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Posts From Don Cook, Research Entomologist

Southwestern Corn Borer Traps, August 1, 2020

Southwestern Corn Borer Traps, August 1, 2020

🕔19:05, 31.Jul 2020

Southwestern corn borer trap counts increased again this week in several counties.  Traps in Leflore, Carroll, and Tate counties exceeded the current threshold of 100 per trap. As a reminder, corn is considered safe from yield losses from southwestern corn

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Southwestern Corn Borer Traps – July 25, 2020

Southwestern Corn Borer Traps – July 25, 2020

🕔20:23, 24.Jul 2020

Overall, southwestern corn borer trap numbers are beginning to decline.  Only one location in Leflore county exceeded the threshold of 100 per trap this week.

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The Use of Biological Insecticides for Bollworm Management in Soybean

The Use of Biological Insecticides for Bollworm Management in Soybean

🕔13:22, 24.Jul 2020

There are several biological insecticide options labelled in soybean; however, the most readily available and widely used product is Heligen. In the last week, many people have asked about the use of Heligen with the low bollworm numbers showing up

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Southwestern Corn Borer, July 18, 2020

Southwestern Corn Borer, July 18, 2020

🕔21:07, 17.Jul 2020

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2020 Bollworm Management in Cotton and Soybean

2020 Bollworm Management in Cotton and Soybean

🕔16:35, 17.Jul 2020

This last week there have been reports of bollworm eggs starting to show up in Mississippi Cotton. Generally speaking, in a normal year the bollworm flight would begin around July 4th, and peak around the 15th. The wet spring pushed

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Southwestern Corn Borer Traps, July 11, 2020

Southwestern Corn Borer Traps, July 11, 2020

🕔20:13, 11.Jul 2020

Trap count continue to increase in many regions of the state, but few are at threshold.  As a note, the 2 traps that captured high numbers of moths in Tate county last week were knocked down this week and are

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Rainfall and Insecticide Efficacy

Rainfall and Insecticide Efficacy

🕔14:47, 8.Jul 2020

With the increase of rain showers this week and tarnished plant bug numbers starting to pick up in some places, now is a good time to revisit the impact of rainfall on insecticide performance. Rainfastness is a complex topic because

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Southwestern Corn Borer Traps, July 4, 2020

Southwestern Corn Borer Traps, July 4, 2020

🕔20:25, 3.Jul 2020

Trap counts for southwestern corn borer are highly variable this week.  We did have two locations in Tate and Leflore Counties that exceeded the threshold this week.  As a reminder, thresholds for southwestern corn borer suggest spraying non-Bt corn 7

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Southwestern Corn Borer Traps, June 27, 2020

Southwestern Corn Borer Traps, June 27, 2020

🕔08:12, 27.Jun 2020

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Southwestern Corn Borer Traps, June 20, 2020

Southwestern Corn Borer Traps, June 20, 2020

🕔14:38, 19.Jun 2020

This is our first week of reporting southwestern corn borer trap counts.  We had some numbers reported last week but they were extremely low (0-2).  This week, a couple of traps started to pick up more moths, so we may

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Early Season Plant Bug Management Utilizing Square Retention

Early Season Plant Bug Management Utilizing Square Retention

🕔15:27, 12.Jun 2020

With the season progressing and the onset of pinhead square, square retention will be an important factor in early season plant bug management.  Prior to bloom, monitoring square retention is highly recommended as an additional tool to compliment sweep net

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Foliar Thrips Control Options in Cotton: Pros and Cons

Foliar Thrips Control Options in Cotton: Pros and Cons

🕔07:50, 30.May 2020

Thrips pressure to date has been a mixed bag. Some areas have reported treatable numbers, while in other areas seed treatments have held well. Going forward, should you need to treat thrips with a foliar insecticide there are a few

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Calibration of In-Furrow Sprays

Calibration of In-Furrow Sprays

🕔09:31, 2.May 2020

As we finally move into drier conditions and cotton planting is starting full swing, more and more folks are adopting in-furrow sprays for thrips control. We have had several questions regarding calibration of in-furrow sprays. Below are are few tips

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Redbanded Stink Bug Survey: Week of 4/27/20

Redbanded Stink Bug Survey: Week of 4/27/20

🕔14:49, 1.May 2020

We have sampled enough areas at this point to feel reasonably certain that some areas will experience issues with RBSB this season. To what extent is yet to be determined. We will likely not continue the weekly surveys in weeks

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Redbanded Stink Bug Survey: Week of 4/20/20

Redbanded Stink Bug Survey: Week of 4/20/20

🕔13:52, 24.Apr 2020

*Each week we sample, we will add to the previous weeks post with updated map and new counties This year has been unusual to say the least with the COVID-19 outbreak. During this time, worker availability has become our limiting

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Redbanded Stink Bug Survey 4/13/20

Redbanded Stink Bug Survey 4/13/20

🕔08:24, 17.Apr 2020

*Each week we sample, we will add to the previous weeks post with updated map and new counties This year has been unusual to say the least with the COVID-19 outbreak. During this time, worker availability has become our limiting

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Bollworm Outlook for 2020

Bollworm Outlook for 2020

🕔09:35, 15.Apr 2020

The 2019 season was one of the most challenging years we have had from a bollworm standpoint in both cotton and soybeans.  The issue was not from a numbers standpoint where the numbers overwhelmed the traits and foliar insecticides.  It

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2020 Grain Sorghum Hybrid Suggestions

2020 Grain Sorghum Hybrid Suggestions

🕔12:01, 9.Apr 2020

This article lists those grain sorghum hybrids which have produced superior yields in the Mississippi Grain Sorghum Hybrid Trials. This information should improve your ability to select well-adapted sorghum hybrids for your farm based on independent performance testing.

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True Armyworm and Stink Bug in Wheat

True Armyworm and Stink Bug in Wheat

🕔07:36, 9.Apr 2020

Armyworms: Over the last few days we have had several reports of true armyworms showing up in wheat. Most of the calls received so far have reported numerous worms at the ground level starting to defoliate up the plant. Once

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True Armyworms in Corn

True Armyworms in Corn

🕔07:34, 9.Apr 2020

We have gotten numerous calls over the last week about true armyworms in seedling corn. Although this is not extremely unusual, the widespread occurrence of high true armyworm numbers across the southern region in wheat and corn (and grass in

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Redbanded Stink Bug Survey 4/6/20

Redbanded Stink Bug Survey 4/6/20

🕔07:20, 9.Apr 2020

*Each week we sample, we will add to the previous weeks post with updated map and new counties This year has been unusual to say the least with the COVID-19 outbreak. During this time, worker availability has become our limiting

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Redbanded Stink Bug Survey 4/2/20

Redbanded Stink Bug Survey 4/2/20

🕔09:12, 2.Apr 2020

This year has been unusual to say the least with the COVID-19 outbreak. During this time, worker availability has become our limiting factor.  It has ultimately limited our ability to conduct as many state wide surveys with student workers at

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2020 Recommendations for Controlling Thrips in Cotton

2020 Recommendations for Controlling Thrips in Cotton

🕔07:00, 18.Mar 2020

Not much has changed since last year in regards to thrips control via insecticide seed treatment. Thrips are considered the number one pest of seedling cotton. Tobacco thrips are the species that are encountered more than 90% of the time

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Redbanded Stink Bug: What to Expect in 2020

Redbanded Stink Bug: What to Expect in 2020

🕔11:08, 13.Mar 2020

We have been getting some questions about what to expect this upcoming season with RBSB in soybean. While we have had a few freezes and cold snaps this winter, we do not believe we have had a cold enough winter

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County Meeting Schedule – February 2020

County Meeting Schedule – February 2020

🕔21:55, 30.Jan 2020

Mississippi State University Extension will be hosting several more county row crop meetings during February of 2020. Each meeting will cover issues specific to the region including management topics on agronomics, insects, weeds, diseases, and economics. A meal will be

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