Effect of canopy of acacia nilotica on soil fertility status at varying soil depths in wheat based agroforestry system

In the present study, a considerable build up in soil organic carbon under tree canopy as compared to open canopy was found and soil organic carbon under tree canopy decreased with an increase in soil depth and increasing canopy distance. The total nitrogen percentage in soil decreased with an increase in depth and canopy. In case of available soil phosphorus, it decreased under the tree canopy with increasing soil depth and canopy distance.