What is it about?
Potassium is a major nutrient for plant growth. It is a metal element and is required for various functions in plant system. About 90% of potassium remains in rice straw. A huge amount of potassium is removed from soil as rice straw not returned to soil. We studied the rice straw incorporation in soil for recycling of removed potassium.
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Why is it important?
Chemical potassium fertilizer is costly and the source of potassium in nature is limited. Use of chemical salts e.g., KCl for potassium source may have some adverse effects on soil properties. On the other hand use of rice straw as an organic source of potassium is unique for good soil health. We tried to quantify the potassium comes from rice straw and its effects on rice yield.
Perspectives
This practice is environment friendly. It improves the soil physical, chemical and biological condition. Rice straw as a source of potassium and also as source of carbon has a combined effect in soil health and soil microbes. It can save some money of marginal farmers.
Dr. Aminul Islam
Bangladesh Rice Research Institute
Read the Original
This page is a summary of: Rice straw as a source of potassium for wetland rice cultivation, Geology Ecology and Landscapes, July 2017, Taylor & Francis,
DOI: 10.1080/24749508.2017.1361145.
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