What effects does potassium deficiency have on the growth of rapeseed?

(Agricultural Wealth Network) When rapeseed is deficient in potassium, it causes metabolic disorders, and photosynthesis and respiration become abnormal. Potassium is highly mobile within the plant, so potassium deficiency first appears in the lowest leaves. In seedlings deficient in potassium, when they have 3 to 4 true leaves, some leaves and petioles take on a purple color. Scorched edges and light brown necrotic spots can be seen along the leaf margins, and the mesophyll tissue takes on a clearly scalded appearance. When a plant is clearly deficient in potassium, the leaf cells lose turgor and wilt. The stem shows brown streaks, and when the lesions merge into a single mass, the stem withers and breaks, causing abnormal budding and flowering. In severe potassium deficiency, leaf emergence is slow, each growth stage is delayed, the root system is weak, and both seed yield and oil content are clearly reduced.