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Response to Emerging Threat: Soybean Rust
Dr. Arv Grybauskas is the PI. Soybean rust was detected in Maryland for the first time in 2008. Soybean rust appeared in Maryland too late in the growing season to produce any direct significant losses. The appearance of the disease illustrated that risk of this disease is not zero and that monitoring can pay significant dividends.
Fungicides registered in anticipation of soybean rust were evaluated under Maryland cropping systems and conditions for use on other diseases as well as for the management of soybean rust. In the absence of soybean rust, positive and negative yield responses were obtained in 2006 and 2007 with several products under conditions favoring moderate brown spot and Cercopora purple stain development as well as under low and no disease conditions. Results from 2008 trials will continue to improve our understanding of how these products fit in our production systems even in the absence of soybean rust.
Hundreds of growers and key individuals in County Extension, Experiment Station facilities, crop consultants and Agribusinesses were provided with educational materials and kept informed of best management practices and status of rust via publications, websites, newsletters, winter presentations, field-day presentations and face-to-face contacts. Grower profitability was improved through reduction of unnecessary fungicide applications.
For more information, contact Dr. Arv Grybauskas
Last updated: 04/9/2009
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