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Active ingredients such as sulfur interfering with the fungus in question's ability to develop, reproduce and spread is the way in which fungicides work. The fungicide may be applied as contact, systemic or translaminar controls. Contact fungicides treat the outside only whereas systemic affects the life-sustaining xylem of nutrient-filled water whereas translaminar treatments move the active and inactive ingredients from the sprayed foliage to the unsprayed.

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9y ago

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