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Agriculture involves a number of different aspects and considerations. The following is a list of physical conditions, along with the literature that may be used to learn more about them. There are three types of physical factors that have an impact on agriculture: 1. soils and fertilizers The level of fertility of the soil is a significant physical component that has an impact on agricultural production. Both the chemical and physical compositions of soils are distinct from one another. There are two types of soils: fine and coarse, porous and non-porous. Fine soils, such as loam or silt, are often considered to be particularly fruitful. The productivity of the soil is directly proportional to the chemical composition of the soil. A multitude of environmental variables and the expansion of the world’s population have combined to make the sustainability of agricultural systems a serious problem on a worldwide scale. the key to the management of soil fertility and also teach a meticulous grasp of plant nutrition, soil fertility, nutrients provided via fertilizers and manures, the production of fertilizers, and the preparation of manures all play an important role in the process. During the last few decades, a big number of agricultural scientists who work in the diagnostic sector have conducted research that has resulted in the development of several innovative approaches that are designed to assist farmers in fertilizing their crops in a more efficient manner. Bringing together in a single volume a complete explanation of both the theoretical foundations and the practical applications of these numerous strategies is one of the primary goals of this book. It was decided to engage the assistance of a group of highly regarded scientists in order to accomplish this goal. They were responsible for preparing the different chapters. These scientists are exceptional in their various fields of study, both in terms of theory and in terms of practice. 2. the weather climate change is a hard reality and changing weather patterns, retreating glaciers, polar ice melt, sea level rise, increased severity and occurrence of natural disasters like flood, super cyclone, drought, changes in hydrological cycles, crisis in freshwater and drinking water resources, uncertainty in cereal output, increasing vector borne diseases, changing migration pattern and flowering time, are just some of the consequences already being experienced by us. Coral reefs and mangroves are examples of ecosystems that are particularly sensitive to even the smallest changes in temperature. These ecosystems are especially fragile and delicate. It is possible that climate change would impose an extra strain on ecological and socio-economic systems in emerging nations such as India. These systems are related with fast urbanization, industrialization, and economic growth. In addition to the physical requirements listed above, agricultural engineers are required to have a fundamental understanding of agriculture in order to be able to properly execute their duties in their particular fields. It is of utmost significance to use a scientific approach in order to get a grasp of the issues that pertain to soil, plants, agricultural equipment, and overall management of these elements. Another aspect is rainwater harvesting, which is a method for collecting and storing rainwater. This water is then directed to flow to ponds, lakes, and other over- and underground storage places. This water can be used not only to replenish groundwater, but also to provide drinking water, for irrigation, for livestock, and for other functions that are typically associated with water. The rainwater is collected from a variety of hard surfaces, including roof tops and/or other sorts of constructed hard surfaces that are located above ground. Rainwater harvesting helps to preserve the mobility of transportation and avoid floods in some metropolitan areas. It also helps to prevent the roads in the village from becoming slushy during the rainy season. http://www.astralint.com/indian-books/state-of-the-art-report-on-sustainable-rainwater-harvesting-and-groundwater-rechare-in-developing-countiresnam-sandt-cen/isbn-9788170357704.aspx You may get further books about agriculture by going to the following website: http://www.astralint.com/indian-books/basics-of-agriculture-for-engineers-pbk/isbn-9789351242604.page.