Studies on the release of adsorbed copper by soils and compost

Abstract

Copper deficiency has been observed in soils rich in organic matter such as peat or in light mineral soils derived from silica and carbonate rich sediment. The deficiency can be corrected by adding copper sulphate in different doses. Also, the unavailable copper can be made available by increasing the acidity of soils by some means. It has been suggested that copper forms complexes with organic compounds present in the soil and gets fixed by the mineral exchange materials, thereby becomes unavailable to plants.