Influence of potato cultivars on the effectiveness of fungicide control of early blight |
| |
| Authors: | B J Christ |
| |
| Institution: | 1. Department of Plant Pathology, The Pennsylvania State University, 16802, University Park, PA
|
| |
| Abstract: | Three potato cultivars differing in degree of susceptibility to early blight were grown under crop management practices typical for Pennsylvania in 1987 and 1988. There were three experimental treatments: no fungicides, mancozeb with weekly applications initiated at 7 or 8 weeks after planting (early treatment), and weekly applications initiated at first symptoms of disease (late treatment). The no-fungicide control treatment had significantly higher AUDPC values than either treatment with fungicides and the no-fungicide treatment had significantly lower yield in 1987 but not in 1988. Tubers from the no-fungicide control had lower specific gravity. Norchip, the cultivar most susceptible to early blight examined in this study, responded the most in yield increases by the increased fungicide applications. |
| |
| Keywords: | |
| 本文献已被 SpringerLink 等数据库收录！ |
|
