Question

for the production of paddy pH level of soil should be between 5 to 8 why​

Answer 1

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.

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Answer 2

The pH level of soil should be between 5 to 8 for the production of paddy because if the soil is more acidic or alkaline, the soil will require more time to become neutral.

• For the production of paddy, neutral soil is required to create favorable conditions for it to grow.
• The pH level of soil from 5 to 8 is considered neutral which creates a favorable environment for paddy cultivation.
• If the pH level of the soil is more acidic or basic it will require time to be neutral which will create unfavorable conditions.
• Therefore, for paddy cultivation, a pH level of 5 to 8 is taken into consideration.