1 thought on “What are the main pests of African chrysanthemum?”
Shelley
The pests of African chrysanthemums mainly include ovate shorts Mittage, greenhouse puerants, human patterns, fascinating moths, firous threads, etc. The ovate shorts and the greenhouse are more harmful. 1. The oval short mites (1) The characteristics of the harm The adult insects are mostly harmed on the back of the leaf. Oil -stained purple -brown plaques produced by the leaf back. After the petiole was injured, it turned purple -brown and fell off early. (2) Control method The flower field planting density, ventilation and light transmission, increased phosphorus, potassium fertilizer, and enhance the anti -disease power. Discover mites, remove timely, concentrate burning, and reduce the source of communication. During the onset, a 73%gram mite special 3000 times or 10%liquorin 1000 times liquid and 0.9%Avin 3000 times solution. 2. The medium (1) The characteristics of the harm A larvae cluster gathered in the leaf back to suck the juice. Black, dying off. (2) Prevention and control method It strengthening flower field management, removing weeds and diseased leaves, and protecting natural enemies, such as parasitic bees. When the larvae are 1-2 years old, spray 25%lice 1000 times liquid, and can also spray 1500 times liquid to kill 螟 pine.
The pests of African chrysanthemums mainly include ovate shorts
Mittage, greenhouse puerants, human patterns, fascinating moths, firous threads, etc. The ovate shorts and the greenhouse are more harmful.
1. The oval short mites
(1) The characteristics of the harm
The adult insects are mostly harmed on the back of the leaf. Oil -stained purple -brown plaques produced by the leaf back. After the petiole was injured, it turned purple -brown and fell off early.
(2) Control method
The flower field planting density, ventilation and light transmission, increased phosphorus, potassium fertilizer, and enhance the anti -disease power. Discover mites, remove timely, concentrate burning, and reduce the source of communication. During the onset, a 73%gram mite special 3000 times or 10%liquorin 1000 times liquid and 0.9%Avin 3000 times solution.
2. The medium
(1) The characteristics of the harm
A larvae cluster gathered in the leaf back to suck the juice. Black, dying off.
(2) Prevention and control method
It strengthening flower field management, removing weeds and diseased leaves, and protecting natural enemies, such as parasitic bees. When the larvae are 1-2 years old, spray 25%lice 1000 times liquid, and can also spray 1500 times liquid to kill 螟 pine.