Effect of different levels of irrigation, planting density, Planting pattern in drip irrigation on yield, yield components and water use efficiency of corn

present study was performed in order to determine effects of different amounts of irrigation water, plant density and planting pattern on yield, yield components and water use efficiency (WUE) of corn, variety single cross 700 (700KSC) using drip irrigation systems (tape) , in the research Station of Islamabadgharb in two consecutive years (2011-2012). The project was in the form of split block factorial experiment design That the vertical bar, was irrigation factor consists of four irrigation treatments of 50, 75, 100 and 125 percent evapotranspiration corn, And horizontal bars, were factor planting pattern include two planting pattern of one and two-row And plant density consists of three density of 65, 75 and 85 thousand plants per hectare and was implemented as factorial with three replications. The results showed that amount of irrigation and plant density at 1% level and their interactions at the level of 5%, created significant difference on water use efficiency. 50% treatment of the water requirement of corn with 0.8 kilograms per cubic meter and 100% treatment of the water requirement of corn with 1.25 kilograms per cubic meter, respectively, had the lowest and highest water use efficiency. Different amounts of irrigation water created difference at 1% level in yield So that 125% treatment of evapotranspiration of corn, with 11320 kg per hectare had highest yield and 50% treatment of evapotranspiration of corn, with 3442 kg per hectare, had the lowest yield also yield was influenced by the density and planting pattern and had significant Differences at 1% level. So that the density of 65 thousand plants and planting pattern one-row respectively with 6596 and 7894 kg per hectare had the lowest yield and density 75 thousand plants per hectare and planting pattern two-rows respectively with 8809 and 8195 kg per hectare had the highest yield