The effects of vermicompost application on the nutrient elements contents of lettuce plant during different incubation periods

In this study, it was aimed to investigate the effects of vermicompost application with different mineralization ratio on the nutrients contents of lettuce plant. For this, vermicompost were used at 4 doses (0, 50, 100 and 200 kg da-1), and left to the incubation for 0, 30 and 60 days. This study was carried out in 3 replications according to randomized block trial design in greenhouse conditions and Yedikule lettuce variety was used as a trial plant. In experiment; in order to be able to plant whole lettuce seedlings on the same day, firstly vermicompost materials applied to the soil on 60 days incubations, then on the 30th and 0th day were mixed in the soil, and the lettuce seedlings were planted in the pots on the same day. At the end of the 9-week growing period, the plants were harvested. The harvested lettuce plants were analyzed for N, P, Ca, Mg, Fe, Mn, Zn, Cu, S and B. The effects of different incubation times on the N, P, K, Ca, Mg, S, Zn, Fe, Mn, Cu, B contents of the lettuce plant were significant. As a result of the experiment; it was determined that the Ca and Mg contents increased during incubation periods, while P, Zn and B contents decreased. Also, it was determined that the K, S, Mn and Cu contents of lettuce plants decreased to 30th day but increased at 60th day; the N and Fe contents of the plants increased until 30 days, but decreased at 60 days. The effects of vermicompost applications on the N, P, K, Mg, S, Fe, Mn, Zn, Cu and B contents of lettuce plants were found to be statistically significant. The effect on Ca content was insignificant. Depending on increasing vermicompost applications; it was determined that the N, P, K, Mn, Zn, Fe and S contents of lettuce plants increased and Mg, Cu and B contents decreased