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Uptake of Three Systemic Fungicides by Germinating Soybean Seed. P. N. Thapliyal, Graduate Student, Department of Plant Pathology, University of Illinois, Urbana 61801; J. B. Sinclair, Professor, Department of Plant Pathology, University of Illinois, Urbana 61801. Phytopathology 60:1373-1375. Accepted for publication 7 April 1970. DOI: 10.1094/Phyto-60-1373.

Soybean seed were either nontreated or treated with benomyl [methyl 1-(butylcarbamoyl)-2-benzimidazolecarbamate], chloroneb (1,4-dichloro-2,5-dimethoxybenzene), and DMOC (5,6-dihydro-2-methyl-1,4-oxathiin-3-carboxanilide) at 0.125, 0.25 or 0.5 g/100 g (2, 4, or 8 oz/100 lb.). Uptake was demonstrated by bioassay of extracts from germinating seed using an isolate of Rhizoctonia solani sensitive to the three fungicides. Benomyl, or a compound related to it, becomes localized in the cotyledons.