Symptom Identification and Control Methods for Licorice Gray Leaf Spot

Medicinal Herb Cultivation Jan 1, 1970 0 views

It damages the leaves, forming nearly round brown lesions with gray centers. Control methods: (1) Clear the garden in winter and dispose of plant debris. (2) During the disease period, spray 1:1:120 Bordeaux mixture or 70% thiophanate-methyl wettable powder at 1500-2000 times dilution.

It damages the leaves, forming nearly round brown lesions with gray centers.

Control methods: (1) Clear the garden in winter and dispose of plant debris. (2) During the disease period, spray 1:1:120 Bordeaux mixture or 70% thiophanate-methyl wettable powder at 1500-2000 times dilution.

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Symptom Identification and Control Methods for Licorice Gray Leaf Spot

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