SDSU Extension publishes the South Dakota Pest & Crop Newsletter to provide growers, producers, crop consultants, and others involved in crop production with timely news pertinent to management of pests, diseases, and weeds in South Dakota.
All Sunflower Content
January 24, 2020
The 2020 South Dakota Pest Management Guides are now available for free on the SDSU Extension website.
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.
January 03, 2020
SDSU Extension will host private pesticide applicator trainings throughout South Dakota beginning in early January through March.
SDSU Extension to Host Winter Agronomy Meetings and Private Pesticide Applicator Trainings in Southeast South Dakota
January 03, 2020
SDSU Extension will host winter agronomy meetings in Mitchell, Sioux Falls and Yankton in January 2020.
September 20, 2019
South Dakota will be one of 32 states taking part in a small grains survey conducted by the National Agricultural Statistics Service (NASS) of the United States Department of Agriculture this fall.
A guide of common stem diseases in sunflowers in South Dakota
Sunflower scouted this week in Brookings and Kingsbury counties were found with bacterial stem rot, Sclerotinia basal rot and sunflower rust. This area has had plenty of moisture, which favors several diseases to develop in sunflower.
While scouting sunflower, there are two types of seed weevils that you may encounter. They are the red sunflower seed weevil and the gray sunflower seed weevil. It is possible to observe both of these species on a single sunflower head.
In South Dakota, sunflower flowering is well underway. That means it is time to start scouting fields for red sunflower seed weevils. During the last two years, red sunflower seed weevil populations have been higher than normal with areas that exceeded the thresholds by as many as 300-500 adults per sunflower head.