1. The quicklime used for preparation must be of good quality. Do not use weathered lime. Lumpy lime can be stored in large cylinders or plastic bags for storage. If there is no lump lime, the building lime that is filtered in the lime pool can also be used, but the surface layer should be removed and the amount should be doubled. 2. The copper sulphate dissolves slowly in cold water. In order to increase the work efficiency, the copper sulphate can be completely dissolved with a small amount of hot water, and then the water can be added in a sufficient amount. 3. Do not use metal containers for the preparation and storage of Bordeaux mixture (chemical properties of copper than the active metals include: calcium, magnesium, aluminum, iron, tin, etc.), sprayer after use should be promptly cleaned to avoid corrosion damage. 4. Bordeaux fluid is a kind of bactericide mainly based on preventive protection. The spraying must be uniform and detailed so as not to make excess liquid flow from the leaf surface. 5. In cloudy days, when there is dew, or when the temperature of sunny days exceeds 30 °C, spraying at noon is easy to produce phytotoxicity, so it should not be used at this time. 6. After the Bordeaux mixture is prepared, the polished buds are placed in the liquid and soaked in the liquid for 1 to 2 minutes. After the knife is removed, if the knife has dark brown copper ions, some lime water must be added to the liquid. Otherwise it is prone to phytotoxicity. 7. Bordeaux fluid is an alkaline fluid and cannot be mixed with acidic agents to prevent decomposition. Fruit trees that have been sprayed with lime sulfur, petroleum emulsion or pine oil mixture need to be separated by 20 days to 1 month before Bordeaux mixture can be used, otherwise phytotoxicity will occur. The fruit is deactivated 20 days before harvest. 8. Fruit trees prone to phytotoxicity should be used with caution. When applied, reference may be made to the sensitivity of the main fruit trees to pesticides. Such as peaches, plums, apricots, cherries, and other stone fruit trees, Bordardo liquid during the growth period is prone to phytotoxicity resulting in defoliation, the use of time and concentration, should pass a small area test, and then promote the use of a large area. 9. Bordeaux mixture must be used with it. Do not leave it for too long. After 24 hours, it will undergo qualitative changes and should not be used. 10. It is not possible to prepare a concentrated Bordeaux mixture and dilute it with water. The Bordeaux mixture once formulated is a colloidal suspension and is relatively stable. If water is added, precipitation or crystallization will be formed, which will affect the quality and cause injury. 11. Do not pour lime milk into dilute copper sulphate. The Bordeaux mixture thus formulated is extremely unstable and prone to precipitation. 12. Do not pour concentrated copper sulfate into lime water. The Bordeaux mixture thus formulated is unstable and of poor quality. 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 Genetic Analyzer,Genetic Analyzer For Cnp,Genetic Analyzer For Str,Genetic Analyzer For Snp Nanjing Superyears Gene Technology Co., Ltd. , https://www.superyearsglobal.com
What should be noted when preparing and using Bordeaux mixture