The Latest Control Methods for Common Pests and Diseases of Sichuan Pepper

When it comes to diseases of Sichuan pepper, they occur frequently during the growing process. The occurrence of diseases affects the quality and yield of Sichuan pepper, and some also affect tree vigor, leading to poor growth. So what diseases commonly occur and cause damage on Sichuan pepper trees, and what small insects harm Sichuan pepper? Today this article will list and introduce them to help everyone understand these pests and diseases and know how to prevent and control them.

1. Gummosis

Sichuan pepper gummosis, generally also called dry rot, is most commonly caused by improper management, which leads to weakened tree vigor and the occurrence of gummosis, and in severe cases death. Next is fungal infection causing disease; after infection, the bark cracks and bacterial pus flows out. Or it may be mechanical injury, with insects gnawing wounds, causing nutrients to flow out, resembling gummosis. With careful management, fertilization and water supply are indispensable, and the soil must be loose and breathable; use biological bacterial fertilizer, so that good growth vigor can be maintained and resistance to pathogen damage strengthened. Using fungicides together with insecticides gives better results.

2. Root rot

Root rot is a major disease of Sichuan pepper. When it occurs, the root system rots, becomes foul-smelling, the phloem separates, and the xylem turns black. Generally, pruning is needed for ventilation and humidity reduction, or planting should be sparser; when raising seedlings, disinfect the soil with a 15% triadimefon 800-fold solution; when transplanting, soak the roots in a 50% thiophanate-methyl 500-fold solution, generally soaking the roots for one day; when the disease occurs, first clean away the rotten roots, dig out and burn the dead roots, then use a 15% triadimefon 300-fold solution for root irrigation treatment, and spread lime on the nearby soil for disinfection;

3. Scale insects

Mainly a group of larvae cluster and attach to branches and trunks, sucking tree sap and transmitting viral diseases, which can cause the tree to dry up. You can first use a brush to brush off and kill the insects; if there are too many, you can use a 40% omethoate 1000-fold solution to spray and kill the larvae with good results. Use lime sulfur mixture to kill adults.

4. Flea beetles

Flea beetles are good at jumping and can cause damage everywhere. They mainly gnaw leaves and tender twigs, causing fruit drop and reduced yield. It is best to use a fenitrothion 2000-fold solution to poison and kill emerging adults before new shoots sprout, so as to control them at the source; in summer when larvae are abundant, use an 800-fold phosphamidon emulsifiable concentrate to spray the crown of egg-laying trees to reduce the insect population.

5. Longhorn beetles

Longhorn beetles are good at boring into trunks and causing damage. They have strong gnawing ability and will bore holes in the trunk, boring tunnels and feeding between the phloem and xylem. Large amounts of wood shavings and excrement are commonly seen at the holes. Their damage is severe, so drugs must be injected directly to poison and kill them. Adults should be poisoned and killed by spraying a 1000-fold dimethoate solution. Adults must be poisoned and killed before egg laying.

Sichuan pepper can suffer from many diseases. Today we have selected a few common pests and diseases with severe damage to give a brief introduction, to help everyone understand them and effectively prevent the occurrence of these pests and diseases.