Vol. 7, Issue 5 (2019)
Changes in biochemical properties during decomposition of various crop residues
Author(s): GS Laharia, VD Navale, PH Rathod, SD Jadhao and AB Aage
Abstract: The present investigation was conducted during 2017-18 to study the biochemical and biological changes during decomposition of crop residues at Research Farm, Department of Soil Science and Agricultural Chemistry, Dr. Panjabrao Deshmukh Krishi Vidyapeeth, Akola. The various crop residues viz; wheat straw, shredded cotton stalks, sorghum stubbles and glyricidia leaves along with rock phosphate, urea, elemental sulphur, cow dung slurry and PDKV decomposing culture were decomposed upto 120 days by pit method. The experiment was laid in completely randomized design with four replications. The moisture content of compost was maintained at 60 to 70%. The changes in various biochemical parameters were monitored at regular intervals. The biochemical properties of compost revealed that, cellulose, hemicellulose and lignin content significantly decreased as the decomposition progressed. However the higher cellulose (15.37%) and lignin (7.45%) was observed in compost prepared from 30% wheat straw + 30% shredded cotton stalks + 20% glyricidia leaves + 20% sorghum stubbles at 120 days of decomposition whereas, the hemicellulose content was observed in 100% shredded cotton stalks. The pH, organic carbon and C: N ratio decreased with increased in decomposition. The CO2 evolution increased initially during first sixty days and thereafter decreased as decomposition progressed. The CO2 evolution was increased upto 90 days, thereafter decreased slightly up to 120 days of decomposition of various crop residues. However, the combination of crop residues in equal proportion i.e. 25% wheat straw+25% shredded cotton stalks + 25% glyricidia leaves +25% sorghum stubbles were found beneficial for increasing CO2 evolution.
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How to cite this article:
GS Laharia, VD Navale, PH Rathod, SD Jadhao, AB Aage. Changes in biochemical properties during decomposition of various crop residues. Int J Chem Stud 2019;7(5):3383-3386.
