Effects of zeolite and nitrogen applications at different doses on soil nitrate situation and growth of lettuce (Lactuca sativa L. var. crispy)

Zeolite is a crystal silicate aluminum silicate containing alkaline earth cations. Zeolite reduces the washing of nitrogenous fertilizer because of its high selectivity to ammonia and its ammonium exchange capacity. NH4+, which is given to soil as fertilizer, can be washed with water and prevented from being taken from soil and carried to other places. Turkey is a zeolite commonly found by administering different dosages to be applied to the roots of the lettuce plants in the soil upon movement amount, and to reveal the effects of different nitrogen on plant growth. In the experiment, zeolite application amounts will be applied to the parcels as control (0 kg/ da zeolite), 125 kg/da, 250 kg/da and 500 kg/da. Nitrogen doses N0: control kg / da N, N1: 6 kg/ da N, N2: 12 kg/da N, N3: 18 kg/da N and potassium 8 kg/da K2O and phosphorus 8 kg/da P2O5 will be applied. In the study, lettuce head yield, marketable yield, leaf chlorophyll amount increased as nitrogen doses increased. While the marketable head yield of lettuce plant was 780 gr/pc on average in nitrogen application, the marketable head yield of lettuce was 975, 1172 and 1265 g/pc, respectively, with increasing nitrogen doses. The amount of nitrate in the leaves increased with increasing nitrogen doses applied to the soil. As the zeolite doses increase, the amount of nitrate detected in the soil increases. As the zeolite dose increased, the amount of nitrogen that the plant root could hold increased.