Preparation of a Bordeaux liquid from a fungus on plants
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Bordeaux liquid as a fungicide - preparation, rules and regulations
Fungal diseases are a real scourge for plants. For a long time they could not find a remedy that would suppress the development of fungi and at the same time remain safe for the environment and humans. At the beginning of the 20th century, it was discovered by a French botanist in the city of Bordeaux. You guessed it, we will talk about Bordeaux fluid!
The product is a mixture of copper sulfate, hydrated lime and water. Most often, a 1% solution is prepared. We need 2 buckets of 10 liters each (only not iron!), 100 g of copper sulphate are dissolved in 1 liter of warm water (+ 35 ... + 45 degrees) in one, 200 g of slaked lime is poured into 5 g of water in the other. After that, both solutions are individually filtered through cheesecloth. The solution of copper sulfate is brought up to 5 l with water, and then poured into a bucket of dissolved slaked lime with a thin stream, stirring continuously.
The Bordeaux liquid is ready! It must have a sky-blue color.
To prepare an 3% solution, 300 g of copper sulfate and 450 g of hydrated lime are needed. Mix both solutions in a concentrated state, and then dilute the mixture with water can not. Also it is impossible to pour a solution of slaked lime into a container with a solution of copper sulfate.
Reference by topic: Bordeaux liquid is NOT as harmful as useful
The Bordeaux liquid is normal
A solution of Bordeaux liquid is used against scab, moniliosis, coccomicosis, curly, leaf patches. 1% solution is sprayed during the vegetation period with apples and pears, apricots, peaches, currants, gooseberries, raspberries, cherries, roses (against rust), grapes (against mildew and anthracnose), potatoes, tomatoes (against phytophthora).
The norms of the solution on vegetable crops are 5-10 liters per 100 square meters, on fruit crops - 15-20 liters per 100 square meters. Approximately 25 days before berry picking and 15 days before picking fruit, treatment should be discontinued
Determination of the "strength" of a solution of Bordeaux fluid
How "strong" the solution of Bordeaux fluid turned out, I check the old-fashioned method: I dip a clean stainless steel object (preferably an iron nail) into the composition. If it is covered with a reddish layer of copper - the solution is too strong for plants, it can burn, and you need to add a little milk of lime.
Reference by topic: Recipes for the preparation of solutions for spraying the garden from diseases and pests
Vasily Barkovets, Mr. Borisov and Irina Gurieva
Below other entries on the topic "Dacha and garden - with their own hands"
- Pests and diseases of currants and gooseberries and their control
- Tomato miner moth - pest control (Krasnodar Territory)
- Has the box turned yellow? How to save boxwood from boxwood moth!
- Minimum Colorado potato beetle - agrotechnical methods of disposal of the pest
- Folk remedies for aphids and gooseberries fireworks - my reviews
- Recipes of decoctions and infusions against pests: table-memo
- Fighting scab from fruit trees
- Pest and problem control in cucumbers and cabbage - specialist advice
- Diseases and pests of trees in the orchard - questions and answers
- Bronzovka beetle flower pest and how to get rid of it
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Tell me how to use Bordeaux liquid and copper sulfate for indoor plants?
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Copper-containing fungicides, such as copper sulfate and Bordeaux liquid (solution of copper sulfate in milk of lime), are widely used in agriculture, in the garden and in the garden. Their advantages: accessibility, low cost, a wide range of pathogens against which they work. Using these products for home flowers is not entirely appropriate, and there are several reasons for this.
1. LOW-EFFICIENT.
Typically, the grower begins to sound the alarm when the disease is already noticeable. Copper-containing preparations - contact fungicides - do not penetrate into the plant, therefore they cannot cause the death of the pathogen inside. They are effective in protecting, preventing, and not treating plants. At home, they are more often used when growing a large number of citrus fruits for the prevention of the disease - oily spots.
Mushroom diseases in indoor plants are largely triggered by poor conditions: powdery mildew occurs in the heat, with overdrying and lack of light; gray rot - in cool, moist, stagnant air. For treatment, systemic fungicides of a wide spectrum of action are suitable ("Skor", "Topaz", "Topsin-M", "Previkur", "Profit Gold").
2. UNCOMFORTABLE.
Packages of drugs are designed for large volumes of processing. And how to handle them at home? Firstly, you must strictly follow the instructions that are attached to them (not from forums from the Internet and other people's words). Ready solutions are not subject to storage, require strict observance of concentration. The preparation of Bordeaux liquid is rather laborious, the result should be a neutral solution, and its volume will be about 10 l. If the content of copper sulfate in it is more than necessary (acidic pH), then burns may appear on the leaves after processing. In case of an overdose of lime (pH alkaline), the protective effect will be lower. You cannot mix concentrated solutions of copper sulfate and lime milk, and then dilute with water, and pour lime milk into a solution of copper sulfate.
3. TOXIC.
Copper preparations are toxic to humans and warm-blooded animals, phytotoxic, especially at the stage of active growth. Copper compounds have a bactericidal effect, which can lead to inhibition of soil microflora in a small volume of the pot. Copper sulfate is aggressive, leaf burns are possible.
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I treat my garden only in the early spring with a Bordeaux liquid. The neighbor, according to my observations, is at least 10 times. Of course, the harvest is better, but my fruits are environmentally friendly. And what minimum of treatments in the garden is still necessary?
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In the gardens of Western Europe, for example, Poland, for the production of high-quality products during the growing season, farmers spend at least 15-20 treatments with pesticides. In your horticulture zone, lovers should adhere to the following protection system: in the early spring, spray fruit trees with 3% solution of Bordeaux liquid, before blossoming, prepare by instruction a tank mixture of insecticide and fungicide approved in your area - from cvethopoda and fungal diseases. Over the summer, to prevent scab and spotting, repeat this treatment 2-3 times (after the rain).
Drugs alternate - do not use the same medicine twice in a row! For 30 days before the maturation of the spray crop finish. At the end of the season after the fall of the fall, spend rooting the cultivation of trees and trunk circles with an 5-7% urea solution (500-700 g per 10 L of water).
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Earlier during the spring processing of the garden from fungal diseases used Bordeaux liquid. But she often hammered the sprayer nozzles, although she filtered the mixture before use.
Now he moved to the Burgundy liquid, which is not inferior to Bordeaux in efficiency. All components of the components dissolve well (there is practically no sediment), and therefore do not clog the sprayer. Another plus - Burgundy pollutes the leaves and fruits during processing. To prepare an 1% solution of Burgundy liquid, I take 100 g of soda ash and copper sulfate. In advance, I prepare two 10-liter glass containers (plastic can, but not metal ones). In one of them, in 2 l of warm water, I divert copper sulfate (100 g), then I increase the volume to 5 l by cold water. Likewise, in another container I raise soda ash. A thin trickle I pour a solution of copper sulfate into a solution of soda (but not vice versa!).
In the same scheme I also prepare 3% solution (I take 300 g copper sulphate and soda ash). The garden is treated only with a freshly prepared solution in the morning or evening.
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By efficiency Bordeaux and Burgundy liquids are not inferior to each other. In both cases, the active substance is copper sulfate. The advantage of the Bordeaux liquid is that you can buy it in any gardening shop in ready-made form and, using the instruction,
cook yourself. For the Burgundian mixture, you will have to buy individual ingredients. It will cost more, and cooking itself will require more time and special care in work.
Valery MATVEEV, Doctor of Science
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I learned my recipes from an experienced gardener, who used them for many years. To apply them it is necessary not at the moment of illness, and warning it. Treatments should be repeated every 10-14 days. (Do not spray flowers on flowering plants.)
If there are all kinds of rot, then the plant does not have enough potassium. In the first recipe, it is ash (or potash fertilizers).
RECIPE 1- A glass of wood ash pour hot water -1 liter (but not boiling water) and leave to cool. A bag of boric acid bought in a pharmacy is visually divided into four parts (i.e., four times) and diluted in 9 liters
water one piece. There I add water from the filtered infusion of ashes and a tablespoon of pharmacy iodine. With this mixture I sprinkle my vegetable plants. In garden crops (trees shrubs, strawberries, raspberries) I begin as soon as leaves appear,
RECIPE 2 After planting seedlings in the ground and after growing 2-4 leaves, I spray it with this solution: 1 liter of whey and 10 drops of iodine on a bucket of water. Spraying every two weeks.
RECIPE 3. Phytophthora is always in the ground. Therefore, before planting, I water it with Phytosporin. And as soon as tomatoes grow to
20 cm, I mulch the earth around, so that under the tomatoes there would be no bare earth. It is good to use cereal meadow grasses, and in the garden - an ordinary wheat grass (almost this is hay). Landing looks neat. But I use quinoa, wormwood, and even celandine, which we have all along the fence. By the way, I do not pull the wormwood with the root, but cut it off with a sickle. It grows again, and again it can be used like mulch. You enter the greenhouse, there is a strong wormwood smell, reminiscent of the smell in a hospital or pharmacy. I think the volatile, which gives off wormwood, and kill infections in the greenhouse. I would be glad if my advice is useful to someone.
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Often I meet simply impossible ways of preparing a Bordeaux liquid, where everything is verified as if by eye.
But there is a typical scientifically based her prescription. Here it is: to prepare 10 l Bordeaux liquor, take 100 g of copper sulfate, dissolve in 5 l of hot water, then 100-120 g of quicklime is dissolved (quenched) in 5 l of water. After cooling of both solutions, the first of them, with constant stirring, is slowly poured into "lime milk". It turns out 1% Bordeaux liquid. If you need a solution of 3%, then the number of components increases in 3 times by the same 10 liters of water. Therefore, it is absolutely unclear how one of the readers gets 3% solution, dissolving 1 kg of vitriol and lime in 20 l of water? The total volume of the mixture is placed in a container with a capacity of 30 l, from which it is clear that each of the components it has dissolved in 10 l of water. It can only be obtained with an 5% solution. To use this concentration is to kill all life in the earth.
And further. Use copper sulfate to combat powdery mildew on gooseberries is absolutely pointless. This disease can be defeated only by a solution of calcined soda (50 g per 10 L of water), which is also known to all from time immemorial.
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For the protection of floral plants against fungal diseases for preventive purposes, I spray them with 1% solution of Bordeaux liquor or 0,5% solution of copper chloride.
Lilia REYTAROVSKAYA