Study the Effects of Different Levels of Irrigation Interval, Nitrogen and Superabsorbenton Yield and yield component of peanut

ABSTRACT: In order to study the effect of Irrigation intervals, N fertilizer management and application of superabsorbent on yield and yield components of peanut (Arachishypogaea L.), An experiment in split factorial format based on randomized complete block design with three replications, during 2012 year in AstanehAshrafiyeh (north of Iran) was conducted. Factors of experiment include 3 level of Irrigation interval (0, 12, 6 days) as main plot and 3 level of N fertilizer (0, 40, 80 kg/h) and 2 level of superabsorbent (0, 200 kg/h) as subplot. Result showed that Irrigation interval and N fertilizer on all measured trait including seed yield, pod yield, number of seed per shrub, RWC and SCMR was significant at 1% probability level. Application of superabsorbent was significant on seed yield, pod yield and RWC at 1% and SCMR at 5% probability level. Interaction effect of Irrigation ×N and Irrigation and superabsorbent were significant on all measured trait at 1% probability level. Interaction of N fertilizer and superabsorbent was significant on pod yield and RWC at 1% probability level and the interaction of Irrigation interval and N fertilizer and superabsorbent was significant on pod yield and RWC at 1% and SCMR at 5% probability level. With attention to results of experiment, with increase nitrogen application up to 80 kg/h and decrease the Irrigation Interval up to 6 days and application of superabsorbent, all studied traits were increased.