2007 Annual Report 1a.Objectives (from AD-416) The objective of this cooperative research agreement is to evaluate spray adjuvants that improve herbicide effectiveness on weed control and reduce drift. 1b.Approach (from AD-416) Investigate various spray adjuvants developed to enhance efficacy and/or reduce potential for off-target drift in randomized plot studies. 3.Progress Report This report serves to document research conducted under a Non-Funded Cooperative Agreement between ARS and GARRCO Products, Inc. Additional details of the research can be found in the report for the in-house project 6402-22000-038-00D, “Development of Pesticide Application Technologies for Spray-Drift Management and Targeted Spraying.” The objective of this cooperative research agreement is to evaluate spray adjuvants that improve herbicide effectiveness on weed control and reduce drift. The cooperator provides sufficient formulated experimental surfactants and drift control adjuvants to allow related research studies to be conducted that will lead to the development of commercial products that provide more efficacious weed control and reduce the potential for off-target drift.