It has been shown that broadleaves with a hairy surface (velvetleaf otherwise known locally as cottonweed) are poorly controlled if sprayed after dark when the pores of the leaves close up. We learned that if this was one of out target weeds, we did not spray after the sun went down. Point is, there are plants that it does make a difference if certain conditions are not met.
Generally speaking, roundup works best on grasses, next best on broadleaves, and poorest on woody type plants. If you have woody type plants something like Remedy will be much more successful. Maybe too successful because if you have a desirable tree nearby it may be a gonner too so a person has to weigh the benefits of killing one thing against the risk of killing something you don't want to.
Remedy along with 2,4D (can buy that mix commercially at a higher cost known as Crossbow) is an excellent brush control fence row chemical. Also cut stumps. But my oh my. Better not have a cotton crop within 10 miles. Cotton is ultra sensitive to 2,4,D and 2,4D is volatile. A person needs to pay attention to where he uses anything with 2,4D (excellent broadleaf killer) and I will often use just straight Remedy if there is any potential of off target damage.
Last edited by snrub; 11/07/18 09:57 AM.
