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A grub that has an orange colored head and legs and a white body with a dark grey tip at the end. The grub is laying on top of the soil.

2019 June Beetle Update

In the spring of 2016, we received reports of large populations of June beetles in Central South Dakota, which indicates the start of a new cycle for the grubs. Based on these reports, it is estimated that 2019 will be the big emergence year if the 2016 adults were successful and their grubs survived.

A small black bug with tan margins on the wings. This insect is resting on a blade of grass that is green with white spots.

Be on the Lookout for Black Grass Bugs

It’s time to begin scouting pasture and wheat for the presence of black grass bugs. Last year, we saw the highest populations in areas of Central and Southwestern South Dakota. If left untreated, black grass bug populations tend to increase year after year.

A map of South Dakota with yellow and green circles indicating iverson risks at various locations throughout the state.

Use the SD Spray Tool for Inversion Detection and Weather for Pesticide Application

The SD Mesonet Spray Tool provides real-time weather data for pesticide applicators. This dedicated website for pesticide applicators uses the SD Mesonet weather data, which is updated every five minutes.

an image of a field of soybeans

Soybean Production: Cost-effective pest management practices

Chemicals were one of the most expensive individual costs in soybean production, behind only to seed in the non-land cost category. The average cash-rent soybean production farms incurred a crop chemical cost of $39/ac in 2015, an 88% increase from 2010.

grey to brown fly with large eyes and elongated mouthparts

What are Those Gigantic Flies?

As we progress later into the summer, we commonly see an increase in horse fly activity.

two black beetles rolling a ball of dung

Promoting Dung Beetles on the Range

In South Dakota, dung beetles help regulate rangeland health through dung dispersal.

an orange lady beetle with nine black spots

Lady Beetles of South Dakota

Lady beetles are one of the most familiar groups of beneficial insects. Farmers and gardeners appreciate them for devouring insect pests. Both adult lady beetles and caterpillar-like juveniles eat pests.

a downy woodpecker resting on a wooden pole

Woodpeckers Attacking Bur Oaks

Woodpeckers have been seen across the region chipping away at the bark of young bur oak. The woodpeckers can shred most of the bark from young trees, enough that the trees are killed by this injury.

An orange beetle with black spots and a white head sitting on a green leaf

Lady Beetles of South Dakota

A guide for monitoring, properly identify, and promoting the growth of lady beetles.

Two flies side-by-side. The left fly is a Western horse fly. The right fly is a deer fly.

Horse Flies and Deer Flies Becoming Abundant

The above-average precipitation this year has led to increased numbers of horse flies and deer flies across South Dakota. Widespread flooding and an overall abundance of available water has made conditions perfect for these flies.