Does anyone have any good advice for keeping a soybean field clean from pigweeds? The location I'm having trouble with is a field with conventional, LL, and RR beans split into blocks. Only the left half of the conventional has a significant pigweed problem, but it is THICK! The main thing was that we were late getting it sprayed, and the herbicide didn't take control much in the conventional. I'm down to about 40' x 380' left to rough, but was wondering if anyone has any methods that work well for mechanical control in 30" rows (pigweed and other probelms as well)? If we had the gaps clear it would be easy enough to go back and hand-clean in the rows, but its tough when you have to pull 7' pigweed plants all throughout the row and the alley. Note: these are split into 20' long, 10' wide plots with a 30" alley at the end of each one, which also gets pretty thick with weeds. I've seriously looked into putting a chainsaw blade on a push-style sickle mower to cut through the stalks, which can get up to tennis ball thickness at the base pretty quickly.