CROP WATER PRODUCTIVITY AND IRRIGATIONCROP WATER PRODUCTIVITY AS  INFLUNCEDBYMAIZE(Zea mays  L.) GENOTYPES AND IRRIGATION QUALITY USING AQUACROP MODEL

AKRAM ABBAS KHALAF; MURAD JAN M. M. NOORI

doi:10.26682/avuod.2019.22.1.3

AKRAM ABBAS KHALAF Dept. of Soil and water science, College of Agriculture, University of Duhok,Kurdistan Region –Iraq
MURAD JAN M. M. NOORI Dept. of Soil and water science, College of Agriculture, University of Duhok,Kurdistan Region –Iraq

DOI: https://doi.org/10.26682/avuod.2019.22.1.3

Keywords: AquaCrop model;, Irrigation water quality;, Crop water productivity;, , irrigation crop water productivity;, , maize genotype;

Abstract

The effects of different irrigation water qualities and maize genotypes on the water-yield relationships were studied by using AquaCrop model. The study area is located in Duhok city with latitude, longitude and elevation of 36°51'42.5"N, 42°51'57.6"E and 473m (a.m.s.l), respectively. A drip irrigated maize (Zea mays L.) field experiment was conducted to test the goals of the research project for the growing season 2015 and irrigation qualities of Khanic surface, Ground water and Bitter water with maize genotypes of Sangria, Neroz, and IK58 x un 44052 maize genotypes were used in the study water-yield relationships such as crop water productivity (CWP), irrigation crop water productivity (ICWP)for grain yield was calculated. The most important results of this study as follow: The (CWP_GY) and (ICWP_GY) were varied depending on (IWQ) and their qualities. The highest values were for Khanic water and the lowest values obtained under bitter water, the values of CWP_GY and ICWP_GY under the effect of maize genotypes were the highest values for IK58 x un 44052 and the lowest value obtained under sangria. The interaction between the effects of irrigation water qualities and Maize genotype for both CWP_GY and ICWP_GY showed the greatest amount were obtained under I₁G₂ ; meanwhile the lowest values was obtained from I₃G₁,The coefficient of determination (R²) for the measured and simulated Crop Water Productivity (CWP) and (ICWP)of yield parameter, grain yield, using AquaCrop model were equal to 0.9978-0.998 respectively under the effect of studied factors of irrigation water qualities and Maize genotypes.

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