A simulation model approach for relating effective climate to winter wheat yields on the Great Plains
✍ Scribed by Daniel W. Bridge
- Publisher
- Elsevier Science
- Year
- 1976
- Weight
- 523 KB
- Volume
- 17
- Category
- Article
- ISSN
- 0002-1571
No coin nor oath required. For personal study only.
✦ Synopsis
ABSTRAC~
Bridge, D.W., 1976
. A simulation model approach for relating effective climate to winter wheat yields on the Great Plains. Agric. Meteorol., Kharkov winter wheat yields at four locations, spanning over 12 ° latitude on the Great Plains, were related to climatic parameters. For each location a stepwise multiple regression technique was used to relate winter wheat yields to climatic parameters generated by a constant root zone (CRZ) water budget and an expanding root zone (ERZ) water budget. Compared to those for the CRZ model, the regressions using the ERZ model parameters "explained" an average of 12% more of the variation in winter wheat yield. Regressions employing only potential evapotranspiration and precipitation variables "explained" an average of 63% less of the variation in winter wheat yield compared to the regressions formed with the ERZ model parameters.