How to control sweet-scented osmanthus whitefly
The adult and larval needles are inserted from the back of the leaves to absorb the leaf juice of flowers. Make the leaves withered and yellow and fall off, adults can secrete "honeydew", nourish coal fouling bacteria, lead to soot disease, pollute leaves and branches, destroy photosynthesis and respiration, make flowers grow badly, cause leaves withered and yellow, tree potential weak or the whole plant dead. Prevention and control methods: it is forbidden to carry insect seedlings and clean the field. Protect natural enemies, prickly black wasps and ladybugs, Chinese lacewings, aphid wasps, yellow jumping wasps. Spray 2.5% of the enemy at the peak of egg incubation to kill EC 5000 times against water, spraying 2-3 times in a row. Trapping and killing: adults have a strong tendency to yellow, can be inserted in the edge of the tree or hang yellow wood, plastic board, coated with oil, vibrating flower branches, make it fly to the branches, kill. Potted flowers move indoors in winter, strictly check the back of the leaves, and it is forbidden to enter the room on behalf of worms. Click to get more sweet-scented osmanthus planting techniques
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honeysuckle seedling raise method
1, cutting seedlings honeysuckle cutting seedlings in spring, summer, autumn can be carried out, autumn is suitable in early September to mid-October. Nursery land should be selected flat, deep soil, irrigation and drainage convenient sandy loam or loam land. 3~5 cubic meters of decomposed organic fertilizer, calcium superphosphate or calcium phosphate are applied per mu before seedling raising.
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How to control scented osmanthus scale insects
Often adults and larvae live on sweet-scented osmanthus branches to absorb juice, resulting in branches and leaves withering, serious death of the whole plant, often secreting a large number of honeydew, leading to the occurrence of soot bacteria. The leaves and stems are covered with black dirt stickiness, which hinders the light and function and affects the ornamental. There are mainly cotton blowing scale and mulberry white scale. Prevention and control method: it is strictly forbidden to use the vaccine of the substitute worm.
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