Organizing Committee


Poster Presentations


Poster Presentations


Strobiluron fungicide greening effects on soybeans in Alabama, 2006: Application timing and desiccants

Presenter: D. P. Delaney

All authors and affiliations: D. P. DELANEY (1), E. J. Sikora (2), M. A. Delaney (2), and K. S. Lawrence (2). (1) Department of Agronomy & Soils, Auburn University; and (2) Department of Entomology & Plant Pathology, Auburn University

Many soybean fields in Alabama where strobiluron fungicides had been applied to prevent Asian soybean rust (ASR) experienced retention of green leaves long after pod maturity in 2005. Many soybean producers delayed harvest until frost or weathering removed these leaves, leading to seed deterioration and shattering losses. Others combined through fields that had large amounts of green leaves and stems but at greatly reduced speeds and with increased fuel and machinery costs and foreign material dockage. Desiccant materials may dry up these green leaves and stems for more timely and efficient harvest but have been little used in Alabama soybean production. A series of experiments was conducted across the state in 2006 to investigate the causes of this greening effect and of harvest aid treatments to alleviate its effects. Likely due to a 40-year record drought, strobiluron greening effects were much reduced in 2006. In only one of three locations were greening differences noted between strobiluron application timings and seasonal rate treatments. Results of strobiluron fungicide treatments on yields, as well as the results of desiccation timing and harvest aid materials, will be discussed.

View Poster                                         Back to Poster Presentations