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Seecorn maggot larva feeding on a seed in a field.

Seedcorn Maggot Degree Day Activity Estimates: June 3, 2021

We are currently between the second and third generation peak emergences in South Dakota. Seedcorn maggot management must be done before planting, or the populations can be avoided by not planting during times of peak emergence.

Yellow and black beetle on green soybean leaf.

Overwintering Population of Bean Leaf Beetles Are Active In Soybean

While scouting soybeans this week, extensive defoliation caused by bean leaf beetles was observed. Although insecticide seed treatments will reduce the threat of bean leaf beetle feeding during this time of the season, soybean fields should still be scouted.

Brown caterpillar with 3 pale stripes running the length of its body. The head is tan.

Bronzed Cutworms Are Active

Bronzed cutworms can damage turf by clipping blades of grass close to the soil surface. Feeding by bronzed cutworms in lawns will result in small, brown circular patches, and large populations can result in extensive lawn injury.

Brown insect with two pincher like appendages at the end of its body.

Earwigs Are Active

Although earwigs typically prefer wet conditions, quite a few have been observed so far this year. It’s important to remember that watering lawns or potted plants around the house provides ideal earwig habitat.

A group of people standing in a wheat test plot

SDSU Extension to Host Small Grain Variety Tours

June 08, 2021

On June 17, South Dakota State University Extension will kick off its annual statewide Small Grain Variety Tours in Ideal.

A wheat head showing the start of the flowering period. This growth stage is the best time to apply a fungicide to manage Fusarium head blight.

Use Fusarium Head Blight Risk Prediction Tools for Better Disease Management

Winter wheat has reached the flowering growth stage, which is a time of high risk for Fusarium head blight. By using disease prediction tools correctly, a producer can protect wheat from infection by applying a timely fungicide when the tools show moderate to high risk.

Green caterpillar with prolegs at the end of its body that form “V” shape.

Diamondback Moth Caterpillars Active In South Dakota

Diamondback moth caterpillars have been observed in South Dakota gardens. These pests feed primarily on cole crops, such as broccoli, Brussel sprouts, cabbage, cauliflower and kale, leaving behind irregular-shaped holes.

Two mosquitoes, the one on the left being darker in color and the one on the right having a white band on its extended mouthpart. The white band is indicated with a red circle drawn over the picture.

Will Mosquitos Be an Issue During This Summer?

Although it may seem like mosquitos won’t be an issue this year due to drought conditions, it is important to remember that they don’t require large bodies of water to reproduce. Mosquitos can utilize standing bodies of water, small puddles or even stagnant water in containers or old tires.

Large patch of grab grass growing on lawn.

Is Crabgrass Taking Over Your Lawn?

Each year homeowners and businesses typically find crabgrass invading their lawns. If you desire a nice lawn, you may not be happy about this. Crabgrass can be a bit tricky to control—especially after it has established itself for the season.

Faded cosmo flower being deadheaded with a pair of graden shears.

Enjoy More Flowers in Your Garden by Deadheading Regularly

Deadheading is a simple activity that removes the faded or spent blooms from plants to encourage more flowers. While almost all annuals benefit from deadheading, there are also a few perennials that will bloom for a second or even third time if deadheaded.