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Watch Your Squash! Squash Vine Borer Moths Are Active.
Each year vine crops, including squash, zucchini and pumpkin plants, fall victim to squash vine borer larvae feeding inside their stems.
Know Your West Nile Virus Vectors
In some areas of South Dakota, recent precipitation has led to an increase in mosquito activity. To reduce the chances of contracting West Nile Virus, it is important to understand the behavior of the mosquitos capable of vectoring it.
Monitor Soybean and Sunflower for Alfalfa Webworm Caterpillars
In the last couple of weeks, we have received numerous reports of small green caterpillars in soybean and sunflower. The caterpillars have been described as producing webbing and moving extremely quickly when disturbed.
Slugs Causing Issues in Some South Dakota Wheat Fields
Slug activity in wheat fields has been reported in South Dakota. Although slugs are not normally an issue in South Dakota crops, they can pose a threat when field conditions are just right.
Check Alfalfa for Blister Beetle Activity
Blister beetles are becoming more common as we progress through the growing season. Recently, there have been multiple reports of blister beetles showing up in alfalfa fields.
Start Scouting Fields for Thistle Caterpillar Activity
Many of our summer insect pests overwinter in the Southern U.S. and rely on wind currents to travel north in the spring and summer. The thistle caterpillar is one of those pests.
Snails Observed in South Dakota Sunflower
Last week we received reports of snail populations causing issues in South Dakota sunflower fields. Snails are normally not an issue in South Dakota crops but like their slug relatives, they can pose a threat to crops when field conditions are just right.
Grasshoppers Are Causing Concerns in Close-to-Harvest Winter Wheat
During the end of last week, we received reports of grasshoppers feeding on winter wheat that was close to being ready to harvest. One of the questions with the report was, “What insecticide can be sprayed that won’t delay harvest?”
Monitor Livestock, Pets and Yourself for Eye Gnat Activity
While being outside this week, I noticed a lot of small gnats flying around my legs and really bothering my dogs. I caught a few and identified them as eye gnats. Although this pest is considered a nuisance in most cases, it is capable of transmitting diseases and pathogens.
Soybean Defoliators Are Active
It’s that time of the season when numerous defoliating insects can be observed in a single soybean field. Most of the defoliators at this time are green cloverworms and alfalfa caterpillars.