Best way to control thrips pests

Thrips , a pest that seriously threatens fruit trees and vegetables in China, are widely distributed in southern and northern regions of China. Their existence has caused considerable trouble to farmers, as their prevention and control are difficult. Once poorly managed, the infestation of thrips will lead to a significant drop in crop yields. Learn the best ways to control thrips pests below.

1. Causes

Improper cultivation environment treatment: Thrips pupae may hide in the soil or plant residues. If they are not thoroughly cleaned or pest-killed before sowing or planting, the pupae will hatch into adults when suitable conditions are met, increasing the risk of thrips occurrence.

Migration from outside: Thrips can migrate between different crops, especially when there are thrips near vegetable fields such as legumes, cucurbits , and solanaceae. They may migrate in by flying or jumping, causing cross-damage.

Improper prevention and control measures: Thrips have strong reproductive capacity in dry and warm environments, and their generations overlap. If the prevention and control are not timely or the wrong medicine is used, thrips may multiply rapidly and cause an outbreak.

2. Symptoms of Hazards

Thrips use their rasping and sucking mouthparts to damage the young and tender parts of plants, causing leaves to curl and shrink, internodes to shorten, or causing flowers, pods and fruits to fall, affecting the appearance and commercial quality of the fruit.

III. Prevention and Control Measures

Clean the fields: Thoroughly clean up plant residues after harvest and reduce the survival base of thrips through spraying or irrigation.

Hang blue sticky insect boards or suspend insect-attracting lights: Taking advantage of the thrips' tendency to be attracted to blue, use sticky insect boards or insect-attracting lights in greenhouses and open vegetable fields.

Film cultivation: Covering the ground with film can block the thrips pupae from entering the soil and reduce the damage to the plants after the adults emerge.

Smoke control: Use smoke to kill thrips in closed environments such as greenhouses. Pay attention to the dosage and frequency of use to avoid damage to crops.

Spraying of pesticides: Choose pesticides that are effective against thrips, spray them during the critical period of flowering, and pay attention to adding adjuvants to enhance the efficacy, and combine insecticides and ovicidal pesticides at the same time.

In summary, the prevention and control of thrips needs to be carried out in advance, especially in the initial flowering period of vegetables. The back of the leaves and the inflorescence should be closely observed, and a variety of prevention and control measures should be taken to achieve the goal of "prevention first, comprehensive prevention and control" to reduce the harm of thrips to crops.