Control methods of mango weevil

1. Mango leaf-cut weevil is widely distributed, adults feed on mango tender leaves, causing the leaves to dry up, or females lay eggs on the tender leaves and bite off the tender leaves from the base, affecting plant growth. Control methods: during the tender shoot growth period, ① picked up the fallen leaves that were bitten off every 3 days, dried and burned, and killed the larvae; ② sprayed once every 7 days during the tender shoot growth period, using 1500 times of 40% dimethoate EC, 1000 times of 90% trichlorfon, 500 times of 2.5% dimethoate and 2.5% of enemy killing 2004000 times. two。 Fruit mango weevil and pulp mango weevil the former is a small beetle, about 7 mm long, black. The larvae eat mango seeds and affect the fruit quality; the flesh mango weevil is a small yellowish-brown beetle smaller than the fruit mango weevil, whose larvae eat the flesh, form tunnels and are filled with insect dung, making the fruit inedible. These two kinds of insects mainly occur in Yunnan, Vietnam, Cambodia and Indonesia and belong to quarantine objects. However, it is reported that this insect has been found in the border area between Guangxi and Yunnan in recent years. As the damage of these two kinds of insects is serious, but they only occur in local areas, quarantine must be strengthened to prevent them from expanding to the new area. In recent years, it is dangerous to import mangoes from Vietnam in large quantities without quarantine. Control methods: ① strictly quarantine system in areas where the pest has not been found, strictly prevent expansion in new areas; ② does a good job in orchard hygiene in pest-infested areas, pick up fallen fruits in time, and concentrate on poisoning; ③ autumn and winter combined with clear garden weeds, fine ploughing, removal of overwintering pests in soil cracks During the young fruit stage of 30-45 days after flowering, ④ sprayed the crown with the mixture of dimethoate, trichlorfon and water 1-1-1-5, once every 7-10 days, for 3 times in a row.