As Soybean varieties with new, Roundup Ready 2 Yield technology will become widely available for farmers during 2010. In yield trials conducted across the US, the average yield mar The causal agent of Cercospora leaf blight and purple seed stain, known to produce a latent infection with little or no symptoms that are manifest generally only late in the season. Field trials will include irrigated and non-irrigated management treatments.Trials will be conducted at several research sites and in the greenhouse. Measurements will be made on crop development, disease development, photosynthesis and soybean yield.