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From left: Meadow deathcamas in a South Dakota prairie rangeland. Silvery Lupine in a rangeland in South Dakota.

Poisonous Plants on Rangelands: Deathcamas and Lupine

With prolonged drought conditions throughout many areas of South Dakota, there is an increase of invasive weeds and poisonous plants on rangelands. Identification of poisonous plants is crucial to ensure livestock production is not compromised.

Black angus bull at pasture with two cows in the background.

Reproductive Injuries in Bulls on Pasture

While reproductive injuries in bulls might not occur every year in a given cow-calf operation, they’re one of the most-common reasons bulls are examined by veterinarians during the breeding season.

Mosquito resting on a dandelion seed head.

West Nile Virus Update: Sept. 17, 2021

The South Dakota Department of Health's latest update indicated that West-Nile-virus-positive mosquitoes were detected in Beadle, Brookings, Brown, Codington, Hand, Hughes, Lincoln and Minnehaha counties in South Dakota.

Small group of cattle grazing near a sorghum field at sunset.

Prussic Acid Precautions

During periods of drought, it is important to aware of the factors that can be a concern during these conditions, specifically nitrates and prussic acid. It is important to take precautions when using feeds that could contain one or both compounds.

A wheat field that is bright yellow due to infection of Wheat streak mosaic virus.

Wheat Streak Mosaic of Wheat

Fact sheet about symptoms, disease cycle, risk factors and management of Wheat streak mosaic disease

Group of black angus calves in a pen under summer heat.

Vaccinating Early-Weaned Beef Calves

In most years, pre-weaning vaccinations are a task completed in early fall. However, in dry years, poor pasture conditions forcing producers to wean calves early may push up that timeline.

Three poisonous rangeland plants. From left: Hemlock, Halogeton and Buffalo Bur.

Poisonous Plants on Rangelands: Hemlock, Halogeton and Buffalo Bur

Several species of poisonous plants are invasive and can easily establish dense stands when there is a disturbance on rangelands. Hemlocks, halogeton and buffalo bur can all be found throughout South Dakota and are toxic to livestock.

Two black cattle being isolated in a pen.

Cull Cows and Trichomoniasis

With increasing amounts of cows being sold at the sale barn with reproductive years left, there are some precautions to be aware of prior to bringing females home to re-breed.

Mosquito resting on a dandelion seed head.

West Nile Virus Update: Aug. 2, 2021

As of Aug. 2, 2021, the South Dakota Department of Health indicated that West-Nile-virus-positive mosquitoes were detected in Brookings, Codington, Hughes, Lincoln and Brown counties in South Dakota.

Low larkspur and twogrooved poisonvetch plants growing in rangeland.

Poisonous Plants on Rangelands: Larkspur and Poisonvetch

Larkspurs are the second leading cause for all livestock deaths from toxic plant poisoning. Poisonvetches are considered accumulator plants that uptake excessive levels of selenium and cause toxicity problems in cattle.