نقص البوتاسيوم

Potassium is one of the three primary macronutrients required in high amounts by all plants. Potassium is what the “K” stands for in “N. P. K.” fertilizers. K+ is the most abundant cation found in plants cells.

Potassium plays many important regulatory roles in plant development processes; it affects osmotic regulation and is involved in the opening and closing of stomata. Therefore, it affects photosynthesis and water regime in plants.

When potassium uptake is inadequate, the stomata responds slowly. This results in less water circulation in plants, making them more susceptible to drought and temperature changes.