Basic copper sulfate, also known as Green Debao, Baoguo Ling, bactericidal special, Green Xin, Yunda, Tianbo, tribasic copper sulfate, high copper, and noble copper. The main dosage forms are 27.12%, 30%, and 35% suspension agents; 50% and 80% wettable powders; 70% water dispersible granules.

1、 Physical and chemical properties and characteristics

The appearance is light pink blue, with a melting point>360 ℃. The relative density is 3.89 (20 ℃), and the solubility in water is 1.06 milligrams per liter (20 ℃). Very small blue suspended particles will form in the medicinal solution, which are soluble in dilute acids. It can be stably stored for 3 years at room temperature and can be mixed with water in any ratio to form a relatively stable suspension.

2、 Characteristics of basic copper sulfate

1. It is a mineral source, inorganic copper, protective, low toxicity fungicide that effectively fights against fungal and bacterial diseases, making it an ideal substitute for traditional Bordeaux wine.

2. The suspension agent is an adhesive that can firmly adhere to the surface of plants to form a protective film after spraying. Under the action of water and air, its active ingredients gradually release free copper ions. Copper ions bind to various genes in pathogenic denatured proteins, controlling the germination of pathogenic spores and hyphal development, leading to the death of pathogenic bacteria.

3. Good dispersibility and resistance to rainwater erosion.

4. Compared with the self-made Bordeaux solution, the basic copper sulfate solution has smaller particles, is convenient to use, and has better safety. After spraying, there is no obvious drug spot pollution on the plant surface, but the shelf life is short.

Copper basic sulfate has a wide insecticidal spectrum and is suitable for all diseases controlled by Bordeaux liquid. After spraying, relying on the acidification of the water film on the surface of crops and pathogens, a small amount of copper ions can be slowly decomposed, effectively controlling the growth of pathogen spores and hyphae, reducing the infection and spread of pathogens, and protecting crops.