Changes in Organic Carbon,NO3-N,Electrical Conductivity Values and Soil Respiration Along a Soil Depth Due to Surface Application of Organic Wastes

摘要

Changes in some chemical properties along a clay loam soil depth due to application of hazelnut husk,tea and tobacco wastes to soil surface were investigated under greenhouse conditions.At the end of 20,40 and 80 d of incubation,changes in organic carbon,total nitrogen,soil respiration(CO2 production),NO3-N,pH,EC were determined in 10,20,30,40 and 50 cm depth of the clay loam soil.While organic carbon in 0 to 20 cm soil depth decreased after 20 d,organic carbon in 30 to 50 cm soil depth increased between 40 and 80 d for all organic waste treatments.Except control treatment,organic carbon leached from soil surface(0-20 cm)to deeper soil layers(30-50 cm)of organic waste treatments between 40 and 80 days.Soil respiration significantly increased near the surface soil layers of organic waste treatments compared with the control.Organic carbon contents along soil depth generally increased with control(C)