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Content by Patrick Wagner

Seecorn maggot larva feeding on a seed in a field.

Seedcorn Maggot Degree Day Activity Estimates: May 12, 2022

For most of South Dakota, peak emergence of the overwintering seedcorn maggot population has passed. See our latest activity estimates for the second generation.

Top profile of an insect with an orange head and second body segment, and a shiny, almost iridescent black abdomen.

Ground Beetles: Predators That Provide Benefits in Agricultural Landscapes

For agroecosystems and gardens struggling with weeds and insect pests, ground beetles can be a beneficial predator. Learn the benefits they can bring to your landscape this growing season.

Seecorn maggot larva feeding on a seed in a field.

Seedcorn Maggot Degree Day Activity Estimates: May 5, 2022

Corn and soybean planted during cool conditions can be at risk for seedcorn maggot infestation. Stay ahead of infestations by viewing latest activity estimates from around the state.

Moth with green metallic wings and an orange body resting on a green leaf.

Squash Vine Borer Activity Estimates: April 29, 2022

Squash vine borers can be a serious garden pest. If left unmanaged, their activity can cause a rapid decline in the health and productivity of zucchini, squash, pumpkins and other winter squash.

Small, slender, tan bug on a green leaf

Damsel Bugs: Beneficial Predators in Managed and Agricultural Landscapes

It is important to remember that not all insects are pests. Damsel bugs are beneficial predators that feed on soft-bodied insects, including many agricultural and garden pests.

A small black bug with tan margins on its wings resting on a grass seed head.

Black Grass Bugs May Cause Issues if Drought Persists

In western South Dakota, black grass bugs are a common spring forage pest that can cause considerable damage during periods of drought. Learn how to monitor and manage this pest to protect your forages this spring.

A yellow beetle with a black head, and square black markings on its back standing on a soybean leaf.

South Dakota Overwintering Bean Leaf Beetle Predicted Mortality: 2021-2022

Bean leaf beetle emergence is approaching, so it’s important to start thinking about this pest. Knowing the number of days that the air was cold enough for bean leaf beetle mortality allows us to estimate the emerging populations in the spring.

Caterpillar with brown and black stripes running down the length of its body. The caterpillar has a tan head and is feeding on green plant material.

Army Cutworms Are Active in South Dakota Wheat

Army cutworm caterpillar activity in winter wheat was detected a couple of weeks ago in South Dakota. Forecasted warmer temperatures will make conditions favorable for army cutworms to start feeding.

Three grain bins on the edge of a snow-covered field.

Forecasted Cold Temperatures Can Be Used To Cool Down Stored Grain

If temperatures are forecasted as being well below freezing, it would probably be a good time to start thinking about cooling stored grain. Cooling grain reduces the activity of stored grain insect pests and suppresses any mold growth that may otherwise occur.

Orange larvae on discolored soybean stem.

Soybean Gall Midge in South Dakota

Fact sheet about soybean gall midge in South Dakota