After the apples were cut into flowers and bags, the young fruit had just peeled off the hairs, the lenticels had not yet healed, and the exposed young fruit was extremely sensitive to external factors. Improper drug selection, improper compounding, improper spraying, will stimulate the young pericarp hole to form small black spots, cracks, chicken paw patterns, fruit rust, fruit spots, fruit spots burst and other hidden damage. To prevent these phytotoxicity, the following points should be noted when spraying the product before bagging: 1. Should not use coarse particles, poor suspension of the agent before bagging. Such as sulphur formulations and sulphur containing compound: chlorothalonil and beta-aluminium. Some domestic mancozebs and compound products. There is a strong stimulatory effect on young fruit, which can easily cause hidden drug harm. 2. It is not suitable to use compound germicide. Promote the use of single-agent germicide (single component). The complex fungicides produced by many manufacturers contain auxiliaries of unknown ingredients. It is advisable to purchase a single dose and mix it yourself when spraying. 3. It is not suitable to spray poor quality EC formulations. Promote the use of powders, water or water disperse pesticides, acaricides and fungicides. 4. Copper preparations should not be used. When using copper preparations such as Bordeaux mixture, in the event of rain or wet weather, phytotoxicity will cause fruit rust, fruit spot enlargement, and fruit spot bursts. 5. Can not use penetrants and synergists to prevent stimulation of young fruit surface. 6. When spraying, the droplets should be fine, the nozzle should not be too close to the fruit surface, and the residence time should be short. It is not appropriate to spurt the young fruit surface directly with the nozzle. Disclaimer: Some articles in this website have been transferred from the Internet. If you are involved in third party legal rights, please inform this website. phone Anesthesia Medical Co., Ltd. , https://www.jssinoanesthesias.com
Apple should not be used before bagging