EFFECT OF CO-COMPOST MADE FROM CATTLE MANURE AND SAWDUST ON THE GROWTH AND YIELD OF OKRA (ABELMOSCHUS ESCULENTUS L.)
Journal: Malaysian Journal of Sustainable Agriculture (MJSA)
Author: Asma Khatun, S. Sikder and J.C. Joardar
This is an open access article distributed under the Creative Commons Attribution License CC BY 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited
Co-composting is an effective and environment friendly method of solid waste management to make valuable organic soil amendment which helps to maintain soil fertility in a sustainable way. An experiment was conducted to make co-compost using cattle manure (CM) and sawdust (SD) in different ratios (w/w) for the correct mixing proportion of raw materials to investigate the nutrient status of co-compost, and to evaluate the potential value of co-compost after incorporation into soil to form a nutrient rich growth media for Abelmoschus esculentus L. The experiment was laid out in a Completely Randomized Design (CRD) with five treatments and three replications comprising of only SD, only CM, sawdust-cattle manure mixture in the ratio of 1:1 (SD: CM=1:1), 1:2 (SD: CM= 1:2) and 2:1 (SD: CM= 2:1) by weight. Compost samples were collected for nutrient analysis after 75 days of composting. The highest value of total N, P and S were obtained in CM compost. Organic carbon (OC) and C:N ratio were found higher in SD compost. Higher growth and yield of okra were recorded under SD:CM= 1:2 treatment. On the basis of the experimental results, combined application of SD and CM at 1:2 ratio was the right mixing proportion. So, the organic fertilizer mixed with SD and CM at 1:2 ratio would be an efficient soil amendment that would improve soil quality, promote plant growth and increase yield.