Alkalinity or acidity depends on the specific type of fungicide. Most are acidic or neutral, and a few are alkaline.
The acidity and alkalinity of the fungicide need to be determined according to the specific type. The following is a comprehensive analysis:
Most fungicides are acidic or neutral
Most of the fungicides used in daily life are acidic or neutral (pH≤7), such as organophosphorus (such as dichlorvos), organic nitrogen (such as furadan), pyrethroids (such as dimethoate), etc. This type of agent usually cannot be mixed with alkaline substances (such as lime and soap), otherwise it will cause decomposition and ineffectiveness.
Common alkaline fungicides
A few fungicides are alkaline (pH>7), mainly including the following categories:
Copper preparations: such as Bordeaux mixture (copper sulfate + lime), copper hydroxide, cuprous oxide, etc., which are highly alkaline and are often used to prevent and control fruit tree and vegetable diseases.
Sulfur preparations: such as lime sulfur mixture (lime + sulfur), which has acaricidal and bactericidal effects, but should be avoided from mixing with acidic pesticides.
Others: such as rosin mixture (rosin + caustic soda), sodium pentachlorophenol (herbicide), etc.
BC-305 fungicide acidity and alkalinity
According to the search results, the pH value of BC-305 fungicide is 8.2~9.2, which belongs to the weakly alkaline range. The appearance is a colorless or slightly yellow transparent liquid with a density of 1.02~1.05[1.
Mixing precautions
Alkaline fungicides (such as Bordeaux mixture) cannot be mixed with acidic pesticides (such as organophosphorus), otherwise a chemical reaction will occur, resulting in reduced efficacy or ineffectiveness.
Although some agents (such as the acaricide Nisolan) can be mixed with alkaline substances, they must be used immediately after mixing.
