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Green sunflower leaves with two snails present on them.

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.

Green and yellow grasshopper resting on a head of wheat.

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?”

Small black fly on pale skin.

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.

Two caterpillars feeding on soybeans. Top: Green cloverworm caterpillar. Bottom: Alfalfa caterpillar.

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.

Sideview of cut zucchini showing a small white caterpillar with a black head.

Squash Vine Borers Strike Again: This Time They’re in the Produce!

The larvae of the squash vine borer can wreak havoc on squash plants by boring into the stems and slowly killing the plants. Unfortunately, they’ll do even more than that. They will also invade the developing produce.

Four green caterpillars feeding on kale.

Imported Cabbage Worms Are Chewing up My Garden!

One of the worst things to observe in your garden are caterpillars heavily defoliating your plants. But unfortunately, that’s exactly what the imported cabbageworms (cabbage white) caterpillars do.

A bee pollinating a flower.

Pollinators Party

In this lesson, participants will learn how plants reproduce and how to identify pollinators that help plants.

Green beetle larvae with a white stripe running down its body.

Alfalfa Weevil Activity Prediction Update: April 14, 2020

The alfalfa weevil is a major spring insect pest of South Dakota alfalfa. Before 2018, this insect was reported as having large populations throughout much of South Dakota. However, during 2018 and 2019, we received fewer reports of alfalfa weevils, which may have been a result of the cooler and wetter spring conditions that were observed.

A stand of field peas mixed with small grains being grown for forage.

Peas Offer Options in 2020

Current events have made decisions around crop options very difficult this spring. Field peas are an option that may have a fit for some producers.

Green beetle larvae with a white stripe running down its body.

Alfalfa Weevil Activity Prediction Update: April 20, 2020

During the last week, the colder weather that we experienced across South Dakota resulted in very little degree day accumulation. However, in some areas enough degree days have accumulated to potentially lead to adult activity within alfalfa fields.