Precautions for Bordeaux liquid, the role and use of Bordeaux liquid are

Prevention of drug damage. Do not spray stone sulfur mixture within 15 to 20 days after spraying Bordeaux liquid. Do not spray Bordeaux liquid within 30 days after spraying mineral oil emulsion to avoid pesticide damage.

It is forbidden to use metal containers when dispensing pharmaceutical liquids.

When preparing by injection method, only dilute copper sulfate liquid can be poured into concentrated lime milk, and the order cannot be reversed, otherwise the prepared liquid will precipitate quickly and be prone to pesticide damage.

The liquid medicine should be prepared with use, and it is easy to precipitate and deteriorate after more than 24 hours, and can not be used again.

The prepared liquid medicine shall not be diluted again.

When spraying, it is necessary to be meticulous and thoughtful, and in case of heavy rain after spraying, lime milk should be replenished in time after the weather is clear.

Bordeaux liquor is alkaline and cannot be mixed with acidic pesticides and stone sulfur mixtures.

Bordeaux liquid is used as a fungicide, Bordeaux liquid is a protective fungicide, is a common agent for the prevention and control of fruit leaves, fruit diseases, the finished product is sky blue, slightly alkaline suspension, and its active ingredient is basic copper sulfate. It is a sky blue gelatinous suspension formulated from about 500 grams of copper sulfate, 500 grams of hydrated lime and 50 kilograms of water.

It is generally alkaline and has good adhesion properties, but it is suitable to be used for a long time or made of dehydrated Bordeaux powder, and then mixed with water when used. 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. After the rainy season, Bordeaux juice is used to control grape diseases.

Fungicide characteristics:

According to the sterilization mechanism, it can be divided into two categories: oxidizing fungicides and non-oxidizing fungicides. Oxidizing fungicides are usually strong oxidants, which mainly achieve the purpose of sterilization by oxidizing with metabolic enzymes in bacteria.

Commonly used oxidizing fungicides include chlorine, chlorine dioxide, bromine, ozone, hydrogen peroxide, etc. Non-oxidizing fungicides act on the special parts of microorganisms in the form of toxic agents, so as to destroy the cells or life of microorganisms to achieve bactericidal effects, common non-oxidizing fungicides are chlorophenols, isothiazolinones, quaternary ammonium salts, etc.

The above content refers to Encyclopedia - Bordeaux liquid.

Bordeaux liquid is an inorganic copper biocide.

The chemical composition of its active ingredient is CuSO4·XCU(OH)2·YCA(OH)2·yearFrench AMjalldai discovered its bactericidal effect in the city of Bordeaux, hence the name Bordeaux liquid. It is a sky blue gelatinous suspension formulated from about 500 grams of copper sulfate, 500 grams of hydrated lime and 50 kilograms of water.

Bordeaux liquor is a plant bactericidal protective agent made of copper sulfate, calcium oxide (quicklime) and water, which has a good control effect on most fungal diseases and bacterial diseases, and does not produce resistance to long-term use.

1882 French AMjalldai discovered its bactericidal effect in the city of Bordeaux, hence the name Bordeaux liquid. It is a sky blue gelatinous suspension formulated from about 500 grams of copper sulfate, 500 grams of hydrated lime and 50 kilograms of water.

In the case of high relative humidity and dew or water film on the leaf surface, the efficacy is better, but it is easy to cause pesticide damage to plants with poor copper tolerance. It has a long effective period, and is widely used to prevent and control a variety of diseases such as vegetables, fruit trees, cotton, hemp, etc., and has a particularly good effect on downy mildew, anthracnose, potato late blight and other leaf diseases.

1. Metal utensils should not be used for the preparation of containers, and the sprayed medical equipment should be washed in time.

2. It cannot be prepared into a concentrated Bordeaux liquid and then diluted with water. The Bordeaux liquid prepared at one time is a glue suspension, which is relatively stable, and if water is added, it will form a disturbing oak precipitate or crystallization and affect the quality, which is easy to cause pesticide damage.

3. Lime milk cannot be poured into dilute copper sulfate, so the Bordeaux liquid is extremely unstable and easy to precipitate.

4. Concentrated copper sulfate cannot be poured into lime water, so the Bordeaux liquid is unstable and of poor quality.

5. The copper sulfate in Bordeaux liquid is toxic, if you eat Bordeaux liquid by mistake, you should eat egg white in large amounts.

What are the precautions for the use of Bordeaux liquid? Bordeaux liquid size formula: (1 kg of copper sulfate, 2 kg of quicklime, 160-200 kg of water).

Multiple formulas: (1 kg of copper sulfate, 3 kg of quicklime, 160-200 kg of water). Fruit trees will use the proliferation formula until June 20.

First prepare 2 large plastic buckets, separate 200 catties of water, then use 1 small bucket to take water from the inside, and then use 1 small bucket. Hydrate the quicklime of the No. 2 cylinder with 1 rubber bucket, empty it into the No. 2 cylinder, stir it in the direction to form a lime emulsion, and then pour the copper sulfate (No. 1) into the No. 2 lime emulsion and stir in the same direction.

<> it is formulated as a suspension of Bordeaux liquid. (Remember, the copper sulphate solution must be poured into the lime emulsion.) Bordeaux liquid is also called here (lime-sulphur mixture).

It is a homemade fungicide. It uses copper sulphate and quicklime as raw materials. Press 1:

Prepared at a scale of 1:150. 1% copper sulfate, 1% quicklime and 150% water can be prepared.

In the production process, copper sulphate and quicklime are made into mother liquor respectively. Copper sulfate must choose pure blue crystals well. Quicklime is more important.

It must be burned, white, and well-lit to pick it up. Take two sheets of quicklime. Good quicklime has a crisp sound.

At this point, add the appropriate proportion of water to the prepared cauldron and start boiling over high heat. After the water is boiled, pour the copper sulfate mother liquor into the pot with a wooden stick or iron rod and stir it in one direction. After boiling, slowly pour the quicklime mother liquor into the pot and stir constantly, and the high heat will continue to burn.

If the pot is boiling, use an iron drill to raise it to prevent the sludge from coming out of the pot. Bring the heat to a boil for about fifty minutes. Bordeaux liquid is different from other biocides.

Other fungicides can be used for a long time to make bacteria resistant to antibiotics, while Bordeaux liquid cannot.

Bordeaux liquid can be disinfected because it forms a very thin protective film on the surface of the crop after use. The acidic substances secreted by these protective films during the growth of crops allow them to precipitate copper ions, which denature the bacteria when they come into contact with proteins, causing them to die. Bordeaux liquor is usually made by first dissolving and diluting copper sulphate and quicklime with water, and then mixing them together to make Bordeaux liquor.

In the preparation of Bordeaux liquid, different ratios can be formed according to the amount of copper sulfate and quicklime, such as half-weight formula (:1), equal weight formula (1:1), double-weight formula (1:

2) etc.

Bordeaux liquor is an inorganic copper biocide. The active ingredient is CuSO4·XCU (OH) 2·YCA (OH) 2·year, French AMialdei discovered its bactericidal effect in Bordeaux, hence the name Bordeaux liquid.

It is a sky blue colloidal suspension consisting of about 500 grams of copper sulphate, 500 grams of quicklime and 50 kilograms of water.

To prevent and control early apple defoliation, anthrax, and grain diseases, you can spray Bordeaux liquid lime 200 240 times liquid at the beginning of apple flower dropping, and spray it for half a month. and other fungicides alternately, a total of 3, 4 times. For the prevention and control of rot diseases (ring disease, anthrax), you can spray the fruit with lime times or more 200 times the solution of Bordeaux liquid in the first 10-15 days, spray 1 time every 15-20 days, or even spray 3-4 times, pick 25 days before stopping.

To prevent and control flower and fruit diseases, you can start spraying 5 Fumei Double 50 Water Solution 500 times liquid 3 weeks after flowering, and spray once every half month. Or spray 50 times of 50 methyl tobuzine wettable powder, and spray once every 7 days. In addition, 7 to 10 days before harvesting, spray 5 pyrethroid EC 2000 times or 50 malathion EC 1500 times, which can be controlled.

To prevent and control apple rust fruit disease, you can spray l times every 7 10 days with 25 prometriin cypermethrin 50 100 times or 25 anti-mold concentrate 1500 times every 7 10 days after flowering to one month before fruit picking, and spray 1 time every 7 10 days.

Anthrax. In mid-May and early June, spray or soak with 500 times of 25% anti-sweep wettable powder, or 500 times of 5-methyl tobuzin wettable powder or spray with liquid medicine after soaking to prevent and treat anthrax and virus diseases. Prevention and treatment of apple ring disease, apple red spider.

After each spraying of the selected liquid medicine, at about 10 o'clock in the morning and when the temperature is high in the evening, spray 1500 times of 40 pine wettable powder, or 1000 times of 5-methyl tobuzin wettable powder, or 2000 times of 30 sulfazine wettable powder, spray once every 7 10 days, and spray 3 4 times continuously.

Lime liquid, washed, precipitated, homogeneous. The lime solution must not be poured into the copper sulfate solution, otherwise the prepared liquid will precipitate quickly and will be prone to pesticide damage. Spray evenly, paying attention to the back of the leaf.

As long as the Bordeaux liquid on the leaves is dry, do not fight again. If it rains and the leaves have dried up, there is no need to spray them again. If the liquid medicine is not dry, spray lime water the next day to prevent pesticide damage.

Do not use metal utensils, must be cleaned in time, used things are to be cleaned, must pay attention to safety, peach and plum and other fruit trees can not be used, can not be used with alkaline pesticides.

First of all, it is necessary to dilute it with water in advance, and then it is also necessary to choose the right agent and the right concentration according to the variety and category of crops, we must pay attention to the time of use, choose the time when the temperature is more suitable, try to choose at 10 o'clock in the morning, and we should also do a good job of personal protection, and we should also ventilate in time.

Grasp the concentration of the solution, pay attention to the time of spraying, pay attention to the frequency of spraying, grasp the spraying site, and also prevent plants from becoming resistant.

At present, there are a lot of pesticides, their corresponding efficacy and characteristics are different, and the use of pesticides and precautions are many, farmers may not be very clear, Bordeaux liquid is a kind of pesticide, for this pesticide as a farmer should do to understand, then let's talk about Bordeaux liquid.

1. Bordeaux liquid.

Bordeaux liquid it is an inorganic copper fungicide, which is generally alkaline, and has good adhesion properties, if the physical properties of the destruction of a long time are more suitable for use or made of wet water, Bordeaux liquid is mixed with water when it is used, Bordeaux liquid actually has a good adsorption effect, although there is no sterilization effect, it can be sprayed on plants. Carry out the corresponding adsorption, and the metabolic process of the plant will secrete acidic liquid, coupled with the invasion of bacteria, the acidic substances secreted by plant cells use Bordeaux liquid to synthesize with its own alkaline substances and the acidic liquid secreted by metabolism, and play a corresponding role.

Second, the characteristics of Bordeaux liquid.

Bordeaux liquid has a lot of characteristics, it has a lot of performance characteristics, Bordeaux liquid can release soluble copper ions and inhibit the spore germination of pathogenic bacteria and mycelial growth under acidic conditions, copper ions will be released in large quantities, and can also coagulate the cell protoplasm of pathogenic bacteria and play a bactericidal role, when the relative humidity is relatively high, the page has dew or water film, the efficacy will be better, but it is easy to produce drug damage to food that is resistant to the same spread, and the timeliness is long. It is widely used in the prevention and control of various diseases such as vegetables and fruit trees, and has obvious effects on leaf diseases such as double mold.

3. Precautions for the use of Bordeaux liquid.

The precautions of Bordeaux liquid are mainly to pay more attention to the use, for example, to pay attention to the selection of pure and high-quality white quicklime blocks or pure blue copper sulfate, and to pay attention to the copper sulfate can not be entrained with green and yellow impurities, but also to master the formula, to pay attention to the use of medicine, after the arrival of the rainy season, it is not suitable to spray Bordeaux liquid, as well as the use of Bordeaux liquid, which is alkaline, can not be mixed with stone sulfur mixture, etc., but also timely and safe spraying, the use of Bordeaux liquid, Avoid high temperature and high humidity weather, different crops react differently to Bordeaux liquid, and pay attention to the safety of copper sulfate and lime for crops when eating.

It is necessary to pay attention to the efficacy of this pesticide, but also to pay attention to the ingredients contained in it, and to pay attention to the method of use, not to put it in a metallic tool, and to pay attention to the chemical reaction of this pesticide.

Bordeaux liquid is a protective biocide, so it should be used before the onset of the disease. Spraying should be carried out on sunny days, not in rainy days or hot weather, otherwise the leaves will be burned.

At this time, we must pay attention to the concentration, and at the same time do not use too much at one time, and we also need to choose pesticides according to crops, and it is necessary to determine the time of use, and we should also do a good job of drainage and ventilation.

What are the top ten precautions for the use of Bordeaux liquid? Bordeaux liquor is the pesticide of choice for the production of cruelty-free fruits. It is a high-quality fungicide made from copper sulphate and quicklime.

There are a number of unique advantages in terms of prevention and ** disease, but at the same time be aware of some contraindications. Below, I will go through its functions, applicable features, use time and specifications, and attention to 、..Possible manifestations and prevention of phytotoxicity are detailed.

<> analysed these measures in several ways. Prevention of Bordeaux fluid is primarily based on prevention. When sprayed on crops, the solution settles slowly and creates good adhesion on the crop surface, which inhibits the germination and infection of pathogenic spores.

It has a significant bactericidal effect on fruit tree spores, anthracnose, black spot, brown spot, black spot, late rot, downy mildew and other diseases. Livestock are less toxic and crops are less susceptible to developing resistance. Bordeaux sap is a typical agent for the control of bacterial diseases of fruit trees, such as white rot, downy mildew, black spot and anthracnose.

These diseases are mainly concentrated in vines, apple and pear trees. Waiting for the most common fruit trees on these farms, so the use of Bordeaux sap is more of a "daily fruit tree management". From apple fruit to sets, you can't use Bolin liquid.

When the apple swells, if you notice spots on the leaves on the tree, then the yellow leaves will fall off. Bordeaux liquid is the best ** medicine. Remember, you can't wait until something is wrong with the leaves to use this medicine.

Then it will be too late.

You have to wait until the apple is swollen and the leaves are normal. At this time, spray Bordeaux liquid to prevent the leaves from appearing. You must know that Bordeaux liquid is alkaline and cannot be mixed with acidic substances when used.

This will not only greatly reduce the efficacy of the drug, but can even cause severe plant toxicity. Note that the most common acidic insecticide is a multibacterial insecticide. Rhombus, mancozeb, lime-sulfur mixture, etc., if both are to be used, then I recommend that the interval between the two is 15-20 days.