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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?

Hand holding herbicide sprayer over vegetable garden.

Organic Herbicides: Garden and Flower Bed Weed Control

Many South Dakota homeowners do not want to use inorganic or synthetic herbicides due to potential health impacts. Organic herbicides can be a useful tool for weed control when combined with other management practices.

A farmer watching the sun rise in a bare, unplanted field.

Crop Tolerance to Soil Herbicide Residual

Some herbicides can persist in soil, especially dry soil. Herbicide carryover could be an issue in 2021 across the state depending upon last year’s moisture levels and field conditions.

Young tomato plants surrounded by organic mulch in a no-till garden.

Weed Control in No-Till Gardens

Mulch is the key to successful weed control in no-till gardening. It is best to start a no-till garden in the fall to give applied mulch the time to breakdown and suppress any weed growth.

Tractor spraying pre-emergent herbicide in a bare field.

How Well Will Pre-Emergence Herbicides Work in 2021?

It is always good to start with a pre-emergence program to prevent weeds from becoming resistant. With the spring starting out below normal in subsoil, there are questions as to how well preemergent herbicides will work.

Field pea cover crop blend growing in a field of corn residue.

Herbicide Residual Effects on Cover Crops After Corn Silage

As cover crop usage has increased in recent years, managing weeds through a longer residual herbicide program has become more complicated. Learn some considerations for cover crops following corn silage.

Cover crops growing in a field of wheat stuble.

Herbicide Residual Effects on Cover Crops After Wheat

Increased use of cover crops following major crops brings up questions of herbicide effects on cover crop establishment and rotation restrictions. Learn some considerations for cover crops following wheat.

Several ears of sweet corn on a table.

Weed Control in Sweet Corn

When growing sweet corn on a large scale, weed control can be challenging, and certain steps need to be taken before choosing an herbicide.

Revegetation of Salt-Impacted Soils in South Dakota

This publication provides suggested native species suitable for the revegetation of salt-impacted soils. The suggested species are listed as native to South Dakota according to the USDA NRCS Plants Database.