Principle of pesticide spraying during the rainy season

April 09 18:06:50, 2023

1. It is mainly based on systemic fungicides and supplemented by protective agents. Systemic fungicides such as carbendazim, diazolol, methyl thiophanate, etc., protective agents such as Dasheng, mancozeb and the like. A systemic fungicide can be used to remove pathogens that are latent in young fruits and leaves. Moreover, in the rainy season, it can be quickly absorbed by fruit trees to prevent the rain from scouring and reducing the efficacy.

2. Multiple fungicides are used alternately. This can prevent the bacteria from developing resistance and ensure the quality of the spray.

3. Use Bordeaux mixture. Bordeaux liquid not only does not produce drug resistance, but also because it has strong adhesion to lime and is resistant to rain, it is very suitable for spraying in flood season. When spraying, it should be chosen to be sunny. Generally used on apples and grapes. Pear can also be applied, but pay attention to the sensitivity of different pear varieties to "copper ions", choose a dilution factor to prevent phytotoxicity. The method of using Bordeaux mixture and bactericide alternately is effective, and the interval is about 10-15 days.

4. Pay attention to the quality of the spray. The spray should be well atomized, the spray cloth is even and thoughtful, and the quality is guaranteed.
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