Economic thresholds generally do not exist for plant pathogens and nematodes in Idaho field and row crops.  The following table instead lists pesticide application timing recommendations for disease and nematode management.

Mint

Pathogen		Pesticide	Timing
	Powdery mildew (Erysiphe cichoracearum)	Wettable or flowable sulfur	Apply wettable or flowable sulfur when plants are 5 to 6 inches tall or when the fungus first appears.

    References:  Pacific Northwest Disease Control Handbook, 2000.

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