Common diseases and insect pests of Narcissus include melasma, putrefaction, nematodiasis, Narcissus fly, acanthopoda, etc.:
It is better to spray once every 1-2 weeks to kill the disease from March to May. 75% chlorothalonil 700 times solution should be used when spraying. It is necessary to immerse the seed ball in water for about 1 hour, and then soak it in tribute water for about 30 minutes before sowing.
These two diseases are one of the most important diseases of Narcissus. After the plant is infected with the disease, it looks like the bulb is intact on the surface, but the inside of the plant has been damaged or rotted. The rotted part of the disease should be removed in time. The protective agents on the drawing need to detoxify the soil in time to prevent the rotten disease and nematode disease.
The color of the mite is white and bright, which reminds that it is similar to adult mite. The color of the mite is light and the ketone body is white. It can be sprayed with 40% dicofol 1000 times solution.
Narcissus flies lay their eggs in the soil, and the hatched larvae invade the sphere, causing the bulb to rot and turn black. To deal with Narcissus flies, we need to use carbon disulfide. We need to water Narcissus flowers in the growing period.
