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A thick patch of yellow, flowering leafy spurge plants growing in a pasture.

SDSU Extension Provides Leafy Spurge and Noxious Weed Management Recommendations

May 22, 2020

One of the many challenges producers face each year is weed control. Leafy spurge, in particular, can be difficult to manage.

Two dandelions side by side. The left has a bee foraging on it. The right has a hover fly foraging on it..

Why Those Dandelions in Your Yard Aren’t So Bad

While research has shown that pollinators, specifically honey bees, can’t survive on dandelion pollen alone, this doesn’t mean that the dandelions aren’t still important for pollinators.

a close up of buckthorn berries

Woody Weeds: Common Buckthorn

When considering weed control in tree plantings, the focus is generally placed on the control of herbaceous vegetation (grasses and forbs), particularly during the establishment phase. This focus is appropriate since control of herbaceous weeds is generally critical to establish a successful planting. As these plantings mature, providing perching sites for birds, another weed problem develops – the establishment of competing woody vegetation. These woody weeds are often left unchecked for many years because they look “natural” in a windbreak or other area of trees.

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

Alfalfa Weevil Activity Prediction Update: June 1, 2020

Activity of alfalfa weevils has been documented in many areas of South Dakota during the last week. At this time, the entire state has accumulated enough degree days for alfalfa weevils to be active.

Two photos of alfalfa weevils during different lifecycle stages. The left is the larva stage and has a longate, green larvae that looks like a caterpillar with white stripe running down the body and brown h

It’s Time to Scout for Alfalfa Weevils

The 2018 and 2019 alfalfa weevil populations were relatively low, and as a result, we didn’t receive very many calls regarding this pest during those years. However, 2020 has been quite a bit different, and alfalfa weevil populations seem to be much higher.

What's That Vine?

One of the most frequently asked questions that I have gotten recently refers to a vining plant that looks like it is going to take over the world, or at least a few trees in the yard or a section of a shelterbelt.

Small white maggot next to a brown pill shaped pupa. Both a on soil with a yellow tape measure behind them

Watch for Seedcorn Maggots in Emerging Soybean

Of all of the potential early season pests, the seedcorn maggot is rarely an issue in South Dakota. However, we have started receiving reports of soybean fields that have poor emergence or seedling stand reductions occurring.

A red sprayer in a green field with a cloudy sky in the background.

South Dakota Department of Agriculture Suspends All Sales and Application of Dicamba Product

June 08, 2020

On June 3, the United States Court of Appeals for the Ninth Circuit issued a decision to vacate the registration of three Dicamba products including Xtendimax, Engenia, and FeXapan for over the top use on soybeans.

A red sprayer in a green field with a cloudy sky in the background.

UPDATE: The Environmental Protection Agency Provides Further Guidance Regarding the Previous Suspension of All Sales and Application of Dicamba Products

June 10, 2020

On June 3, the United States Court of Appeals for the Ninth Circuit issued a decision to vacate the registration of three dicamba products including Xtendimax, Engenia, and FeXapan for over the top use on soybeans.

Large mass of small green insects and plant debris present on green implement.

Watch for Pea Aphid Populations in Alfalfa

Recent reports have indicated that pea aphid populations are very large in some alfalfa fields and should continue to be monitored and possibly managed.