Which insect pests need to be controlled in aloe culture?

Which insect pests need to be controlled in aloe culture? Please introduce and guide the control methods of aloe vera pests are red spiders, aphids, cotton bollworm, shell insects. These pests mainly harm the seedlings or tender leaves of aloe, and the occurrence quantity is small. First, red spiders and aphids: red spiders and aphids generally occur in spring, summer and autumn; when the number of insects is small, they can be washed with clean water or pinched to death with hands; they can also be sprayed with 2000 times of dimethoate, once every 3-4 days, and can be injected several times in a row. Helicoverpa armigera: Helicoverpa armigera is the most dangerous pest in aloe culture, causing serious harm. Helicoverpa armigera mainly bites young leaves and flowers, resulting in incomplete leaves and falling flowers; generally serious damage in July to September; when the larvae are mature, they are spun and drooped, buried in the soil to make cocoons and pupae, with a depth of 2.5 cm and 6 cm. It usually takes 35 to 45 days to complete a generation. Cotton bollworm control methods: 1, use black light or poplar forest to trap and kill adults. 2. Do a good job in the unity and coordination of other plants (such as cotton and corn) around the planting area. 3. Chemical control: spray control with 1000 times of 50% fenitrothion EC or 2000 times of 50% phoxim EC during the larval initial egg stage. 3. Scale insects: scale insects often stick to the back of the leaves as larvae, sometimes on the front of the leaves. When the larvae choose their habitat, they begin to lie still and form adults, and suck the leaf juice in one place for a long time. At the same time, a large amount of honey is discharged to pollute the leaves, resulting in soot disease. Because adults are crusts outside and are not easily touched by chemicals, there are fewer damaged leaves, so they can be crushed to death by manual killing. Or when it is serious, you can use 80% dichlorvos EC 800 times liquid, with a brush dipped in the liquid on the shell insects, it should be noted that the last use of the drug should not be less than 5 days from the harvest interval. Click to get more aloe culture techniques click to get more flower planting techniques