Posted 4/28/2014 16:46 (#3841839 - in reply to #3841782) Subject: Double knock spraying
Tamworth NSW Australia
Do a search for "double knock spraying", should be able to find info about it. Used here to stop/delay roundup resistance, and on hard to kill weeds. Posting from the tractor so can't provide a link for you.
Roundup and then Gramoxone a couple days later
