Calibration and validation of AquaCrop for deficit and full irrigation of tomato

作     者：Ransford Opoku Darko Yuan Shouqi Yan Haofang Liu Junping Agnes Abbey 

作者机构：Research Centre of Fluid Machinery Engineering and TechnologyJiangsu UniversityZhenjiang 212013China Department of Agricultural EngineeringUniversity of Cape CoastCentral RegionCape CoastPMB Ghana Faculty of Science and ForestryUniversity of Eastern FinlandJoensuu 80101Finland 

出 版 物：《International Journal of Agricultural and Biological Engineering》 (国际农业与生物工程学报（英文）)

年 卷 期：2016年第9卷第3期

页      面：104-110页

核心收录：

学科分类：09[农学] 0902[农学-园艺学] 090202[农学-蔬菜学] 

基　　金：the National Natural Science Foundation of China(number 51309117) the Program for National Hi-Tech Research and Development of China(863 Program,number 2011AA100506) This study has also been financially supported by the Natural Science Foundation of China(51509107) Natural Science Foundation of Jiangsu province(BK20140546) the Scientific Research Foundation for the Returned Overseas Chinese Scholars,State Education Ministry(2015,No.311) the Agricultural machinery of Sanxin project in Jiangsu province(NJ2014-10) Jiangsu University Senior Professional Scientific Research Fund Project(14JDG015,14JDG017) 

主　　题：AquaCrop irrigation calibration validation tomato water requirements yield 

摘      要：The objective of this study was to calibrate and test AquaCrop for tomato(Lycopersicon esculentum)grown under deficit and full *** field experiments were carried out in the tropical humid coastal savanna zone in Mfantseman district of the Central Region of *** from the first experiment were used to calibrate the model while data obtained from the second experiment were used to validate the *** calibrated AquaCrop model concentrated on its performance to predict crop yield and seasonal crop water requirement(ETc).Four treatments were investigated:T1(no irrigation after plant establishment),T2(50%ETc restoration),T3(100%ETc restoration up to beginning of flowering,then 50%ETc restoration)and T4(100%ETc restoration).The results revealed that AquaCrop was able to simulate the yield of tomato for T2-T4 with the exception of Treatment T1 which was simulated with the highest deviation of 45.1%.On the other hand,the model was able to simulate the seasonal water requirements to an appreciable degree in both *** must be pointed out that the calibration of AquaCrop suffered from a lack of data on the progress of crop canopy cover which is a very important parameter used in developing the model.