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Peanut Cultivar Response to Fungicide Spray Programs Under Light to Moderate Disease Pressure
W. J. Grichar, Sr., A. J. Jaks, Sr., and M. R. Baring
July 2010
Research
Growers are concerned about the effectiveness of azoxystrobin, pyraclostrobin, and prothioconazole plus tebuconazole spray programs for the control of foliar and soil-borne diseases on different peanut cultivars and their impact on pod yield and quality. Rising production costs and the reduced price for farmer-stock peanuts have forced many producers to reassess the need and number of costly fungicide inputs. Also, little is understood about the role of fungicides on the productivity of peanut cultivars under varying degrees of leaf spot and southern stem rot pressure. The objective of this study was to compare early leaf spot, southern stem rot development, and peanut yield and grade using no-spray and two different fungicide spray programs on several peanut cultivars in the south Texas production area.
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