Author:Long Xiao Orange Lamp Crop Technology (xjdzwkj)
Citrus leafminer moth, some local farmers called "ghost painting symbol". It is a lepidoptera pest. It can occur about 10 generations a year, with pupae and larvae overwintering on the affected leaves. Occurs severely from July to September.
1
Harmful symptoms
The damaged blades curl back
The latent leaves of the larvae are harmful to the young leaves of the young shoots, creating winding tunnels
Blade positive hazards
Leaf back hazard
When the larvae mature, mostly moth to the leaf margin
Most of the leaves of the new shoots are endangered
Induces the occurrence of ulcer disease
Grapefruit leaf hazards
2
Leafminer moth morphology: larvae - pupae - adult - egg (none)
Regularity of occurrence
1. Generations overlap, mostly pupae overwintering in autumn and winter leaf margins.
2. If the peak period of leafminer moth occurrence coincides with the large number of citrus summer and autumn shoots, the harm is often serious.
3. The wounds of larval harm are also conducive to the invasion of diseases and insect pests such as ulcer disease and mites.
Experts recommend solutions
1. Remove uneven shoots that are prematurely or late to reduce the source of insects. Timely release, unified release;
2. The peak period of adult insects and young larvae is the appropriate period for drug control, and the general insect leaf rate is more than 5% spraying. If the rainy season is heavy, chlorhexabenzamide can be selected, and the effective period is more than 15 days. Other agents avermectin, chloryanide chlorpyrifos, chlorpyrifos, chlorpyrifos, insect mite nitrile, chlorpyrifospyrifos, etc. in about 7-10 days, combined with pyllid agents, rotation of medication;