Why can Bordeaux sap control pests, and what pests and diseases can Bordeaux sap control?

Bordeaux liquid itself does not have a bactericidal effect, and when it is sprayed on the surface of the plant, it is adsorbed on the surface of the crop due to its adhesive properties. In the process of metabolism, plants secrete acidic liquids, which, together with the acidic substances secreted by bacteria when they invade plant cells, convert a small amount of basic copper sulfate into soluble copper sulfate in Bordeaux solution.

As a result, a small amount of copper ions (Cu2+) is produced, and Cu2+ enters the cells of the germ, causing the proteins in the cells to coagulate. At the same time, Cu2+ can also destroy a certain enzyme in its cells, so that the metabolism in the bacterial body cannot be carried out normally. Under the influence of these two effects, bacteria can be poisoned and killed.

Bordeaux liquid: copper sulfate + calcium hydroxide, copper ions are heavy metal ions, highly toxic (proteins will be denatured when encountering heavy metal ions).

So why don't you ask why pesticides kill insects?

What diseases can Bordeaux liquid prevent?

Bordeaux liquid is an excellent protective fungicide, widely used in fruit trees, vegetables and cash crops, and has a good control effect on downy mildew, cotton rot, anthracnose, seedling cataplexy caused by fungi.

1. Prevention and control of apple rust and dry rot: spray 1 2 times from the germination of fruit trees to the young fruit stage. The ratio of Bordeaux liquid is 1:2:200 (1 part copper sulfate, 2 parts quicklime, 200 parts water, the same below).

2. Prevention and control of apple anthracnose, ring disease, and early defoliation: According to experience, 10 14 days before the appearance of diseased fruits, spray Bordeaux liquid once every 15 20 days, and stop 20 25 days before the fruit harvesting period, a total of 5 6 sprays. The ratio is 1:

3. Prevention and control of pear rust and brown spot: From the beginning of the pear tree leaf development period, spray once every 10 days or so, and spray 3 times in a row. The ratio is 1:2:200 240.

4. Prevention and treatment of pear scab: Start from the discovery of diseased shoots or diseased flowers, spray once every 10 20 days. The ratio is 1:2:200 240.

5. Prevention and control of grape black pox: spray grapes once before and after flowering. The ratio is 1::200.

6. Prevention and control of grape anthracnose, downy mildew and house blight: 7 In the grape growing season in September, spray once every 15 days. The ratio is 1::160.

7. Prevention and control of vegetable or other crop diseases: It is necessary to spray pesticides before or at the beginning of the occurrence of diseases.

Bordeaux liquid is a protective fungicide, mainly to prevent various fungal and bacterial diseases, once the disease occurs, the effect is not good.

It is a fungicide, not an insecticide.

It has the effect of sterilization and disease prevention on plants. Bordeaux liquid does not kill insects.

Bordeaux liquid is a good protective agent against a variety of fungal diseases, oomycete diseases and bacterial diseases.

Conclusion:The use of Bordeaux liquid should be sprayed before the occurrence of the disease, the prevention effect is very good, if the disease has been spreading, the effect is poor.

Bordeaux liquid can prevent mycosis and rhizobia of plants, and can reduce plant pathogens.

It seems that you can do it, you can do it, this Bordeaux solution is quite powerful.

Bordeaux sap mainly controls plant pests and diseases: spider mites, and aphids.

Bordeaux solution inhibits spore germination or hyphal growth of pathogenic bacteria by releasing soluble copper ions.

Under acidic conditions, when copper ions are released in large quantities, they can also coagulate the cell protoplasm of pathogenic bacteria and play a bactericidal role.

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Abstract Hello, the insecticides mixed with Bordeaux liquid include dicofol, trichlorfon, pyrethrins, rapid killing, jinggangmycin, etc. Bordeaux liquid is an alkaline pesticide, which cannot be mixed with acidic agents, nor can it be mixed with sulfur mixtures and pine resin mixtures, so as not to reduce the efficacy or cause pesticide damage.

What pesticides can be mixed with Bordeaux liquid.

Hello, the pesticides mixed with Bordeaux liquid include dicofol, trichlorfon, pyrethrins, rapid dichloride, jinggangmycin, etc. Bordeaux liquid is an alkaline pesticide, which cannot be mixed with acidic agents, nor can it be mixed with sulfur mixtures and pine resin mixtures, so as not to reduce the efficacy or cause pesticide damage.

Can Bordeaux liquid be mixed with averospirofen.

Hello, theoretically it can be matched, but it will affect the effect, and different ratios will also lead to problems, it is recommended not to match them together, and Bordeaux liquid is an alkaline pesticide, averospirolate is acidic, acid and alkaline pesticides mixed together, it will decompose and destroy, reduce the efficacy, and even cause drug damage.

OK. The mixture of Bordeaux is an inorganic fungicide. The chemical composition of the active ingredient is CuSO4·XCU(OH)2·YCA(OH)2·ZH2O.

In 1882, the Frenchman AMiardet found the bactericidal effect in Bordeaux, hence the name Bordeaux mixture.

It is a sky blue colloidal suspension made of about 500 grams of copper sulphate, 500 grams of hydrated lime and 50 kilograms of water. The ratio of ingredients can be appropriately increased or decreased as needed. It is usually alkaline and has good adhesive properties, but can damage physical properties after long-term exposure.

Bordeaux powder should be prepared for immediate use or made into dehydrated. Mix with water before use.

The Bordeaux mixture itself has no bactericidal effect. When it is sprayed on the surface of a plant, it adheres to the surface of the crop due to its adhesion. During metabolism, plants secrete acidic fluids, and the acids secreted when bacteria invade plant cells convert a small amount of basic copper sulfate in the Bordeaux solution into soluble copper sulfate.

As a result, a small amount of copper ions (Cu2) is generated. After Cu2 enters the bacterial cell, the proteins in the cell are solidified. At the same time, Cu2 can also destroy certain enzymes in its cells, thus preventing the metabolism of bacteria from proceeding properly.

Under the influence of these two effects, the bacteria may be poisoned and killed.

Bordeaux liquid is an inorganic copper fungicide, which has been used in pesticide cultivation in China for many years, and there are many misunderstandings in its use. Some farmers believe that Bordeaux liquid is an alkaline pesticide and cannot be mixed with imidacloprid, acetamiprid, acetophosphine aluminum and other agents.

First of all, Bordeaux liquid is a weak alkaline agent mixed with copper sulfate and quicklime, which will not immediately react strongly with acidic agents, and will not immediately neutralize the efficacy of insecticides and fungicides. Insecticides can be added with imidacloprid, acetamiprid, thiamethoxam, perchloroma, emamectin perchlorine, etc.; To kill red spiders, you can add acitretinazole, emamectin cyanide, etc.; Foliar fertilizer can be added to Otin A, etc.; To prevent fruit drop before harvesting, naphthalene acetic acid can be added.

It needs to be solemnly reminded that the amount of insecticide and sterilization added should be increased by about 30% (for example, 1000 times usually, 700 times when added to Bordeaux liquid), it must be prepared and used, and it must not be placed for too long.

In addition, Bordeaux liquid has a miraculous effect on the following drugs:

1.Ammonium bicarbonate.

Bordeaux liquid combined with 330 times ammonium bicarbonate can not only play the role of foliar fertilizer, but also effectively kill apple cotton aphid and red spider, and the effect is unique in apples, pears and grapes for many years.

2.Carbendazim.

Bordeaux liquid is a protective fungicide, and the addition of carbendazim (systemic fungicide) plays a dual role in protecting apple diseases such as blight rot, brown spot, anthracnose leaf blight, spot defoliation and various fruit rots.

3.Thiram.

The combination of these two works well on grape white rot**.

4.Ethylphosphine aluminum.

The combination of these two is very unique in its ability to protect against downy mildew.

5.Anthrax Fumei.

The combination of these two is very good for the protection and ** of grape anthracnose and apple anthracnose.

6.Urea. The combination of these two has a very good effect on the strengthening of weak trees.

7.Washing powder.

The combination of these two has strong resistance to rain washing, which is conducive to improving the efficacy of the drug and can also treat aphids.

8.Sugar. Together, these two can prevent precipitation very well and are also very expandable.

Bordeaux liquid is a mixture of copper sulfate and lime water, copper ions can make the protein of the pest irreversibly denatured, so that the pest dies, and the addition of lime water is to make them produce copper hydroxide and calcium sulfate (gypsum), so that the pesticide can better adhere to the plant, play the maximum effect.

The chemical composition is CuSO4·XCU(OH)2·YCA(OH)2·zh2O, which is a sky blue gelatinous suspension formulated from about 500 grams of copper sulfate, 500 grams of hydrated lime, and 50 kg of water.

Heavy metal salts such as lead salts, copper salts, and mercury salts can coagulate and denature proteins, so Bordeaux liquid can control pests and diseases.

Summary. Bordeaux liquid can be mixed with pyrethroids, rapid killing, Jinggang mold, etc.

Bordeaux liquid is an alkaline agent, which should not be mixed with acidic drugs, such as stone sulfur mixture, Fumeibi, Fumei arsenic, antibacterial special, etc.

What pesticides can be mixed with Bordeaux liquid.

Bordeaux liquid can be mixed with pyrethroids, rapid killing, Jinggang mold, etc. Bordeaux liquid is an alkaline agent, which should not be mixed with acidic drugs, such as stone sulfur mixture, Fumeibi, Fumei arsenic, antibacterial special, etc.

Hope it helps