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Rocks and other parent materials weather to form soils which inherit their characteristics from their respective parent geological materials. Therefore, a thorough knowledge of the chemical composition of different rocks in the different climatic zones of India and their physical nature facilitates a thorough understanding of the relationship of different types of rocks and other geological formations situated in different regions of India to soils of the ...
Soil Fertility is the ability of soils to supply the nutrients to crops in the form, proportion and amount favourable for their growth and yield. Nutrient cations occur in the soil solution and are loosely held by clay/humic micelle as exchangeable cations and are also fixed by clay minerals in the form of non-exchangeable cations. Nitrate, sulphate and phosphate anions are loosely adsorbed on the surface of hydrous oxides of iron and aluminium in acidic soils ...
Soil genesis that studies the evolution of soils and the changes taking place in soil bodies has received increasing interest and attention in the twentieth century, and this yet continues. Despite the fact that the Indian soil scientists have made much investigation into the subject of soil genesis, classification, survey and evaluation, there are very few books that provide ample instructional material relevant to situation in India. The present book is ...
Despite the considerable progress made in enhancing the capacity of soils to produce crops through the use of manures and fertilisers, there are yet a large number of ignorant peasants in many Asian countries, including India, who have been growing crops without applying adequate amounts of manures and fertilisers to their crop fields and consequently obtaining considerably less yields. It needs to be realized by one and all that soil, particularly in the ...
No crop can be grown without being adequately supplied with the requisite amount of water at the proper time. A thorough knowledge of the hydrological cycle, amount and distribution of rainfall, water resources and irrigation projects in India facilitates efficient utilization of water for crop production. Inadequate supply of water to crops in semi-arid and arid regions adversely affects agricultural production. Properties of water, mode of its entry into the ...