Content by Jason Clark
SDSU Extension invites corn farmers to join on-farm nitrogen fertilizer trial program
February 06, 2026
South Dakota State University Extension and Premier Crop Systems are recruiting corn farmers to participate in nitrogen fertilizer trials.
Oat Nitrogen Fertilizer Rate Guidelines: Do we use the yield goal or maximum return to nitrogen approach?
Nitrogen is an essential plant nutrient commonly applied to oat crops. It is important to apply an appropriate rate of nitrogen fertilizer to oats, as too little can reduce economic return, while too much can lead to potential negative environmental effects.
South Dakota On-Farm Nitrogen Rate Trial Program
The on-farm corn nitrogen fertilizer rate trial program will help farmers, crop advisors and ag service providers to design, implement, and analyze nitrogen rate trials.
Updating Oat Nitrogen Fertilizer Rate Recommendations in South Dakota
Research trial results for nitrogen fertilizer rate recommendation for oats in South Dakota.
Crop Hour
SDSU Extension Crop Hour webinars provide valuable information for South Dakota crop producers to help them improve their profitability and prepare for the upcoming season.
80 South Dakota farmers needed for nationwide soil health project: Enroll today
April 03, 2025
South Dakota State University Extension is inviting South Dakota farmers to participate in a new soil health survey.
Fertilizer Placed With the Seeds in Dry Soil Conditions
Climate patterns can shift from wet to dry very quickly. A current consideration is thinking about seed injury from furrow-placed fertilizers, and there are notable differences among crops for tolerance of seed-placed fertilizers.
Starter Fertilizer Calculator and Final Report
Decision aid to assist crop planners in selecting the maximum safe fertilizer rate that can be applied with the seed for various crops.
New digital Fertilizer Recommendation Support Tool launches nationwide
April 11, 2024
South Dakota State University Extension and project partners are proud to announce the nationwide release of the Fertilizer Recommendation Support Tool (FRST), a decision aid that provides an unbiased, science-based interpretation of soil phosphorus and potassium values for crop fertilization.
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.