Wednesday, November 15, 2006

Development of a Yield Loss Prediction Model for Asian Soybean Rust.

Joseph Omielan1, Saratha Kumudini1, and Claudia V. Godoy2. (1) UK Plant & Soil Sciences, 1405 Veterans Drive, Lexington, KY 40546-0312, (2) Embrapa - Soja, Rodovia Carlos Joao Strass, Caixa Postal 231, Londrina - PR, Brazil

Soybean rust (SBR) causes accelerated defoliation.  The impact on yield depends on the extent of the defoliation as well as the growth stage when it occurs.  Currently available models based on % leaf loss have not been fine tuned for late reproductive development.  These models are also less accurate than using a measure of the remaining LAI.  The use of NDVI to estimate remaining green leaf area is a promising tool.  Progress to date will be reported.

Handout (.pdf format, 86.0 kb)