Plains Pest Management News August 28, 2020

 Here's the link to the Plains Pest Management News for August 28, 2020

https://counties.agrilife.org/hale/files/2020/08/August-28-2020.pdf

Several fields moving past economic pest damage this week, others still at risk as pest threat remains.

Photo- Bollworms love to attack below bloom tags where protected and hidden.

Until next week...

Blayne

Info on Leafroller found in Sesame fields in the High Plains

Just wanted to share this information for those who may be growing Sesame in Hale and Swisher Counties.

Article authored by:

Patrick Porter (Extension Entomologist)

Kerry Siders (Extension Agent IPM)

Suhas Vyavhare (Extension Entomologist)

Sesame Leafroller Now Widespread on the High Plains

Sesame leafroller is a major pest of the crop, and we have tracked its movement north this year. This is a new pest for us. Dr. Emi Kimura, our agronomist in Vernon, reported it last week. This week Drs. Qingwu Xue and Jourdan Bell reported it at Bushland, and one of our superb Independent Crop Consultants reported it at Abernathy just north of Lubbock and made comment that he treated the field three weeks ago and now had to treat again. He also just today reported it near Gruver in the northern Panhandle.

Dr. Holly Davis, Extension Entomologist in Weslaco, recently posted a nice blog article and video on sesame leafroller, so I won't duplicate that information here. She conducted an insecticide efficacy trial which showed pyrethroids don't work all that well. She also found that the 8 oz and 12 oz. rates of Prevathon worked very well, and the 8 oz rate did just as good a job. (The difference will be that the 12 oz rate will provide longer residual control.) Blackhawk also worked very well at 1.1 and 2.2 oz, but Blackhawk is not labeled for use on sesame. 

Here are some photos from near Abernathy today.

Thanks,

Blayne

Strawberry Growers Training Info

Those wishing to attend can pre-register here

Thanks,

Blayne

Check out the Phytogen Cotton Variety Trial in Hale County

Hey folks! 

The way things are with restrictions on getting together for field days, we are still not sure we can have all the field days this fall we usually like to.  We may have to economize stops.  Unfortunately, this awesome trial is located off by itself and may not be included in a field day.  So, please go by and take a look at our Hale County Phytogen Cotton Variety Trial.  It is one of several trials we have you might want to take a look at soon.  If we can have a day or a stop here, we certainly will.  But, the Corteva folks have done a great job of labeling our 1^st rep from this trial for you.  So, if you are northeast of Plainview, head east on FM 788 headed toward Providence.  About a mile to a mile and a half inside the Hale County line, look for the signs and plots.  Good stuff to see from a real world situation.

As always, look for our trial write up in our annual IPM report!

Blayne

 

Headworms in Sorghum, too!

Cotton and corn are not the only place to watch for bollworms/corn earworms this week.  Here are some‘headworms’ in sorghum this week.  In most cases, these are all the same pest species, the commonly referenced bollworm.  I use a beat bucket to dislodge and count the pest per head.  We have seen light populations so far, but the threat is there.  Have a great one,

 

Blayne

 

Do you need to spray for fall armyworms?

Lately, we are seeing quite a bit of fall armyworm damage in late-planted whorl stage sorghum.  In the photo, we see a Hale county field with some fall armyworm damage that looked really bad a few weeks ago.  However, this week the worm has moved on, leaving no damage to the head (which is now in boot).  The producer desperately wanted to spray to save the plant from damage, but sorghum can take quite a bit of foliar damage without economic loss.  Here is some evidence to back that up.  These plants experienced about 3-5% foliage loss, but no economic damage. 

Good Luck,

Blayne