Oilseed

All Oilseed Content

aerial view of South Dakota farm and surrounding land

Crops

During the growing season, SDSU Extension provides weekly production recommendations.

Light colored moth on a yellow sunflower head.

Sunflower Moths Active in South Dakota Sunflowers

We have received reports of sunflower moths present on early planted sunflowers this week. The observed sunflower moth populations are above the recommend threshold of an average of 1 to 2 moths per five heads.

Small black and yellow beetle feeding on the green leaf of a canola plant.

Start Scouting Canola for Flea Beetle Activity

There are three species of flea beetles that commonly infest canola and feed on the leaves. The main concern occurs early in the season when these beetles can rapidly defoliate the plants.

A green combine harvesting canola in a field.

Broadleaf Considerations for West River South Dakota Cropping Systems

Selecting the right crop rotation is crucial in West River South Dakota, where water use efficiency is important. Learn some key factors to consider when selecting broadleaf crops for rotations and see what some farmers in the region are already planting.

South Dakota Pest Management Guides

The South Dakota Pest Management guides are now available for free. The guides offer recommendations for controlling weeds, insects, and diseases in a variety of South Dakota crops.

Bright-yellow sunflowers growing in a field.

Sunflower Hybrid Variety Trial Results

In 2024, sunflower trials were planted at two locations in South Dakota.

Tanks of anhydrous ammonia being pulled to a field for fertilizer application.

Starter Fertilizer Calculator and Final Report

Decision aid to assist crop planners in selecting the maximum safe fertilizer rate that can be applied with the seed for various crops.

Tractor with sprayer applying postemergence herbicide to soybeans.

Current State of Row Crop Weed Management in South Dakota

Results of an online survey to determine how South Dakota stakeholders are currently managing row crop weeds.

A green sunflower head with brown frass throughout.

Sunflower Moths Causing Problems

While scouting late-planted sunflowers two weeks ago, there were increased observations of sunflower moth caterpillars in the heads that were later than the rest of the field. Sunflower moths are best managed as moths or early instar larvae.

Sunflower Moths Observed in South Dakota

Sunflower moths have been observed in South Dakota sunflower fields this week. Sunflower heads are most susceptible to damage caused by the sunflower moth caterpillars from the onset of flowering to when the ray petals begin drying.