How to control aphids on Sichuan pepper trees with good results

Sichuan pepper is an indispensable seasoning in our daily life, and its price is not cheap, mainly related to its relatively low yield. If aphid damage occurs during Sichuan pepper cultivation, its yield will be even lower. Aphids are the most difficult pest to control among the diseases and insect pests of Sichuan pepper. They live by sucking sap, and in severe cases cause leaves to curl, and they also secrete a sticky substance that leads to disease, dealing a devastating blow to Sichuan pepper production. So how should Sichuan pepper be protected against aphids? Come and take a look with the editor.

1. Reasons why Sichuan pepper is difficult to protect

First, aphids are extremely widely distributed, occurring on almost all plants, and they migrate as their living conditions change, which is also the reason aphids spread everywhere. Aphids have very good natural enemies, but with the widespread use of insecticides, many natural enemies have basically disappeared, which has led to their becoming more and more serious. And with the abuse of pesticides, many aphids have basically developed resistance, so it is impossible to wipe them out in one stroke with pesticides. Their reproductive capacity is extremely strong, and often several generations can cause damage at the same time.

2. Focus on prevention

Aphids have strong reproductive capacity and resistance to many pesticides, so control should focus on prevention. Before budding, lime sulfur mixture can be used for orchard cleaning work, and after budding, pesticides can be sprayed for a second orchard cleaning, generally using nicotinoid pesticides such as imidacloprid and thiamethoxam. Other spraying prevention times are generally at the flower bud stage, young fruit stage and fruit expansion stage, among which prevention at the flower bud stage is extremely critical. If the aphid population base is not controlled well in the early stage, then in the later stage the aphids will be wrapped in sticky substance, and the control effect will be poor.

3. Natural enemy control

The main natural enemies of aphids are the seven-spot ladybird and hoverflies. When planting Sichuan pepper, we can intercrop certain crops to use them to attract seven-spot ladybirds and hoverflies. Of course, we can also artificially release seven-spot ladybirds for control. During the growth period of Sichuan pepper, try to avoid using broad-spectrum insecticides multiple times, such as pyrethroid pesticides and organophosphorus pesticides, as these will cause the death of seven-spot ladybirds. We can also take advantage of the yellow tropism of aphids and use physical methods such as yellow sticky traps to trap Sichuan pepper aphids.

4. Pesticide application

During the key period of aphid control, when using pesticides, pay attention to combining fast-acting and systemic pesticides, and also add penetrants such as organosilicon to increase the application effect. For plants with a relatively large aphid population base, it is advisable to spray pesticides until water drips from the leaves.

  The above is an introduction to how Sichuan pepper should be protected against aphids. I hope it can help you. If you want to learn more related knowledge, please stay tuned to us.