A: This phenomenon is mainly caused by the large amount of fruit left, the lack of nutrition, the lack of boron and calcium, and other trace elements and diseases. This requires timely fruit thinning, control of the amount of fruit, and sufficient nutrient . To ensure the supply of water and fertilizer, when the land of the vineyard is gravel, it needs long-term nutritional supplement. It is recommended to supplement it once in ten days. Add boron and calcium fertilizer, and spray the foliar fertilizer from the spring. The two diseases of water tank disease and white rot can also cause soft fruit and poor coloration, and need early prevention and treatment. Disclaimer: Some articles on this website are transferred from the Internet. If legal rights of third parties are involved, please inform this website. phone Fructo-Oligosaccharide Syrup 55% FOS Syrup,Fructooligosaccharides Prebiotics,Oligofructose,Nutrition Fructo-Oligosaccharide Qingdao Bailong Huichuang Bio-tech Co., Ltd. , https://www.qdblcycn.com