BACKGROUND
Stubble loads have increased in recent years with increases in stubble retention and crop yields. This can have an effect on the efficacy of certain pre-emergent herbicides.
Start:
July 2014
Finish:
June 2017
Project participants
Hart Field Site: Sarah Noack.
Bill Gordon Consulting: Bill Gordon.
The problem
Stubble retention can reduce the efficacy of certain pre-emergent herbicides.
The research
Trials studied different herbicides and rates with varied spray application strategies.
Research aims
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).