Leafminer moth
At present, many production areas have begun to release their shoots, coupled with the suitable temperature, increased rain, the branches are pumped fast, and the leafminer moth that likes the young shoots and has a strong obsession with "tenderness" will naturally not let go of this great opportunity, so the leafminer moth is coming again and again!
As one of the common pests in the shoot stage, the damage is serious from July to August, and the peak period of the whole year enters from August to September!
First, the characteristics of the hazard
1. Leafminer moths often moth into the skin of young leaves with larvae, forming a curved worm path, resulting in bending, hardening, shedding, etc., and in severe cases, it will also affect the yield of citrus in the same year;
2. The insect path of the leafminer moth can also provide a good wintering place for pest mites, shield mites, mealybugs and leaf curls, etc., and when the spring of the next year, there may be an outbreak of greater insect pests, endangering the entire orchard;
3. The large number of wounds caused by leafminer moths to crops can easily cause the occurrence of ulcer disease. In addition, leafminer moths can also lead to the aggravation of diseases such as sand skin disease and anthrax, especially easy to aggravate the spread and spread of ulcer disease.
Second, the law of occurrence
The life of the leafminer moth is very short, going through four stages of eggs, larvae, pupae and adult, which lasts about 20 days. Although the life is short, it can occur 9-15 generations a year, and the generation overlap is serious, almost worth the "ancestor eighteen generations" of the citrus red spider, and the loss to citrus is extremely large.
Citrus summer and autumn are both the peak period of leafminer moths, because the summer and autumn of young trees are slightly more eloped, especially suitable for leafminer moth adult egg laying and larval harm, so the harm is more serious than that of adult trees.
Leafminer moths are most suitable for reproduction at temperatures of 24-28 °C and relative humidity of about 80%, and the larvae begin to cause harm in mid-to-late April every year, and the most serious in June-October, because of the slightly large ejection in summer and autumn at this time.
3. Comprehensive prevention and control
1. Agricultural prevention and control
Combined with cultivation management, timely wiping of buds and control of shoots, removal of premature and late new shoots, and the neat and robust summer and autumn shoots through water and fertilizer management are the fundamental measures to inhibit the source of insects and control this insect.
2. Protect and release natural enemies
Tachibana moth wasp (the sworn enemy of citrus leafminer moth), grasshopper (grasshopper is very effective against red spiders and cotton bollworms), etc.
3. Pharmaceutical prevention and treatment
Timely spray protection. When a large number of autumn shoots germinate and the young shoots grow to about 1 cm, spray the drug immediately for protection! Spraying to control adults at night and spraying against larvae in the afternoon on sunny days. Pay attention to the coverage time of the agent and replenish the medicine in time. Spray every 5-7 days, 2-3 times in a row, to avoid being endangered due to the occurrence of a gap period. It is recommended to use [Kang Huan], which is both insect and egg killing and good effect. If ulcer disease is caused, it is recommended to use [Kejunbao + Arcadian]
【Ke Junbao】
1. The bactericidal spectrum is wide, which not only prevents bacterial diseases, but also prevents fungal diseases.
2. Good mixability and resistance to rain washing.
3. Long effectiveness and zinc supplementation.
【Kang Huan】
1. For Lepidoptera pests
2. Reduce the amount of drug used, delay pest resistance, strong effectiveness, more thorough insecticidalization, and more durable insecticide.
3. It has a good anti-effect on kale beet moth, especially suitable for pest strains that are resistant to other insecticides.
【Arcadian】
1. Promote the balanced and robust growth of various organs of crops, which has a two-way regulatory effect. Promote the root of the strong rod, resist lodging.
2. Enhance the vitality of crops, disease resistance, drought resistance, cold resistance and salt resistance.
3. Increase the chlorophyll content, make the leaves thicker, the leaf color is thick green, and improve the photosynthetic efficiency.
4. Alleviate drug damage, fertilizer damage, and avoid aphids, cattle, sheep, etc.
5. PH9-11 neutralizes soil acidity.
【Disclaimer】
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