|1 Crop Production|
|1.2 Crop Production Aids|
|1.2.7 Plant Disease Control|
|126.96.36.199 Sulphur Products (CGSB Restricted)|
|Sulphur is an effective organic fungicide. Fungi absorb the sulphur, which then disrupts electron transfer. This results in the sulphur being converted to hydrogen sulfide - which is toxic. Sulphur also forms a protective layer that inhibits spore germination. The use of sulphur as a fungicide is restricted to foliar applications.
Sulphur applications delayed significantly after the onset of disease symptoms are less effective. Sulphur has been effective in controlling apple and pear scab, powdery mildew, rust mites, brown rot, grape erineum mite, leaf spot, cane spot, cane blight and rust blight.
Sulphur can cause severe damage to plants, especially in hot weather. Tomatoes, grape, cranberry and melons producers should be particularly cautious. Do not apply within 30 days of an oil application.
Adding lime to sulphur enhances its fungicidal properties. Lime causes a chemical change that permits the sulphur to penetrate the leaf tissue. Diseases such as brown rot, leaf spot, mildew, and both apple and pear scab have been controlled by the use of lime sulphur. The use of lime sulphur is restricted and certification bodies may require a leaf tissue analysis prior to authorizing its use.
Lime sulphur is primarily used as a dormant spray to clean up overwintering insects, mites and fungal diseases on fruit trees and small fruit. Do not spray when foliage is wet. Lime sulphur may cause leaf yellowing and defoliation.
|Products||Sources||PMRA||PCP#||OMRI||Origin||Lime Sulphur 22%||United Agri Products||R||16465||Kumulus DF||BASF Canada||R||18836||Sulphur DF||Wilbur Ellis||R||23171||Bartlett Wettable Sulphur||N. M. Bartlett Inc.||Y||873||Wilson Professional Lime Sulphur 23%||Nu-Gro Corporation||Y||25356|