Content by Philip Rozeboom

Left: Kochia growing abundantly in an untreated soybean field. Right: Kochia weeds burned down in a soybean field managed with an herbicide mixture.

Glufosinate + lactofen is likely an effective mixture to manage kochia postemergence in soybean

Kochia is a difficult to manage weed that infests crops across South Dakota. Mixing effective herbicides is a tactic that can reduce selection pressure on resistant weeds and increase the effectiveness of weed management.

Gray beetle with long antennae.

Dectes Stem Borer in South Dakota Soybeans

Fact sheet on Dectes stem borer in South Dakota soybeans

Green plant with bright yellow flowers throughout.

Leafy Spurge: Do I spray now or wait until fall?

In June, leafy spurge is one of our most problematic rangeland, pasture, and roadside weeds. It is also one of South Dakota’s noxious weeds that landowners are required by law to control. So should you spray it now or wait until fall?

Green aphid with black cornicles and black patterns on legs.

Aphid Populations Continue To Increase in Wheat

English grain aphid populations are continuing to increase in wheat. With increasing pressure, it is important to scout wheat fields to ensure that the populations do not cause yield loss.

Grasshopper with red hind tibia. It’s sitting on a green grass stem.

Survey of Grasshoppers in South Dakota

Fact sheet on the abundance and species diversity of grasshoppers in South Dakota

Young sunflower plants emerged in a vast field.

Overlapping Residual Herbicides May Be Necessary for Effective Weed Management

Weed management in sunflowers poses unique challenges. Compared with many other crops, there is a limited number of herbicides selections, especially postemergence herbicides.

Examples of three commonly used protective gloves used for pesticide applications.

Pesticide Personal Protective Equipment: Glove Selection

Safety gloves are one of the most-important pieces of pesticide personal protective equipment. Glove material is very important, as not all materials provide the same protection for different pesticide ingredients.

Green aphid with red eyes and cornicles with black tips.

Monitor Alfalfa for Pea Aphid Activity

Pea aphids can cause yield reductions to alfalfa when large populations are present. Prolonged feeding by these populations can even cause the alfalfa fields to take on a “golden” color.

A small green corn plant that has been cut and is laying on the ground.

Scout Corn for Black Cutworm Activity

Black cutworms are a migratory moth that moves into South Dakota during early spring. Although black cutworm caterpillars cause minor corn injury by feeding on leaf tissue, serious injury occurs when feeding results in the cutting of young corn plants.

A black ink pen lain next to small, green and red waterhemp plants with a brown, dirt background.

Waterhemp Has Emerged in South Dakota: Time to prepare for post-emergence management

Waterhemp has started to emerge across South Dakota. While waterhemp plants are small now, recent rain events and forecasted warmer air temperatures are ideal for waterhemp growth.