Journal
ARCHIVES OF AGRONOMY AND SOIL SCIENCE
Volume 69, Issue 8, Pages 1282-1297Publisher
TAYLOR & FRANCIS LTD
DOI: 10.1080/03650340.2022.2084084
Keywords
Biofertilizer consortia; enriched compost; organic farming; rice; soil health
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The use of enriched compost (ECM) improves the nutritional quality of rice and enhances soil biochemical properties, especially in acidic soils.
The enriched compost (ECM) comprising rock phosphate and biofertilizer consortia (BC) is a cheap source of organic input. A long-term field trial was initiated in kharif-2011 with the following treatment combinations used for rice sole-cropping: T-1, absolute control; T-2, 3.5 kg ha(-1) biofertilizer consortia; T-3, 5.0 t ha(-1) compost (CM); T-4, 5.0 t ha(-1) CM + 3.5 kg ha(-1) BC; T-5, 2.5 t ha(-1) ECM; T-6, 5.0 t ha(-1) ECM; and T-7, 0.5 t ha(-1) Azolla + 3.5 kg ha(-1) BC. Owing to the usage of ECM for nine consecutive years, the organic carbon pools and biochemical properties of the soil were enhanced, and the nutritional quality of rice was enriched. Further, the potassium permanganate oxidizable carbon, total organic carbon, and microbial biomass carbon increased by 46%, 20%, and 15%, respectively, in the surface soil with T-6 relative to T-3. Such finding highlights the benefit of ECM application relative to CM and BC in enhancing rice nutritional quality and soil biochemical properties. Overall, the study suggests the use of 5 t ECM ha(-1) to improve the soil biochemical properties and nutritional quality of rice subjected to acidic inceptisol.
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