RESEARCHES ON THE EFFECT OF SEWAGE SLUDGE ON THE YIELD AND QUALITY OF VETCH + BARLEY MIXTURE AND SOME SOIL PROPERTIES
Project no. 970 · Status: Kapanmış · 2016
Summary
This research was carried out in 2015 and 2016 in Ege University Faculty of Agriculture in Bornova to investigate the effect of sewage sludge on yield and quality of vetch + barley mixture and some soil properties. The research was carried out in randomized block complete design with four replications and 1, 2 and 3 t/da sludge was applied as well as control and mineral fertilizer application. As a result of the research, It has been observed that the sewage sludge affected the yield, plant height, green herbage yield and crude ash yield of vetch + barley mixture but did not affect the botanical composition, dry matter ratio and yield, crude protein, NDF and ADF ratios. Sewage sludge did not affect the concentrations of Cu, Mn and whereas Zn and Cd concentrations decreased with sludge treatment. In terms of heavy metal content of the soil, slight increases occurred in the amounts of Cu, Mn, Ni, Zn and Cd with sludge treatment. However, it is observed that these increases are below the limit values of the regulation on the use of sewage sludge in agriculture. When the results are evaluated in general, it is concluded that 2 or 3 t / da sludge can be used in agriculture according to the soil analysis results . Key words: Vetch + barley mixture, sewage sludge, mineral fertilizer, yield, soil properties