Aphid is a plant eating insect. At present, there are many kinds of aphids, ranging in size from 1 to 10 mm. Aphids are mainly concentrated in temperate areas. The flowering period of Jasminum nudiflorum is from February to April. After flowering, it is the high incidence period of aphids. Unless encountering heavy rain or extreme temperature rise, the aphids will climb all over the branches and seriously affect the growth of Jasminum nudiflorum.
Aphids are mainly divided into seedling aphids and ear aphids. We should adhere to the principle of "selecting and controlling seedling aphids and ear aphids".
The natural enemies of aphids are ladybug, aphid eating fly, parasitic bee, aphid eating gall midge, crab spider and Chrysopidae, which can be used to treat aphids by manual capture. Most of the Jasminum flowers in families are potted plants, which are mostly used for large-scale garden planting. However, when the potted plants are maintained outdoors, the natural contact of aphids will reduce the incidence of aphids.
Once pests are found, they should be treated immediately. When there are few pests, they can be directly scraped off with bamboo chips.
In case of high incidence of aphids, spray the emulsifiable oil of aphid whey or aphid loujing to kill. Pay attention to use different chemicals to control the aphids every year. The aphids have strong resistance to insecticides. If you use one agent for a long time, the aphids will produce antibodies.
The moth is mainly found in Hubei, Jiangxi, Fujian, Zhejiang, Jiangsu, Anhui, Tianjin, Taiwan and other places. The larva will parasitize on the plant and eat the leaves, peel off the branches, causing local branches to be bare. The big coir moth likes to live in groups, which is harmful.
Check potted plants frequently, remove and destroy insect sacs in time.
It is found that there are parasitic bees around, so they should be protected.
Spray 50% phoxim emulsifiable concentrate 1000 times.
It is recommended to prevent and control the disease in advance and spray insecticide or cyanobacteria for biological control.
