How do you formulate Cheshunt compound a fungicide.?

Answer 1

According to the Royal Horticultural Society, it is a mixture of ammonium carbonate and copper sulphate.

I think the relative proportions are probably a trade secret, but since most fungicide control compounds include copper sulphate and one other ingredient, you can likely assume that the copper sulphate is the most important part. Thus a weak mixture of copper sulphate would likely work OK as a replacement.

Bordeaux mixture uses copper sulphate and hydrated lime. Hydrated lime (calcium carbonate) is a kinder and more easily sourced ingredient than ammonium sulphate so I would try that before Cheshunt compound.

Copper sulphate can be sourced from equestrian supply shops because it is used as a foot bath for horses (again for its antifungal properties).

Be careful using it - it is poisonous to fish so NEVER put it down the drain or on land near a river.... so only mix up what you need and keep it away from children.

Answer 2

Cheshunt compound is a fungicide that can be made by mixing equal parts of copper sulfate and ammonium carbonate in water. The solution is then added to a sprayer and applied to plants to control fungal infections. It is important to follow proper safety precautions when handling and applying this mixture.