Natural Resources

All Natural Resources Content

Lone sheep grazing drought-stressed rangeland.

Drought Considerations for Grazing Range Flocks

Having a drought plan in place to best manage pastures is critical in being prepared for next year’s grazing season. Make decisions that will manage risk and promote both flock and financial longevity.

a variety of cover crops growing in a field

Herbicide Considerations for Cover Crop Planting in 2019

Long residual pre-emergent or early post-emergent herbicides may cause stand reduction or complete failure of cover crops. Depending on efficacy of the herbicide, each situation can both affect in-season and/or post-harvest cover crop establishment.

A thick patch of yellow, flowering leafy spurge plants growing in a pasture.

Spot Treatment Options for State Noxious Plants

When controlling grassland weeds, the mindset of row crop weed control may be put into practice too often. In most cases, broadcast control of weeds in grasslands is rarely necessary. Most often, spot treatment can be used more effectively to manage the noxious and invading weeds.

Two groups of cover crops. Left: Oats. Right: Radish.

Herbicide Interactions With Cover Crops After Oats

After oats have been harvested, options exist to keep a living root in the soil. This can be done through growing cover crops. In 2018 an on-farm trial was preformed near Salem, South Dakota to observe how cover crops grown after oats would germinate after common herbicides had been applied.

A man inspecting a field with salty soil.

Perennial Solutions for Alkali Areas

Reclaiming marginal lands, especially those considered saline or sodic can be very challenging and may take many years to accomplish. The key to turning around salt or alkali areas in your fields, begins with getting a living root established in the affected area.

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 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.

Color-coded map showing average grazing readiness date for Western Wheatgrass in South Dakota. For assistance reading this graphic and data set, please call SDSU Extension at 605-688-4792.

South Dakota Grazing Readiness Spring Turnout Map

The South Dakota Grazing Readiness Map uses historical climate data to provide livestock producers with a range of spring turnout dates for their location based on grass type.

Herd of black-beef cattle being moved in drought-stressed rangeland.

Trigger Dates: Critical Decisions for Drought Management

Having a drought plan in place ensures that you can overcome the inhibitions surrounding a drought response, the basis of which is figuring out trigger dates.

Group of black cattle near a stock dam that’s drying up under drought conditions.

Drought Planning

A drought plan will be an essential component to your overall grazing plan, as it provides guidance in making decisions during critical times when forage may be lacking.