Authors : Diaa Fliah Hassan Iman, Azeez Hameed and Thamer Yahya Alshebly
Abstract: Implemented a field experiment to grow the corn crop Zea mays L. of the Autumn season 2016. The experiment, located 15 km South-West of Baghdad on the line along the 33°70’84" North and longitude 44°18’ 75" East, Yusufiyah area, according to design were arranged in a split-plot design with three replications which included major treatment proportions of moisture depletion as added irrigation water after depleting 60, 75, 90% of available water to plant and included secondary plots the depth of the irrigated zone is D1 (0-45 cm) from the beginning of planting to harvest and second depth D2 (0-15 cm) from agriculture to the beginning of the vegetative growth stage, then increase depth of irrigated zone (0-30 cm) to the beginning of flowering, then increase (0-45 cm) to the end of physiological maturity. This experiment is designed to study the effect of the proportions of moisture depletion and the depth of irrigated zone on the plant growth of sorghum and estimate the water consumption of the crop under conditions of Iraq center given I1D1 treatment the highest value of actual Evapotranspiration (ETa) reached to 624 mm. While given I1D2 treatment the highest of water consumption for the second depth reached 567 mm. Calculate reference evapotranspiration by the Penman-Monteith modified equation ant its value 612 mm. Calculate the crop coefficient (K ), field Water use c Efficiency (WUEf ) and crop Water Use Efficiency (WUEc ) I2D2 treatment gave the highest value of WUEc WUEf reached to (1.03, 1.06) kg of grain.mG3, respectively while the I3D2 treatment given lower value to WUEc WUEf reached to (0.82, 0.86) kg of grain.mG3, respectively has been studying factors of growth and yield of plant (plant height, leaf area, leaf area index, yield of grain, 500-grain weight).
Diaa Fliah Hassan Iman, Azeez Hameed and Thamer Yahya Alshebly, 2018. Effect of Moisture Depletion Rates and Irrigated Zone Depth on Water Requirement Growth and Yield of Corn Zea mays L.. Journal of Engineering and Applied Sciences, 13: 10679-10686.