تاثیر کاربرد زئولیت روی عناصر معدنی و خصوصیات مورفولوژیکی عدس در شرایط کمبود آب

The objective of this study was to determine the effect of different rates of zeolites and drought stress on some Morpho-Physiological traits in Lens culinaris. Factors were considered as two levels of irrigation (irrigation at field capacity (FC) and 50 % (FC) which applied in two-leaf stage and four levels of zeolites (0, 10, 20, 30 ton/ha). Before planting, zeolite was added to the soil in deepness of root development. Results of ANOVA showed the significant effect of irrigation and zeolite based on the contents of N (%) and the significant effect of irrigation for P (%) and K (%). The results indicated that water deficit stress significantly decreased NPK (%), whereas the application of zeolites compensated the negative effect of drought stress, especially in high rates of polymer application (30 ton/ha). The highest contents of N (%1/38) and P (%2/51) and the lowest contents of N (%1/07) and P (%0/18) of leaf were obtained from application of 30 ton/ha and 0 ton/ha zeolite, respectively. Also, water deficit stress significantly decreased leaf length, stem length, whereas the application of zeolites compensated the negative effect of drought stress, especially in high rates of polymer application (30 ton/ha). The highest the stem length (19/95 cm) was obtained from application of 30 ton/ha zeolite. These findings strongly suggested that the irrigation intervals of lens could be increased by application of zeolite. The highest NPK percent were obtained from field capacity irrigation.