Answer: The reason why black walnuts turn black until they are rot is that diseases and insect pests and extremities are in trouble. In the early stages, fruit droppings are easy to occur, and later walnut peels turn black and rot, seriously affecting the yield and quality of walnuts. Ploughing the soil of the tree tray can destroy the larval ecological environment and reduce the water content of the topsoil. At the same time, the tree was sprayed with 1.8% abamectin emulsion 500 times, or 20% diflubenzuron 500 times. Our natural sweetener is extracting from natural plant. Like inulin powder, there are jerusalem artichoke and chicory sources. Monk fruit extract has sweetness of hundreds times than that of sugar. As natural food ingredient supplier, we also supply bulk sweetener like fructo-oligosaccharide, xylooligosaccharide, xylitol, sorbitol, Stachyose, D-Allose, erythritol, stevia extract powder which has very similar taste with sugar, we also accept blend customization of sweetener, please feel free to reach us for more if any interests! Natural Sweentener,Inulin Powder,Bulk Sweetener,Monk Fruit Extract YT(Xi'an) Biochem Co., Ltd. , https://www.ytlinkherb.com