The Bureau carries out biological control of korean pine cones pests

From June 12 to 13, the Bureau carried out biological control of Korean pine cones pests at the Korean Pine Seed Garden, using the parasitic natural enemy studied by the Provincial Academy of Forestry, the Korean Pine Borer Wasp. After two days of hard work, the staff released a total of 6,000 tubes of bees.

In recent years, the Consort cones of The Korean Pine Seed Garden, the Korean Pine Mother Forest and some Korean Pine Plantations under the jurisdiction of our bureau are susceptible to the harm of Consille pests in the growth process, and their larval and pupa stages live in the branches and cones of Korean pine, which are highly concealed and difficult to control, which greatly reduces the yield and quality of Korean pine seeds. The Korean pine borer is a parasitic natural enemy studied and bred by the Provincial Academy of Forestry Sciences, mainly parasitizing in the old mature larvae and pupa of the fruit borer and fir borer, the parasitic pupae cannot feather and lay eggs, which has a good control effect on the pupa stage of the bulbous fruit pest, and is a set of pollution-free biological control strategies for the prevention and control of red pine cones pests.

The staff of the forest defense station put small bees

As one of the implementing units of the project "Demonstration and Promotion of Biological Control Technology for Korean Pine Cones Pests", Linjiang Bureau is responsible for the promotion of biological control technology for Korean pine cones pests, mainly based on Korean pine borer wasps. Through preliminary monitoring, the current stage of the Korean pine cones pest is entering the pupal stage, which is the best time to release the wasps.

Before the prevention and control work began, the staff of the Bureau's forest defense station trained on the correct way to release the wasps. During the release process, the staff used a U-shaped nail gun to nail the container tubes containing the stinging bee pupae to each Korean pine in the seed garden. According to last year's control experience, this year's release standards have been adjusted compared with last year, requiring staff to nail the roding wasp tube to the trunk of the red pine tree more than 1.5 meters above the ground to reduce the flight distance after the adult wasp and optimize the control effect.

The application of biological control technology for Korean pine cones pests, which is dominated by Korean pine borer wasps in the Korean Pine Seed Garden, can sustainably and effectively control the population density of Korean pine cones pests for a long time, thereby reducing the harm to Korean pine branches and cones, and escorting the germplasm resources of Korean pine. (Zhang Yuhua)