Potassium Deficiency

scouted May 23, 2023

Soybeans were scouted at the V3 growth stage and yellowing of lower (older) leaf margins were observed.
This issue was confirmed by an NC State Extension Specialist as a Potassium (K) Deficiency. Stunted plants or slow growth can be associated with a potassium deficiency. Soybeans require a high amount of potassium and uptake of K is driven by diffusion. 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.

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