effects of rhizobiums sush inoculation and fertilizer on yield and yield components of chickpea (cicer arietinum) in khorasan-razavi

in order to evaluate the efficiency of inoculation of chickpea seeds with mesorhizobium and application of nitrogen on yield and yield components of chickpea an experiment was conducted in research station of neishobour, khorasan-razavi. the experiment was conducted in randomized complete block design (rcbd) with four replications and 13 treatments including mesorhizobium (swri 1, 2, 3, 6, 9, 12, 13, 14, 15), nitrogen levels (70 and 140 mg/kg from urea source), zinc (25 kg.ha-1 from zinc sulphate source), and the control. results showed that differences of grain and biological yield among treatments were significant (p<0.01). the highest grain yield (1026 kg.ha-1) and biological yield was obtained from swri12 inoculation. that was 7 to 13 percent greater than control for grain yield while for without inoculation was 25 to 40 percent greater. maximum number of nodes was obtained swri12 treatment (12.75 node per plant), while minimum number of nodes was obtained from 70 mg/kg n (3.5 node per plant). maximum nitrogen content was obtained from swri12 treatment (4.5 percent). combine analysis of two years result showed that inoculation treatments increased dry weight, n percent and yield.