Abstract
Chlorothalonil and tebuconazole were applied to peanut (Arachis hypogaea) through a centerpivot irrigation system (chemigation), a pivot-mounted underslung boom, or ground sprays. Populations of Rhizoctonia solani AG-4, R. zeae, and Sclerotium rolfsii in soil at midseason and at digging were variable and were not influenced significantly by chemical treatment or application method. Chemigation with tebuconazole, but not with chlorothalonil, reduced populations of total fungi in soil at digging, and in one test all applications of tebuconazole reduced populations of binucleate Rhizoctonia CAG-3
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