Search
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.
SDSU Extension to Offer Integrated Pest Management Field School Online
July 30, 2021
South Dakota State University Extension will kick off its 13th annual Integrated Pest Management (IPM) Field School Aug. 1.
SDSU Extension to Tackle Weed, Pest and Drought Inquiries at State Fair
August 23, 2021
To address drought concerns, as well as weed and pest inquiries, South Dakota State University Extension will feature two booth locations at the 2021 South Dakota State Fair Sept. 2-6 in Huron.
‘Baa-d Cedars’ Field Day Examines Goat-Targeted Grazing on Cedars
September 17, 2021
South Dakota State University Extension invites the public to an interactive Eastern Red Cedar Management Field Day to see the impact goats can have in controlling the most widely distributed conifer across eastern North America.
Noxious Weeds of South Dakota
Pictorial reference guide of noxious weeds in South Dakota
Apply now to attend SDSU Extension Master Gardener and Home Horticulture Course
February 24, 2023
Applications are now being accepted for the South Dakota State University Extension Master Gardener and Home Horticulture course offered March 23 to June 13.
Organic Herbicides
Many gardeners across the state of South Dakota desire to have weed-free gardens, yards and flowerbeds. Many homeowners do not want to use inorganic herbicides due to their potential health effects.
Lawn Weed Control
Cultural weed control practices must be included in weed management programs to optimize control and inhibit re-infestation. A healthy, dense turf cover is the best overall defense against weed invasion. Some common cultural weed control practices include planting the most adapted turfgrass species for your environment (i.e. shade, full sun, or hot, dry conditions), maintaining a mowing height of 2.5–3.5 inches, watering deeply but less frequently, and proper soil maintenance including fertilization and core aerification.
Grassy Weeds
Grassy weeds are a problem in all field crops. They must be identified at early stages of growth so they can be controlled before crop yields are seriously threatened. Control measures are not the same for all grassy weeds, so accurate seedling identification is important.
2017 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.