Reasonable use of pesticide copper preparations

Reasonable use of pesticide copper preparations

In today's copper-containing pesticide formulations, the composition of the copper compound usually accounts for 8%-75%, and exists in one of the following ways: copper oxychloride, copper hydroxide, copper sulfate, tetraammine copper, and copper oxide. Common copper-containing pesticide formulations often contain impurities such as cadmium, lead, etc. The cheaper the pesticide content is, the more these impurities have adverse effects on plant growth. When using copper-containing pesticides, avoid adjusting the pH value of the solvent below PH6, because it will produce a large amount of copper and other impurity metal ions that can enter the plants and fruits, causing phytotoxicity to the plants. In actual use, the following points should be noted:
1. Use before bacterial or fungal signs appear.
2. When using, adjust the PH value of the pesticide above 6.
3. Evenly spray the leaves and fruits of the plants.
4. The drug efficacy will decrease with the growth of the plant, and there will be a reduction in the wet season. Therefore, it should be repeated when appropriate.
5. The smaller the pesticide particles, the better the effect and the longer the effective period.
6. Avoid mixing with other pesticides.
7. Avoid using when the temperature is high.
8. The application of low-concentration pesticides is better than applying high concentrations.
The common "organic copper preparations" on the market mainly include: Thiobacillus copper (Lonke), copper rosinate, copper amber (DT), copper humate, copper fatty acid, copper nitroacetate, copper quinoline, hydrazine Bacterial copper, copper naphthenate, copper soap liquid, copper amino acid, copper acetate, copper sulfamate, etc.
Technical advantages of organic copper preparations: Organic copper preparations are "mostly neutral, have better affinity and compoundability, are easy to use and safe to use, and are easy to handle; the copper content of organic copper preparations is even lower. The pollution is smaller, the impact on the crickets is smaller, the impact on the flowering period and young fruit period of the crops is smaller, and the use is more safe and secure.
Limitations of Inorganic Copper Preparations: Inorganic copper preparations are a class of commonly used bactericidal preparations that contain such ingredients in many agents that kill the eubacteria but the "inorganic copper preparations" have three major limitations and deficiencies:
First, it cannot be mixed with other acidic pesticides because inorganic copper preparations are mostly strongly alkaline;
Second, it is easy to produce phytotoxicity during flowering and young fruit use;
The third is that when used on fruit trees, it is easy to cause a large number of aphids (such as spider mites and white spiders), rust ticks and scale insects to multiply and occur.

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