WEBVTT Transcripts are auto transcribed. If you need more accurate transcripts of an episode for ADA purposes, please contact Anthony Hanson - hans4022@umn.edu. 2 00:00:02.100 --> 00:00:11.700 David A Nicolai: Welcome to the June 29 2022 strategic farming and field notes and we are welcoming our guests this morning. 3 00:00:12.150 --> 00:00:21.630 David A Nicolai: And my name is Dave Nicolai with University of Minnesota my co moderator for the program this morning is Ryan Miller we're both 4 00:00:22.260 --> 00:00:29.820 David A Nicolai: Crops educators, with University Minnesota Extension, we want to make sure that you understand that these sessions are brought to you through the generous support. 5 00:00:30.360 --> 00:00:39.720 David A Nicolai: Not only University of Minnesota Extension, but also the Minnesota Soybean Research and Promotion Council, along with the Minnesota Corn Growers Research and Promotional Council. 6 00:00:40.140 --> 00:00:49.410 David A Nicolai: Our big our guest today our panelists are Bruce Potter now, who is the University of Minnesota Extension Integrated Pest Management specialist. 7 00:00:49.920 --> 00:00:57.210 David A Nicolai: Out of the southwest research and outreach Center at Lambert in Minnesota our special guests this this morning is Andy. 8 00:00:57.870 --> 00:01:09.060 David A Nicolai: Andy is a part owner and agronomists consultants have extended ag services from lake field Minnesota and then later on in the program we're going to be joined by Dr Dean Malvick. 9 00:01:09.480 --> 00:01:26.040 David A Nicolai: University Minnesota extension plant pathologist for corn and soybeans. 13 00:02:02.670 --> 00:02:09.390 David A Nicolai: So I’d like to welcome my co host this morning Ryan Miller how're things in Rochester Minnesota Brian this morning. 14 00:02:10.260 --> 00:02:11.850 Ryan P Miller: On well Dave done well. 15 00:02:12.360 --> 00:02:16.530 David A Nicolai: Excellent so we're going to get right back into our program here. 16 00:02:17.070 --> 00:02:23.760 David A Nicolai: Actually, and i'm going to bring in Bruce potter here for the majority of this and Bruce and I were visiting about some of the. 17 00:02:24.000 --> 00:02:32.010 David A Nicolai: Integrated Pest Management and some of the other issues that are happening right now in the field, and one of the things that we did talk about was corn red worm. 18 00:02:32.610 --> 00:02:37.470 David A Nicolai: We usually think about corn weight room a little bit later in the season, but a lot of things are happening right now Bruce. 19 00:02:37.740 --> 00:02:49.650 David A Nicolai: In terms of detection managing and also thinking about traps so i'm just going to turn it over to you, and maybe you can introduce your relationship with Andy and some of the things that are going on at Southwest Minnesota. 20 00:02:51.180 --> 00:03:06.900 Bruce Potter: Well sure thanks for having me on today and Andy and his company and myself and can honestly have been cooperating for a few years, looking at rural populations in Southwest Minnesota we've got a. 21 00:03:08.580 --> 00:03:10.170 Bruce Potter: trapping network or. 22 00:03:11.250 --> 00:03:18.690 Bruce Potter: Supported by the Minnesota car and research and promotion Council will we supply traps people put the traps out and fields. 23 00:03:19.770 --> 00:03:33.480 Bruce Potter: monitor for about a month monitor rural populations and the point that is twofold one is to you know increase awareness of reform issues in Minnesota, the other is to see if. 24 00:03:34.020 --> 00:03:43.950 Bruce Potter: You know how to be traits are performing as if there's holding up we've got a lot of resistance issues, particularly with Western card rooms in this part of the state. 25 00:03:45.000 --> 00:03:54.840 Bruce Potter: And and really that's looking at Beatles as they emerge a little bit later on that's one of the ways that the best ways to develop a rower management plan. 26 00:03:56.520 --> 00:04:03.030 Bruce Potter: knowing what populations are in the field if your trade management practices are working, whether that's insecticides trades. 27 00:04:04.380 --> 00:04:07.680 Bruce Potter: Or if you can get by with a non traded corn, for example, so. 28 00:04:08.820 --> 00:04:13.200 Bruce Potter: Andy do you want to mention anything about doing the trapping and why you do it and how you do it. 29 00:04:13.290 --> 00:04:26.100 Andy Nesseth: With me yeah absolutely appreciate that um yeah it's much for the same reason, we are trying to make sure we're monitoring populations with our clients, making sure we're aware of where things are at what the trends are. 30 00:04:26.670 --> 00:04:31.290 Andy Nesseth: we're often trying to examine the dominant population so whether it's northern's or westerns in the field. 31 00:04:31.800 --> 00:04:43.830 Andy Nesseth: And we work with a lot of clients that that have a variety rotation so he's on a variety of trade, so we just want to be able to provide them with some information and make some decisions in the future and select the best management strategies that they can. 32 00:04:46.350 --> 00:04:47.940 Bruce Potter: One of the things we've been seeing. 33 00:04:49.020 --> 00:04:58.290 Bruce Potter: Particularly last year we had some people have had some pretty high risk populations and one of the things that's a little most concerning I guess is, if we look at. 34 00:04:58.770 --> 00:05:12.300 Bruce Potter: untreated corn and BT hybrids in some of these real high pressure long term Cornfields there's really not that much difference in beetle populations between the two of them, so we've got some real. 35 00:05:12.960 --> 00:05:29.400 Bruce Potter: Resistance management issues we have to have to work through, and you know Andy, how do you how do you work through with the client particularly some of these livestock guys were there, they need the corn it's hard for them to plant something besides corn. 36 00:05:30.900 --> 00:05:39.000 Andy Nesseth: yeah I mean for us, we try to put together as best we can sort of a four year window of management, where. 37 00:05:39.810 --> 00:05:46.680 Andy Nesseth: We know we have to have a non host crop in there at this point we can't rely on traits and insecticide to manage her or him effectively. 38 00:05:47.670 --> 00:05:50.700 Andy Nesseth: we've we've learned that kind of the hard way, unfortunately, and with. 39 00:05:51.360 --> 00:05:58.920 Andy Nesseth: Some of the dry weather, we had last year that became extremely apparent, so we try and put together a four year plan where we're looking at a non host prob. 40 00:05:59.250 --> 00:06:07.500 Andy Nesseth: Maybe a non BT hybrid and immediately following there and then a mix of either insecticide or a pyramid trade. 41 00:06:08.130 --> 00:06:17.640 Andy Nesseth: We try not to stack them up, if we can get away with it and typically We wanted the data has shown us that that's not necessarily an effective option. 42 00:06:18.210 --> 00:06:29.040 Andy Nesseth: sometimes difficult to get that you when you're in the field, you know a lot of times you want to hit with everything you can right so that's a conversation we got to have it we're looking at data and. 43 00:06:29.430 --> 00:06:37.530 Andy Nesseth: being reasonable about that and doing the cost benefit not just in the near term but you know long term and not using up the the tools that we do have so. 44 00:06:38.130 --> 00:06:50.010 Andy Nesseth: it's really about trying to find the rotation, where we can look at four, maybe even five years out and say okay we're going to rotate through these different traits and this different strategies and use different fields to try and continue to mix and match things and. 45 00:06:50.460 --> 00:07:03.240 Andy Nesseth: and know that it's there's given take because you need the porn you know there's a lot of pressure to planet but you know, nobody wins when we got corn down, you know we're losing you know a lot of leaving a lot of bushels in the field. 46 00:07:04.380 --> 00:07:17.220 Andy Nesseth: With for performance to so so it's it's just a constant evolving conversation and and these traps help guide that obviously we're doing some rough digs and we're evaluating lodge form and you'll data but. 47 00:07:17.970 --> 00:07:29.040 Andy Nesseth: This kind of helps guide us where maybe we can maybe push push the rotation out a little bit longer or it's it's it's coming to be and where we need to go to that non host crop so it's just it's all about data points to try and have a. 48 00:07:30.210 --> 00:07:34.950 Andy Nesseth: conversation that's based on on real things and not just assumption so. 49 00:07:36.390 --> 00:07:44.760 Bruce Potter: we've got you know right now we're kind of getting close to that pk catches, for if we look at the greedy models which are. 50 00:07:45.300 --> 00:07:54.720 Bruce Potter: You know kind of a rough guideline but we're going to start trying to float some Hillary probably even this afternoon to see if, in our summer research spots. 51 00:07:55.350 --> 00:08:05.550 Bruce Potter: You know if we get a feel for how well these things over the winter i'm afraid they did fairly well somebody actually sent me a picture of a were or larvae yesterday so unfortunately they're not all dead. 52 00:08:07.410 --> 00:08:08.400 Bruce Potter: And so. 53 00:08:09.780 --> 00:08:17.280 Bruce Potter: Really, I think the point, the point to make now is we're all really, really done managing reforms for this crop. 54 00:08:18.240 --> 00:08:26.940 Bruce Potter: And everything we're doing now is going to be for the 2023 crop whether that's monitoring Beatles. 55 00:08:27.900 --> 00:08:42.420 Bruce Potter: You know either doing whole plant counts or using sticky traps starting to plan for the future, some people might want to try it and do some of the adult beetle control that's kind of a basic proposition. 56 00:08:43.650 --> 00:08:54.420 Bruce Potter: You have to time that that that control to when you start start seeing grab and females out there, if you put it too early you're going to miss a lot of the emergence and you. 57 00:08:54.960 --> 00:09:01.920 Bruce Potter: kill mostly males and if you wait too long you're going to have some egg laying and you're probably going to have to treat more than once, but. 58 00:09:03.330 --> 00:09:13.560 Bruce Potter: Even that's even that's a practice to manage, for the following year, so right now guys should be starting to think about really managing rooms for 2023 I think. 59 00:09:14.490 --> 00:09:24.780 Ryan P Miller: So so Bruce if we lose a trade and a field if a population builds so you've got you know decent resistance to a given trait. 60 00:09:27.180 --> 00:09:34.410 Ryan P Miller: Is that gone forever or what what's your kind of perspective as far as you know, can you get back to that trait or. 61 00:09:36.030 --> 00:09:38.610 Bruce Potter: Well, from from what we've seen at least. 62 00:09:39.870 --> 00:09:49.500 Bruce Potter: You know i'm not i'm not so clear on the herky lex but I suspect it's going to be the same way, but all the try three retreats really we do arcade. 63 00:09:50.160 --> 00:10:06.960 Bruce Potter: Young guard there's cross resistance and there's a lot of in most cases there's some cross resistance and actually there's no evidence that those resistant Beatles or any less fit than the susceptible Beatles so there's no reason for that that. 64 00:10:07.980 --> 00:10:14.640 Bruce Potter: Resistance to reverse itself, so I think once you have it you're kind of stuck with it and then you're basically. 65 00:10:16.500 --> 00:10:20.550 Bruce Potter: Trying to keep those those populations in that field low. 66 00:10:21.750 --> 00:10:26.400 Bruce Potter: So, even though that resistance is there the damage or the crop injury is minimized. 67 00:10:27.930 --> 00:10:37.290 Ryan P Miller: So, at some point in the future, though, you can bring that trait back in potentially but you're going to see resistance build again or population that's resistant build, I guess, maybe. 68 00:10:38.070 --> 00:10:43.740 Bruce Potter: What well yeah it's I mean you're you know if you just as that population bills. 69 00:10:44.340 --> 00:10:59.490 Bruce Potter: you're going to start seeing the resistance develop we've had in Southwest Minnesota and rock county the first resistant fields I was aware of was 2009 which was pretty close to after that trait was released or introduced. 70 00:11:01.260 --> 00:11:08.130 Bruce Potter: And you know, we had a kind of a build up 2009 2010 2012 was a dry your real. 71 00:11:09.180 --> 00:11:16.470 Bruce Potter: Can we had quite a few problems, and then it kind of disappeared, but the reason the problems disappeared, where the rural populations were. 72 00:11:16.830 --> 00:11:25.950 Bruce Potter: were down, not because the trade was gone is just the populations were down so it's still there it's just kind of gets suppressed when be it'll pop up. 73 00:11:27.720 --> 00:11:38.220 David A Nicolai: So Andy if you are working with one of your clients, say, for example, and maybe it's a an area of farm that you don't have a lot of familiarity with but. 74 00:11:38.580 --> 00:11:48.030 David A Nicolai: um do you have some best management practices as far as rotating even may perhaps her in a corn on corn situation in terms of traits. 75 00:11:48.540 --> 00:11:56.400 David A Nicolai: When you maybe don't have a lot of the trap data to work with what's what's been kind of your go to or some somewhat successful. 76 00:11:56.970 --> 00:12:07.860 David A Nicolai: recipe, so to speak, you look you look at a number of things, obviously in yield but what's your thoughts on on rotation here when it comes to traits over time, with some of the growers. 77 00:12:08.400 --> 00:12:16.950 Andy Nesseth: yeah thanks for the question we typically you know for coming have a non host crop we're going to plant a double pro hybrid corn room trade in it. 78 00:12:17.880 --> 00:12:25.410 Andy Nesseth: purely because we're we're making that assumption that we don't have a lot of extended daya pause and the pressure is going to be relatively low. 79 00:12:26.370 --> 00:12:32.400 Andy Nesseth: i'm fortunate enough to network and a lot areas where I don't know where I know what how much corn is around right so that that's going to. 80 00:12:33.420 --> 00:12:44.550 Andy Nesseth: dictate some of that, but then I guess our our next strategy, then, be to go double pro for if we're going to plan continuous corn, that is, go back to a double pro but with an insecticide option. 81 00:12:45.000 --> 00:12:49.620 Andy Nesseth: You know that again depends on whether the producer has that technology on the planner. 82 00:12:50.400 --> 00:12:57.120 Andy Nesseth: From there, we would probably go to a smart stack I have read if we're going to continue to have corn and from there. 83 00:12:57.600 --> 00:13:07.380 Andy Nesseth: that's where obviously at that point we're going to have some some data into management that's where we start looking at you know, maybe another smart stack again but at that point we really start with you know, trying to. 84 00:13:07.830 --> 00:13:14.730 Andy Nesseth: look back to a non host prop so we talked about that four or five year window that's where we're trying to mix and match a little bit of those traits. 85 00:13:15.060 --> 00:13:30.450 Andy Nesseth: and management strategy insecticide and the line on the trades, before moving back to a non most crop so that's been as successful as anything, probably the best thing we can do Dave is just have adequate rainfall, so the feeding that we do have we get decent regeneration. 86 00:13:31.650 --> 00:13:38.730 Andy Nesseth: But you know that's out of our control, so we got to control everything else, the best we can we're not big fans of doing the over the top. 87 00:13:39.270 --> 00:13:48.990 Andy Nesseth: futile bombing, as they say, with with with a fungicide application, we just find that to be pretty difficult to do is as Bruce alluded to it's kind of trying to thread a needle there that's, not to say it's not done. 88 00:13:50.010 --> 00:14:01.950 Andy Nesseth: You know a lot of my clients are known to want to revenge kill, you know after seeing a rough year they want, they want to do what they can and do some beetle bombing, but we really try and reserve that often for. 89 00:14:03.210 --> 00:14:12.690 Andy Nesseth: fields that we absolutely know we're going to go to corn on corn, but it's really the probably the lowest thing on the list in terms of successful strategies. 90 00:14:12.960 --> 00:14:21.150 David A Nicolai: Why, I think you anticipated two of our three questions that just came in one of them one was on all your controls and card right when we touched on that. 91 00:14:22.020 --> 00:14:30.270 David A Nicolai: We talked a little bit about crop rotation certainly I would you would both agree Bruce and and he bought alfalfa being an offer an opportunity for that. 92 00:14:30.930 --> 00:14:45.900 David A Nicolai: In terms of crop rotation there with the other question that came in was Have you had much work, I think this is with rephrasing a soiled our DNA to determine future potentials but i'm not quite sure on the context of that question Bruce. 93 00:14:46.500 --> 00:14:58.230 Bruce Potter: I think well there's a company that that is looking at things like SDN DNA and corn room DNA in the soil in soil samples and then trying to. 94 00:14:59.670 --> 00:15:06.570 Bruce Potter: determine what you know from that determining how what's your risk is I don't know how well that works I haven't tried it myself. 95 00:15:08.340 --> 00:15:11.280 Bruce Potter: I think it's you know you've been good. 96 00:15:11.700 --> 00:15:14.430 Andy Nesseth: we've used that technology, a little better try. 97 00:15:15.540 --> 00:15:30.630 Andy Nesseth: You know I think I think it's interesting I don't know if it's particularly I don't want to endorse or condemn at this point, but I think it's interesting information I don't think it's any more effective than what we're currently doing, I guess, as way I would put that. 98 00:15:31.440 --> 00:15:36.720 Ryan P Miller: So Andy are you focused mostly on scouting and trapping is the monitoring methods. 99 00:15:36.810 --> 00:15:38.430 Andy Nesseth: yeah that's that's that's primarily. 100 00:15:40.410 --> 00:15:49.260 Andy Nesseth: we've supplement it with some of that DNA sampling as well, but it more or less confirmed what the scouting and trapping was already is already telling us. 101 00:15:50.820 --> 00:16:02.700 David A Nicolai: Are there any thresholds and I post this as always spent all the old data, but you know Beatles per plant here I mean we're not into you know into the area now yet where obviously where we're. 102 00:16:03.750 --> 00:16:15.270 David A Nicolai: Tackling a second here but thinking ahead here for this season, if people are going to go out look at Beatles Beatles per plant any any thoughts on thoughts on that I know the research is sometimes variable. 103 00:16:16.650 --> 00:16:17.310 Bruce Potter: You mean, as far as. 104 00:16:17.340 --> 00:16:22.830 David A Nicolai: Well, as far well, I mean I gotta hand count Besides, I mean we know, basically, the number is a. 105 00:16:22.830 --> 00:16:26.340 Bruce Potter: beetle per plant and you've got your at risk for. 106 00:16:28.350 --> 00:16:29.910 Bruce Potter: Our ministry, the following year. 107 00:16:31.050 --> 00:16:41.880 Bruce Potter: It kind of changes, a little bit with northern corn rooms and extended diet pause because you're you're going to have another year of mortality in there and that sort of thing but but. 108 00:16:42.600 --> 00:16:50.400 Bruce Potter: it's three quarters for being beetle per plant if it's if it's a second year corn and beetle per plant if it's if it's continuous corn. 109 00:16:51.210 --> 00:17:08.190 Bruce Potter: And the only thing you got to be a little worried about it, careful there is is you know what the weather conditions are like can change how active the Beatles are and if you're counting during the you know 10 to three year the middle of the day, that's it's going to be pretty consistent. 110 00:17:08.550 --> 00:17:19.890 David A Nicolai: But we're coming towards the end I got one last question that came in and there's a late planning carne aggravate the problem and certainly we had this this year Andy Andrews any thoughts on here as we close out this segment. 111 00:17:20.790 --> 00:17:32.520 Bruce Potter: On like one word will change things so for one thing if you've got a room infestation in the field and you're in those eggs are hatching and you've got smaller corn routes. 112 00:17:33.480 --> 00:17:42.570 Bruce Potter: That impact on that of that early feeding if the larvae can get to those roots is going to probably be a little more pronounced is kind of like having a small rivet hybrid in there. 113 00:17:43.230 --> 00:17:47.880 Bruce Potter: The other thing that's going to do is if you've got some fields that are late planet and some that are not. 114 00:17:49.050 --> 00:17:51.060 Bruce Potter: Those late planted fields are going to sell. 115 00:17:52.350 --> 00:18:01.080 Bruce Potter: silk a little later and you're going to draw Beatles into those fields so you're going to get especially once those beetles get crowded and. 116 00:18:03.150 --> 00:18:08.760 Bruce Potter: You know run and start running out of good Green silks in the in the fields around some particularly. 117 00:18:09.810 --> 00:18:21.030 David A Nicolai: I think Andy we have you maybe put your email in the in the chat or whatever so out, they have questions on that any last things here before we switch over Randy that you wanted to mention that we. 118 00:18:21.750 --> 00:18:36.060 David A Nicolai: didn't touch on in terms of that, but we appreciate that we'll see if we can get it to rain, a little bit more at the proper time in some areas of Minnesota getting getting got on the dry side Bruce any last thoughts here before we bring Dr melba again. 119 00:18:36.480 --> 00:18:45.600 Bruce Potter: No, I think the only thing i'd like to mention if somebody is interested in participating in that career trapping program we're just getting ready to start start sending out the traps now. 120 00:18:46.230 --> 00:18:59.730 Bruce Potter: contact me be potter@human.edu and you know we'd be happy to have volunteers, the more the more traps, we got out through the better picture we're going to have what's happened in Minnesota. 121 00:19:00.240 --> 00:19:14.160 David A Nicolai: Okay well we're going to ask Dean to unmute unmute yourself there and then Andy and Bruce Lee can certainly hang on i'm going to turn it over kind of to my co host here Ryan down in southeast Minnesota. 122 00:19:15.660 --> 00:19:24.930 David A Nicolai: The kind of the segments, here we think about cars spot on car and everything else going on here so Ryan you've certainly been in the middle of some of that, but you know. 123 00:19:25.770 --> 00:19:35.100 David A Nicolai: let's talk a little bit about what we had for for craft scrapping season right now in terms of the 2022 season here so Ryan take it away. 124 00:19:36.000 --> 00:19:40.500 Ryan P Miller: Alright, so well Dean joined us here just kind of get perspective from Dean. 125 00:19:42.180 --> 00:19:46.890 Ryan P Miller: As far as the year ago is whatever you've been seeing for for plant diseases so far. 126 00:19:48.300 --> 00:19:57.360 Dean K Malvick: Well, fortunately, and i've been hearing very little about the significant problems that were in that in between period now and we usually don't see a lot of problems. 127 00:19:58.230 --> 00:20:04.530 Dean K Malvick: we're past, at least in many fields on the seedling most susceptible stage with a lot of profit. 128 00:20:05.400 --> 00:20:13.380 Dean K Malvick: that's growing fast and and not really susceptible to most problems, right now, although some of the problems that we see later on actually getting established now. 129 00:20:13.890 --> 00:20:32.940 Dean K Malvick: Such as SDS so again, we have heard some issues with Stan establishment due to various causes sometimes the diagnosis still in progress to figure out what the real cause was so you know that's that's still certainly an issue and but I guess looking forward. 130 00:20:34.620 --> 00:20:44.760 Dean K Malvick: let's think about savings and put some of the bigger risks in one of them are prominent ones in at least big chunks of the southern part of the state of sudden death syndrome. 131 00:20:45.900 --> 00:20:54.450 Dean K Malvick: And we certainly there are places where we're set up for a problem because rain earlier on, but we need to keep getting rain. 132 00:20:55.500 --> 00:21:07.170 Dean K Malvick: Where that problem really establishes itself, for example, I have research studies done in secret, we haven't irrigated them, but certainly they're showing their early season symptoms like we like to see in our research studies. 133 00:21:07.680 --> 00:21:20.550 Dean K Malvick: So the fungus is established diseases established and we need a sufficient rain throughout July and August to really get the disease to be a problem and that's true of other diseases to. 134 00:21:21.990 --> 00:21:25.410 Dean K Malvick: So so matter of watch and look at this point yeah. 135 00:21:25.440 --> 00:21:33.960 Ryan P Miller: So so Dean, what if a grower consult or someone's out looking for SDS early season symptoms, what are they looking for this point in the season. 136 00:21:34.650 --> 00:21:41.160 Dean K Malvick: yeah the typical interview panel closes on the leaflets, at the very early stages, like the one. 137 00:21:42.360 --> 00:21:51.060 Dean K Malvick: And you know even in our inoculated research trials, we see a very low percentage like less than 1% of the plant showing or symptoms. 138 00:21:51.630 --> 00:22:03.630 Dean K Malvick: Whereas later on we'll see you know, maybe 50 to 70% plants and they'll same plots developing symptoms but we like to see just a few of the plants and symptoms, to be sure that we got the infection started. 139 00:22:04.410 --> 00:22:07.530 Dean K Malvick: And that's often shows up much more later. 140 00:22:08.010 --> 00:22:22.050 Ryan P Miller: So the incidence per plant is really low right now so you're gonna you're really it's kind of like finding a needle in a haystack maybe you know, relying on some of your past information on where the disease has been a problem in the past, would be maybe a strategy. 141 00:22:22.290 --> 00:22:28.590 Dean K Malvick: yeah that's right that's a better indicator to try to go to the field and find it, although again. 142 00:22:30.180 --> 00:22:38.430 Dean K Malvick: If it's if it's really developing to the problem stage, I think you know one or 200 plants will probably be showing it at least. 143 00:22:40.800 --> 00:22:41.070 Ryan P Miller: and 144 00:22:41.460 --> 00:22:42.000 Ryan P Miller: I remember. 145 00:22:42.060 --> 00:22:49.260 Ryan P Miller: You said some things you in the past about heavy rain falls in how those lineup and kind of. 146 00:22:50.490 --> 00:22:56.190 Ryan P Miller: Increasing your risk, as far as seeing this disease, I think there was some guidelines, you had in the past with. 147 00:22:57.390 --> 00:23:01.950 Ryan P Miller: sort of these real heavy rains and when we tend to see more problems with. 148 00:23:03.150 --> 00:23:03.540 Ryan P Miller: You know. 149 00:23:04.740 --> 00:23:07.260 Ryan P Miller: With the disease and, in general, I guess. 150 00:23:07.860 --> 00:23:24.420 Dean K Malvick: yeah that's that's kind of a general observation cross we can't southern Minnesota certainly across Illinois and iowa as well, we have conditioned suitable to get the infection of SDS started, which is usually within two to three weeks after planting probably. 151 00:23:25.560 --> 00:23:36.960 Dean K Malvick: If they're heavy rain falls scattered throughout the summer late June throughout July early August that really seems to promote the disease to become worse than it is otherwise. 152 00:23:37.650 --> 00:23:46.440 Dean K Malvick: Although I can't say that a regular rainfalls will also contribute the same amount, but but there's a patterns and shown for a number of places. 153 00:23:47.520 --> 00:23:56.220 Ryan P Miller: Okay, so now and I kind of switching gears and new disease least permitted, so the past couple of years, looking at this corn power spot. 154 00:23:58.560 --> 00:24:08.670 Ryan P Miller: Do you have a sense this year, are we going to have potential again and where is that potential at in terms of risk level and what should people be doing I guess right now. 155 00:24:09.120 --> 00:24:19.890 Dean K Malvick: yeah yeah right now there's there's there's nothing we can give you know the disease is it's definitely coming you know, in the southeast where you are right. 156 00:24:20.370 --> 00:24:31.470 Dean K Malvick: it's pretty well established over a big part of that corner of the state now, and I think, as many of you know you've seen our distribution maps confronting me up as far as, at least as Stearns county. 157 00:24:32.340 --> 00:24:43.140 Dean K Malvick: And as far West, as was seeker maybe a little bit further West but that's only where we found it and those fringe counties were only at extremely low levels, very layton sees booster. 158 00:24:44.010 --> 00:24:50.610 Dean K Malvick: But it does indicate that the disease is spread and established probably further than we really know. 159 00:24:51.300 --> 00:24:55.230 Dean K Malvick: What that means for disease development this year it's very hard to predict. 160 00:24:55.830 --> 00:25:09.930 Dean K Malvick: Again I think we're pretty sure that a number of the fields in areas in southeast Minnesota where it's been prevalent the last three years it'll come back again, especially if we have sufficient rainfall, so if it's a very dry August, probably see very little spot. 161 00:25:11.220 --> 00:25:12.690 Dean K Malvick: So so that's. 162 00:25:14.100 --> 00:25:22.650 Dean K Malvick: that's kind of what we know about the distribution limited but certainly the risk is higher in the southeast but it's increasing up in the central Minnesota too. 163 00:25:23.430 --> 00:25:34.620 Ryan P Miller: And I know Dean, and another thing, maybe the address is in se The other issue we've got is that you know, we do have a heavy base of corn so we've got a lot of livestock and. 164 00:25:34.950 --> 00:25:37.590 Ryan P Miller: A need for corn production, so a lot of these fields, end up. 165 00:25:38.760 --> 00:25:47.130 Ryan P Miller: Being corn production multiple years and maybe that's a contributing factor to seeing seeing this particular problem spread. 166 00:25:47.730 --> 00:25:57.330 Dean K Malvick: yeah and oddly it is and the other thing I guess thinking about where we are now we're at the end of June we've never seen symptoms in Minnesota before the third. 167 00:25:57.870 --> 00:26:08.850 Dean K Malvick: And third week of July so late July in far southeastern part of the state where it's established by heard that they found it in indiana as of last week. 168 00:26:09.540 --> 00:26:25.950 Dean K Malvick: indiana you know they're they're certainly had us in planting there and I think in degree days as well, but it can develop early, although rarely have seen the biggest problem occurs in August that's when that disease really takes off. 169 00:26:27.540 --> 00:26:33.120 David A Nicolai: So there's a there's a question actually for one of our co workers angie Peltier put in a little bit about fungicides and that. 170 00:26:33.660 --> 00:26:43.320 David A Nicolai: That leads into other fungicide use, but I know we've had webinars in the past, where we talked about this team, maybe you know, probably a limited research here but. 171 00:26:44.070 --> 00:26:54.750 David A Nicolai: I don't want any guideposts that you can do give us a quick update on whether or not you fungicides, are we better off with with variety, but if you are going to do, fungicides. 172 00:26:56.130 --> 00:26:59.310 David A Nicolai: The timing has to be correct, as well, even for a car spot. 173 00:27:00.360 --> 00:27:09.840 Dean K Malvick: yeah that's that's right, you know for a lot of our diseases, we have some level of resistance that's useful least suppressing disease and keeping them from reaching high levels. 174 00:27:10.740 --> 00:27:19.170 Dean K Malvick: guitar spot, we have some hybrids out there now that are showing less susceptibility than others, although every hybrid still show some level of sustainability. 175 00:27:20.100 --> 00:27:29.880 Dean K Malvick: And you know that's going to change more in the future we'll have more and more resistance, but right now, when they were at the early stages, I think of identifying hybrids that that really are beneficial and I parsed by the government. 176 00:27:31.020 --> 00:27:34.830 Dean K Malvick: But the ungodly I think there are some out there that are better than others. 177 00:27:35.880 --> 00:27:45.240 Dean K Malvick: Be that as it is you know, we have our fields established as they are, you know fortune, we can look in our you know hybrid trials this summer. 178 00:27:45.930 --> 00:27:52.020 Dean K Malvick: get some idea of how they compare to our spot pressure where it starts to develop so that's one thing to think about. 179 00:27:52.980 --> 00:28:03.360 Dean K Malvick: And as far as fungicides David mentioned that's one of our major ways to control our spot right now it's been shown to be pretty effective and other states and the timing. 180 00:28:04.380 --> 00:28:05.760 Dean K Malvick: And still under some debate. 181 00:28:07.260 --> 00:28:16.020 Dean K Malvick: Really timings don't seem to serve a lot of benefit that hassling our one stage is probably an optimal single time from what we know now. 182 00:28:16.800 --> 00:28:26.070 Dean K Malvick: But there are environments where maybe a later application might be more beneficial if the disease is not well established at the key, for example. 183 00:28:26.730 --> 00:28:36.210 Dean K Malvick: Because the disease, as I mentioned before doesn't really seem to ramp up later in the season, so we can lose protection from the fungicides within three or four weeks. 184 00:28:37.710 --> 00:28:44.580 Dean K Malvick: At least the tar spot based on data and other states so here and there, there's actually requirements and seamless for a second application. 185 00:28:45.360 --> 00:28:57.750 Dean K Malvick: So if we don't have sufficient our spot early and then what I mean by early as vt and we're concerned about it, we might want to delay it a little bit so help reduce the likelihood of a need for a second application. 186 00:28:58.530 --> 00:29:14.820 David A Nicolai: I just wanted to quickly mention about fungicides we're almost to July one here but let's switch crafts, just a little bit whether it's white mold and soybeans you're trying to be preventative on with a fungicide situation or maybe frog I leave spot but. 187 00:29:15.960 --> 00:29:20.970 David A Nicolai: Is there an issue here on timing and we're blossoming are blooming there are days daylight. 188 00:29:21.060 --> 00:29:22.110 David A Nicolai: is changing here. 189 00:29:23.730 --> 00:29:27.090 David A Nicolai: Otherwise, if you're too late, is it just horse out of the barn, so to speak. 190 00:29:27.390 --> 00:29:34.740 Dean K Malvick: mm hmm yeah you know mentioned went gold and that's certainly a major target for some fungicide applications in Minnesota. 191 00:29:35.670 --> 00:29:44.760 Dean K Malvick: And we need to get the fungicide on early to prevent most of that infection because one swipe mobile really gets established you can't stop it very well with with a fungicide. 192 00:29:45.540 --> 00:29:55.500 Dean K Malvick: So early flowering the one season are one or two right in that period, this is the optimal time for a single application. 193 00:29:56.760 --> 00:30:03.510 Dean K Malvick: And sometimes a second application at our three is very helpful to a little bit of course it gets costly. 194 00:30:05.610 --> 00:30:21.930 Dean K Malvick: So that's something to keep in mind if you're thinking about a white male fungicide application no don't don't wait casts the time when the roles are filling in the plants and flowers, maybe are one or two more likely probably really hard to. 195 00:30:24.750 --> 00:30:25.050 David A Nicolai: say. 196 00:30:25.860 --> 00:30:32.790 Dean K Malvick: What I think Dave you mentioned Friday spots or another leaf disease this leaf disease that's occurring across the state that's been increasing. 197 00:30:33.540 --> 00:30:43.200 Dean K Malvick: Again, we need lots of rain to really get that one going in a problematic levels, but that one is something we can scout for and then respond with a little bit better than we can do white. 198 00:30:45.660 --> 00:30:53.730 Ryan P Miller: Indeed, I posted a couple links in the in the chat line here for some advocacy tables from this crop protection network. 199 00:30:54.720 --> 00:31:00.930 Ryan P Miller: Good Sir sort of a consortium of folks kind of rating these different fungicide products for use and. 200 00:31:01.980 --> 00:31:09.270 Ryan P Miller: To protect against different diseases, and I think you know you've been pretty supportive of that those publications in the past for. 201 00:31:10.170 --> 00:31:21.510 Ryan P Miller: kind of product selection, do you want to make any comments related to picking products for these diseases as far as maybe rotation of products, or what are you looking at in terms of. 202 00:31:23.730 --> 00:31:34.830 Ryan P Miller: You know, being the most beneficial and probably the best from a best management standpoint, are we, you know, using a product with multiple action or single or how are you assessing that. 203 00:31:35.550 --> 00:31:51.840 Dean K Malvick: yeah that's that's a good question but also a complicated one each disease has its optimal punch sign ideally we'd like a fungicide that has a broad spectrum and many of them do, but if we pick a disease like white mold you know, there are. 204 00:31:52.950 --> 00:32:02.310 Dean K Malvick: A handful of products that seem to perform pretty well and pretty consistently and they are identifying that crop protection that work publication that you mentioned. 205 00:32:04.050 --> 00:32:14.280 Dean K Malvick: So there, there are several that that are fairly consistent and for tourist spot a number of our modern multi own fungicides seem to work very well. 206 00:32:16.770 --> 00:32:25.230 Dean K Malvick: There is more than just a handful I think that our lives would be very effective if we need to use those products so. 207 00:32:25.620 --> 00:32:34.200 Ryan P Miller: For a girl scouting for frog I leave spot maybe one last question, you know what do we got to be concerned with with product selection with that particular disease and. 208 00:32:35.670 --> 00:32:51.780 Dean K Malvick: that's a good point that brings up the whole topic of fun side resistance, and so the fungus that's causing the frog on the spot, Sir casper fungus different than a foreigner that are saving version but surprised, but it's why the resistant to the civilian. 209 00:32:53.160 --> 00:33:06.750 Dean K Malvick: classic fungicides, so those fungicides do not work well at all we're Braga the spot, so if we use a mixture which most of our best fungicides are. 210 00:33:07.320 --> 00:33:13.380 Dean K Malvick: Make sure we use one with a high concentration of nasty a Chai or a tribal fungicide mixed in there. 211 00:33:14.220 --> 00:33:30.120 Dean K Malvick: Some of the products that are mixed years don't have enough for that other product to really be effective for progress so keep that in mind we've been testing the fungus across Minnesota nearly all the isolates we find are resistant to the it's truly an fungicides. 212 00:33:31.410 --> 00:33:47.640 David A Nicolai: Certainly there's more information on the University of Minnesota extension websites under the under the crop area soybean and diseases, so if people go to those sites second look at more of the cultural of the biology identification things that you've. 213 00:33:48.750 --> 00:33:53.400 David A Nicolai: listed before on on that particular area so Dean that's available to folks as well. 214 00:33:54.150 --> 00:34:05.910 David A Nicolai: We want to thank our panelists for today and appreciate them coming on board, particularly our special guest Andy necessary was a part owner crop consultant. 215 00:34:06.780 --> 00:34:19.320 David A Nicolai: And advisor with extended services like field Minnesota obviously as well Bruce potter out of Lambert 10 in our Southwest experiment station dealing with. 216 00:34:19.950 --> 00:34:28.800 David A Nicolai: Integrated Pest Management and so we appreciate having those folks on hand I any last questions or points Ryan before we close out. 217 00:34:30.600 --> 00:34:37.110 David A Nicolai: Alright, so it sounds good, we have a very short for question survey, so if you take the time to fill it out at the end, that would be great. 218 00:34:37.350 --> 00:34:43.110 David A Nicolai: We want to thank again our sponsors Minnesota so i've been researching and promotion Council on with the Minnesota corn growers. 219 00:34:43.530 --> 00:34:56.340 David A Nicolai: Research and promotion Council as well we'll be back next week on Wednesday July six at eight o'clock with another current crop growth and development topic at that point in time. 220 00:34:56.850 --> 00:35:08.610 David A Nicolai: So make sure to follow up survey, and if you have any questions and recommendations as we go forward, that would be as well, so with that Ryan that's about all I have unless you have anything else so let's. 221 00:35:08.610 --> 00:35:09.630 David A Nicolai: Close out the Program. 222 00:35:10.020 --> 00:35:17.550 Ryan P Miller: July yeah July six to we have our field day in Rochester So if you want to come down and see some things about weed management herbicides selection. 223 00:35:17.940 --> 00:35:30.960 Ryan P Miller: Certainly Come on, down to the plot area we've had for a few years now, starting at 830 onsite registration with a nine o'clock program wrapping by noon so just another thing an opportunity on on the calendar. 224 00:35:31.350 --> 00:35:34.560 David A Nicolai: yeah and I think there'll be a crap newest article about that here as well. 225 00:35:36.330 --> 00:35:37.470 David A Nicolai: Coming out today so. 226 00:35:37.920 --> 00:35:43.590 David A Nicolai: Look, for that, and then the following week I know on the 13th or excuse me on July. 227 00:35:44.520 --> 00:35:50.820 David A Nicolai: 13 we're going to have a another we'd tour at the Rosemount research and outreach Center along with. 228 00:35:51.150 --> 00:36:00.060 David A Nicolai: Our lead scientist Dr Dillon stringy and a lot of good plants on that well and that will be up at Rosemount so i'll look for the craft news article about that the week following. 229 00:36:00.630 --> 00:36:10.680 David A Nicolai: Thank you again for attending We appreciate that and and we're signing off for now and we'll see you a couple of different places here the month of July, but, but the webinar will continue again. 230 00:36:11.400 --> 00:36:24.090 David A Nicolai: With topics next Wednesday morning at eight o'clock which would be July six, so thank you very much to all of our panelists appreciate that and thanks again Ryan and we'll talk to you folks later.