EffectofHexaconazoleapplication foliar anddifferent irrigation regimesonquantitative , qualitative and biochemicalcharacteristics in grain corn (Zea Mays L.) K.S.C 704.

In order to investigate the effect of hexaconazole foliar application on yield and biochemical characteristics  of grain corn of KSC704 cultivar under cut irrigation conditions, an experiment was conducted as split plots in a randomized complete block design with three replications. The main treatments of the experiment are: S0 = Normal irrigation, S1 = Cut Irrigation in stem stage, S2 = Cut Irrigation at flowering stage, S3= Irrigation interruption in seed filling stage and sub-treatments were including: M0= control (not applicable), M1= 25 mg / l , M2 = 50 mg / l. The results showed that cut irrigation reduced grain yield but hexaclonazole foliar application increased the following trait. Hexaclonazole foliar application of 25 and 50 mg / l increased the antioxidants superoxide dismutase, catalase and peroxidase and decreased the biomarker of malondialdehyde, di tyrosine and dihydroxyguanosine degradation significantly. And through hormonal changes increased drought tolerance in corn.