Understanding impact of application parameters on droplet size and herbicide efficacy;
Greg Kruger ( University of Nebraska), Lowell Sandell ( University of Nebraska), Mark Bernards ( University of Nebraska) ($42222). The Project Manager's email is firstname.lastname@example.org.
Key Words: none
Regulations are pending at the EPA that will mandate larger spray droplet sizes to reduce pesticide drift. Little is understood how these larger droplets will impact weed control for herbicides other than glyphosate. The objective of this study is to evaluate different applications parameters which affect spray droplet size on the efficacy of commonly used postemergence herbicides in soybean production. Data and video presentations from this project will be made available to Nebraska soybean growers and pesticide applicators to help them maximize weed control and soybean yield while adhering to future label restrictions. The specific objectives are to: • Measure the impact of droplet size, herbicide concentration and application speed on weed control for five commonly used soybean postemergence herbicides; and • Use the information obtained from the project to develop written and video-based materials to educate Nebraska soybean growers on how to adjust herbicide application parameters to maximize weed control.
This project is funded by Nebraska Soybean Board