Effects of Chemigation with Chlorothalonil and Diniconazole on Soil Fungi and Pod, Peg, and Stem Diseases of Peanut

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Abstract
Chlorothalonil and diniconazole were applied to peanut in microplots through irrigation water with hand sprinklers or by conventional sprays for control of leaf spots. Soil was infested with Sclerotium rolfsii or Rhizoctonia solani anastomosis group 4 (AG-4) or was noninfested. Foliage disease caused by Cercosporidum personatum, populations of R. solani AG-4 in soil, and the number of lesions on pods, pegs, and stems were usually reduced by treatments with fungicides (compared with no fungicide) but there were usually no different between application methods. Chlorothalonil reduced the severity of pod rot in soil infested with S. rolfsii.