In the summer, eggplants are often cultivated with the cracking of the top (umbilicus), the exposure of seeds, and the inability of fruit to enlarge. Occurrence of severe land masses as much as 1/4 severely affects production and commodity value. The cracking of the top of the cannabis is mainly caused by calcium deficiency. The main cause of calcium deficiency is due to the lack of calcium in the soil, heavy rain leaching, excessive nitrogen fertilizer, excessive air humidity, and serious diseases. In the early stage of fruit development, the soil was arid, resulting in lignification of the fruit skin. In the later period, heavy rain or watering was uneven, and the fruit inside rapidly expanded, and the peel did not grow and cracked accordingly. However, the main cause of cracking of the top of most eggplants is the lack of calcium in the plants. The causes of calcium deficiency and prevention measures are as follows: First, the cause of calcium deficiency 1. The lack of calcium. The lack of calcium in the soil, especially in continuous plots, does not pay attention to the application of calcium fertilizer, causing calcium deficiency. This phenomenon is more prominent in greenhouses and greenhouses. 2. Too much nitrogen. Too much nitrogen fertilizer in the soil causes excessive accumulation of ammonium nitrogen and inhibits the absorption of calcium. 3. Excess water. Too much water or heavy rain leaching, the loss of effective calcium in the soil erosion, resulting in the lack of calcium. It is serious when it is rainy in summer. 4. Growth disorders. That is, the poor circulation of water in the plants leads to obstacles in growth. This phenomenon is divided into two cases: First, the soil is dry, the plants lack of water supply, calcium can not be absorbed and supplied; Second, after heavy rain or watering in summer, the air humidity is very high, inhibiting the transpiration of the plant, the root can not Normal absorption of water and calcium, resulting in the lack of calcium. 5. Pest and harm. In the late growth stage, due to management negligence, serious pests and diseases, especially the occurrence of Verticillium wilt, blight, root rot, root knot nematode disease, diseased plants, and excessive results, plant aging and other reasons, the root absorption function is greatly reduced, Causes a lack of calcium. Second, crack prevention measures 1. Increase calcium fertilizer. Pay attention to the calcium fertilizer with higher calcium content in fertilization. 2. Properly water. Water in time when drought, but not too much. The rain will be drained in time to prevent flooding. 3. Strengthen management. In addition to pest and disease control, spraying natural brassin and Shuofeng 481 solution twice every 20 days to promote root growth and increase absorption capacity. 4. Root fertilization. When the humidity of the air is high in the rainy season, top dressing is performed once every 3 to 7 days with 0.3% ammonium calcium magnesium solution. Dog Dental Chews,Dental Sticks For Dogs,Dental Treats For Dogs,Minties Dog Treats Jiangxi Welton Pet Products Co., Ltd. , https://www.weltonpetcare.com