Zhang Guanghua
1. Aphids
Aphid control commonly used agents: at the beginning of the disease, spray with 3% acetamiprid 1000 times liquid or 10% flufenadineamide (longshi) 3000 times liquid or 25% pyrithodone 1500 times liquid or 19% cyanopyramide (verema) 1500 times + 1000 times gelatin point; alternately, once every 7-8 days.
2. Whiteflies
Commonly used agents for the prevention and treatment of whiteflies:
1. Choose different insecticides with different mechanisms of action
For example, nicotinoid insecticides such as imidacloprid, acetamiprid, alenophexamine and pyridinamide fluorinamide, or pyridinyl pyridone. It can also be used for alternating drug control with formulas such as ethyl polybactericide + acetamiprid, ethyl spironoid + imidacloprid, bifenthrin + thiamethoxine, and the effect is not bad.
2, to adult insects and nymphs at the same time to control
It is recommended that the above insecticides be used in combination with ethyl spironoids or pyritrazine, and adult nymphs are controlled at the same time.
At the same time, in the case of severe resistance to pests, it is not necessary to try mineral oil, and the test shows that some mineral oils have a high activity against whiteflies.
3. Ticks
Commonly used agents for the control of insect shell insects: (1) In the early stage, pyrethroids, highly toxic organophosphorus pesticides, and acaricides containing diesel engine oil are not used to ensure that natural enemies such as ladybirds have time to reproduce. (2) Do not eradicate weeds in the garden, so that natural enemies have a breeding ground. (3) Pay attention to observation, grasp the time law of the occurrence of insect shell insects in the field, and concentrate on spray control during the reptile stage. The selected agents are 52.25% Agrole Emulsion 800 times liquid + 10% imidacloprid wettable powder 1000 times liquid, 3% acetamidine emulsion 1500 times liquid + 48% chlorpyrifos emulsion 1000 times liquid, 25% quick-killing anti-emulsion 1000 times liquid + 5% efficient Hero wettable powder 1000 times liquid. Spray every 5-7 days for a total of 2-3 sprays.
4. Tsubaki Elephant
Tsubaki commonly used in the control of elephants: seize two key periods of spraying, one is the spring recovery activities of overwintering adults (mid and late March), and the first spray is carried out when the overwintering adults have poor drug resistance and have not yet laid a large number of eggs. Second, before the 3rd instar (in mid-to-late April), the resistance of overwintering adults drops to the lowest point, and the newly hatched nymphs are sprayed for the second time when the resistance of the nymphs is poor. The agent can choose a mixture of tactile, endorbent and strong fumigation, such as 5% fipronil 1500-2000 times liquid, 20% imidacloprid 4000 times liquid, 2.5% high efficiency cypermethrin 2500 times liquid and other sprays, spraying time to choose before 10 am after 4 pm, the evening effect is better, but the temperature is not too low, otherwise it will affect the efficacy. Since Tsubaki is like lurking on the weeds under the tree and the inter-row crops during the day, and the tree is harmful at night, the spraying should focus on spraying the trunk, underground weeds and inter-row crops, so that the tree and under the tree are sprayed strictly and sprayed to achieve the purpose of eradication.
5. Leafhoppers
Commonly used agents for the control of leafhoppers: 3% acetamidine emulsion 1000-2000 times liquid, 0.3% neem emulsion 600 times liquid or 7.5% rotenone emulsion 500 times liquid or 20% infuran 4000 times liquid or 25% bifenum 1500-2000 times liquid, etc., the above pesticides can be selected before the peak period of leafhoppers, if the worms account for 80%, can receive better results.
6. Leaf mites
Commonly used agents for the prevention and control of leaf mites: 1.8% avermectin emulsion 2000-3000 times liquid, or 75% alkyne mite emulsion 1000 times liquid, or 3.3% avi bifenthrin emulsion 1000-1500 times liquid, or 20% compound mycin emulsion 1000 times liquid, or 10% Liuyangmycin 1000-1500 times liquid, or 20% methotrexate emulsion 1000-1500 times liquid, Or 43% biphenylhydrazine ester 3000 times liquid + 5% thiazorone (nissolan) 2000 times liquid + Jiamei point 1000 times liquid or 20% butorobenzate 2000 times liquid + 30% ethazole acetonitrile (Bao zhuo) 2500 times liquid + Jia Mei dian 1000 times liquid, the above agents pay attention to alternate use.
Suction mouthpiece pests cause harm by directly sucking plant sap and are generally less mobile. In the prevention and treatment of pharmaceuticals, attention should be paid to:
1. It is best to choose an insecticide with internal absorption conduction activity. Such as imidacloprid, acetamiprid and the like.
2. For insect pests covered with waxy shells, nymphs should be selected to control when the nymphs hatch recently and have not yet formed a waxy shell. If a shell has been formed, a agent with strong permeability should be selected, or the ability to penetrate the shell should be increased by adding laundry detergent to the agent.
3. Pay attention to the mixing and rotation of insecticides between different mechanisms of action to avoid the rapid resistance of sucking mouthpiece pests.
4. Pay attention to appropriately increasing the amount of liquid medicine (water volume) and strive to apply the drug evenly.
This article was originally produced by cathay Pacific Jiamei technical team
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Article Source: Tianbao Agricultural Technology Service Platform (ID: tianbaonj)
Editors of this issue: Zhou Haiming, Wang Yunting