Impact of Organic and Inorganic Fertilizers on Microbial Populations and Biomass Carbon in Paddy Field Soil

Effects of Fish Pond Effluent and Inorganic Fertilizer on Amaranthus Yield and Soil Chemical Properties in Asaba, Delta State, Nigeria

“…The higher yield obtained in NPK15:15:15 treated plots at the early season could be attributed to the immediate nutrients release while the higher residual nutrient build-up in the fish pond effluent treated plot which resulted in higher yield in late season could be due to the long term effects of fish pond effluent (Kolade et al, 2006). Vitamin C content that was higher with fish pond effluent application in late season agreed with previous report that increase in organic matter content leads to an increase in soil microbial population (Nakhro and Dkhar, 2010), while high microbial population had been reported to improve the antioxidant capability of the soil which according to Skwarylo-Bednarz and Krzepilko (2008) could lead to increase vitamin C content. The contribution of fish pond effluent to residual pool of nutrients in soil releases the nutrients slowly thereby preventing quick leaching or loss of nutrients (Makindeet al, 2010).…”

Effect of Integrated Nutrient Management on Soil Microorganisms under Irrigated Banana

“…The changes in soil organic carbon contents are directly associated with the changes in microbial biomass carbon and biological activity in the soil (Nakhro and Dkhar, 2010 Hence, it could be concluded that addition of organic manures along with recommended dose of fertilizer to be an ideal option to sustain soil fertility in terms of biological properties, soil organic carbon and crop productivity besides being economically competitive and productive under soil and climatic conditions of Western zone of Tamil Nadu.…”

Improving Biodiversity in Rice Paddy Fields to Promote Land Sustainability

“…Continuous cultivation with frequent tillage results in rapid loss of organic matter through increased microbial activity (Shepherd et al 2001 ). Nakhro and Dkhar ( 2010 ) observed that the application of organic fertilizers increased fungal and bacterial populations as well as microbial biomass carbon compared to the application of inorganic fertilizers or a control. The increases were found both at surface soil depth (0-15 cm) and at sub-surface soil depth (15-30 cm); however, the increases were greater at sub-surface soil depth.…”