There are no insects in the shed, why is the virus raging?
Release time：2024-04-11 page views： Font size：big In the small
Recently, Shaanxi reader Master Liu called to report that the tomatoes in his shed were yellow, looking like a virus disease, and the transmission speed was fast. I don't know what the situation is. After careful observation, it was found that the top leaves of the tomatoes became smaller, wrinkled, yellow-green mottled, the edges were rolled up or down, and the plants were dwarfed. He suspected that the tomatoes were infected with the virus disease.
What exactly caused the emergence of the virus disease? After communication, it was learned that Master Liu paid great attention to the prevention of pests on a daily basis, and no traces of infectious pests were found in the shed, which could rule out the possibility of pest transmission. However, in addition to the transmission of viruses, the transmission of sap is also a very important aspect. It turns out that in the daily pruning and branching process, the plants that have been infected are not avoided, but managed uniformly. In this way, the reason why Master Liu's tomatoes spread so fast is because of the human-caused spread of juice during pruning and branching.
Master Liu's experience also reminded the majority of vegetable farmers: there are many ways of virus transmission, not only limited to insect transmission. Mutual infection caused by pruning and branching is also an important aspect of virus transmission. It is recommended to pay attention to the following points in management:
First of all, in daily management, it is necessary to do a good job in the prevention and control of poisonous insects. As the temperature rises, insect prevention nets should be installed in time. It is recommended to choose 80~ 100 encrypted insect prevention nets.
Secondly, two points should be paid attention to when pruning and branching: one is to classify and manage the diseased and healthy strains. During the management, the healthy strains can be operated first, and then the diseased strains can be operated to avoid mutual infection; the second is to unify the management, and the hands or tools should be disinfected in time. Carry soapy water or disinfectant with you, and disinfect a plant after the operation is completed.
Again, take the pruned branches out of the shed in time and destroy them. Do not throw them on the ground for a long time without treatment.
Finally, in response to the situation of viral diseases in the shed, it is recommended that Master Liu quickly spray the whole shed with anti-virus agents, such as Hei Kui virus antibodies, three times in a row to achieve effective control of the virus. (Ma Yonglu)