Vermikompostun Farklı Tekstürlü Toprakların Agregat Stabilitesi, Hacim Ağırlığı ve Bazı Kimyasal Özelliklerine Etkisi

Abstract

This study was conducted to investigate the effects of vermicompost treatments on physical and chemical characteristics of two soils with different textures. Experiment was conducted in 30 pots with two different soil types, 5 vermicompost doses and 3 replications. Vermicompost doses were placed into 5 kg pots in dry bases and soil-vermicompost mixtures were incubated under laboratory conditions for about 90 days. Vermicompost treatments had significant effects on organic matter content, pH, electrical conductivity (EC) and cation exchange capacity (CEC) of both soils. Increasing organic matter contents and salinity values were observed with increasing vermicompost doses. As compared to the control treatment, soil salinity greatly increased with the greatest vermicompost dose (16 t da-1). With vermicompost treatments, pH of acidic loamy soils increased and pH of clay soils with relatively high pH levels decreased. Since vermicompost has high organic matter content, it increased soil CEC values significantly. There were significant positive correlations between organic matter content and CEC values of the soils. Vermicompost treatments had positive effects also on soil physical characteristics, increased aggregate stability (AS) and decreased bulk density (BD) of the soils. While vermicompost treatments increased aggregate stability of loamy soils remarkably, such effects were not remarkable in clay soils.