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Control of American Chestnut Blight by Trunk Injection with Methyl-2-Benzimidazole Carbamate (MBC). Richard A. Jaynes, Associate Geneticist, The Connecticut Agricultural Experiment Station, New Haven 06504; Neal K. Van Alfen, Assistant Plant Pathologist, The Connecticut Agricultural Experiment Station, New Haven 06504. Phytopathology 64:1479-1480. DOI: 10.1094/Phyto-64-1479.

Significant reduction in growth of Endothia parasitica, a phloem canker organism, in American chestnut trees was obtained by pressure-injecting trees with MBC (methyl-2-benzimidazole carbamate) both before and after they were artificially inoculated. Results suggest this material may be used to protect specimen, blight-susceptible chestnut trees. Benomyl [methyl-1-(butylcarbamoyl)-2-benzimidazole carbamate] in aqueous suspension was taken up slowly by the tree and it did not restrict growth of E. parasitica.

Additional keywords: Endothia parasitica, Castanea dentata, pressure injection, benomyl, systemic fungicide.