What are the control methods for the tobacco pear psyllid?
How to control the tobacco pear psyllid? The occurrence characteristics of the pear psyllid are many generations. The adult emergence period is long and generations overlap. Especially from late June to early July, the nymphs secrete a large amount of mucus, causing a large number of fallen leaves, which not only seriously affects tree vigor, but also reduces pear fruit quality, and it is difficult to control with general pesticides. Use tob...
How to control the tobacco pear psyllid?
The occurrence characteristics of the pear psyllid are many generations. The adult emergence period is long and generations overlap. Especially in late June
to early July, the nymphs secrete a large amount of mucus, causing a large number of fallen leaves, which not only seriously affects tree vigor, but also reduces pear fruit quality, and it is difficult to control with general pesticides. Using the tobacco lime water method, the effect can reach more than 95%.
1. Preparation of tobacco lime water: 1 kg of tobacco, 1 kg of quicklime, 30 kg of water. First use 10
kg of boiling water to soak the tobacco leaves in a basin and cover it. When the water temperature is no longer too hot to touch, rub the tobacco leaves vigorously, then remove the tobacco leaves and put them in another 10 kg of clean water to continue rubbing. Then pour the leaf water solutions from the two rubbings together. Separately, take 1 kg of quicklime and add 10 kg of water to make lime milk, filter it through coarse cloth to remove residue. Before spraying, mix the tobacco leaf water solution and the lime milk together, stir evenly, and it becomes the tobacco lime water solution.
2. Method of use: Use the tobacco lime water solution for spraying. When using, add 0.3% soap for a higher insecticidal effect.
3. Precautions: 1. The main insecticidal component of tobacco lime water is nicotine, which is volatile, so the prepared tobacco lime water should not be stored for a long time. 2. Lime milk and soap should be added just before use to avoid reducing the efficacy. 3. Nicotine is quite toxic to humans, so care should be taken for safety when rubbing and preparing tobacco water to prevent poisoning.
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