1. Scab: In June, peaches were successively attacked by germs. Infected fruits in May began to develop in late June. The disease is characterized by the formation of star-shaped lesions on the fruit surface. The lesions are only present on the epidermis and do not penetrate deep into the flesh. In severe cases, the surface becomes dark and cracking, which affects the appearance quality of the fruit. In previous years, Taoyuan, where the disease occurred, should still be sprayed in June to prevent infection.
2. Anthraquinones: June is an important period for the damage of Hawthorn leafhoppers and Tetranychus urticae. Close attention must be paid to the prevention and control.
3. Mulberry: The nymphs hatched in mid-May develop into adults. In mid-June, the adult males begin to emerge and die after cohabitation with female adults; the adult fertilized gradually expands.
(4) Pyrosphaeridae: In June, the larvae of pear borer borer bored the peach shoots, resulting in the main period of wilted peaches. In the middle and early stages of adulthood, the second-generation larvae that hatch from the eggs after laying are still seriously harmful to the peach shoots.
5. Myzus persicae: Myzus persicae is a major pest that damages peach fruit. In early June, a new generation of larvae hatches, breaks into the peach fruit, enters the fruit heart, and eats the tender peach kernels and flesh. There are wormholes in the victim fruit, which often produce fluid and excrete granular insect waste.
6. Peach Leaf Miner: In early June, the second generation of adult moths began to appear, and the middle period was the peak period. The larvae drilled on the peach leaves to form a linear insect path, and severe defoliation began in late June.
Second, prevention and treatment of pests and diseases
1. In the Taoyuan area where black spot occurred in the past years, bactericide should be sprayed 2-3 times in June. Such as Baoerfeng 1500-2000 times, bacteria stopped 3000-4000 times, good intentions 800 times liquid, 12.5% ​​myclobutanil 3000 times and so on.
2. Taoyuan, which has occurred in the pink peach aphid, should be treated with caution in mid-June. Dang Shiang or King 2000x is better.
3. In early June, it was a critical period for the damage of Myzus persicae. The use of H84000, 1000, and 200 times H2O have good results.
4. After mid-June, a large number of adults of Peach leafminer moths should be sprayed once. They should be sprayed once for Avi-2000, or for 8000-10000 times.
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