Posted 12/2/2022 11:56 (#9961451 - in reply to #9961413) Subject: RE: fierce herbicide
NW Wisconsin
Fierce Dry 3.75 oz 3 pts thundermaster pre didnt get sprayed again on drilled beans... 10 weeks is no joke for residual on it. 8 weeks I would say for sure with proper activation. Injury can be more if it is cold and wet but more than pays in weed control for sure...
Posted 12/2/2022 13:04 (#9961540 - in reply to #9961413) Subject: RE: fierce herbicide
Manila, Ar
It does have a risk of injury to the beans, but usually at emergence with cool/wet weather........I've seen injury to the point of replanting........I've seen it work so good that only one post app was needed..........darn good product
Posted 12/2/2022 14:14 (#9961629 - in reply to #9961413) Subject: RE: fierce herbicide
NCKS
Very good residual. Slight risk of injury when chasing planter especially early but very rarely have a replant situation. I assume it would have almost identical performance to authority Supreme but you would then have the option to switch to corn with fierce.
We build our own with Anthem Maxx and generic Flumioxazin. It's cheaper plus we split up our Anthem to half pre and half post. We also bump the valor rate to 3oz rather than 2.5 in fierce.
Posted 12/2/2022 15:05 (#9961688 - in reply to #9961413) Subject: RE: fierce herbicide
NW MN
I've used it for 3 or 4 years, spike a little metribuzin, has worked good, and going to use again. Had some crop response this year, but ended up being best beans I've ever had.
Posted 12/2/2022 17:10 (#9961845 - in reply to #9961413) Subject: RE: fierce herbicide
NW Iowa
I also spike it with a little metribuzin. Good residual. I have never had an issue with harming any beans but I have heard a heavy rain as the bean is emerging can cause some injury to the plant.
Posted 12/2/2022 19:31 (#9962059 - in reply to #9961413) Subject: RE: fierce herbicide
WC Iowa
Quit using fierce because I thought it was hard on soybeans. Worst injury I've seen with it was soybeans treated with Ilevo planted, chased that planter out of the field with Fierce and then it rained. First gulp of water was nuclear to those beans. Lessons were learned.
Posted 12/2/2022 20:18 (#9962156 - in reply to #9961413) Subject: RE: fierce herbicide
Northwest IOWA
We got Fierce MTZ last spring as Zidua Pro was in short supply, We had a terrible time with it not flowing out of the 2.5 gal jugs , unless we used warm water and rinsed 5 X ... also had numerous tip and screen plugging episodes with it ...Im not sure I would ever use it again ...
Posted 12/2/2022 23:33 (#9962389 - in reply to #9962164) Subject: RE: fierce herbicide
Fontanelle, IA
southMN89 - 12/2/2022 19:22
Simply tipping the boxes upside down the night before you use it cures the issue 100%
24 hours tipped upside down doesn’t bust or break up the globs, liquid clumps, laffy-taffy type consistencies of lots of jugged chemicals. Should you try it? Yes. But, it only gets the settled chit to glop off the bottom.
Posted 12/2/2022 20:33 (#9962181 - in reply to #9961413) Subject: RE: fierce herbicide
Minnesota
have used more valor than fierce, but have used both. Valor is cheaper and but watch crop injury as others have said. Fierce has 2 modes of action, which is nice,b ut also costs more. Good product. Watch the leaf splash potential with any PPO, had a lot of response this year when beans emerged before it rained, then got a rain that splashed the chemical up on the cotyledens. Only really seem to hurt them in the low OM type ground.
Posted 12/2/2022 20:35 (#9962185 - in reply to #9961413) Subject: RE: fierce herbicide
hammlipps - 12/2/2022 11:26
Just wondering the performance for the guys that have used Fierce herbicide. Does the residual hold up? Soybean injury?? etc. Thanks
With 6 oz of Fierce EZ you get 0.0797lbs of pyroxasulfone (2.45 oz Zidiua SC) and 0.0628lbs of Flumioxazin (2oz Valor SX). If you have heavy grass or waterhemp I would want a bit higher rate of Zidua. The max rate of Zidua SC is 5 oz on Medium soils. Adding metribuzin to Fierce is a good idea. Attached is a Purdue article with some good information.
Fierce can be hard on beans if it's cold and wet. Especially if you use ILeVO seed treatment. ISU recommended spraying it a week or so before planting. The thought behind it is to get rain on the herbicide before the soybeans emerge.
fierce herbicide
