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Chapter 1: What is the main topic discussed in this episode?
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Let's just take waterhemp again for an example. That's one a lot of people like to talk about. So if we go out there and spray atrazine-based product. Let's say atrazine. Spray atrazine on waterhemp. You've got one mode of action that's working there. We know that there's atrazine-resistant waterhemp out there. By looking at it, you can't tell if it's atrazine resistant.
It's not holding a sign that says, hey, I'm resistant. You don't know. How do you know? Yep. So you think, all right, let's throw a couple of modes of action out there, or maybe we throw three. And so we talk about not only modes of action, but effective modes of action. Yeah. We're spending a lot of dollars. Spending a lot of dollars.
You want effective modes of action for the weeds that you have a problem with.
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Chapter 2: How does weed pressure impact crop yield?
Just for example, I would start in corn. And I would say one that really works for us is Resicore Rev. People are familiar with that Resicore Rev name brand, that Resicore brand. They know it controls weeds. This Resicore Rev brand, now we're able to extend our application window all the way up until the corn is 24 inches tall.
So that gives us great flexibility if we run into a weather situation that might get us delayed. Also has great great tank mix flexibility. Sometimes folks like to mix it with 32% or 28% and then use some ATS. Boy, they have trouble with that with some products, not with Resicore Rev. I got you. And so that works. So if someone's doing a a weed and feed type program.
They've been struggling trying to get that mixed work. Here's an option for you that works really well.
So you're talking about making a plan no matter what our acres are, maybe before we start. So as we're consulting with our crop specialist and their Corteva products, I think we need to go back to why. So let's start with the why first. Why are weeds bad?
So weeds are competing with the crop for sunlight, for moisture, for nutrients. So they're competing just like the crop is. They're wanting to take that in and grow and complete their life cycle. And so when the weeds are out there, they are impacting yield because they're taking resources away from the corn or the soybeans or wheat or whatever it is that you have out there.
And so we need to control them. And it sounds maybe simple, but we've become so reliant on a few families of chemistry. And so we've maybe developed some resistance situations here that are problematic. Even if they're not resistant, you'll hear people talk about tough-to-control weeds. And things evolve over time, right? They figure a way around. Mother Nature figures a way around things.
And so that herbicide just might not be as effective. It might not be resistant, but it just might not be as effective as it once was. So we need to come up with different herbicides. We need to come up with different tank mixes. maybe multiple hits with multiple modes of action at multiple times to get the control that we need.
And we'll go deeper in that in just a second. And one thing I'm thinking is I have like a tabletop flat farm, and I get wet spots in certain spots, okay? And I think, ah, you know, it's really, really clean except for like right around the edge of that wet spot, and I get those weeds that are just right there. I'm thinking, ah, is it really worth making a pass at?
But the more I study this stuff is that I'm seeing that maybe that's where the insects are at. And then they're going to spread to the rest of my field. I mean, like, what do I need to be worried about?
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Chapter 3: Why is scouting important for effective weed management?
And now let's add some atrazine to that. And now if you're using traits, we can probably add some glyphosate to that. So you've got five different modes of action, but really you've got four that are going to kill what's up and what's there. And is there a residual that stays there too? So the surpass component provides some residual, like I mentioned before.
You do get a little bit of residual out of the mesotrion component. You do get a little bit out of the stinger component. You will get out of the atrazine. Glyphosate is a touch it and kill it if it If it's not there that day, it's not going to do anything.
How do I know as a producer? How many modes of action do I need? Every cool marketing says I need 22 ways to save money.
But wait, there's more. That's a fair question. Good question. You know your farm better than anybody. You know kind of what's going on probably with your neighbors as well. You know what you've used in the past. You know whether it's worked or not. You may not. You may not understand completely the chemistry that you're using.
You know, a lot of people hear the names, but they might not know what's in it. And they'll go, well, I'm rotating my chemistries or I'm using this, but it might have the same active ingredients in it. And so you're really throwing the same thing out there time after time. So now someone might come up with a super new mode of action. We're all looking for the next great one.
And when that shows up, maybe they will be able to use that one by itself for a little bit, but I'll bet they're going to also say, hey, let's tank mix that with something else so we make this last longer. If we just use this one by itself and use it over and over and over again, we're just going to be back in the same boat we are right now.
If I have, you named eight different chemicals there that were eight different things that help with a mode of action for me. And my simple mind takes it as prevent, kill what's there and protect it for the future. So now I'm the operator out there. We're mixing in the tank. Do I have to be worried about flexibility there? Do I have to take 10 passes or do I do this all at once?
Or like, how's that work?
There are some product, there's a couple of things you need to be aware of there. One would be compatibility. Can we put it all in the tank together and can we hold it together? Okay. And can we get it out of the sprayer? Okay. Yeah. So I can come back to that. The other thing would be if I put all this together, am I going to have an impact on the crop? Is it too hot? You know, so to speak.
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Chapter 4: What are the benefits of using multiple modes of action in herbicide programs?
At some point, that pre is also going to fall apart, right? It's only going to last so long. That residual activity is going to drop off. And so you're going to have some weeds come through. That's not a failure necessarily. That's just the chemistry wearing out. We know that's going to happen, and you're probably going to have to make that post-pass.
So going out and scouting, seeing what's there, keeping an eye on how long that residual is working. If you've had a lot of rain, that residual might wear off a little quicker than what we wanted to, potentially. If it's really dry, maybe we're not keeping that in the soil profile active like we want to. It's kind of like a sponge, if you think about it that way. We activate that chemistry.
It's in the soil solution. Soil dries up a little bit. The chemistry might get a little weaker. We get a little rain. It kind of refreshes it, and it's working again. But eventually it's going to wear out over time. You're going to have to make that post-pass. So scout. See what's out there and verify what weeds you have. See if there's any problem spots, something new showing up in the field.
But don't just go in there at the entrance or at the field drive. Take a little look around the field. See if there's anything new that catches your eye. Make sure you know what size it is. Our best applications are going to be when weeds are two to four inches tall. Not two to four inches tall.
Yeah, yeah. Two to four inches tall.
That's when we're going to have the greatest success. And so if we're ahead of time, if you're ahead of schedule, it's kind of like getting to the airport or something. Oh, yeah. If you want to be ahead of schedule, it's going to be a better experience. If you spray those weeds when you're ahead of schedule, you're going to have a better experience.
So verify what you have out there so you make sure you're using the right chemistries to come over the top that second time.
That's awesome. Well, I appreciate this conversation with you, Jeff, here at Corteva. You guys literally have a solution for every crop and every acre.
That's pretty cool. We've got a lot of products for a lot of different crops. And sometimes we don't have the answer. And I hope we're honest enough to tell you we don't have the answer. We can point you in the right direction. But we do have quite a stable of products that are very effective, been tested over time. Work well. Hopefully they bring good value to growers when they buy them.
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