Entomology Update 8-31-2023: Late Season Clean Up for Loopers, Stink Bugs and Spider Mites

In this week's Entomology Update, Extension Entomologists Ben Thrash and Nick Bateman discuss some late-season clean up for a few lingering pests.

Transcript

[00:01] Intro/Outro

Arkansas Row Crops Radio, providing up to date information and timely recommendations on row crop production in Arkansas.

[00:12] Ben Thrash

Hey, everybody. Today is August 31st. We're about to get in September. It's a little cool this morning. Feels like I'm ready to go duck hunting.

[00:23] Nick Bateman

Yeah.

[00:24] Ben Thrash

But, Nick, I think rice crop’s about done, huh?

[00:31] Nick Bateman

The majority of it, yeah. Some of this latest stuff I've actually had a lot of phone calls, all the stink bugs going into it. I mean, that ain't nothing out of the ordinary, but I still get a couple questions on Endigo, Tenchu, Lambda, those things. And frankly, with the numbers I’m seeing it's going to be an Endigo or Tenchu market. I think if you got a lot of this stuff, as soon as it goes to heading and it seems like they're coming into a lot of this later rice and we're probably going to have use Endigo or Tenchu earlier than what we recommend earlier this year as far as I don't know that you're going to be able to wait till the second two weeks of heading. So there's potential you may have to come back behind those products with Lambda close to termination. Keep in mind with Endigo, we're only legal for one application there. So if the numbers are really bad you might have to look for some Tenchu to follow up with, but generally it seems like so far we’ve done fine even though that's late rice with Endigo and Tenchu, but that's pretty much all that's going on there.

[01:45] Ben Thrash

Yeah. Well you know in cotton I’ve got a bunch of open bolls in my plots, so now it's wrapping up pretty quick. Now if you got anything late planted, later planted cotton out there, you’re probably mostly looking for stink bugs this time of year and, you know, keeping an eye out for spider mites. Remember, you just don't want any that premature defoliation going on there. You want those bolls to be able to get, build all the way out. You remember termination for spider mites is like 650 heat units past cut out. But I’d say if they were really bad and they were starting to work my cotton over, I'd probably even treat them past that. You just don't want premature defoliation out there in your cotton and then I guess I mean loopers and stink bugs in soybeans is kind of I guess the what's going on right now, Nick, and I know you got some stink bug calls and I had got a couple, too.

[02:58] Nick Bateman

Yeah still mainly greens, a few red banded still hanging around down south. We saw them in those looper trials yesterday. Up around McGee, but it doesn't sound like they're snowballing yet on us to where we're going to have to have you know, we're going to be seriously spraying a lot of acres. I guess there's still potential in these latest beans for them and to concentrate in but hopefully this weather front coming in will take care of the loopers for us, but I guess time will tell on that. 

[03:33] Ben Thrash

Yeah, I hope so. I mean, for everybody sake, our looper population seems to be doing pretty good in some of those traisl yesterday. But I did see several diseased ones just kind of looking out there yesterday so I don't know maybe this cool down will help us with that but remember on the stink bugs, green stink bugs you can usually take care of them with Lambda. You know once you hit R6, you double your threshold. If you got high numbers of greens out there, you know, I'd probably recommend running acephate or bifenthrin. Browns, I'm going to try to run acephate or bifenthrin, acephate’s going to be a little better. But another, you had harder to some falls. And I know we had talked about it briefly last week, Nick, and I know I talked to my brother the other day and I think he had been planning a few small fall army worms out in some of his hay pasture.

[04:36] Nick Bateman

Yeah, it seems like this year they're following the trend of being a fall army worm and not a mid-summer army worm. You know there's been a few lingering around. We had them calls in rice what was that like late July, and then now they just kind of seem to be on turn rows, but it's not every one of them and have had a call or two on millet this week so that would be one of my bigger concern is if I spent time and money on food plots, I'd be keeping an eye on them I think, especially, especially right now.

[05:11] Ben Thrash

Yeah. Let's make sure they don't get hammered by these army armyworm.

[05:16] Nick Bateman

Yeah, but by no means are we get calls on super high numbers yet. It’s not like 2021 by no means. But there there's some lingering around.

[05:25] Ben Thrash

Yeah, for sure. Well. that's about all I got, Nick

[05:32] Nick Bateman

I would agree. I would agree.

[05:35] Ben Thrash

Well, if you need us, call us my number 501517383.

[05:40] Nick Bateman

8704568486

[05:44] Ben Thrash

All right. Thank you.

[05:47] Intro/Outro

Arkansas Row Crops Radio is a production of the University of Arkansas System Division of Agriculture. For more information, please contact your local county extension agent or visit uaex.uada.edu