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Vertical Distribution of Soil Organic Carbon and Soil Nutrients in Sericulture-Based Agroforestry System of Assam, North Eastern India.
Abstract
This study aimed to evaluate the available soil nutrients and soil organic carbon at different soil depths. The study was carried out in five selected sites, located in different agro-climatic zones of Assam. In this investigation nitrogen contents in the studied soil layers ranged from 374.28±4. 23Kg.ha-1 to 272.56±3.90 Kg. ha-1, soil available phosphorus ranged from 29.06±1. 58Kg.ha-1 to 18.25±3. 13Kg.ha-1 and soil available potassium from 301.45±9.34Kg ha-1. to 182.90±5.76Kg ha-1. Soil organic carbon, in this study, showed a decreasing trend from the topsoil (0-10cm) to the bottom soil(20-40cm), and a significant difference in the SOC contents in all three soil depths was observed from the study site Kohora, but no significance difference was recorded from Jogduar and Boko.
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