2010 Annual Report 1a.Objectives (from AD-416) To identify the Bt corn technology and its associated refuge system that provides the most economic benefit to producers. 1b.Approach (from AD-416) Data will be collected from multiple field tests located in Arkansas, Louisiana, and Mississippi. All production costs and operations will be recorded for each site. Impact of corn techonologies on insects and yelds will be collected. An economic analysis will be conducted to compare net return above treatment costs of each Bt corn technology and its associated refuge system. 3.Progress Report This project was established April 2010 as a replacement for project 6402-22000-047-29S.