What crops like alkali ground?

Alkali or sodic soils (commonly called 'usar' or 'reh' in India) have sufficient exchangeable sodium to interfere with the growth of most crops. High pH (>8.5) and high exchangeable sodium (ESP > 15) coupled with low organic matter are considered to be the most important constraints for plant growth in salt-affected soils.

These soils are characterized by poor physical and chemical properties. The soil texture is usually clay or clay loam that becomes hard when dry and sticky when wet. The high sodium content also causes the soil to disperse and lose its structure. This can lead to poor drainage and waterlogging.

Alkali soils can also be toxic to plants. The high pH and sodium content can cause nutrient deficiencies and interfere with the uptake of water and nutrients. This can lead to stunted growth, yellowing of leaves, and eventually death.

Despite the challenges, there are some crops that are able to tolerate alkali soils. These crops include:

* Barley

* Wheat

* Alfalfa

* Sugarbeets

* Cotton

* Sorghum

These crops are able to tolerate high pH and sodium levels by a variety of mechanisms. Some crops, such as barley and wheat, have deep roots that allow them to access water and nutrients from deeper in the soil. Other crops, such as alfalfa and sugarbeets, have the ability to accumulate sodium in their leaves without showing any adverse effects.

By choosing crops that are tolerant of alkali soils, it is possible to grow crops on these soils and improve agricultural productivity.