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Tillage is the physical manipulation of the soil with tools and implements which, results in good tilth for better germination and subsequent growth of crops.

Tilth is the physical condition of the soil resulting from tillage. Soil is said to be in good tilth when it is mellow, friable and adequately aerated. Tilth is dynamic. Mechanical forces may change the roughness of the soil surface, the total porosity and bulk density of the tilled layer and the aggregate or clod size. Heavy rainfall and high velocity wind or water destroys the tilth. The action of wetting and drying, freezing and thawing regenerates desirable tilth. The roughness of the soil surface is an index of the amount of water that can be stored in soil depressions and may also be related to the resistance of the soil surface to sealing. Roughness may be related to rate of evaporation, transfer of heat and air between the soil and atmosphere.

Cultivation involves management of physical environment to produce a favourable habitat for successful crop production. Primitive man used tools to disturb the soil for placing the seeds. The word tillage is derived from the Anglo-Saxon words tilian and teolian means to plough and prepare soil for seed sowing, to cultivate and to raise crops. Jethrotull who is considered as father of tillage suggested that ploughing is necessary so as to make the soil into fine particles.

Tillage is the mechanical manipulation of the soil either with tools and implements for obtaining conditions ideal for seed germination, seedling establishment and growth of crops.

Tillage includes all operations and practices that are used for the purpose of modifying soil physical characters. Tillage is the most difficult and time consuming operation in crop production. About 30 per cent of the total cost of cultivation goes for tillage operations.

Tillage operations in various forms have been practiced from the very inception of growing plants. Primitive man used tools to disturb the soils for placing seeds. The word tillage is derived from the Anglo-Saxon words tilian and teolian, meaning to plough and prepare soil for seed to sow, to cultivate and to raise crops. Jethro Tull, who is considered as father of tillage suggested that thorough ploughing is necessary so as to make the soil into fine particles.

Tillage operations are the basic operation, which need to be performed at proper moisture and temperature condition (climatic factor) to attain high degree of germination and better plant growth. Tillage may be defined as mechanical manipulation of soil for the purpose of germination and plant growth but it also does the followings:

Tillage management and seedbed preparation is crucial for crop establishment, growth and ultimately, yield. Typically, the aims of cultivation are to incorporate crop residue, bury weeds and loosen soil to allow appropriate soil–seed contact, easy flow of nutrients, air and water and unimpeded root penetration and crop growth (Hermawan and Bomke, 1997; Bengough et al., 2006). The use of tillage to prepare seedbeds and the subsequent benefits are well documented. However, the amount of tillage and best practice in terms of optimumsoil physical properties specifically for the establishment period has received less attention in comparison. The influence of a seedbed can vary greatly in terms of soil aggregation and subsequent porosity. This soil arrangement, therefore, has direct impacts on soil temperature, water content, oxygen availability and strength, all of which have the potential to affect the performance of the seedbed and its ability to provide an adequate environment for crop establishment. In a review, Braunack and Dexter (1989) stated as summary of previous works conducted on soil aggregation that aggregates will exhibit differing physical and chemical properties depending on the size of the aggregates, thus influencing the suitability of a seedbed for germination, emergence and root development, by influencing factors such as intra- and inter-aggregate aeration. Schjønning and Rasmussen (2000) found that cultivation methods can have large impacts on surface soil layers, altering both strength and pore dynamics (air and water filled), which can restrict plant growth. The relationship between soil physical properties and the plant root systems are vitally important in this process since they directly affect seedbed quality (Awadhwal and Thierstein, 1985; Aubertot et al., 1999; Dexter, 2004).

Tillage

The mechanical manipulation of soil with tools and implements for obtaining conditions ideal for seed germination, seedling establishment and growth of crops is known as tillage. Tillage may be described as the practice of modifying the state of the soil in order to provide conditions favourable to crop growth.

2.1. Biotechnology institutes

Regional office of ICGEB (International Centre for Genetic Engineering and Biotechnology) at New Delhi (Headquarters at Trieste, Italy established in 1983).

Lal Bahadhur Shastri Centre for Advanced Research in Biotechnology at IARI, New Delhi

National Institute of Animal Biotechnology, Hyderabad

The National Food Security Bill, 2011 designed to make access to food a legal right, is the last chance to convert Gandhiji’s vision of a hunger-free India into reality.

Mahatma Gandhi’s articulation of the role of food in a human being’s life in his speech at Noakhali, now in Bangladesh, in 1946 is the most powerful expression of the importance of making access to food a basic human right.  Gandhiji also wanted that the pathway to ending hunger should be opportunities for everyone to earn their daily bread, since the process of ending hunger should not lead to the erosion of human dignity.  Unfortunately, this message was forgotten after the country became independent in 1947, and government departments started referring to those being provided some form of social support as “beneficiaries”.  The designation “beneficiary” is also being applied to the women and men who toil for 8 hours in sun and rain under the Mahatma Gandhi National Rural Employment Guarantee Programme (MGNREGA).  Sixty-five years after Gandhiji’s Noakhali speech, we find that India is the home for the largest number of under- and malnourished children, women and men in the world.  There are more persons going to bed partially hungry now, than the entire population of India in 1947.

Introduction
 
In India, most of the agricultural soils are deficient in one or more of the essential plant nutrients required for raising healthy crops and harvesting potential yield. Acidity, alkalinity, salinity, anthropogenic processes, nature of farming, and erosion are the main factors that can lead to soil degradation either alone or in combination of more than one factors.

Introduction

Challenges in agriculture and natural resource management in the past have prompted changes in agricultural education, research, and extension globally. The sustainable development of agriculture in a country largely depends on the effectiveness of its agricultural extension strategies, encompassing approaches, service delivery, methodology, and processes. The desired outcome of agricultural development is farmers’ outcomes, achievable through engagement, learning, and participation in research and extension processes. Agricultural extension played a significant role in the green revolution by providing farming communities with appropriate technologies and optimal cropping practices. This helped countries transition from being food deficit to food exporting (Ratnakar, 2016). Additionally, extension services play a crucial role in expanding knowledge, skills, and attitudes about the management of socio-economic-agricultural practices by understanding the existing techno political ecosystem and exploring a basket of technology alternatives for making informed decisions.

In dryland areas, moisture conservation accounts prime most important concept for maximizing productivity of dryland crops. Varied topographic and agro- climatic conditions ranging from arid to semi-arid climates with high evaporation because of varied temperature regimes permit the cultivation of drought resistance crops. Reducing the cost of cultivation without compromising the socio-economic status of farmers is prime importance. Conservation of moisture by reducing the weed menace is great task performed by the dryland farmers. Under such situations, effective utilization of dryland tools and implements used are of a primitive nature throughout the dryland farmers for higher factor productivity. Traditional farm tools and implements for self-sustenance have been adapted through experience over generations to meet emerging socio- economic and farming challenges.

Relatively small yields consequently larger areas must be farmed for a given return and the successful exploration of dryfarming requires the adoption of methods. The methods which enable farmers to do the maximum effective work with the smallest expenditure of energy. The type of soils and topographic conditions largely influence the type, size and shape of particular tillage tools/ implements among the dryland farmers. The following is a list of local tools/ implements found in the various dryland regions.

Scientific research is always based on observable and measurable facts. This applies to physical as well as humanitarian fields of science. In order to investigate social or psychological phenomenon, most of the times we need quantified information related to the phenomenon under investigation. In order to secure this data, we need one or more method/ means of collecting observable/measurable data.

In this chapter we will talk about the tools which are required to make project in artificial intelligence. All this bellow discussed tools are uses python programming language for making any project in any respective field. We have discussed about how anyone can install and use the tools to built a real time project in artificial Intelligence.

Using Python IDE

To download and install Python visit the official website of Python https://www.python.org/downloads/and choose your version. We have chosen Python version as per requirement all the codes in this book were on python version 3.6 as you can see in the Fig. 7.1.

Efficient horticultural production depends greatly on appropriate tools, implements, and timely cultural operations. This chapter introduces the major equipment used for land preparation, planting, weeding, pruning, propagation, irrigation, harvesting, and routine crop management. It emphasizes correct tool selection according to crop, operation, plant structure, and working conditions. Digging tools, secateurs, loppers, pruning saws, grafting knives, and other specialized implements are discussed along with principles of maintenance, sharpening, sterilization, and safe handling. The chapter also explains important cultural operations that influence crop establishment and productivity. Proper use of tools improves precision, reduces labour, prevents plant injury, and increases operational efficiency in horticultural systems.

This chapter would typically focus on the practical implementation aspects of a national drought management policy, emphasizing the scientific and technological tools, analytical models, and ongoing research necessary for effective drought preparedness, mitigation, and response. 10.1.1 Drought Monitoring and Early Warning Systems • Indicators and Thresholds: Defining and utilizing a suite of meteorological, agricultural, and hydrological indicators (e.g., Standardized Precipitation Index (SPI), Aridity Anomaly Index (AAI), Normalized Difference Vegetation Index (NDVI), soil moisture data, reservoir levels, groundwater levels). • Monitoring Networks: Establishing and maintaining networks of ground-based weather stations, rain gauges, and river flow gauges. • Remote Sensing and GIS: Utilizing satellite imagery and Geographic Information Systems (GIS) for large-scale, near real-time drought assessment, vegetation health monitoring

Fundamentally toposheet represents a kind of map in which topographic features of particular area is given details on the map features in two dimensional land surfaces. It shows both horizontal and vertical portion of the terrain with a combination of contour lines, contours, symbols, labels and related representation together in one piece of paper. Toposheet portray the shapes, location of mountains, many natural and manmade features, and the toposheet combinedly uses for extracting accurate information about particular area containing land surface features.

6.1 Introduction

Torrefaction is a thermophilic process of biomass conversion into a solid, friable, homogenous coal-like material, which has better fuel characteristics than the original biomass. Torrefaction involves the heating of biomass material in the absence of air at 250 to 300°C temperature. Torrefaction produces high-grade hydrophobic nature solid biofuels from various streams of woody biomass or agro residues.Torrefied biomass has high energy density then the original biomass which make torrefied biomass as renewable alternate source for power generation in coal power plant. Torrefied biomass being hydrophobic in nature can be stored easily for longer duration with negligible biological degradation. At 250-300°C temperature volatilization has been taking place and around 30% mass of the biomass is reduced as compared to original untorrefied biomass with net energy loss of approximately around 10%.The end product is a predictable, homogeneous, hydrophobic, high value solid biofuel with far higher energy density and calorific value than the original biomass feedstock. During the torrefaction process a combustible gas is released, which can also utilised to provide heat to the process. The process diagram of torrefaction process is shown in Fig. 6.1.

Hardness is the total soluble Ca and Mg Salts (in same cases Fe salts). It includes sulphates and chlorides along with carbonate, bicarbonate and hydroxide salts. Soft water: 0-100 mg/L, Hard water: 100 - 300 mg/L, Very hard water: > 300 mg/L CaCO3. Total hardness should be 50- 300 mg/L. Very hard water causes osmoregulatory stress to fish. Hardness below 50 mg/L reduces growth of plankton.
Reagents
1. 10.01M EDTA solution: Dissolve 3.72 g disodium salt of EDTA in distilled water and make the volume 1L by shaking.
2. Eriochrome Black T (EBT) Indicator: Add 0.2 g dry Eriochrome powder to 50 ml of triethyl amine. Add 5 ml absolute alcohol and shake it.
3. Ammonium chloride-Ammonium hydroxide buffer solution: Dissolve 17.5g ammonium chloride (NH4Cl) in 142 ml of ammonia solution (NH4OH). Add distilled water to make the volume 250 ml.
Procedure
1. Take 50ml water sample in a 250 ml conical flask.
2. Add 2 ml buffer solution and 5 drops of EBT indicator.
3. Wine-red colour will appear.
4. Titrate against 0.01M EDTA till the colour changes into bright greenish blue.

In dry combustion technique, the combustion of soil sample (about 250 mg and mm sieved) is carried out at high temperature (about 1000 ºC) through feeding in an inert boat in the electric furnace. The CO₂ produced from the oxidation of carbon present in the soil sample at high temperature is carried towards non dispersive infrared detector (NDIR) by a carrier gas where it is quantified and total carbon content is determined.

Phosphorus is nearly exclusive found as phosphates in waters and wastewater and it categorised in to: a) orthophosphate, (b) organically bound phosphate and (c) condensed phosphates. Theses all three forms of phosphorus occur in solution, in the body of aquatic organisms through food chain. All the forms of phosphorous, whether dissolved or particulate are converted to inorganic forms (phosphate) after digestion of sample. Various methods use for the digestion of the sample including use of perchloric acid, H2SO4- K2SO4, H2SO4- HNO3 etc. The H2SO4- HNO3 digestion technique is discussed here.
Reagents
1. Phenolphthalein indicator
2. Conc. sulphuric acid (H2SO4)
3. Conc. nitric acid (HNO3)
4. Sodium hydroxide (NaOH), 1 N: Dissolve take 40 g of NaOH in 1000 ml of distilled water
Procedure
Digestion
1. Take 50 ml of sample in a Kjeldahl flask
2. Add 1 ml H2SO4 and 5 ml HNO3
3. Once the HNO completely removed, digest the sample on a hot plate until the volume approaches 5 ml. Then, keep heating the solution until it loses colour (you may also heat it in a beaker covered with a watch glass to prevent excessive evaporation).