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A close up view of the stem of palmer amaranth which is hairless.

Identification and Management of Palmer Amaranth in South Dakota

Guide for the identification and management of Palmer Amaranth in South Dakota

A herd of cattle gather around a stock pond on a vast, lush grassland. Courtesy: USDA [CC BY 2.0]

Weed Control: Pasture and Range

There are 24 million acres of native and tame pasture and range as well as 1.4 million acres of grass hayland in South Dakota.

A drop of dew on a green leaf.

How to Choose the Right Adjuvant for the Job

With the rise of herbicide-resistant weeds, the use of an adjuvants is also on the rise and may be necessary to help control resistant weeds.

grass with field bindweed, a viny green weed with white flowers

Weed Control: Noxious Weeds

Noxious Weed Recommendations: Herbicides for pasture, range, and non-crop areas, including roadside and other right-of-way that may be harvested for hay or grazed, are given a priority.

An unplanted field with weeds growing throughout.

Managing Weed Seed in 2020

Producers need to plan in advance on how to deal with bare fields that contain an overabundance of weeds. Weeds in these fields have deposited significant amount of seeds on the soil surface, which can easily germinate when adequate moisture and temperature are available.

Two side-by-side fields. The left field is planted with perennial grass. The right field is bare with salty soil exposed.

Managing Weeds While Transforming Marginal Land Into Perennial Forages Production

There are currently millions acres across South Dakota impacted by saline and sodic conditions. Research has shown that salt-tolerant perennial grasses are a possible way to bring land back into production.

A color-coded precipitation probability map of the United States. The majority of South Dakota is predicted to have wetter than average precipitation, with the highest likelihood being in the southwest corner of the state. For a complete description, call SDSU Extension at 605-688-6729.

May 2020 Climate Outlook

On April 16, NOAA’s Climate Prediction Center released their climate outlook for May and the coming three-month period of May through July. There is a lot of uncertainty in the temperature outlook for the next one-to-three months in the Northern Plains Region.

A collection of empty pesticide and herbicide containers.

Changes in Pesticide Applicator Certification During COVID-19

April 27, 2020

Due to office closures as a result of COVID-19, commercial pesticide applicator testing is currently unavailable at the SDSU Extension Regional Centers and county offices.

A patch of soil with kochia weeds growing throughout.

Temperature and Herbicide Performance

In South Dakota, the spring can come with a wide range of temperature fluctuations. This will affect the performance of burndown herbicides. Depending upon the target weed, type of herbicide and application rate, there will likely be decreased weed control in cooler temperatures.

A red sprayer in a green field with a cloudy sky in the background.

How to Stop Drift

The goals of applying any crop protection products include: increasing effectiveness, mitigating drift, and maximizing profits. We will focus on mitigating drift, even though all three interact with each other.