...Bradley K. Fritz; W. Clint Hoffmann; W. E. Bagley; Andrew Hewitt The objective of this work is to evaluate a proposed test plan for the validation testing of pesticide spray drift reduction technologies (DRTs) for row and field crops, focusing on the testing of ground and aerial application systems...

... off-target movement of spray droplets. Testing protocols are being developed to objectively measure spray drift reduction from a wide range of drift reduction technologies (DRTs) including spray nozzles, sprayer modifications, spray delivery assistance, spray property modifiers (adjuvants...

...W. Clint Hoffmann; Bradley K. Fritz; Jonathan W. Thornburg; W. E. Bagley; Norman B. Birchfield; Jay Ellenberger The development and testing of drift reduction technologies (DRTs) have come to the forefront of application research in the past few years in the United States. DRTs can be spray nozzles...

...Bradley K. Fritz; W. Clint Hoffmann; Norman B. Birchfield; Jay Ellenberger; Faruque Khan; W. E. Bagley; Jonathan W. Thornburg; Andrew Hewitt The EPA’s proposed test plan for the validation testing of pesticide spray drift reduction technologies (DRTs) for row and field crops, focusing...

...Bradley K. Fritz; W. Clint Hoffmann; Yubin Lan The EPA’s proposed Drift Reduction Technology (DRT) low-speed wind tunnel evaluation protocol was tested across a series of modified ASAE reference nozzles. Both droplet size and deposition and flux volume measurements were made downwind from...

...W. Clint Hoffmann; Bradley K. Fritz; Y. Lan The U.S. Environmental Protection Agency (EPA) has initiated the development of protocols for for measuring spray drift reduction technologies (DRTs) related to the application of agricultural protection chemicals. The DRT Program is an EPA-led initiative...