| Popis: |
Farmers have often observed that peanut (Arachis hypogaea L.) produces better on some soils than others, even when receiving the same management practices. This study was conducted to determine the validity of relating peanut yields to a soil classification system in the southeastern US. On-farm peanut experiments conducted from 1972 to 1988, consisting of 164 farms from seven counties of Alabama USA, were compiled for analysis. All experimental sites were identified by soil series, surface-soil texture, and slope. Yields were significantly affected by year and soil series, but yields were not significantly different based on a fertility capability classification system. Surface-soil texture and slope accounted for only a very small portion of yield variations. Soil series appeared to be a more reasonable means for predicting yields, although it may need to be modified to account for the influence of depth to an argillic horizon. |
