Northeast Research and Demonstration Farm
A yield performance study was conducted at the ISU Northeast Research and Demonstration Farm to compare 11 Roundup Ready® soybean varieties, and 10 conventional soybean varieties, one of which is a soybean variety grown for the organic market. Roundup Ultramax was applied on the Roundup Ready® varieties, and a conventional herbicide program was used on the commercial soybean varieties to evaluate weed control and grain yield.
Iowa State University
Pecinovsky, Kenneth T., "Roundup Ready® and Conventional Soybean Yield Trial" (2002). Iowa State Research Farm Progress Reports. 1636.