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Sorghum Weed Control
Early competition, especially from grass, is critical for successfully controlling weeds in sorghum. There are preemergence as well as postemergence herbicides available for this crop. Early treatment provides the best control of broadleaved weeds with crop stage also being a critical factor for some postemergence treatments.
Recommended Soil Sampling Methods and Instructions
Proper collection of soil samples is extremely important as the accuracy of the soil test depends on the quality of the soil sample provided to the lab.
Herbicide Rotation Restrictions
This is a quick reference guide to common herbicides and their rotation restrictions for selected crops.
2019 Survey South Dakota Corn Nutrient Management Practices
Data from the 2019 survey South Dakota farmers was used to examine how local and operational characteristics such as geographic location within SD, tillage practice, and farm size were related to the adoption of various nutrient management practices.
Fertilizer Recommendation Guide
SDSU Extension fertilizer recommendations are based on field research in South Dakota and neighboring states.
Oat Variety Trial Results
In 2023, oat variety trials were planted at 7 locations and a regional summary in South Dakota.
Comparing Yield Goal and Maximum Return to Nitrogen Prediction Methods for Determining Corn Economic Optimal Nitrogen Rates
Fact sheet evaluating the accuracy of different corn nitrogen recommendation approaches with their advantages and disadvantages.
Interpretation of Water Analysis for Livestock Suitability
Fact sheet to help decipher both the results of a “quick test” and laboratory analysis for livestock suitability.
Spring Wheat Variety Trial Results
The 2023 spring wheat reports include data from 10 locations with regional summaries.