Producers are in the fields preparing to plant spring crops. If you don’t have resistant weeds, you’ll want to keep it that way, and if you do, you’ll be working to get rid of them. Soybean Portfolio Manager, Susan Macy with DuPont, says that the time to start fighting resistant weeds is right now:
“The best thing that a grower should do, as far as controlling the tough weeds in soybeans, but especially the Palmer Amaranth, with the glyposate resistance is get some residual out there. Put down a product that’s going give some burn-down, so it’s going to kill all those weeds that are out there, and it’s going to give some residual. If you’re putting it out there a couple of weeks before planting, that’s going to allow you to plant into a clean seedbed, and then with the residual that’s going to give you some control, that’s going to give you some activity on a Palmer Amaranth, or whatever tough weed that you have. But, get something that has activity to give residual, and then when most of the soybeans are Roundup Ready soybeans, so when a growers comes to put his glyphosate application on, it’s closer to crop canopy.”
DuPont offers a herbicide product that can be effective in achieving control of resistant weeds. Macy explains:
“On thing DuPont offers is DuPont Envive herbicide, and that’s going to give them contact, some burn-down, plus some residual allowing them to put a glyphosate application on closer to crop canopy, and it’s going to have multiple modes of action, so it’s not the same chemistry as glyphosate, so it’s going to give different chemistry’s to work on the Palmer Amaranth, and that’s what we need, we need the Palmer to have multiple different kinds of chemistry’s working on it.”
Since glyphosate resistance has become a persistent problem, ‘multiple modes of action’ has become a catch phrase regarding weed control. DuPont’s Susan Macy says that phrase is more important than ever:
“That is a key catch-phrase right now. And a few years ago, not everybody really cared or really understood what that meant. But, those multiple modes of action; how does that herbicide kill that plant, how does it work inside that plant? And you have different families that work differently on plants on how to kill them. And that’s why you want multiple products on a plant, so it’s not just killing it one way, and always killing it one way. It’s got multiple ways of killing that plant. And that’s what Envive can offer; it’s offering multiple modes of action, then you have your glyphosate mode of action later on.”
Susan Macy, Soybean Portfolio Manager with DuPont.