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Two kinds of pest control of Schisandra
(1) Leaf blight typically starts at the tip or edge of the leaf and gradually spreads across the entire surface, leading to yellowing, premature defoliation, and in severe cases, ear shedding. This disease can significantly reduce yield and affect plant health. To manage it effectively, proper field management is essential, including ensuring good air circulation and light penetration. As soon as symptoms are detected, apply a 1:1:100 Bordeaux mixture every 7 days for several consecutive applications. Regular monitoring and timely intervention are crucial to prevent further spread.
(2) Roller leaf larvae are a common pest that causes leaves to roll, which hinders normal growth and can even lead to fruit drop. These pests feed on the leaves, reducing photosynthesis and overall plant vigor. To control them, spray the affected areas with one of the following insecticides: 50% phoxim diluted 1,500 times, 50% phosphoamine diluted 1,500 times, 40% dimethoate diluted 1,000 times, or 80% trichlorfon diluted 1,500 times. It's important to follow the recommended application rates and intervals for optimal results. Always wear protective gear when handling pesticides and avoid spraying on windy days to prevent drift.