Aquacrop model application for full irrigated maize genotypes production in Semearid area, Duhok-Iraqi Kurdistan

المؤلفون المشاركون

Abd Allah, Zeravan Arif
Khalaf, Akram Abbas

المصدر

مجلة جامعة دهوك

الناشر

جامعة دهوك

تاريخ النشر

2016-06-30

دولة النشر

العراق

عدد الصفحات

11

التخصصات الرئيسية

العلوم الزراعية

الملخص الإنجليزي

Simulation models that clarify the effects of water and crop genotype on grain yield and biomass of crop, are useful tools for improving farm level water management and optimizing water use efficiency and obtaining high production.

The case study was conducted during spring season in 2014 and 2015 at Duhok governorate to assess and evaluate the utilizing of the AquaCrop model in predicting the grain yield and final above dry biomass, and also comparing results of simulated and measured yield and biomass of processing three maize genotypes, with full irrigation .in semi-arid region of Duhok Iraqi Kurdistan.

In this research, the potential of Aqua Crop model in full irrigation practice for maize genotypes for spring seasons, were studied.

The results of simulated grain yield and final above ground biomass were 7.92 and 15.53 t/ha;9.75,19.94;11.94,and 22.24t/ha for Sangaria, Symanni, and Synthetic-1 genotypes respectively while measured grain yield and final above ground biomass for same maize genotypes were 7.82,18.42;9.66,22.54, and12.59,23.76 t/ha for first season(2014),but for the second season the results of same mentioned genotypes regards to simulated were5.79,12.10;5.13,12.51 and 6.23, and 13.62 t/ha while measured grain yield and final above ground biomass were 5.93,12.90;5.77,14.81, and6.53 and 15.10 t/ha .The difference was more obvious between grain yield and biomass of two seasons (2014 to 2015), the production parameters of first season were much higher than the second one and this difference is related to critical period of water stress and delaying irrigations which led to a negative effect on grain yield and dry biomass of different maize genotypes in second season.

The results of reliability indices which determined for second year for RMSE, d, E, ME ,and CRM, for water moisture content were 43.36mm, 0.946, 62.8%, 2.059, 0.065, and for canopy cover were 9.17, 0.973, 99.6%, 19.645, -0.015; 11.843, 0.961, 96.3%, 18.469, -0.093; 9.067, 0.971, 98.3%, and - 0.04, for maize genotypes of Sangaria, Symanni, and Synthetic-1 respectively, and 1.125 to 1.985 t/ha, 0.941 to 0.953, 52.8 to82.6%,4.632 to11.547, 0.199 and-0.494;1.582 to2.407 t/ha,0.878 to0.937,57.9 to 90.4%, 20.581 to 4.541,and 0.337 to -0.075; 1.913 to 2.207 t/ha, 0.896 to 0.96, 65.7 to 90.4 %, 9.89 to 17.862, and 0.678 to -0.056 for grain yield and final above ground biomass respectively and for each maize genotype of Sangaria, Symanni andSynthetic-1, respectively ,and.

The model provided excellent simulations of canopy cover, grain yield, above ground biomass and water productivity

نوع البيانات

أوراق مؤتمرات

رقم السجل

BIM-797931

• APA
• MLA
• AMA