My plant is currently showing slight potassium deficiency. But somehow only on one half of the plant. The other half looks well-fed. Can someone explain this to me? Like, why doesn't the deficiency affect the entire plant?
The canopy yellowing your seeing is not from potassium. Potassium is burnt straight tips, and then spots on leaves. You have light stress. Likely only half the plant based on your light hot spot of intensity. Light is a little too intense is all.