Bordeaux fluid is a broad-spectrum inorganic bactericide, and it is a pesticide that can be used in organic agriculture. It is formulated with copper sulfate, quicklime and water in a certain proportion. Sky blue colloidal suspension. Almost alkaline, almost insoluble in water, developed into a solution for a long time, the suspension of colloidal polymer will precipitate and lose bactericidal effect, so the application must be used with the distribution.
1. Preparation methods Bordeaux mixture method is divided into small amount of lime, half-quantity, equal amount, multi-type, multi-type and triple. In the preparation, put copper sulfate and quicklime separately into a container (cannot use metal containers, cement drug pool should be repaired when dispensing a lot of drugs, and cylinders or other non-metallic containers should be used when dispensing a small amount of drugs). Use half of the volume of each solution. When the copper sulfate and the quicklime are at the same temperature, the residue is filtered off. Slowly pour the sulphuric acid solution into the lime liquor and stir it while stirring to make it a Bordeaux mixture.
2. Control objects and methods of use Bordeaux fluid is one of the earliest protective acaricides used in organic agriculture and conventional agriculture. The liquid sprays on the surface of the crop to form a thin film with strong adhesion and is not easily washed by rain. Application of the disease, the former or early onset of the best spray, the general continuous spraying 2-4 times to control the disease.
(1) Control of cucumber bacterial leaf spot, anthracnose, potato late blight, tomato blight, late blight, gray mold, leaf mold, spot blight, canker, sweet pepper anthrax, soft rot , Scars, Eggplant Mushroom Disease, Brown Vein Disease, Legume Rust, Bac bean Bacterial Disease, Anthracnose, Cowpea Bacteria, Downy Mildew and Ginger Rot, etc. Available 1:1:200 times (copper sulphate wall, lime, lime , Bordeaux liquid spray.
(2) Prevention of cucumber downy mildew, disease, vine disease, onion downy mildew, purple onion spot, with 1:05. : 240-300 times (boron sulfate wall iron, quicklime, water) Bordeaux spray.
(3) Prevention and control of celery spot blight, spot disease, using 1:0.5 5:200 times (copper sulfate wall iron, lime, water) Bordeaux spray.
(4) Control of broad bean spot of Vicia faba, using Bordeaux liquid spray with 1:1:250 times (iron sulfate wall, limestone, water).
(5) Prevention of rapeseed, pea downy mildew, Bordeaux spray with 1:2:200 times (iron sulfate wall, lime, water).
3. Precautions
(1) Different vegetables have different sensitivity to copper and quicklime. Therefore, according to the requirements for the safety of vegetables, Bordeaux mixture should be used in an appropriate proportion to prevent phytotoxicity. Among them, tomatoes, vegetables, sweet (spicy) peppers and other vulnerable to lime damage, should use half-equal or the same type of Bordeaux mixture; cabbage, beans, lettuce, etc. susceptible to copper damage, should use multiple-type Bole multi-liquid.
(2) It is better to choose sunny spraying, rainy and foggy weather and flowering crops are prone to injury, and should not be used.
(3) High-quality quicklime and copper sulfate should be selected as raw materials and they should be used now.
(4) Do not mix with alkali decomposing agents.
(5) Do not pour lime into copper sulfate.
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Mixed Colorants
Mixed Colorants,Special Pigment,Mixing Food Coloring
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