Symptoms: When the plant lacks boron, the growth is slow, the growth points of the main stem and lateral buds are necrotic, the lateral buds grow rapidly, the internodes are shortened, the whole plant is in a short plexiform, the brown spots appear at the base of the main stem, the branches are numerous, and the plants are clustered. The leaves thickened and rolled up, affecting the operation of photosynthetic products, a large amount of starch accumulated in the leaves, similar to leaf virus disease; root tip atrophy, roots short and thick, brown, root tip easy to die, roots increased, roots can not With deep development, drought resistance has declined. The tuber is small, the peel of the tuber near the stem end becomes brown or cracks, or the local vascular bundle becomes brown. Etiology: Boron deficiency occurs when soil acidification, boron leaching, or excessive lime application. Control methods: Prevent boron deficiency from 0.25 to 0.75 kg of borax per acre at the seedling stage to initial flowering stage, and spray 0.1% borax at the initial flowering stage. Barren sandy soils are prone to boron deficiency. When the available boron content in the soil is ≤ 0.5 mg/kg, boric acid 7.5 kg/ha can be applied to the base fertilizer. Dildo Vibrators,Sucker Sucking Dildo Vibrator,Sucker G Spot Nipple Sucking Dildo,Dildo Sucking Vibrator Shenzhen Dongchen Hey E-commerce Co.,Ltd. , https://www.xxsexytoy.com