I've got a good handle on the waterhemp this year, but with all the wet weather, I'm again seeing cockleburs break through in lower, wetter areas where the beans aren't canopied.  I'm going to spray with Rup again and it'll kill them, but wonder what options there might be for a residual besides Classic? I don't have a high ph but I've gotten away from using it in the Valor & Fierce and maybe this is why I'm having the escapes?  Currently have Zidua down for residual and seems to have no affect on the burs, but it seems to be great on the waterhemp.  Most places are canopied good and won't have any problems, just the wetter-thinner area that's the issue.  Thanks.