Potassium Deficiency
scouted Aug. 14, 2023
- Background
- Soybeans were scouted at the early R5 growth stage and yellowing of leaf margins were observed in areas across the field.
- Conclusion
- This issue was confirmed by an NC State Extension Specialist as a Potassium (K) Deficiency. Stunted plants, slow growth, and marginal chlorosis can be associated with a potassium deficiency. Soybeans require a high amount of potassium, and the uptake of this nutrient is driven by diffusion. So, in an environment of droughty conditions a K deficiency may be seen. The best way to ensure and maintain the correct nutritional needs for a field is to conduct soil sampling every 1 to 2 years.
