INDIAN GEOGRAPHY

Detailed explanation-1: -The black soil get sticky when wet and difficult to work on unless tilled immediately after the first shower or during the pre-monsoon period.

Detailed explanation-2: -Black soils are very fine grained and dark, contain a high proportion of calcium and magnesium carbonates and highly argillaceous. When wet, they are very tenacious of moisture and exceedingly sticky.

Detailed explanation-3: -Black soils have the high water-retaining capacity. They are extremely compact and tenacious when wet, and develop wide cracks when dry. In other words, they swell greatly and become sticky when wet in the rainy season.

Detailed explanation-4: -The black soil is highly retentive of moisture. It swells greatly on accumulating moisture. Strenuous effort is required to work on such soil in the rainy season as it gets very sticky. In summer, the moisture evaporates, the soil shrinks and is seamed with broad and deep cracks.

Detailed explanation-5: -Clay is the smallest of particles. Clay is smooth when dry and sticky when wet. Soils high in clay content are called heavy soils.