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Seecorn maggot larva feeding on a seed in a field.

Seedcorn Maggot Degree Day Activity Estimates: May 20, 2021

Seedcorn maggots can be an early-season pest of corn and soybean in South Dakota, typically affecting crops that are emerging or have recently emerged. Seedcorn maggots can cause direct loss by destroying planted seeds.

Three grassland insects. From left: white grub, dung beetles and Dakota Skipper Butterfly.

Rangeland Insects Are Critical Indicators of System Health

Insects, in general, may offer more indication of rangeland health than any other type of organism. They serve as key building blocks that other organisms depend on.

Yellow wireworm on an orange sweet potato.

Wireworms in the Garden

With warming soil temperatures, overwintering wireworms have become active throughout South Dakota. Wireworms are soil-dwelling insects that can be pests of germinating seeds, seedlings and root crops.

Two rows of corn at V5 leaf growth stage looking down from above. Between the corn rows there are 3 separate cotton strips placed on the soil surface just before burial in a 2-inch-deep trench. The cotton strips are numbered for their identification after recovery at three different dates.

Cotton Strip Soil Test: Rapid Assessment of Soil Microbial Activity and Diversity in the Field

Soil has always been considered as a living system due to its biological components: fungi, bacteria and plant roots. Under several ongoing research projects, we started researching how we can use ‘cotton strip assay’ to compare different cover crop mixes to optimize field soil activity and build up better soil health.

Earthworms on the soil surface inside a white hard-plastic ring, after mustard-vinegar solution was drained down through the soil profile forcing earthworms out onto the surface in order to be counted.

How’s Life in the Soil? Ask (Count) the Earthworms.

Earthworms are ‘very special’ creatures on earth, and their contribution in soil nutrient cycling and fertility management has been acknowledged from the beginning of agriculture. So, the question needs to be asked, how can we help improve earthworm populations?

Cattle feeding on supplemental forage distributed on winter range.

Winter Cow Supplementation and Cold Stress

Extreme winter weather makes it challenging to meet a cow’s nutrient requirements. With below-normal temperatures come challenges of ensuring adequate nutrition and protection for livestock, including being prepared to provide additional feed and shelter.

Three cattle feeding on supplemental forage near cornstalks.

Supplementing Cows on Crop Residue

During winter, it is a common practice to have cows graze crop residue. This helps reduce the amount of forage needed to maintain a cow for part of the year, while reducing annual feed costs. However, cows may eventually need supplementation when grazing crop residues.

Hereford calf nursing from mother cow.

Updated Guidelines for Monitoring Colostrum Consumption and Antibody Transfer in Calves

Dairy and beef producers have long understood the importance of colostrum for the short- and long-term health of their calves. Calf health experts have determined the minimum level of serum protein to categorize a calf as having received sufficient colostrum.

Group of mixed calves in a feedlot.

SDSU Extension Opens Registration for 2020-2021 Calf Value Discovery Program

October 14, 2020

SDSU Extension Opens Registration for 2020-2021 Calf Value Discovery Program

Black beetles with orange or yellow spots feeding on a ripe tomato.

How Do I Keep Insects From Destroying My Garden Produce?

It is not unusual to see insects in a garden during the fall, but it can be frustrating to watch nearly ripe produce be destroyed by insects before it can be picked.