Lime SulphurPlant Protection Product ComparisonPlant Protection Product ComparisonReport inaccuraciesReport inaccuracies

Active Ingredient: Calcium polysulphides (equivalent to 22.5% sulphur)

Uses: Lime Sulphur is a broad-spectrum fungicide and insecticide used to control various diseases, insects, and mites on a wide range of crops, including:

• Fruits: Citrus, pome fruits (apples, pears), stone fruits (peaches, plums), grapes

• Vegetables: Tomatoes, potatoes, cucurbits (melons, cucumbers)

• Ornamentals: Roses, flowering shrubs, trees

• Other: Nuts, berries

Mode of Action: Lime Sulphur works by multiple mechanisms:

• Fungicidal: It disrupts fungal cell membranes and inhibits spore germination.

• Insecticidal: It suffocates insects and mites by blocking their respiratory spiracles.

• Acaricidal: It kills mites by contact.

Benefits:

• Broad-spectrum control: Effective against a wide range of diseases, insects, and mites.

• Cost-effective: Relatively inexpensive compared to other fungicides and insecticides.

• Organic option: Approved for use in organic production systems.

• Dormant application: Can be used during dormancy for preventative control of some diseases.

Drawbacks:

• Strong odor: Has a pungent, unpleasant smell.

• Phytotoxicity: Can damage plant foliage and fruit if not applied correctly.

• Environmental concerns: Can be harmful to beneficial insects and aquatic life.

• Safety concerns: Corrosive and irritating to skin and eyes.

Important Considerations:

• Always read and follow the label instructions carefully before using Lime Sulphur.

• Apply only when necessary and at the recommended rates and timings.

• Wear appropriate personal protective equipment (PPE) during mixing and application.

• Do not mix with other pesticides unless specifically recommended by the manufacturer.

• Be aware of the potential for phytotoxicity and environmental risks.

Alternatives:

• Copper fungicides: Less broad-spectrum but generally safer for plants and the environment.

• Insecticidal soaps: Effective against soft-bodied insects and mites but have limited residual activity.

• Biological control agents: Can be used in conjunction with or instead of chemical controls.

Disclaimer: I am not a professional horticulturalist and this information is not intended as a substitute for professional advice. Always consult with a qualified expert before using any pesticide, including Lime Sulphur.