effect of irrigation times and application of chimical and organic fertilizer on the morphology and yield of wheat var. chamran

the effects of drought stress and different chimical and organic fertilizers systems were studied on wheat yeild. this experiment was conducted as split plot based on completely randomized block design (crbd) with four replications during 2009-2010. irrigation treatment was in i1(irrigation disruption from anthesis stage) and i2 (spike formation to harvesting) and i3 (full irrigation ,control treatment), and fertilizers treatment included chemical fertilizer (npk), manure fertilizer(m), biological fertilizer(b), biological fertilizer + manure fertilizer(mb) at the beginning of plantation.the effect of disruption of irrigation &  fertilizer was significant (%1) on plant height and grain yield. interaction between irrigation and fertilizer on grain yield was significant at the 5% level. the highest yield of 5304 kg ha the i3 in the treatment and the lowest yield of 3413 kg per hectare in i1 was treated. the maximum yield was obtained 5081 kg/h from mb and minimum level was belong to b treatment with  3142 kg/h. therefore, application of biological fertilizer plus  manure fertilizer was recommended for producing high wheat yield (cv. chamran) in khuzestan province, even under drought stress.