Dylan Mangel

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55 appearances 1 recordings 1 series first heard Mar 2025 last heard Mar 2025

Dylan Mangel’s voice in public audio — every appearance, attributed to the second.

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Farm4Profit Podcast · Soybean Cyst Nematode: The Silent Threat Stealing Your Yield · 3 Mar 2025 podcast

The big follow-up for management is just testing to see if you have that nematode still. You can't see it unless you have very extreme cases. You might see stunting in your fields, but like Horacio said, you could get up to that 30% yield loss, which is quite a – I mean, that's a lot, right? But without those noticeable above-ground symptoms.

So testing is really important to see if this population is – managed properly if it's staying under control or if you need to take more extreme actions with management.

So there's others coming online. So industry, that's sort of a rapid response to this problem. Those two products came out. There's definitely new ones coming out. Timerium from Syngenta is something that's going to be coming out. And I think we've seen that in trials in the field and our research. And they're being pretty confident in that. I think we'll see that in the next couple of years.

I'm not sure of the exact timeline. There's also bionomaticides that we've been looking at as well. So these same companies, some additional ones, they're putting those products out there. When it comes to these, I think everyone's seen biologicals pick up in the last couple of years. It's What we've seen with them so far is maybe some level of effectiveness.

But I think when it comes to biologicals, you've got to have lower expectations as well. So those products are often marketed as pairing with other products to get a more complete control. But as time goes on and as we realize the limitations of resistance in the short term, industry has filled that gap with these kind of products.

Yeah, so I think about them just like an insecticide. In fact, I often think about nematodes as insects. They're basically small worms. So if you can poison them, if you can kill them, it's going to work like that. Now, a lot of these products have different modes of action, just the same way with fungicides.

We have quite a few mode of actions, a lot of different chemistries, but ultimately the individual products are there to kill those nematodes. Okay.

Yeah, they've spread pretty much everywhere rapidly. They definitely have preferences. I think nematode in general, they need some sand in that soil so they can get around. They need pockets in there. So compared to a bacteria, these are much larger. So they need to be able to move around or swim around in those soil pockets. So we typically see worse damage in those sandy soils.

Mm-hmm.

I'd say just pulling plants isn't even enough because... Depending on soil type, especially unless you have really sandy soils, those cysts are going to fall off really easily. So it's actually pretty difficult to dig those. And, you know, we'll try it sometimes. We'll dig them up and we will very carefully pull soil off and see if we can see those.

But even then, that can be deceiving if you pull that up and have nothing there. Really, soil testing is the only consistent option to see if that's in there. fortunately, a lot of states have free or checkoff funded soil testing programs for soybean cyst nematode. I know we have one here in Nebraska. Any Nebraska farmer can bring our lab soil samples and we'll tell them if they have it.

Horacio, you guys are the same in Ohio, correct? Yeah, correct.

And I'm not sure off the top of my head, but several other states also have programs. So if you have questions, I think the first place I'd start is with your local extension in your state or your local extension service, and they could probably guide you right to the most – economical testing option in your state?

Well, the great thing about this nematode as far as sampling is it's always going to stay in the top of the soil profile. Some of the corn nematodes will move up and down at different times of the year. So you got to really time those perfectly. This one you can sample any time of the year and at any point in your rotation.

But I'll suggest that the point at which those populations will be at their highest is towards the end or at the end of a soybean season. So if you're just starting out and you want to check, grab those soil samples in the fall right after you harvest. And then you can see what they are at their peak level.

But if you do grab them off cycle and you want to follow up in two or three or five years and see if they're moving still, grab them at that same point in your rotation. And then you'll have a point to compare them with.

Right. That's good. And you could do that too. But it's really good to know when we read those results that these are coming out of corn because we know those numbers have fallen a lot. so we can read into those numbers differently based on where you are at in that rotation.

Well, if Corey has any background information on those fields, maybe it'd be good for him to share some of that.

Yeah. So, I mean, that's a – coming out of corn, going into beans, we're going to read those as higher than we would have coming out of beans, right? But – In Nebraska, for example, our median positive field coming out of beans is around 4,000 eggs per 100 cc of soil. So that's the median. We see a lot of fields that have very low levels, lower than we're seeing here.

We also get fields with 80,000. I don't know. Horacio, what's the highest SCN count you've ever seen?

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