Many vegetable farmers have encountered such a situation, their garlic appeared dead at the tip of the seedling stage, which is commonly known as the yellow tip. As long as the corresponding measures are taken in production, the occurrence of yellow tip phenomenon can be avoided. What are the causes and prevention methods of yellow tip in garlic seedling stage?
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Causes and control methods of yellow tip of garlic seedling:
The main reason for the yellow tip is: heavy planting; the mantle is the root; the "weaning" (also called "mother" or "bad mother") is yellow, which is a physiological phenomenon.
Control measures: First, the rotation. Garlic can't be re-planted, and the soil that has been planted with garlic in the head can't be replanted. Repeated planting will not only cause the garlic shoots to be yellow, but also cause other diseases, and the growth is not good, affecting the yield and quality.
The second is to prevent and control the mantle in time. General insecticides can be controlled. The third is to timely apply "weaning" fertilizer. "Weaning" withered yellow is a common physiological phenomenon in crops. It indicates that the crops or seeds of the crops that have been planted, that is, the "maternal" nutrients have been exhausted, and the plants have entered the vigorous growth period of absorbing nutrients from the soil, and the demand for fertilizer and water has increased. Therefore, it is necessary to topdress the water supply before “weaning†so that there is sufficient nutrient supply in the soil. "Weaning" fertilizer is generally applied 20 to 30 days after sowing. It is suitable for applying 1000 kg of decomposed human and animal water per acre and 15 to 20 kg of urea. Using 0.1% potassium dihydrogen phosphate solution as a foliar fertilizer, this can reduce or avoid the occurrence of yellow tips of garlic, and can promote the differentiation of flower buds and garlic stalks.
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