Diseases & Disorders
All Diseases & Disorders Content
Tree Pest Alert
From seasonal issues and timely recommendations to disease diagnosis and expert advice, the Tree Pest Alert is a trusted resource for selecting, planting and caring for trees and shrubs all year round.
South Dakota Pest Management Guides
The South Dakota Pest Management guides are now available for free. The guides offer recommendations for controlling weeds, insects, and diseases in a variety of South Dakota crops.
Bacterial Leaf Streak Initiative Conference
The fifth annual Bacterial Leaf Streak Initiative Conference will be held from March 30-31 at SDSU Alumni Center - Woster Celebration Hall (815 Medary Ave., Brookings, SD 57006).
Pine Needles: Another Possible Threat to Beef Cow Pregnancies
For at least the past 50 years, consumption of Ponderosa Pine tree needles (and those from a few other pine tree species) by pregnant cattle has been recognized as a cause of abortions during the last trimester (three months) of gestation.
Crop Hour
SDSU Extension will deliver a series of virtual Crop Hour webinars January 7 to February 27, 2025, every Tuesday, Wednesday and Thursday from 10:00 a.m.-11:00 a.m. CST.
Southeast Research Farm Seminars @ Dakota Farm Show
Join SDSU Extension for a series of educational presentations during the Dakota Farm Show from January 6-7, 2026, at the USD DakotaDome (1101 N Dakota St, Vermillion, SD 57069).
Better Choices Better Health Lay Leader Training
SDSU Extension will host a Better Choices, Better Health-SD Lay Leader training on March 24, 25, 31 and April 1 from 9:00 a.m. - 4:00 p.m. each day at the SDSU Extension Mitchell Regional Center (1800 E. Spruce St., Mitchell, SD 57301).
Chronic Disease
Chronic diseases and their consequences can often be prevented or managed effectively through medical management, behavioral change efforts, and sustained patient support.
Black Rot of Brassica Crops
Black rot is an uncommon, but devastating bacterial disease in South Dakota that can develop during extended periods of hot and wet weather, leading to rapid and widespread crop loss.
West Nile Virus Update: October 16, 2025
As of October 16, 2025, the South Dakota Department of Health reported 86 human cases of West Nile virus from Aurora, Beadle, Bon Homme, Brookings, Brown, Charles Mix, Clay, Codington, Corson, Douglas, Grant, Gregory, Haakon, Hamlin, Hand, Hughes, Hutchison, Hyde, Lawrence, Lincoln, Marshall, Meade, Miner, Minnehaha, Pennington, Roberts, Sanborn, Spink, Stanley, Todd, Union, Walworth, and Yankton counties.