Question

For the production of paddy the pH level of soil should be between 5 to 8, why?​

Answer 1

DESIRABLE SOIL pH FOR OPTIMUM CROP PRODUCTION pH RANGE

The desirable pH range for optimum plant growth varies among crops. While some crops grow best in the 6.0 to 7.0 range, others grow well under slightly acidic conditions. Soil properties that influence the need for and response to lime vary by region. A knowledge of the soil and the crop is important in managing soil pH for the best crop performance.

Soils become acidic when basic elements such as calcium, magnesium, sodium and potassium held by soil colloids are replaced by hydrogen ions. Soils formed under conditions of high annual rainfall are more acidic than are soils formed under more arid conditions. Thus, most southeastern soils are inherently more acidic than soils of the Midwest and far West.

Soils formed under low rainfall conditions tend to be basic with soil pH readings around 7.0. Intensive farming over a number of years with nitrogen fertilizers or manures can result in soil acidification. In the wheat-growing regions of Kansas and Oklahoma, for example, which have soil pH of 5.0 and below, aluminum toxicity in wheat and good response to liming have been documented in recent years.

Answer 2

The production of paddy although pH of rice soil become neutral.

Explanation:

pH:

1. pH is a measure of how acidic/basic water is.
2. The range goes from 0 to 14, with 7 being neutral.
3. pH of less than 7 indicate acidity, whereas a pH of greater than 7 indicates a base.
4. The pH of water is a very important measurement concerning water quality.

• Fertile riverine alluvial soil is best for rice cultivation.
• Although pH of rice soil become neutral, it should be 5-8.
• Because, if soil is more acidic or more alkaline, it will need more time to become neutral.