Application Technology Research for Asian Soybean Rust Management
By Dr. Richard C. Derksen
USDA-ARS Application Technology Research Unit
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Asian Soybean Rust is a potential threat to soybean production in the United States. As demonstrated in other countries, inadequate protection against this foliar disease can significantly reduce yields. Asian Soybean Rust isnít the threat to young plants in the U.S. as it is in some countries but it could potentially infect taller, more mature canopies that are signficant challenges to treat with fungicides. To help establish guidelines on how to treat the lower portion of mature soybean canopies, field studies were established to characterize spray deposits and coverage produced by several different application techniques. These studies did not include efficacy evaluations but they have demonstrated which techniques could offer the best chance for protecting lower areas of mature soybean canopies.
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