At present, fruit trees are in dormant to germination stage, and some fruit tree pests have been or will be active. Among them, apple rot disease conidia has entered the peak period of transmission, and the disease spots will enter a period of rapid expansion. The Japanese ball nymph has moved short distances. With the germination of fruit buds, the pathogen of apple powdery mildew began to infect, and the larvae of the apple leafroller and the leaf-rolling moth were successively attacked. The eggs of the meadows were hatched, and the females of the hawthorns were germinated after the flower buds sprouted. It’s awkward. In order to reduce the number of pests and diseases and reduce the pressure of prevention and control in the later period, all counties must grasp the strong resistance of fruit trees. At present, the resistance of pests and diseases is weak, the places of occurrence are concentrated, and the opportunities for drug control are easy to be implemented. Fruit tree pest control work.
I. Agricultural Measures Linyi Fertilizer Network Copyright
Clean up the fallen leaves, scrape the rough old skin, and burn it or bury it deeply. Sweeping the leaves can reduce the brown spot and leaf spot of the apple and the source of the golden moth. The pruning can reduce the bacterial sources such as powdery mildew, ring disease, anthracnose, and Japanese ball python, spirea, etc. The source of insects; scraping off the old and old skin, can reduce the source of apple rot and the source of the locust. Linyi Fertilizer Network Copyright
Second, chemical measures Linyi Fertilizer Network Copyright
1. Spray on the tree Linyi Fertilizer Network
When the apple tree big leaf buds are green, the whole garden is sprayed with 3-5 wave of sulphur stone sulphide or 45% stone sulphur crystals 40-60 times liquid, or mixed with insecticide and bactericide, 48% chlorpyrifos can be selected. Emulsified oil 1000 times liquid + 50% carbendazim WP 600 times the whole garden spray. Linyi Fertilizer Network Copyright
2, scraping and curing rot disease Linyi Fertilizer Network Copyright
After the lesion is found, it should be scraped off immediately, then apply 1.8% octosamine acetate saline 10 times solution or 3% methyl thiophanate paste original paste, and finally wrap it with yellow mud and plastic film to facilitate wound healing. Linyi Fertilizer Network Copyright
The county with conditions can choose to spray 20% syringyl ester suspension before the germination of the fruit tree or apply the Phytophthora infestans in May to test and control the apple rot disease. Linyi Fertilizer Network Copyright
3, eradicate apple rust fungus source Linyi fertilizer network copyright
In the orchard where apple rust was re-emerged last year, if there were cypress trees, the teliospores on the cypress near the orchard should be cleaned, and 15% triazolone WP 2000 times should be sprayed or sprayed with 3-5 wave of sulphur mixture. Linyi Fertilizer Network Copyright
Third, pay attention to Linyi Fertilizer Network Copyright
1. It is very important to grasp the appropriate period in the spring clearing garden. It will not achieve the desired effect in the early days, and it is easy to cause phytotoxicity in the evening. Linyi Fertilizer Network Copyright
2, stone sulfur mixture is an alkaline pesticide, mixed with mancozeb, carbendazim, chlorbenzuron and pyrethroid pesticides will reduce the efficacy. Linyi Fertilizer Network Copyright
3, stone sulphur mixture should be used now, after preparation for a long time no need to reduce the efficacy, and sensitive to sulfur, with stone sulphur mixture in peach, plum, apricot, grape, pear and other orchard Qingyuan susceptible to phytotoxicity Should be used with caution or hanged. Linyi Fertilizer Network Copyright
4, the long-term use of stone sulfur mixture will make the disease and insect resistance, but also choose insecticide and fungicide mixed spray control. Linyi Fertilizer Network Copyright
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