Akademik Veri Yönetim Sistemi
Toprak Su Dergisi, cilt.10, sa.2, ss.88-93, 2021 (Hakemli Dergi)
In this study, effect of tobacco waste (TW) application on soil structural parameters and water holdingcapacity were determined in a clay field. Tobacco waste was applied into a clay soil surface (0 - 15 cm)with 4 different rates (0, 2, 4 and 6%) and three replications in a randomized plot design. After eightmonths, changes in soil organic carbon content, bulk density (BD), total porosity (F), gravimetric (W) andvolumetric (θ) water content, air filled porosity (Fa) and relative saturation (RS) values were determinedin clay soil for each treatment. TW application rates significantly increased organic C contents and Fvalues while they significantly decreased bulk density values of the clay soil. Although the W valuessignificantly increased over the control, the θ and RS values decreased with increasing the F valuesby the application of TW. The high application rates of TW (4 and 6%) increased moisture content atpermanent wilting point (PWP) more than at field capacity (FC). Thus, AWC values in higher rates of TWwere lower than the AWC values in 2% rate of TW and control treatments. Increasing Fa is importantfor plant root respiration and microbial activity especially in the clay soils. The high rates of TW increasedF values but decreased the AWC of clay soil over the control treatment.