Impact of different cropping and different nutrient management practices on soil carbon pools and soil carbon stock in vertic ustropept

Abstract

A research work was initiated to study the soil carbon pools and carbon stock as influenced by different cropping and nutrient management practices in Vertic Ustropept in the experiment which was initiated during 2013 as long term field experiment in TNAU, Coimbatore. Various nutrient management practices viz., organic, inorganic and integrated practices with different crops like brinjal, chilli and tomato were tried in the research. SOC and active pools of SOC viz., labile carbon(LC) and water soluble carbon(WSC) and soil carbon stock(SCS) after 6 years of treatment application revealed, application of 100% organics in brinjal recorded higher SOC, LC, WSC and SCS (12.30g/kg), (1.31g/kg), (193mg/kg) and (18.5t/ha) respectively. This research indicated that long-term application of 100% organics exerted significant effect on the active pools of soil organic carbon.