Soil Survey: Soil survey is the study and mapping of soils in the fields. It is starting point for all soil researches. The following are the main objectives of soil survey: (1) To describe and classify soils giving uniform system of classification with uniform nomenclature in order to correlate the soils of different area. (2) To show distribution of different [...]
(A) Physical Properties of Soils: Physical properties of the soil can be discussed under the following heads: (1) Soil separates and texture, (2) Structure of soil, (3) Weight and soil density, (4) Porosity of soil, (5) Permeability of soil, (6) Soil colour, (7) Temperature of soil, and (8) Soil Plasticity, Compressibility and Erodibility. 1. Soil Separates and Soil Textures: Mineral [...]
Saline soils represent a group of soils in which percentages of soluble salts, usually chlorides and sulphates of the alkali bases are very high. The pH of saline soils are always high. In India saline soils occur in many provinces, as U.P., West Bengal, Punjab, Bihar, Orissa, Maharashtra Tamil Nadu, M.P., Andhra Pradesh, Gujarat, Delhi and Rajasthan covering an area [...]