WEBVTT Transcripts are auto transcribed. If you need more accurate transcripts of an episode for ADA purposes, please contact Anthony Hanson - hans4022@umn.edu. 00:00:00.000 --> 00:00:13.000 Extension. This is strategic farming field notes. today's topic will be on soybean and corn insects, action, thresholds and status and the big question are we done for the year these sessions. 00:00:13.000 --> 00:00:15.000 Are brought to you by the University of Minnesota. 00:00:15.000 --> 00:00:27.000 Extension and dinner support from the Minnesota Soybean Researcher and Promotion Council along with the Corn Growers Research and Promotion Council I'm Dave Nicolai along with Anthony Hanson 00:00:27.000 --> 00:00:32.000 the retail extension educators in crops. We are serving as moderators. 00:00:32.000 --> 00:00:45.000 This morning we welcome our panelists this morning Bruce Potter integrated test management. specialists from the University of Minnesota, located at the Southwest Research and Outreach Center at Lambertton, Minnesota, and also 00:00:45.000 --> 00:00:52.000 Dr. Bob Cook, whose extension Soybean, animologist from the University of Minnesota. So with that I'm going to turn it over to my co-host integrated Pess management specialty, Anthony Hansen coming into us from Western Minnesota. 00:01:56.000 --> 00:02:04.000 Someplace out there in that Morris area. So Anthony did get a little bit of rain over the weekend or this past week or not. 00:02:04.000 --> 00:02:09.000 Yeah, Dave: actually, so Bruton area here can Alexandria moving area. 00:02:09.000 --> 00:02:14.000 We got about 2 inches of rain just yesterday. but kind of a narrow band. 00:02:14.000 --> 00:02:19.000 So we got really lucky where we are many other dry areas in the region, too. 00:02:19.000 --> 00:02:23.000 So pretty variable depending on how that ranger knows for people. 00:02:23.000 --> 00:02:32.000 Well, that's certainly the case I I know that just mentioned some places in in Southwestern Minnesota didn't get the rain, and certainly I'm in Eastern Minnesota more towards the Metro area 00:02:32.000 --> 00:02:38.000 here in in Dakota county, and we've been missed consistently throughout the summer. 00:02:38.000 --> 00:02:42.000 Here, so we're we're way behind average so bottom line a lot of variability. 00:02:42.000 --> 00:02:49.000 I I guess so, you know, with that and here to help us with some of this variability. 00:02:49.000 --> 00:02:59.000 Bob, a little bit on from your standpoint, everybody, and keeps asking me, where are the soybean methods? 00:02:59.000 --> 00:03:04.000 Yeah, thanks, Dave. you know. First off, I guess you mentioned, you know. 00:03:04.000 --> 00:03:06.000 Are we done with insects for the year and i'd say certainly not in Soybean. 00:03:06.000 --> 00:03:16.000 I think we're just getting to the point where things could start getting interesting, and if an entomologist is saying that I can ask, they always used to say, You know, you might want to be concerned. 00:03:16.000 --> 00:03:28.000 The Soybean athens they're definitely out there I think this variability in weather and plant growth stages is leading to variability across the State in aid populations. 00:03:28.000 --> 00:03:37.000 There are some areas where, if the numbers are increasing, Southeast, Minnesota, Central, Minnesota. 00:03:37.000 --> 00:03:44.000 Got a report yesterday. and it was kind of from Clara City up to maybe Sox Center. 00:03:44.000 --> 00:03:49.000 And then I think, Bruce, You've been seeing it if it's increasing in Southwest Minnesota. 00:03:49.000 --> 00:03:57.000 But you know a lot of this will depend on weather, I think, for Aids and spider mites, you know, over the next couple of weeks. 00:03:57.000 --> 00:04:09.000 Kind of determine what are what our main issues will be? Yeah, Bruce, what are you seeing in Southwestern Minnesota in terms of So I mean, if it out there I know like if Bob Mansion where 00:04:09.000 --> 00:04:20.000 i'm in Central minnesota west Central really variable. my cases I've already seen this, so we've been getting up this year, whereas we go Look for the South through East and hi Bob mentioned. 00:04:20.000 --> 00:04:26.000 There are a few pockets for people are finding if it's Well, I think it's the same here. 00:04:26.000 --> 00:04:40.000 It's real variable if you get in these areas that traditionally have some a foot populations early we're we're seeing some buildup I think there's probably a few fields that have some 00:04:40.000 --> 00:04:42.000 recommendations put out on them, yet. but they're pretty scattered. 00:04:42.000 --> 00:04:48.000 They're the small fields feels with a lot of buckthorn around him at the research and outreach center. 00:04:48.000 --> 00:04:51.000 We've got a serious setup for insecticide trials. 00:04:51.000 --> 00:04:57.000 We've been watching that, and as of yesterday that's now, a 100% of the plants have aphants. 00:04:57.000 --> 00:05:11.000 Those populations are are still fairly low averaging about 15 per plant. but you know, when i'm looking at a feel, for if it's my first queue is as those flip percent plants infested go up once you 00:05:11.000 --> 00:05:14.000 start getting over 50%, and certainly when you're in 100%. 00:05:14.000 --> 00:05:24.000 You really got to start paying attention because there's no place else for them to go. There's no new plans to colonize, and those populations could build up pretty rapidly. 00:05:24.000 --> 00:05:35.000 So we're just have to wait and see we don't have any rain here at Lambertton, and that's gonna maybe encourage some of those populations to leave if we get the beans under moisture stress open some 00:05:35.000 --> 00:05:48.000 things up for spider mites as bob was saying I was going to say next week is farmfest, Bruce, of course, and and of course, always time with firefighters. It's going to get warmer and it looks like It is next week, you know 00:05:48.000 --> 00:06:00.000 we're talking eighties into the into the ninetys what do both of you think about the temperature effect Not only on on saving? if it's do we have to be concerned about spider mites at some point or are we still too far away from 00:06:00.000 --> 00:06:12.000 that in a in a dry situation. I think for soviets I mean there's research out there that was done in a girl chamber that showed that the aids don't perform well under higher temperatures you know up into 00:06:12.000 --> 00:06:21.000 the you know, mid nineties and higher. but you gotta remember that that work was done under constant temperatures 24 h a day at those high temperatures. 00:06:21.000 --> 00:06:26.000 And in a swiping field you got the canopy of the beans mitigating that temperature a little bit. 00:06:26.000 --> 00:06:39.000 You've got that fluctuation from day to night, we where, even though you're high temperatures in the day, might be in kind of a stressful zone for the aphids you know the other part of the day 00:06:39.000 --> 00:06:42.000 might be closer to the sweet spot where they can still be reproducing. 00:06:42.000 --> 00:06:49.000 So, just because we run into a stretch of hot weather do not count the if it's out. 00:06:49.000 --> 00:06:55.000 No, that was kind of a follow-up was thinking about, too, especially considered what whether we might be have going forward. 00:06:55.000 --> 00:06:58.000 You know, in some of these fields were people barely seen an atheist. 00:06:58.000 --> 00:07:02.000 You might have just a couple on the top leaves right now. 00:07:02.000 --> 00:07:11.000 Is there no still definitely a potential for issues to pop girls fields Well, we can't bank too much on predicting what's gonna happen quite yet. 00:07:11.000 --> 00:07:16.000 Based on current accounts. Yeah, I think they're still concerned you know these athletes, our very mobile. 00:07:16.000 --> 00:07:21.000 They developed that wing form, and they can fly around to different fields. 00:07:21.000 --> 00:07:32.000 Could get a call in any event like that happening and previously uninvested fields could get colonized, and if there aren't many natural enemies there, or anything and if temperatures get into that sweet spot for the 00:07:32.000 --> 00:07:44.000 eighth, and their numbers can increase very fast see bruce What are some tips for if you're gonna if a grower or or a professional is gonna go out scouting these warmer temperatures where in the canopy, should they start to 00:07:44.000 --> 00:07:52.000 look for from if it's to get a better assessment going forward and think of natural enemies, etc. 00:07:52.000 --> 00:07:55.000 Well, I think I think those if they're gonna be wanting to be on that new growth. 00:07:55.000 --> 00:08:03.000 Yet as long as those plants are growing vegetatively they can move to the under side of the leaves to get protected, and that's usually where you find him. 00:08:03.000 --> 00:08:17.000 Anyhow. But the other thing that's gonna happen is as these plants start grow reducing vegetative growth, and and you get the later the reproductive stages you're gonna start to see those 8 if 00:08:17.000 --> 00:08:26.000 it's Move further down in the canopy you'll see more on the stems. you'll see a more around the pods, and then real late as those plans get back and get to get into 8 the 00:08:26.000 --> 00:08:32.000 r 6 stage for that full pod stage then you'll start to see them more towards the bottom of the plant. 00:08:32.000 --> 00:08:39.000 So right now it's probably as these beans are in our 3. you're probably it's probably pretty easy scouting. 00:08:39.000 --> 00:08:46.000 A lot of those are going to be at the top of the plant. but they're going to start moving down in that canopy as a season progresses. 00:08:46.000 --> 00:08:55.000 Any comments on action, thresholds and and product choice or things to think about here for either one of you. 00:08:55.000 --> 00:09:05.000 Well, I think again, just to reiterate with all this variability across the State. we wanna make sure we are scouting and not just assume we've got issues of getting in the field estimating numbers of if it's. 00:09:05.000 --> 00:09:09.000 On plants. we still recommend the 250 if it's per plant as a threshold. 00:09:09.000 --> 00:09:19.000 Then The majority of the plants invested and I deal with that population increasing, and to know if the population's increasing, we need to be scouting over time. 00:09:19.000 --> 00:09:32.000 As for management options or insecticide options, remember that core pause, you know, so think of things like Laura's band. 00:09:32.000 --> 00:09:42.000 What's the fairly common mixture Cobalt? I think no longer use those due to that epa action where they revoke the tolerances. 00:09:42.000 --> 00:09:51.000 So if you have leftover stock of those chemicals remember you can't use those but we do have other products. 00:09:51.000 --> 00:09:58.000 Well before getting into those and there's also resistance to the paritroids in many soybeanate the populations. 00:09:58.000 --> 00:10:08.000 So we've documented over several years now resistance to by fan thread and lambda is a health right, and we suspect that they're could very likely to cross resistance to some of the other 00:10:08.000 --> 00:10:19.000 pyrethroids. So you know, with with those 2 items, the regulation and the resistance it's really already reducing the size of our chemical toolbox for this past. 00:10:19.000 --> 00:10:26.000 But we do have some newer products like transform, Sophie, you know, and Sabanto. 00:10:26.000 --> 00:10:35.000 Our research suggests. that they're effective against david's and they have the added benefit of being a little bus toxic to some of the natural enemy. 00:10:35.000 --> 00:10:42.000 So you can ideally kill off the aids and leave the Lady Beatles and other predatory insects out in that field. 00:10:42.000 --> 00:10:46.000 And then there are still some of the mixtures. 00:10:46.000 --> 00:10:50.000 To that. at least my data has been suggesting are still pretty effective. 00:10:50.000 --> 00:10:57.000 Bruce i'm curious to hear from you but you know some of the mixtures where it's a pythroid and new and nicotonoid. 00:10:57.000 --> 00:11:03.000 Those still seem to be holding up for the most part 00:11:03.000 --> 00:11:10.000 So here's a question thinking about no people are going out replying some of these chemistries work a little differently. 00:11:10.000 --> 00:11:13.000 Either Bob or Bruce. what are you looking at for? Fcc. afterwards? 00:11:13.000 --> 00:11:18.000 I know One of these can definitely have different effects on the Athens, where you might not. 00:11:18.000 --> 00:11:26.000 What looks like, you know, Dennis right away at least that Yeah, that'll be sophisticated. 00:11:26.000 --> 00:11:30.000 The feeding stops right away, but they hang on for a few days while, or starving to death. 00:11:30.000 --> 00:11:37.000 So if you like torturing aphants that's a product you might want to select but there's a you know. 00:11:37.000 --> 00:11:42.000 So there's we've got a pretty good range of options for soybean, if it's right now. 00:11:42.000 --> 00:11:55.000 Even if, in spite of the lack of wars, man and clarify us being gone, I think one of the concerns is, you know, people will need to be proactive and and look at insecticide availability just 00:11:55.000 --> 00:12:00.000 like everything else. Some of these products are in short, supply in different areas. 00:12:00.000 --> 00:12:12.000 So you know you don't wanna be caught unaware The other thing that's gonna happen right now is is we're moving into that period as this vegetative growth stops we're gonna see a lot of 00:12:12.000 --> 00:12:23.000 dispersal of infants. they tend to move around round farmfest time. storage motorcycle rally. That's kind of the queue, for when we see a lot of that move but between. 00:12:23.000 --> 00:12:34.000 Feels happening, and I know there's some people that have tried to get away with the the cheap and easy way, and have mixed it insecticide, and with their fungicide, or their herbicide and those are 00:12:34.000 --> 00:12:41.000 the fields that people better keep an eye on because depending on what product they've used. 00:12:41.000 --> 00:12:49.000 They may have used a product that the if and sars are no longer susceptible to, and they may have knocked out all the beneficials in those fields. 00:12:49.000 --> 00:12:52.000 So it's some those fields are the ones that that need a special. 00:12:52.000 --> 00:12:57.000 They're gonna need a special watch you know later on the season unless you're up fishing and don't care. 00:12:57.000 --> 00:13:04.000 And then it doesn't matter, Maybe we should move on to talk a little bit about some other soybean insects. 00:13:04.000 --> 00:13:06.000 Including galm age or good Bruce. 00:13:06.000 --> 00:13:18.000 But maybe Bob you had a curious sample I know we talked about a little bit earlier. But there are a lot of things that can happen out in that soybean field i'm just even beyond if it's at this 00:13:18.000 --> 00:13:33.000 point time. Yeah. So last year we documented for the first time a tiny leaf mining moth whose caterpillar minds and the leaves of a couple of native plants, and last year we found it feeding on 00:13:33.000 --> 00:13:38.000 Soybean A colleague of mine also found it in Quebec. 00:13:38.000 --> 00:13:42.000 I was kind of hopeful that it was just gonna be some kind of a novelty thing where we'd maybe see it here and there. 00:13:42.000 --> 00:13:56.000 Never add any damaging bubbles. but I went out and visited a field earlier this week in Sydney County, so kind of near the Minnesota River, and it was hit pretty hard. You know, especially along the edge of that field near 00:13:56.000 --> 00:14:03.000 what in areas a pretty fairly high percentage of the leaf area was affected by these. 00:14:03.000 --> 00:14:12.000 We know very little about it, you know. It was just feeding on these 2 kind of obscure native plants previously, so nobody has ever studied it all that much. 00:14:12.000 --> 00:14:14.000 Last year was the first time we saw it on Soybean. 00:14:14.000 --> 00:14:21.000 We're kind of like swimming go image we're playing catch up here trying to figure out you know about his biology. 00:14:21.000 --> 00:14:27.000 It's past potential things like that. but I think with this one you know as it's mining in the leaves. 00:14:27.000 --> 00:14:40.000 It leaves a kind of white paper, your list your like mine on the underside of the leaf, and then, as the larvae get bigger, they start feeding on more and more. 00:14:40.000 --> 00:14:43.000 The leaf tissue, and that leave tissue eventually dies out. 00:14:43.000 --> 00:14:55.000 So I I think we'll end up managing it as you know, estimating defolation or percent a leaf area affected like we do some of the defoliating insects in this particular field the to the 00:14:55.000 --> 00:15:02.000 field was, had a very low, level infestation, but there was at least one edge that was yet pretty hard. 00:15:02.000 --> 00:15:09.000 So in the lookout, for we did post a crap news article a couple of weeks ago about it. but i'll have some pictures. 00:15:09.000 --> 00:15:14.000 Okay, Thank you. But all the time here for both Bruce and Anthony your Western areas. 00:15:14.000 --> 00:15:18.000 Can you give us a quick update on gomage in soybeans? 00:15:18.000 --> 00:15:25.000 Bruce, you're engaged in a significant you know regional monitoring situation, kind of where where are we at now? 00:15:25.000 --> 00:15:41.000 At this point in time in the year. well we've got right now we've got this the first generation of flies being produced on soybeans that the overwintering generation that came off the last year's soy being 00:15:41.000 --> 00:15:47.000 grown into this year. so I mean that for the most part those populations have been fairly low. 00:15:47.000 --> 00:15:53.000 There's some edge infestations but we compared to some of these higher years. 00:15:53.000 --> 00:16:00.000 2,000 20,020 the the the crop injury is not nearly as severe as it has been. 00:16:00.000 --> 00:16:04.000 That may change because we're catching an awful lot of adults. 00:16:04.000 --> 00:16:20.000 Now we'll have to see what happens one thing we've learned, is it doesn't seem that you know the the dry, hot, dry weather keeps the adults from from emerging so as as these eggs are laid and 00:16:20.000 --> 00:16:32.000 larvae emerge it's gonna be easier to find. go image and fasted field, so as people are out looking look on those edges of Jason to last your soybeans and look for for the crop 00:16:32.000 --> 00:16:43.000 injury we're seeing a lot of soybean rut diseases that's causing wilting and some hail sand blasting injury that's causing some brittle stems so make 00:16:43.000 --> 00:16:48.000 sure you're peeling that outer layer that stem back and finding larvae before you. 00:16:48.000 --> 00:16:53.000 You blame it on salt on go image when it's actually a another problem. 00:16:53.000 --> 00:16:55.000 So what would be the crop? injury, symptoms? 00:16:55.000 --> 00:17:00.000 And Anthony, have you seen anything? Yeah, a little bit farther north here or not? 00:17:00.000 --> 00:17:02.000 Yeah, it was kind of on the northern end or Bruce. 00:17:02.000 --> 00:17:09.000 I think you said a candy I county Last year you had a find out there with decent infestation out there. 00:17:09.000 --> 00:17:20.000 So far this year. I haven't seen anything until I went down to Southwestern Minnesota to see some of Bruce's sites down there so so so far, quite up here, but still early in this season like 00:17:20.000 --> 00:17:24.000 you mentioned, too. So Bruce is that how about you Well, it's It's pretty. 00:17:24.000 --> 00:17:29.000 We can find them. but it's not it's you know usually right now in July. 00:17:29.000 --> 00:17:35.000 You know the first part of august is when We're have the most success of picking up new fields. 00:17:35.000 --> 00:17:43.000 We'll be heading east and and north trying to look at some new counties as well, so we'll see what happens. 00:17:43.000 --> 00:17:49.000 It's hopefully. these populations in minnesota stay fairly low. 00:17:49.000 --> 00:18:07.000 The first thing you're gonna see a debilitated plant. if from the edge of the road in terms of driving down what's your first sign? 00:18:07.000 --> 00:18:15.000 You know if you some of these invested plants if they're invested early. They're stunned and they're beneath the canopy, so they're wilted and brittle, but they're underneath 00:18:15.000 --> 00:18:22.000 the canopy, so you don't notice some many more of this surrounding plants have have have covered them up. 00:18:22.000 --> 00:18:37.000 But if you look at what you're gonna start to see now is always at the base of that plant, you may have to to actually look for Is that this coloration right near the ground level and usually towards the at the edge of 00:18:37.000 --> 00:18:46.000 that affected area. There'll be a real dark almost black border between the green tissue and the healthy tissue. 00:18:46.000 --> 00:18:53.000 Look at those plants sometimes they're brittle not always if the infestation is pretty light sometimes they're wilted. 00:18:53.000 --> 00:19:01.000 But again that's when those number of larvae perspective get up, but always peel that that outer layer back and and see if there's larvae underneath it. 00:19:01.000 --> 00:19:07.000 We've been listing a couple of urls on the back and your screen in terms of previous publications. 00:19:07.000 --> 00:19:20.000 But maybe just Bruce, and bob are there or you know. you mentioned, maybe just review what are some plans for crop news for some upcoming articles that'll be timely Yeah, So Bruce, and I are working on one recapping So 00:19:20.000 --> 00:19:33.000 i'd be naked and spider mike scouting thresholds and insecticide, or might aside options i'm working with teresa Cyro from the Mda to put one 00:19:33.000 --> 00:19:37.000 together on corpse and reminding folks that we shouldn't use it even if we have leftover product. 00:19:37.000 --> 00:19:45.000 And hopefully, some updates from the Mda on disposal. 00:19:45.000 --> 00:19:51.000 So we got a couple of questions coming in here i'll i'll put them together in this case. 00:19:51.000 --> 00:19:58.000 Are we seeing anything for either grasshoppers or thisal categories this year? 00:19:58.000 --> 00:20:03.000 Grasshoppers. Yes, this little caterpillar is not so much, at least not in in my areas. 00:20:03.000 --> 00:20:16.000 The stuff I've looked at. Okay, you know like the the almost all the grasshoppers that i've seen in Southwest Minnesota are red legged, and so they're gonna Hang you know particularly 00:20:16.000 --> 00:20:22.000 around alpha fields. they're they like to have it lay eggs in that in that alpha ground. 00:20:22.000 --> 00:20:31.000 There's some differentials as well but those are the 2 main species, in general, are really low I haven't seen much green clover. 00:20:31.000 --> 00:20:36.000 We're mute yeah you mentioned that Bob I haven't pretty much either. 00:20:36.000 --> 00:20:46.000 Right perspective kind of strikes county area a lot I felt out there. That's where i'm seeing most of the grasshoppers, too, and get into the savings to see a little bit of feeding 00:20:46.000 --> 00:20:51.000 damage sometimes, but yeah, nothing that's anywhere near threshold or not. Very high numbers out there. 00:20:51.000 --> 00:20:59.000 Deeply out for things like Pod. The thing if you do get later in the season, and you get high numbers out there. 00:20:59.000 --> 00:21:02.000 But that remains to be seen if we get to that point. 00:21:02.000 --> 00:21:16.000 For so even at least any other soybean insect concerns, before we kind of jump over to corn here a little bit I think the last one to cover is spider mice a what we might be expecting if we 00:21:16.000 --> 00:21:24.000 get to another hot, dry August like we tend to get what happening there 00:21:24.000 --> 00:21:31.000 You know, I think the situation's kind of prime for spider mites in some areas you know with the the dry weather. 00:21:31.000 --> 00:21:36.000 The spider mites like the heat and and the dry weather. 00:21:36.000 --> 00:21:46.000 You know, Bruce last week was chatting with me about it, and, you know, made some comments about you know maybe spider-ite numbers going into this year might have been a little bit lower last year because of some disease 00:21:46.000 --> 00:21:50.000 outbreaks knocking the my populations down but they can reproduce quite rapidly. 00:21:50.000 --> 00:21:58.000 So it's it's another thing to keep an eye on especially in areas that stay hot and dry. 00:21:58.000 --> 00:22:02.000 Have a note here from our meteorologist to the south. 00:22:02.000 --> 00:22:05.000 Here, Dennis Taylor, out of Usda and on Ames. 00:22:05.000 --> 00:22:09.000 This is hot and dry, I guess, coming in here to in terms of 00:22:09.000 --> 00:22:14.000 Predictions in August, especially hot. seems quite likely. 00:22:14.000 --> 00:22:22.000 I know the Pacific Northwest forecast this morning was for extremely hot temperatures out there and triple digits. 00:22:22.000 --> 00:22:28.000 So with that, just as we talk about spider mites and Bruce, you've talked about this before. What you know. 00:22:28.000 --> 00:22:34.000 Kind of scouting is difficult, but pulling the triggering economically is even more so. 00:22:34.000 --> 00:22:49.000 Isn't it. Well actually Spider, might scouting is relatively initial stages are relatively simple, because, you're probably not gonna wanna treat any field unless you can actually see some sort of damage on the edge of the 00:22:49.000 --> 00:22:55.000 field. what you're trying to do with spider mites is protect the upper canopy. 00:22:55.000 --> 00:23:02.000 So you're gonna see some areas on the edge of the field with particularly with some stippling. 00:23:02.000 --> 00:23:07.000 Yeah, and and you know some small colies on the upper leaves. 00:23:07.000 --> 00:23:14.000 But you don't want to get to the point where starting to lose that love for proper leaf area, because it's not replaceable. 00:23:14.000 --> 00:23:18.000 Sometimes guys, especially in these bigger fields, can get by with an edge treatment. 00:23:18.000 --> 00:23:24.000 But you really have to scout hard and make sure you don't have infestation pockets further out in the field. 00:23:24.000 --> 00:23:32.000 Because otherwise you they, you know, the the center of the field just blows up, and then the edges get reinfested as well. 00:23:32.000 --> 00:23:50.000 So kind of last word are there some insecticides, though to stay away from in a spider might situation here for both Bob and Bruce except by Katherine and stay away from the 00:23:50.000 --> 00:23:55.000 corporeal cost that might be sitting on your shell. 00:23:55.000 --> 00:23:59.000 How about the mitochondria There are a few other options we have for ? 00:23:59.000 --> 00:24:04.000 Lighter rights that we don't have for say Soybean? but most of the others are pretty similar. 00:24:04.000 --> 00:24:12.000 But how well do those work or What kind Yeah, when or kind of what life stages their targeting. 00:24:12.000 --> 00:24:18.000 Bruce, do you wanna take that? I think you've got more experience, maybe with those might asides I I actually haven't yeah. 00:24:18.000 --> 00:24:22.000 So So some of these like by phantom for example doesn't control eggs. 00:24:22.000 --> 00:24:26.000 So you're taking out the amateurs and the adults. 00:24:26.000 --> 00:24:34.000 And and you know if you're if you don't have enough residual There, you can have a catch and get reinfested. 00:24:34.000 --> 00:24:40.000 Some of the products, like zeal work primarily on eggs in the very small images. 00:24:40.000 --> 00:24:47.000 Those have some tho those struggle if you're trying to put them on a full blown infestation. 00:24:47.000 --> 00:24:51.000 Because you've still got the adults the adults are still laying eggs. 00:24:51.000 --> 00:25:07.000 That sort of thing. the products we've got our dimethylate yet. particularly if you're just going after Matt Mike's di methylate agrar mac by fatherine but you gotta keep the rate 00:25:07.000 --> 00:25:13.000 up. That's the other thing there's some premixes with Bifanthron in them that have mites on the label. 00:25:13.000 --> 00:25:19.000 But you got to be really careful of what rate of bifanthan you've got in there because well, I don't have a reduced rate, you know. 00:25:19.000 --> 00:25:24.000 You might be on the edge for might control. maybe we should jump over to corn a little bit, Bruce. 00:25:24.000 --> 00:25:35.000 Here and we're in the end of July comments about how Rome is looking from the standpoint, and then also sticky traps digging ruts, etc. 00:25:35.000 --> 00:25:48.000 What are some things that you could they want to mention here for our participants, you know, over the next few weeks It's time to scout beles. if you've got an early silking field right now, you might wanna especially if 00:25:48.000 --> 00:25:52.000 you're in area with a lot of northern things like sweet corn or real early. 00:25:52.000 --> 00:26:05.000 That's a problem. But we're into that time now we're making decisions for next year's corn crop. 00:26:05.000 --> 00:26:10.000 So if you're we've got quite a few cooperators and you sticky trap program. 00:26:10.000 --> 00:26:17.000 But if you're running, sticky traps or even doing doing whole beetle counts on plants. 00:26:17.000 --> 00:26:23.000 The time to do it you don't want to go out there too early, and make too many decisions or early because they're males. 00:26:23.000 --> 00:26:27.000 What we really care about is the females that are laying eggs. 00:26:27.000 --> 00:26:37.000 We've got pretty good population as the winner didn't do very much to the Western legs. 00:26:37.000 --> 00:26:45.000 Unfortunately pretty significant damage at Lambertton again. and i'm getting some reports of feel struggling. 00:26:45.000 --> 00:26:50.000 They may look fine right now, at least as long as there's enough moisture. 00:26:50.000 --> 00:26:59.000 If you don't have the wind but we've got some plants that look pretty good in our research bots at Lambertton that you can pull out of the ground pretty easily with one hand. 00:26:59.000 --> 00:27:05.000 So and this we, as we get short on rain now that's going to get worse. 00:27:05.000 --> 00:27:18.000 So basically, start scouting for beatles and and the other thing Right now we are picking up some Western being cut room in the light traps, which is pretty unusual for us, not big numbers. 00:27:18.000 --> 00:27:27.000 But if you're out there, maybe kind of look at the upper leaf surface of some of these corn plants, and and see if you can see some eggs University of Nebraska, probably got the best extension. 00:27:27.000 --> 00:27:45.000 information on on that insect If you're going to be looking at corn you would spend some time on obviously corn on corn, or any particular trait that comes to mind here as to where to put your energy oh, as far as as far 00:27:45.000 --> 00:27:50.000 as r works scouting well I mean I mean if you're in continuous corn 00:27:50.000 --> 00:28:02.000 There's populations of Western chord where i'm out there, and even some of nor we're starting to see some with northern's where we're resisted to multiple traits in the pyramids just 00:28:02.000 --> 00:28:10.000 you know the non vt hybrids of course, in a continuous corner situation are at particular risk right now. 00:28:10.000 --> 00:28:17.000 But there is We've seen a lot of issues with smart stack and chrome, and and the durricate hybrids out there as well. 00:28:17.000 --> 00:28:28.000 It's just a matter of what level of resistance is in that local population, and what you're overall as far as what the damage is going to be. 00:28:28.000 --> 00:28:40.000 That's really why, you're scouting dave is to find out what those beetle populations are in a particular field. and then what that means for for corn down the road you know if we're gonna get this 00:28:40.000 --> 00:28:46.000 hot and dry. I guess, Bruce, would you, Window, always assume that everything that you see is debilitating the corn plants? 00:28:46.000 --> 00:28:58.000 If you have a reduced root system and cornered Orman interaction if we getting these hot dry conditions as Dennis was talking about in into the month of our August. 00:28:58.000 --> 00:29:11.000 Oh, yeah, definitely, because if you've got if you've got a reduced root system, and you're having a issue taking up moisture and nutrients for that matter But if you're having a in a period root system the effect of a certain amount of what 00:29:11.000 --> 00:29:14.000 pruning is magnified under drug under drop stress. 00:29:14.000 --> 00:29:19.000 So your your possibility, allele, yield loss goes up with dry weather. 00:29:19.000 --> 00:29:27.000 Definitely. So yeah, yeah, this case you mentioned continuous corn. 00:29:27.000 --> 00:29:33.000 Is that still the best tool we can use across the board for trying to keep our rotations going to avoid continuous corn. 00:29:33.000 --> 00:29:38.000 If a grower can at least some lifestyle growers might not be the easiest to do. But 00:29:38.000 --> 00:29:50.000 What effects do you still see from avoiding those involved with more at least a corn saving rotation, or 00:29:50.000 --> 00:29:55.000 And you've already got traits that create a pure minute hybrid out there. 00:29:55.000 --> 00:30:09.000 Really the the smart thing you're the only effective thing you can do right now is to rotate out of corn, and if you have more than a half and no have gone on a pyramid you need to report that and and technically 00:30:09.000 --> 00:30:14.000 you're not supposed to plant corn bt back into that field. 00:30:14.000 --> 00:30:23.000 The problem. we've got in addition to westerns right now is we're seeing Northern corn rover populations go up, and i'm looking at field this week. 00:30:23.000 --> 00:30:36.000 That's got in in along the iowa border that's got quite a few northern corner or a minute, and and it's a it's a pyramid field so the bad news is extended to I 00:30:36.000 --> 00:30:44.000 pause can go along with bt resistance so that the comments we talk sometimes every year a little bit about. 00:30:44.000 --> 00:30:51.000 If there is a volunteer corn situation in soybeans here, and you alluded to extended Diapos, I mean any comments there, Bruce. 00:30:51.000 --> 00:30:59.000 Certainly those are our suspect things as Well, Well, definitely if You've got volunteer corn out there, and you kill it late of it. 00:30:59.000 --> 00:31:10.000 If it was still live a few weeks ago. the The rooms larvae on those rits probably could could could have survived, and, make it to adulthood. 00:31:10.000 --> 00:31:16.000 The other thing. it happens with volunteer core now is it tends to silly later. 00:31:16.000 --> 00:31:27.000 Now pulls beatles into that field so it's bad out there, in addition to possibility of reducing soybean deals for that volunteer corn is heavy it's got it's got some 00:31:27.000 --> 00:31:38.000 ramifications for the orman they're not good it Certainly, if you've been planning some of the traded corn in the past, and we think about somebody's herbicides, the flops and the dims some are going to 00:31:38.000 --> 00:31:42.000 be better than others works. work with your crop consultant or your supplier 00:31:42.000 --> 00:31:47.000 Otherwise you'll be you know putting the product out there from a herbicidal standpoint, that isn't going to do any good. 00:31:47.000 --> 00:31:54.000 But at this point I think we're to the point where we're gonna have to do some hand you know labor out there. 00:31:54.000 --> 00:32:05.000 Do what you can to get the volunteer corn out of that situation, particularly from going to going to see as well. 00:32:05.000 --> 00:32:14.000 When you get these patches and and you know relatively high populations and areas, the fields that's where you could have some issues down the road. 00:32:14.000 --> 00:32:20.000 I think that gets us to about time here. So Bruce, said Bob, thank you for joining us today. 00:32:20.000 --> 00:32:25.000 Takes care of all the we've got the it looks like so dated. 00:32:25.000 --> 00:32:29.000 I'll have it off here. Yeah, Well, thank you very much. Anthony. 00:32:29.000 --> 00:32:32.000 We wanna thank everybody for attending here today, and we thank our panelists. 00:32:32.000 --> 00:32:41.000 Both the Bruce and Bob. we have a very short 4 question survey that you that you can participate in, and you conclude the session today. 00:32:41.000 --> 00:32:43.000 Again. We want to thank our sponsors Minnesota. 00:32:43.000 --> 00:32:51.000 So I mean Research and Promotion Council, along with the Minnesota Corn Research and Promotion Council and the University of Minnesota Extension. 00:32:51.000 --> 00:32:55.000 You can tune in next week We will be on the air even though we far fast. 00:32:55.000 --> 00:33:01.000 We'll have some other moderators and that'll be again on August third. 00:33:01.000 --> 00:33:11.000 I believe Anthony is that correct and it'll be a Wednesday same time at 8 o'clock, and we'll have an updated crops program. 00:33:11.000 --> 00:33:16.000 We will continue with that situation. so thank you anthony if you don't have anything else. 00:33:16.000 --> 00:33:28.000 We'll conclude, and and again, thank our our panelists interpreting, and we have recorded this as a podcast and for future delivery, as well as a recording of the actual session itself. 00:33:28.000 --> 00:33:37.000 So thank you again for attending I appreciate that and We're signing off from here at the University of Minnesota extension.