Irrigation Management and Fertilizer of Peanut (Arachis hypogaea L) with a Drip Irrigation System: Yield, HI and Water Use Efficiency

To investigate the effect of drip irrigation and nitrogen fertilizer rates on the yield of peanuts, split plot randomized complete block design with three replications of irrigation treatments, Including management of irrigation and drip irrigation with 60, 80 and 100% of the water requirements of plants. Minimum amounts of nitrogen fertilizer treatments consisted of 0, 30, 60 and 90 kg.N.ha -1 in crop year 2013 was conducted in Guilan province in the Astaneh Ashrafiyeh city. The results showed that the effect of irrigation and nitrogen fertilizer on biological yield, pod yie ld and seed yield was significant at the one percent level. But their interaction on biological yield, pod yield and seed yield was not significant. in The irrigation treatments, biological yield, seed yield and pod yield in 100% water requirement per pla nt, respectively was with values 6817.2, 2448.2 and 1877.5 kg/ha. Among the different amounts of nitrogen fertilizer, amounts 60 kg N ha -1 fertilizer, maximum biological yield was with an average 7519.8, the maximum amount of pod yield was with 2667 kg/ha, and maximum seed yield with 2012.2 kg/ha. The maximum water use efficiency based on biological yield, pod yield and seed yield with 0.42, 0.14 and 0.11 kg/m 3 , respectively. Among the different levels of nitrogen fertilizer, the maximum water use efficienc y was in 60 kg N.ha -1 for biological yield, pod yield and seed yield with 0.30, 0.11 and 0.08 kg/m 3 , which was higher