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How to prevent and control leaf blight in Schisandra chinensis? Practical tips shared
Leaf blight in Schisandra chinensis mostly occurs from late May to mid-July, with the lesions appearing scorched yellow. It initially starts at the leaf tip and gradually expands and spreads; in severe cases, the entire leaf turns yellow and dies. The disease is severe under high temperature and high humidity with poor ventilation. Control methods: spray with 400-500 times zineb and 1500 times thiophanate-methyl; it is best to spray once a week before the disease occurs, for 2-3 consecutive sprays, or use Bordeaux mixture sprayed once a day.