Summary
Field plots of Tifton loamy sand were treated with various soil pesticides and left exposed or covered with biodegradable paper or black polyethylene film mulch. Cucumber, squash, muskmelon, sweetcorn, and polebean were planted in one or more experiments. Trickle irrigation under the film was used in several tests. Isolations were made from roots of all crops except sweetcorn, and the fungi most commonly isolated wereFusarium oxysporum, Pythium spp.,F. solani, F. roseum, andRhizoctonia solani from cucurbits andF. solani andF. oxysporum from polebean. Significantly fewer fungi were isolated from plants grown in soil treated with DD-MENCS (20% methyl isothiocyanate +80% chlorinated C3 hydrocarbons) or methyl bromide-chloropicrin (2:1) (MBC) than from controls, and populations ofPythium spp.,F. solani, andF. oxysporum, were reduced in soil. Sodium azide, sodium azide +ethoprop or carbofuran, and sodium methyl dithiocarbamate were less effective than DD-MENCS and MBC.
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Nematologist, ARS, USADA; Soil Scientist, ARS, USDA; and Associate Professor, Department of Entomology, University of Georgia, respectively, Coastal Plain Station, Tifton, Ga., 31794, United States of America
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Sumner, D.R., Johnson, A.W., Jaworski, C.A. et al. Influence of film mulches and soil pesticides on root diseases and populations of soil-borne fungi in vegetables. Plant Soil 49, 267–283 (1978). https://doi.org/10.1007/BF02149736
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DOI: https://doi.org/10.1007/BF02149736