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The NDSU Extension weekly podcast In the Pod: Soybean Updates delivers timely insights and expert advice on soybean production.
You're listening to In The Pod, soybean updates, a weekly trek into the latest soybean information from NDSU Extension. Throughout North Dakota, soybean growth can vary a great deal depending on the conditions. Jeff Stachler, NDSU Extension cropping system specialist, has an update from East Central North Dakota. Jeff, how are the soybeans doing around the Carrington area?
Jeff Stachler:Overall, it's a function of how much rain you've received this season and how sandy your soils are. Right now, soybeans are looking amazing where you've gotten rain and you have good water holding capacity, and they are already dead wherever you have not received enough rain and you have sandy soils or low water holding capacity soils.
Bruce Sundeen:Do you have any percentages?
Jeff Stachler:I'm gonna say county like Griggs, maybe three to 5% of the soybeans are gonna be goose eggs. And we got the Southwest Corner that I think is amazing and has potential for forty-fifty bushel soybeans because they've gotten the right rain and they have good soils to hold water.
Bruce Sundeen:How are the insects treating you?
Jeff Stachler:This year being drier than normal, we're seeing an insect that we don't normally see, spider mites, and there is a farmer in Griggs County that has sprayed for them. I challenge everybody to be looking on the edges of the fields, especially where there's large grassy areas, especially if you mowed hay in an area, a grass hay, they might shift over into your soybean fields. If the soybeans are stressed because of being saline and or having IDC, Those stress plants actually encourage the spider mites to come in, and then they can destroy your crop. I've seen dead soybeans already from the spider mites. Just be on the lookout. It's not everywhere, but it's out there.
Bruce Sundeen:Have you seen many grasshoppers yet?
Jeff Stachler:Grasshoppers are starting to hop in too. The grass is drying out in the ditches. They're starting to come into the soybean fields, and then soybean aphids have been noticed in the last couple weeks, but hot weather stopped them. But now we gotta watch because now we're cooling off. Now they might come back, so be on the lookout.
Bruce Sundeen:Jeff, let's shift over to IDC.
Jeff Stachler:Last week, for some reason, sometimes we see late season IDC symptoms show up, which are stunting the plants and gonna reduce them and yield and stress them out. It is showing up. There's nothing we can do now. The best we can do is think ahead to when we plant soybeans in that field next time, making sure we're planting the best IDC resistant variety that we can. And then I'm seeing if I taught the root rot in fields too, and we need to remember about thinking ahead to purchasing soybeans next year in fields where you might have seen it last year to purchase the right soybean variety to have the best resistance. We need tolerance or partial resistance mixed with the resistance genes because many resistance genes are no longer working for Phytophthora.
Bruce Sundeen:Let's talk about weeds in your area. Is resistance getting worse?
Jeff Stachler:We are seeing weeds surviving herbicides once again. Unfortunately, it's looking like maybe a little more frequency of a potential for resistance to liberty. We're not saying it's resistant, but it's not looking good. I do have research in oak showing resistance to almost all herbicides in corn and soybeans at this point in time. Further investigation to prove that, but we need to make sure that any annual weeds that are on the field edge are not being harvested or let to go to seed. Mow them off now. The other thing that I really have seen a lot of this year is the Canada thistle and perennial South thistle producing seeds. Those are windborne seeds. They're gonna blow into the field and cause problems for the future. We just gotta get our field perimeters clean. We only need to do five to 15%. If we're talking perennials, maybe 15 feet. If we're talking the annuals to stop seed production, maybe just five feet. We don't want to mow everything. Right? We don't want to get rid of the environment and habitat for other animals. We need to get rid of the weeds that are causing problems.
Bruce Sundeen:Thanks, Jeff. Our guest has been Jeff Stachler, NDSU Extension cropping systems specialist. You're listening to In The Pod, Soybean Updates, a weekly trek into the latest soybean information from NDSU Extension supported by the North Dakota Soybean Council.