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Young corn seedlings emerging from a spring field.

Watch Closely for Weed Emergence

Cool, dry conditions have slowed weed emergence and growth, but dry conditions also have limited the activation of preemergent chemicals. Given this scenario, fields need to be scouted closely to ensure that weeds do not get away.

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.

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.

Series of trophies on display at a 4-H contest.

South Dakota 4-H Missed Deadline Agreement

Form for missed deadlines for State 4-H Events

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.

Kochia plants growing in a test plot field.

Timely Control of Kochia

Warm temperatures across South Dakota could allow Kochia to get a head start this spring. Kochia control, like all weed control, takes proactive farm management to prevent weed establishment from occurring, rather than reacting to the latest problem.

Field with field peas and blue sky with fluffy white clouds

Weed Control: Pulse Crops

Weed competition can cause significant yield reduction in pulse crops. Pulse crops are weak competitors with weeds, therefore planning an effective weed control program is one of the keys to profitable production.