Hart Field Site: Sarah Noack.
Bill Gordon Consulting: Bill Gordon.
Stubble retention can reduce the efficacy of certain pre-emergent herbicides.
Trials studied different herbicides and rates with varied spray application strategies.
This project aims to improve pre-emergent herbicide efficacy depending on the height and volume of stubble.
In the field
Trials will cover efficacy of pre-emergent herbicides (chemistry and rate), manipulating spray application (water rate, droplet size, time of application, adjuvants and travel speed), and spray nozzles (angle, position, orientation and spray patterns).