Diseases and insect pests of growing mango control of horizontal tail leaf moth

(1) the harm is also called heart-drilling worm. It is common in mango producing areas and is an important pest of mango. The young worms eat the tender shoots and spikes, causing the tender shoots or spikes to wither or grow weak.

(2) morphological characteristics of adult body length 11mm, wingspan 23mm. The back of the body is dark brown, the ventral face is grayish white, the head is brown, and the horizontal lines of the forewings are obvious; the rear wings are grayish brown. The egg is flat and round, about 0.5mm in diameter, cyan at first birth, reddish brown after birth, and lighter color before hatching. The pupa is 9.5~11mm in length, short, thick and yellowish brown.

(3) the living habits occur for 8 generations a year in Nanning area, and the generations overlap. Pupae begin to winter in withered branches, bark crevices and weeds in early October every year. Eclosion began in late January of the following year. Adults mostly Eclosion in the morning, nocturnal activity, mating, oviposition 3-5 days after mating, mostly scattered on old leaves or tender shoots, 50 eggs per female, with an average of 200 eggs. Most of the larvae hatched in the morning and in the morning, and the newly hatched larvae mainly damaged the veins and petioles of the young leaves, and sometimes the inflorescences, and concentrated on the tender shoots and spikes after the 3rd instar. The larvae are 5th instar, and most of the mature larvae pupate in withered branches, bark or other shells.

(4) the first control method is to clear the garden in winter, cut off dead branches and rotten wood, and brush the trunk with 1:10 lime water to reduce the population number of overwintering insects. Second, the straw is tied to the tree trunk to induce the larvae to pupate and burn them on a regular basis. Third, spray. Drug control was used in egg stage and low instar stage of larvae. Generally, when the 3cm is extracted from the inflorescence and new shoots, the spray begins to be sprayed once every 7 to 8 days, for 2 times in a row. The potions include 90% trichlorfon, 80% dichlorvos plus 40% dimethoate 800 × 1000 times, 20% quick kill, 2.5% enemy kill 2000 × 3000 times.