Yield Loss Prediction Tool for Field-Specific Risk Management of Asian Soybean Rust

Project Updates - Brazil March 2007

Brazil - March, 2007 (Joe Omielan) - Project Update

Dr. Cláudia Godoy sent some photos of the plots in Londrina.

Photo showing  soybean plants with heavy defoliation as a result of extensive SBR infection established during R1.

SBR became established in this treatment at R1 and has resulted in extensive disease and defoliation by March 13.

Photo showing healthy soybean plants with a dense canopy.

This treatment has been protected by fungicides and manually defoliated weekly to match the leaf area in the plot shown in the first photo.  The photo was taken before the March 13 defoliation.

Photo showing soybeans plants with a diminished canopy after manual defolition to match the infected plants from the first photo.

This is the same plot after defoliation to match (mimic) the leaf area remaining in the SBR-R1 plot shown in the first photo.

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