1. Compare the knock-down efficacy of group 14(G) herbicides when mixed with glyphosate and Gramoxone
2. Compare the efficacy of Voraxor and Terrad’or alone and in a glyphosate tank-mix.
The trial was conducted 5km North-West of York, WA. The site was farmer sown to oats and was at the jointing stage at the time of spray applications. The site was chosen for the heavy wild radish
population, which were at the 6-leaf stage at application. This is later than the optimal spaying time in a knockdown situation, which was decided upon to push the limit of the Group- 14 (G) herbicides. The rates of Glyphosate and Gramoxone 360 were decreased from their normal recommended rates in order to highlight the efficacy of the Group G herbicides.