1.7.1.2. Black Soil

The black soils are black in colour and are also known as regur soils. Black soil is ideal for growing cotton and is also known as black cotton soil. It is believed that climatic condition along with the parent rock material are the important factors for the formation of black soil. This type of soil is typical of the Deccan trap (Basalt) region spread over northwest Deccan plateau and is made up of lava flows.

Black soil, also referred to as regur soil, is rich in moisture and nutrients, making it particularly suitable for cotton cultivation. The formation of black soil is closely related to the volcanic activity in the Deccan plateau, leading to the creation of basalt, which contributes to its unique properties. Weather and climate conditions play a significant role in determining the fertility of this soil, allowing it to support various crops.

Imagine baking a cake using volcanic ash from a past eruption. Just as the ash contributes to the texture and flavor of the cake, the volcanic activity that created black soil provides it with essential nutrients, making it excellent for farming, especially for cotton crops.

They cover the plateaus of Maharashtra, Saurashtra, Malwa, Madhya Pradesh and Chhattisgarh and extend in the southeast direction along the Godavari and the Krishna valleys.

Black soil is primarily found in several key regions of India, including Maharashtra, Madhya Pradesh, and Chhattisgarh. The geographical spread of this soil type aligns closely with river valleys such as the Godavari and Krishna, which provide essential moisture and nutrients, further enhancing its agricultural viability.

Think of black soil as the breadbasket of India. Just as certain types of bread are made in specific regions based on the ingredients available, black soil is found in specific areas of India where climatic conditions and geological factors converge to create the perfect environment for cotton cultivation.

The black soils are made up of extremely fine i.e. clayey material. They are well-known for their capacity to hold moisture. In addition, they are rich in soil nutrients, such as calcium carbonate, magnesium, potash and lime. These soils are generally poor in phosphoric contents.

The black soil contains clay particles that help it retain moisture effectively, making it advantageous for crops that require a lot of water. It is rich in various nutrients essential for plant growth, such as calcium and magnesium. However, it lacks phosphorous, which means that farmers might need to add this nutrient to ensure high crop yields.

Imagine a sponge soaking up water. Black soil acts like a sponge, holding moisture for plants during dry periods. Just as a sponge can deplete if it's not soaked regularly, farmers must manage the nutrient levels carefully to keep the soil productive.

These soils develop deep cracks during hot weather, which helps in the proper aeration of the soil. They are sticky when wet and difficult to work on unless tilled immediately after the first shower or during the pre-monsoon period.

The moisture retention capacity of black soil highlights its importance during various climatic conditions. When dry, the soil develops cracks that allow air to flow through, facilitating the growth of plant roots. However, when it rains, the soil becomes sticky, making it tough to work with. Farmers need to time their plowing and planting to ensure they're working with the soil when it’s in the right condition for cultivation.

Think of black soil like a rubber band. When it's dry, it pulls apart and becomes easy to stretch (the cracks allow for aeration), but when wet, it becomes soft and difficult to manipulate, just like a rubber band that’s not elastic when too warm.

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