These matters should be paid attention to when Bordeaux liquid is mixed with insecticides and fungicides.

Bordeaux liquid is a mixture of lime and copper sulfate. At the beginning, Bordeaux liquid was not used for sterilization, but the "poison" of vineyard farmers to prevent roadside people from secretly eating grapes and spilling grapes. It was later discovered by botanists that it was used to prevent and cure grape "mildew leaf disease". The effect is very good.

Science Xingnong has mentioned many times that in the process of mixed use of chemical fertilizers or pesticides, it is necessary to grasp three principles: the first principle is that mixed pesticides or chemical fertilizers cannot produce chemical reactions. the second is that the mixed drugs cannot reduce the original efficacy, and the third is that the mixed use can not cause harm to crops. While Bordeaux liquid is an alkaline fungicide, while most pesticides are acidic, not many of them can be mixed with Bordeaux liquid. Let's take a closer look at it.

Bordeaux solution and organochlorine insecticides were mixed.

Bordeaux liquid was first used in China in the late 1940s, when organochlorine pesticides were applied in the 1970s, with a large number of commonly used DDT, BHC, toxaphene and other organochlorine pesticides, while BHC, DDT and other organochlorine pesticides stopped production in the 1980s. At present, organochlorine pesticides are registered as ddt pesticides in China as raw materials for the production of dicofol.

Diclofenac has a good effect on red spiders and ticks of fruit trees. Can be mixed with Bordeaux liquid to reduce labor. But we all know that after World War II, organochlorine pesticides were widely used all over the world, and the amount of agricultural drugs left in the environment was very large, which was the biggest culprit of carcinogenic, teratogenic and mutagenic effects. So, if you don't need it, try not to use it.

Mixture of Bordeaux solution and trichlorfon.

Trichlorfon is an organophosphorus insecticide, which is suitable for the pests of chewing mouthparts on fruit trees and has good contact and stomach killing effect. The mixture of trichlorfon and Bordeaux solution can turn trichlorfon into dichlorvos, the toxicity is increased tenfold, but the efficacy time is shortened.

After thinking about it, Bordeaux liquid can only be mixed with these two agents, but there are many drugs that can not be mixed with Bordeaux liquid, such as carbendazim, thiram, stone sulfur mixture, benzoylammonium and so on. In actual production, it is difficult to apply Bordeaux liquid to fertilize or prevent other diseases and insect pests.

Therefore, you should be very careful when mixing other drugs. I don't know if you have mixed with other pesticides when using Bordeaux liquid, and what else can be mixed? welcome to discuss.

Here is science to promote agriculture, welcome to add attention, with you to grow knowledge.