Basic copper sulfate is a commonly used fungicide. It […]
Basic copper sulfate is a commonly used fungicide. It is suitable for use before and during the onset of plant disease. What kind of disease is treated with basic copper sulphate?
First, the basic shape of basic copper sulfate
Basic copper sulfate is a green monoclinic crystal with very low solubility in water and soluble in dilute acid and ammonia.
The original drug is light blue viscous flow suspension, the suspension rate is more than 90%, the pH is 6-8, the cold and heat storage stability is qualified, the storage is stable under normal temperature conditions for 3 years, the particle size is fine, and it can be mixed with water at any ratio. A relatively stable suspension.
Basic copper sulfate does not contain any harmful impurities, is not easy to produce phytotoxicity, is resistant to rain erosion, does not leave any residue on the plant surface, has no resistance, and can be mixed with common pesticides, such as 1605, omethoate, monocrotophos, horse. Desulforate, phoxim and pyrethroid pesticides.
Second, what is the treatment of basic copper sulfate?
Basic copper sulfate is a broad-spectrum protective bactericide that treats most fungal and bacterial diseases of plants. Basic copper sulfate is generally used before or during the onset of the disease, and should not be mixed with the stone sulphur mixture and the pesticide decomposed by copper.
The mechanism of action is: when the agent is sprayed on the surface of the plant, the alkaline copper sulfate is converted into a soluble substance due to the secretion of acidic liquid during the metabolism of the plant and the acidic substance secret by the bacteria when invading the plant cell, and a small amount of soluble Cu2+, Cu2+ is generated. After entering the pathogen cells, the proteins of the cells are coagulated.
At the same time, Cu2+ can also destroy certain enzymes in the cells, thus hindering the normal progress of metabolism. Cu2+ can also be exchanged and adsorbed with cations (H+, Cd2+, K+, NH4+) on the plasma membrane to poison.