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Join the channel and enjoy the benefits.    / @조경과구들장-c7t   This is a channel for sharing tips on living in rural areas. This is a pine tree infected with pine needle gall midges. When infected with pine needle gall midges, the larvae form galls at the base of pine needles around June. They suck the sap from these galls, causing the needles to grow only half their normal length, stunting growth. Pine trees infected with pine needle gall midges will experience brown needles in the fall and early leaf loss. In severe cases, most of the branches from the same year will wither and die. Pine trees infected with pine needle gall midges will experience increasing damage each year, reaching the critical stage in the fifth to seventh year. After this critical stage, pine trees typically die by 20-30%, but in some regions, up to 80% of the trees may die. After the peak of the damage period, the severity of damage decreases rapidly. Pine trees that have recovered from previous infections will likely suffer significant damage if re-infested, but they are unlikely to die. Pine needle gall midges occur once a year and overwinter as larvae under ground cover or in soil 1-2 meters deep. However, in some regions, larvae can be found overwintering in insect galls. Overwintering larvae spin cocoons between early May and mid-June, pupating within them. They emerge 20-30 days later, from mid-May to mid-July. Emergencies peak in early-mid June, with many emerging the day after rain. Immediately after emergence, adults fly through the forest's understory vegetation to mate. After mating, males die within a few hours, while females survive for 1-2 days to lay eggs. Females lay an average of six eggs on pine needles. After five to six days, they hatch into larvae. These larvae migrate to the base of the needles, sucking sap between the leaves and forming galls. Control Methods To alleviate competition for nutrients and moisture, which pine needle gall midges are vulnerable to, false cutting is recommended. In spring, ground cover can be removed to dry the soil and kill larvae. Furthermore, covering the ground with plastic can be used to prevent larvae from moving to overwintering sites or to prevent emerging adults from moving into the tree canopy during the emergence period. A pesticide control method involves spraying trees with insecticides in early May to late June. However, for individual gardeners, this can be cumbersome and somewhat difficult. Difficulty often leads to its rejection. So, isn't there a simpler, more effective method? No. There is. Spray insecticide granules evenly under the pine canopy in late November to early December or late April to late May. Currently, 53 pesticides are registered to control pine needle gall midges. Using liquid, emulsion, or mist-based products is cumbersome and requires precise timing, making application difficult. There are 17 different granule products available, including Curatel, Nodaji, Mocap, and Pilsachung. Simply choose any one of these and spray evenly under the pine tree.