1. Soft rot. This is a highly contagious disease, which will develop rapidly in high temperature and high humidity environment. The diseased fruit appeared brown spots at first, and then quickly expanded into light brown soft rot with dense white fluff on the surface. A few days later, black spots appeared on the fluff, which looked like black mold. Control measures include avoiding mechanical damage during harvesting and transportation, soaking fruits with benomyl, chitosan and ammonium chloride.
2. Peach moth. This insect lives on peach trees and will lay eggs in immature fruits, where it will hatch and grow into larvae. Because white spots may affect the quality and taste of peaches, they need to be removed before eating. However, other possibilities, such as fungal infection, cannot be completely ruled out. If this white spot is found in a large number of peaches, or other abnormal conditions occur, it is recommended to seek medical advice in time.
The above information is for reference only. If you have any questions about the specific causes of white spots on peaches, it is recommended to consult a professional doctor or plant pathologist for more accurate diagnosis and prevention suggestions.