Skip to main content

Philip Rozeboom

SDSU Extension IPM Coordinator

605-688-4377

Berg Agricultural Hall 228
Box 2100A
Brookings, SD 57007

Philip supports the citizens of South Dakota in his role as the SDSU Extension IPM Coordinator based at the South Dakota State University campus in Brookings.

State & Regional Offices

SDSU Campus

Also by Philip Rozeboom

Greenish brown bugs on a white sweep net cloth.

Alfalfa Plant Bugs Showing Up in Abundance

There have been several insect pests showing up in alfalfa this season, including the alfalfa plant bug. We consider the above-average spring temperatures and drought-stressed plants in Eastern South Dakota to be the primary drivers of these issues.

Gray beetle resting on the purple blossom of an alfalfa plant.

Blister Beetles Already Appearing in Alfalfa

Large blister beetles populations were observed while scouting alfalfa this past week. While they usually aren’t an issue until after the first cutting, this early activity means growers should monitor alfalfa fields prior to harvest for the remainder of the season.

Left: Alfalfa weevil larvae. Right: Alfalfa weevil adult.

Alfalfa Weevils Are Active in South Dakota

Alfalfa weevil larvae are active across South Dakota. Although they had a somewhat slower start this year, we are now observing all instars of the larvae in alfalfa fields.