need help with Rdp. resistant weeds
We're thinking that we've got a field that has Rdp. resistant waterhemp. Sprayed a week ago and some are still green and look healthy. They were 12-16 in. high and we used 32 oz. of Touchdown with speedway as a sticker. The weather was near perfect all day high in the upper 80's and sunny with a little wind. Field next to it sprayed with same tank mix got a good kill. What do you recommend we do if these weeds don't die? I'm going to say we got less than 33% complete kill in 80 acres.
Re: need help with Rdp. resistant weeds
three-tenths of an oz of First Rate/acre along with 32 to 40 oz of generic glyphosate plus. The sticker in glyphosate plus is supposed to be enough of a surfactant but I think some NIS helps to insure the kill