Ten points for attention in the use of Bordeaux liquid

1. Bordeaux liquid is a protective fungicide and must be used before the disease occurs.

2. Spray medicine in sunny, breeze or breeze weather, and strictly prohibit spraying in rainy, foggy and cloudy days, so as to prevent the liquid from drying in time after spraying on the crops, causing leaf burning.

3. Bordeaux liquid should not be mixed with sulfur-containing preparations such as stone-sulfur mixtures, and the two should be used on the same crop at an interval of more than half a month.

4. Bordeaux liquid is a strongly alkaline solution, which can not be mixed with drugs that react under alkaline conditions, so as to avoid decomposition, deterioration and failure of drugs.

5. Bordeaux solution should not be mixed with potassium dihydrogen phosphate and other foliar fertilizers containing phosphate ions, so as to avoid the reaction between copper ions and phosphate ions to form copper phosphate and precipitation failure.

6. Bordeaux solution must be cashed now so as not to affect the efficacy due to the long storage time and the precipitation of copper hydroxide after preparation.

7. when spraying, it is necessary to be meticulous and careful, so that the positive and negative sides of leaves, branches and fruits are evenly sprayed, so as to improve the effect of prevention and control.

8. Do not use iron, aluminum and other metal containers to dissolve copper sulfate and store medicine solution to avoid corrosion and damage.

9. Peach, plum, apricot, persimmon and Yali pear are sensitive to copper, and other fungicides are used without bagging fruit.

10. This agent should not be sprayed when it is wet and wet and the dew is not dry, otherwise it will cause copper ion to infiltrate into the plant and cause serious drug damage. (191 Farmers)