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Soybean Aphids in South Dakota

Factsheet on Soybean Aphids in South Dakota

soybean pods

Investigation of Soybean Seed Treatment and Inoculant in Southeastern SD, 2018

Soybean seed treatment products are widely utilized by many farmers in southeastern South Dakota and the surrounding area. These products often consist of an insecticide/fungicide combination, and/or inoculant that is mixed and placed on the seed as a pre-treatment before the grower plants the crop.

man holding a small pile of soil in his hands

Recommended Soil Sampling Methods and Instructions

Proper collection of soil samples is extremely important as the accuracy of the soil test depends on the quality of the soil sample provided to the lab.

Three common aphids. From left: Green peach aphid colony. Potato aphid colony. Foxglove aphid on the underside of a pepper leaf.

Are Your Pepper Plants Covered With Aphids?

During this time of the growing season, it is common to observe aphids on garden plants, including peppers. However, when dense aphid populations are present, they can reduce pepper yields and cause rapid plant health decline.

Orange beetle with black markings on an orange flower

Orange Beetles Are Killing My Flowers, or Are They?

Many gardens are being invaded by orange beetles that have a strong preference for flowering plants. Rest assured, these are soldier beetles and they aren’t feeding on the flowers! Instead, they are actually predators and pollinators.

Black, yellow, and brown wasp in a clear container

Huge Wasps on My Tree! No, Those Still Aren’t Murder Hornets.

Another insect that has been mistaken for the Asian giant hornet (also known by its media-popularized name of ‘murder hornet’) is the horntail wasp. Horntail wasps are wood-boring insects that are harmless to humans, as they do not have venom and cannot sting.

South Dakota soybean late plant date map. View pdf map: https://legacy.rma.usda.gov/fields/mt_rso/2018/final/sdsoybeans.pdf  View text in Excel: https://legacy.rma.usda.gov/fields/mt_rso/2018/final/sdsoybeanstext.xlsx

Multi-Peril Crop Insurance: Delayed and Prevent Plant Choices

Crop insurance late plant dates are fast approaching for planting crops in South Dakota. The weather and soil conditions this spring will likely lead to some prevent plant situations for farm producers.

Black caterpillars with white stripes feeding on green Canada thistle.

Thistle Caterpillars Showing Up on Canada Thistle

This week we received reports of caterpillars feeding on Canada thistle. After taking a look at the caterpillars, we determined that they are thistle caterpillars. However, we typically don’t see thistle caterpillar activity in S.D. until July or August. So why are they showing up so early this year?

Small, green soybean aphids on a green, soybean stem with pink flower.

Small Populations of Soybean Aphids Observed in South Dakota

While scouting fields last week, we observed small populations of soybean aphids near Volga, South Dakota. Although no sustained populations were observed, it is a good reminder that soybean aphid scouting should occur throughout the growing season to prevent population outbreaks.

A soybean field in early fall. Plants are nearing maturity.

Low Temperatures During Soybean Maturity

This year, we had a slow soybean planting due to high rainfall in spring. This was followed by below normal temperatures for most of the growing season, which delayed soybean growth and development. This brings up a question about what these low temperatures will do to soybeans that are in the field.