Content by Adam Varenhorst

Plant Bugs Active in Alfalfa

Plant bugs are active in alfalfa fields across the state. A common question we receive from producers is why some of these bugs look so different from others.

Corn Rootworm Adults Are Active in South Dakota

We have been observing a lot of corn rootworm adults in South Dakota. The emergence of these primarily underground pests can provide insight into field population levels and the potential for future root injury.

Soybean Gall Midge Larvae Detected in South Dakota Soybean

Soybean gall midge larvae have been detected in southeastern South Dakota. Although the infestations probably won’t result in plant death in many fields in 2022, the infestations could be a source for soybean gall midge adults in 2023.

Squash Bugs Are Active in South Dakota

Squash bugs are an insect pest that everyone dreads finding in their garden. If left unmanaged, injury caused by their extensive feeding can kill infested squash and cucurbit plants.

Grasshopper Activity Is Ramping Up

We have already observed increased grasshopper activity in many areas of the state and, depending on the 2022 season, they may become problematic in crops.

Cowpea Aphid Populations Taking off in Alfalfa

In southeast South Dakota, we are observing large cowpea aphid populations in alfalfa. Large populations can reduce yields, and, if left unmanaged, these infestations even kill the plants.

Soybean Gall Midge Adults Detected in South Dakota

Soybean gall midge emergence was first detected in South Dakota two weeks ago, during the week of June 13 -17, 2022. Emergence continues to be slow, with the only observations in southeast South Dakota.