Neven Hassoun *(1) , Ali Kinjo(1) Jamil Abbas (1) and Rabeea Ziena (2)
(1). Department of Soil and water, Faculty of Agriculture, Tishreen University, Lattakia, Syria
(2). General Commission for Scientific Agricultural Research (GCSAR), Lattakia.
(*Corresponding author: Neven Hassoun. nevenhassoon80@gmail.com ).
Received: 5/10/2022 Accepted: 21/11/2022
Abstract:
The research was conducted at Sit Kheris Agricultural Station in Latakia Agriculture Center, General Commission for Scientific Agricultural Research (GCSAR) in Syria, during the two seasons 2018 – 2019, The maize variety ZeamaysL.was used. Three levels of irrigation were applied (70, 80, and 90%) of the total water requirement of plant in addition to the control (100%). The experiment excuted according to Randomized Complete Block Design (RCED) with three replicates.CropWat 8.0 was calibrated using data from the seasons 2018-2019 from the 100% treatment in which conditions free of any moisture or fertility stress were applied, the slight changes made to the model during the calibration stage achieved a significant statistical consistency between the calculated values and the values The simulation for both water consumption and productivity of maize. where the values of the coefficient of determination using the CropWat 8.0 model ranged between (82% – 99%), while the average values of the bias errors and the absolute value errors were close to zero, and it achieved good proportions of the square root values. For the average error of RMSE (25% )as an average for the two seasons with respect to the water consumption of maize, and (31%) as the average of the two seasons for the yield of maize, although the value ( 36%) is relatively high, but the agreement was high between the real values and the estimated values using the CropWatmodel according to the Willmot Index (92%).
Key words: yellow corn,water consumption, deficient irrigation, irrigation scheduling, crop growth simulation,
Full paper in Arabic: pdf