individuals that are dedicated for the betterment of Agriculture and farmers.

Since the industrial revolution in the 1800s, automation got more advanced to efficiently handle sophisticated tasks and increase production. With increasing demands and shortage of labor across the globe, agriculture robots or commonly known as Agribots are starting to gain attention among farmers. Crop production decreased by an estimated 213 crores approx ($3.1 billion) a year due to labor shortages in the USA alone. Recent advancements in sensors and AI technology that lets machines train on their surroundings have made agrobots more notable. We are still in the early stages of an ag-robotics revolution, harnessing the full potential of the Internet of Things in agriculture, with most of the products still in early trial phases and R&D mode.

Smart Farming is a hi-tech and effective system of doing agriculture and growing food in a sustainable way. It is an application of implementing connected devices and innovative technologies together into agriculture. Smart Farming majorly depends on IoT thus eliminating the need of physical work of farmers and growers and thus increasing the productivity in every possible manner.

With the recent agriculture trends dependent on agriculture, Internet of Things has brought huge benefits like efficient use of water, optimization of inputs and many more. 

Study of Carpentry Hand Tool

Introduction

The process of making the wooden components is called carpentry. Carpentry deals with the mechanical work of making wood components such as making beds, roofs, wardrobes, tables, cases, utensils, floors, etc. It manages the structure work, furniture, cabinet making and so on joinery, i.e., preparation of joints is one of the significant activities in all wood works.

The products produced are used in making furniture, musical instruments, and building constructions like doors, windows, desks, chairs, cupboards, etc., of a place utilizing a specific kind of wood with the help of tools known as carpentry tools. Different wooden pieces are connected to make a useful product. Wood is used to make furniture, boxes, doors, windows, industrial floors, stairs, pencils etc.

Introduction

A sheet metal shop is a kind of workshop where different types of materials are used to make sheet metal and then it is flattened into thin sheets of desired shape and size. Sheet metals are used for the production of automobile bodies, utensils, almirah and cabinet appliances, etc.Sheet metal parts have many advantages, like they are less expensive, lighter in weight and can be modified into versatile shapes. Low-carbon steel is commonly used. The use of casting and machining is being replaced by metal stamping. The stamping press is a kind of machine tool in which most of the operations occur, and the sheet metal products which are obtained by the machine are called stampings.

Introduction

Welding is a fabrication process in which two or more materials or metal pieces are joined or fused with the application of heat, pressure, or both allowing them to cool and this causes fusion. Besides the work piece, a filler material is also sometimes added to the joint to form a pool of molten material that cools to form a joint based on welding and that will be stronger than the parent metal.

Arc Welding and its Types

It is a process of joining two metals using an electric current generated by the power supply, which gives the required amount of heat to metal pieces through which the metals melt and when the metal cools, which results in the binding of the two metals. In the case of this type of welding, the power supply is given, which creates an electric arc between the electrode and the metal rod. Both A.C. or D.C. power supplies can be used in arc welding and both consumable and non-consumable rods can be used.