Study of the effects of number of irrigation intervals and different levels of compost on Morphophysiological characteristics and grain yield in two cultivars of lentil (Lens culinaris Medik.)

In order to study the effects of number of irrigation intervals and different levels of compost on Morphophysiological characteristics and grain yield in two varieties of lentila trial was carried out in a field located in Badder Abad village, Saqez at 2015 season year. Experimental design was split split split. The experimental treatments consisted of irrigation at three levels (control, one round and two rounds) in the main plot, compost in three levels (control, 15 and 30 tons per hectare) in sub plots and cultivars (Bile Savar and Kimia) in sub sub plots, which were evaluated in three repetitions. Results showed that irrigation interval effect on all traits was significant. The effect of compost and interactions of cultivar × irrigation on all traits except plant height was significant. Also, the effect of cultivar on all traits was significant except for aerial weight and shoot nitrogen percentage. Interaction of irrigation × compost level was significant on all traits except aerial dry weight and shoot nitrogen percentage. Finally, the effect of cultivar × compost on plant height, dry weight and shoot nitrogen percentage were significant. In this research, twice the level of irrigation in Bilesavar and Kimia cultivars increased grain yield compared to non-irrigation treatment, respectively, 64.84% and 61.22% respectively. Also, two irrigation intervals with 30 t/ha compost treatments had the highest plant height (43.87 cm), chlorophyll content (85.81), Root dry weight (5.24 g), nitrogen root percentage (1.95), number of root nodes (15.83) and grain yield (2.90 t/ha).