Can contemporary wheat models simulate grain yield accurately in low-potential environments?
Material type:
TextSeries: CIMMYT NRG-GIS Series ; No. 00-01Publication details: Mexico, DF (Mexico) CIMMYT : 2000ISBN: - 970-648-47-1
- 1405-7484
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| Look under series title Wheat diseases in Ethiopia | Look under series title Simulating nutrient stress effects on phenological development in maize | Look under series title Use of linear regression and a correlation matrix to evaluate CERES3 (Maize) | Look under series title Can contemporary wheat models simulate grain yield accurately in low-potential environments? | Look under series title Asian Regional Maize Workshop, 4 | Look under series title Este es el CIMMYT | Look under series title An agro-climatological characterization of bread wheat production areas in Ethiopia |
The accuracy of eight wheat simulation models was compared for mean simulated yield. The error of prediction generally increased with mean yield. This suggests that, for models designed to simulate yield in low-potential environments, the published errors determined in high-potential environments are not directly applicable for lower yielding environments. Underestimation of wheat yield under stressed conditions was a common problem for many models. Such shortcomings need to be addressed before the models can be expected to exhibit low errors that are commensurate with the low yields. Indeed, new models may need to be derived for accurate simulation at very low yields involving isolated plants
English
0010|AGRIS 0101|AL-Wheat Program
Jose Juan Caballero
CIMMYT Publications Collection