Common symptoms of boron deficiency in vegetables

Celery: at first brown spots appear along the periphery of the young leaves, and when it is more serious, it turns black and brown near the growing point and dies. The petiole of the outer leaf is old, the surface has brown stripes, and the epidermis fissures and becomes dark brown. Necrotic brown spots are also produced at the base and root of the petiole, and the whole tissue is hardened, which is characterized by aging and easy to break, and the whole plant atrophies in severe cases.

Cabbage: cabbage heart rot can occur in calcium and boron deficiency. At the beginning of the pilling, longitudinal or transverse lacerations occur on the inside of the petiole of the 5th-7th inner young leaves of the outer leaf, and the wound turns brown. More commonly, the middle ribs of the petiole become dark brown, and the leaves are severely atrophied, rough and hard.

Tomato: the growth point of the main stem turns yellow and then brown. The stem at the apex is old and easy to break, and sometimes the central part turns dark brown. The buds of the main stem, especially the lateral buds, are easy to occur and the elongation stops. In the period of fruit hypertrophy, deficiency does not appear on the leaves, there are cavities everywhere on the fruit, and the place becomes brown and woody.

Radish: in mild cases, aboveground fertility is mostly asymptomatic. After harvest, the fleshy part has dark brown or dark brown stripes along the central cambium. This is also known as red heart disease, although the red-hearted radish is not easy to soften. In severe cases, the heart leaf growth stopped, the aboveground growth was luxuriant, and when the root began to hypertrophy, the petiole was broken and was observed to be old. The leaves gradually yellowed and the heart leaves curled to the inside to become atrophic and dry. The white roots exposed to the ground become thick and cracked.