What are the properties of black soil?

What are the characteristics of black soil?

• Clayey texture and are highly fertile.
• Rich in calcium carbonate, magnesium, potash, and lime but poor in nitrogen and phosphorous.
• Highly retentive of moisture, extremely compact and tenacious when wet.
• Contractible and develops deep wide cracks on drying.

What are the composition of black cotton soil?

Black cotton soil is the clay-rich soil i.e. it contains calcium, carbonate, potash, and hold moisture and is mainly formed in the tropics and subtropics region. Black cotton soil is also rich in lime, iron, magnesium but contains a low amount of phosphorous, nitrogen, and organic matter.

What are the uses of black cotton soil?

The black cotton soil blocks crack on drying. Mixing stabilisers with BC soil to press soil blocks crack on drying. Mixing stablisiers with BC soil to press soil blocks proves difficult because the clay tends to form lumps. To overcome these obstacles a project was initiated.

What is the active zone in black cotton soil explain the properties of black cotton soil?

The zone up to which the soil gets affected for swelling and drying is called active zone. Water table in the areas of black cotton soils is deep hence it is the rain water and storm water which is to be prevented from coming into contact with black cotton soil of the active zone.

What are the three main features of black soil?

(i) Black soil is fine textured and clayey in nature. It is suitable for growing cotton. (ii) Black soil has high amount of lime, iron, magnesium and generally low quantities of Phosphorus, Nitrogen and organic matter. (iii) It is formed from weathered lava rocks, thus is black in colour.

Is black cotton soil acidic?

The pH of black soil is 7.2 – 8.5. The soil is deficient in nitrogen, phosphate and organic matter but rich in potash, calcium and magnesium. Such soil results from weathered material of metamorphic rocks. It is porous and friable neutral to acidic in reaction.

Is black cotton soil clay soil?

Black cotton soils are clay rich soils formed in regions (tropics and subtropics) having poor drainage conditions. Such conditions favour the formation of such clays which have montmorillonite clay mineral as the principal clay mineral.

Is black soil good for plants?

Black soil is ideal for growing crops that are cotton, sugarcane, tobacco, wheat, millets, and oilseeds. Black soil is to be the best variety of soil for the cultivation of cotton. Besides cotton, it is also suitable for producing cereals, oilseeds, citrus fruits and vegetables, tobacco and sugarcane.

What are the three uses of black soil?

Because of their high fertility and retentivity of moisture, the black soils are widely used for producing several important crops. Some of the major crops grown on the black soils are cotton, wheat, jowar, linseed, Virginia tobacco, castor, sunflower and millets.

What is black cotton?

Definition of black cotton : a soil formed in the Deccan region of India by the disintegration of a black lava.

Is black cotton soil good for construction?

The physical properties of Black cotton soil (BC soil) vary from place to place. As such Black cotton soil (BC soil) has very low bearing capacity and high swelling and shrinkage characteristics. Due to its peculiar characteristics, it forms a very poor foundation material for road construction.

How is black soil formed describe its main features?

Black soil is formed by the weathering or breaking of igneous rocks and also by the cooling or solidification of lava from the volcano eruption. Therefore, it is also called lava soil. This soil is formed from rocks of cretaceous lava and is formed from the volcano eruption.

Why is black soil suitable for growing cotton?

Important features of black soil: Regur means cotton – best soil for cotton cultivation. Most of the Deccan is occupied by Black soil. Mature soil. High water retaining capacity. Swells and will become sticky when wet and shrink when dried. Self-ploughing is a characteristic of the black soil as it develops wide cracks when dried. of black.htm

What are the properties of black cotton soil?

Black soil has a texture like clayey and is highly fertile.

Black soil structure is cloddish or sometimes friable.

Black soil when dry gets a contract and develops deep wide cracks.

Black soil expands when they are wet and they are hard to plow.

Black soil contains almost 50\% of clay and can hold water for a long time.

Which soil are best for cotton?

The Best Soil for Cotton. The cotton favorite,sandy loam,is silt and clay that contains some sand.

Cotton and Soil Fertility. For years,it was commonly thought that cotton decreased soil fertility.

Poor Soil for Cotton. Cotton planted in heavy clay soil risks infestation by boll weevils.

Soil Temperature an pH.

What are the uses of black soil?

In places with consistent rain, black soil is normally used for growing millet, cotton, soybean, sorghum and pigeon pea. When the soil is irrigated, black soil is used to cultivate other crops, for example, sugar cane, wheat, tobacco, and citrus crops. The soil can be used as a building material.