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As soybean [Glycine max (L.) Merr.] yields reach record hights, more nutrients are required to maintain these production levels. This study was conducted to evaluate the effect of sulfur (S) and nitrogen (N) on soybean yield in diverse environments across the United States. Results indicated that soil and environmental factors are poor indicators of yield response to S and N additions. Yield responses to S and N additions were observed in yield environments averaging >3,643 kg ha-1, but S did not limit yield in most environments (n=49). Yield increases were only profitable at 2 site-years at the tested soybean grain prices. Overall results suggest that use of N and S fertilizers are rarely justified across diverse growing environments. 

• Agricultural Systems
  • Soybean
• Crop Management
  • Crop Fertilization
  • Crop Planning
  • Growth and Development