Mango, a common fruit, is also the fruit we love to eat, because the taste is very sweet, deeply loved by consumers, the current mango is also one of the representative fruits of our southern region, the variety of mango is also a lot, just like the relatively large mango is ivory mango, followed by Tai Mang, green mango and other varieties, the current Chinese mango varieties have more than 40 kinds, because of the difference in regions, the varieties of planting are also different, but for foodies, when eating mangoes, we must also pay attention to their own physical condition, Do not blindly eat mangoes, because many people will be allergic when they eat mangoes.
Mango is generally harvested in July-August, to September, the mango fruit tree is in the autumn shoots of the extraction period, for the mango tree, belongs to the south of a fruit, due to the warm weather, to September, the fruit tree is still in the development period, then for many farmers, in the harvest season is very joyful, but some farmers at this time ignored the harm of the pest in September "horizontal tail leaf moth", every year in September to November, is the fruit tree autumn shoots when the time, It is also a high incidence of pests invading fruit trees, if there is no timely treatment at this time, then the transverse tail leaf moth at this time will seriously invade the fruit tree, causing the fruit tree to wilt and die at this time, directly affecting the yield of our mango next year, really, this pest really can not wait.
I visited a lot of mango planting areas, found that a lot of planting areas in September, will break out the harm of the horizontal tail leaf moth, because this pest is a more stubborn pest, but also one of the main diseases and insect pests of mango, according to statistics, the harm of the horizontal tail leaf moth may cause the fatality rate of fruit trees in more than 50%, so you must carry out pest control work at this time, has ensured that we can have a good harvest, today's three rural planting will take you from the characteristics of the horizontal line tail leaf moth, and the harm to fruit trees, prevention and control technology , make a detailed introduction, I hope that you can learn to apply it after reading it, and it can be helpful.
<h1>Learn what a transverse tail leaf moth is</h1>
Horizontal tail leaf moth is also called mango drill heartworm, is a leaf moth insect pest, just like other fruit tree moths like pests, these moth pests are commonly characterized by larvae harm to fruit trees, after a certain period of time, the larvae will feather into pupae, and then pupae through the right temperature, feathered into moths, transverse tail leaf moth in South China occurs 7-8 generations a year, other areas 5-6 generations, transverse tail leaf moth mating, spawning around the fruit tree, some on the branches of the fruit tree, the trunk of the egg.
The larvae have a reddish-brown body, a dark brown head, stripes of different colors on the body, and a length of 12-15 cm. Adult worms 6-12 cm, wings extended 12-22 cm, the head is triangular, the body is dark brown, the wings have tea-brown markings, the eggs are about 0.5 mm, the body is reddish brown, there are 7-8 round spots, the head of the egg appears petal-like. Pupae are 8–12 mm and dark brown.
<h1>Occurrence characteristics of the transverse tail leaf moth</h1>
After the lateral tail leaf moth pupates into moths in February and March of each year, it begins to mate, mating sites are mostly in the mango park, some are on the plants around the fruit tree, sometimes in the branches of the fruit tree, on the inflorescence, after laying eggs, the adults fly away from the park, the female transverse tail leaf moth lays about 200 eggs each time, starting from April, it will harm the leaves and inflorescences of the fruit tree, and in May-June, it will begin to invade the branches and leaves, during which the larvae can grow to 5 years old, in the process of these 5 growths, Each infestation is very severe, the larvae will invade the fruit tree until December, after the dormancy period arrives, the larvae enter the dead branches and fallen branches of the fruit tree for a little hibernation.
Horizontal tail leaf moth is currently the most harmful pest for mango trees, but also the primary pest of all fruit tree pests, this pest is mainly harmful to mango trees, the main larvae of the horizontal tail leaf moth on the fruit tree moth, the main harm to the branches of fruit trees, young leaves, inflorescence, the current horizontal line tail leaf moth distributed in Guangdong, Guangxi, Yunnan and other areas have occurred, basically by the horizontal tail leaf moth infested fruit trees most of the disease is more serious, directly affecting the second year of mango production, Secondly, once the pest harms the young tree or the weak tree, the fruit tree is almost 100% dead, so the current pest control is the best time.
<h1>Hazards of the transverse tail leaf moth</h1>
First, the symptoms of early invasion of fruit trees
The pests are mainly the larvae of the transverse tail leaf moth to invade the fruit tree, after the eggs on the fruit tree hatch in March and April, the initial larvae begin to invade the young shoots and shoots of the fruit tree, new leaves, resulting in the young shoots of the fruit tree being eaten by the larvae after the fracture and death, the young buds and new leaves are all bitten by the larvae, and the leaves on the branches of the fruit tree are bare.
Second, the symptoms of late invasion of fruit trees
This time is the flowering period of fruit trees, the larvae will erode to the inflorescence and young shoots, leaves, inflorescences invaded by the larvae, young shoots, the early stage began to change color slowly, the main reason for discoloration is that after the larva bites the young shoots, it will burrow into the subcutaneous tissue of the young shoots, then the young shoots will appear to wilt and become dark brown, the young shoots will then become black after necrosis, and then the parts of the inflorescence will be swallowed by the larvae, which will cause the young shoots of the fruit trees and the nutrients of the inflorescence to be cut off, and the fruit trees will appear to dry up and die in a large area. Later, the larvae will continue to hide in the branches that have been eaten by moths, waiting for opportunities to continue to invade the fruit trees.
Mango transverse tail leaf moth is mainly to attack the branches of fruit trees, leaves and other parts, the later to the fruit stage, almost rarely sick, now because of the early stage if there is no control, basically the fruit trees that are eaten by pests will not survive, even after survival, the yield is also very low, and the fruit trees are generally infested by pests, the life expectancy will not be very long, so now we must carry out a full range of pest elimination to ensure that we can improve the yield of mangoes.
<h1>Control methods for the transverse tail leaf moth</h1>
(1) The necessary clearance of the garden after harvesting
Most of the larval eggs of the mango transverse tail leaf moth are on the fruit trees of mangoes, we are in the harvest of the qingyuan is a necessary measure, we look at the diseased branches in the park to be cut in time, the cut wounds are smeared with stone sulfur compound for disinfection, and then the diseased branches on the ground of the park may also be the hiding place of the insect eggs, the remnants of the diseased branches are taken out of the park for disinfection treatment and then destroyed, timely search for the pupa of the pest, for the search for the pupae can be found in the absence of diseased branches and trunks, we can use the naked eye to view the pupae of the pests, As long as the leaf bag wrapped in white filament is the pupa of the pest, or find the hidden insect body from the insect dung, and then spray 80% of the dimethody emulsion, for the insect pupae hidden on the trunk can be scraped, the scraping should not be too deep, and then the trunk is coated with quicklime and whitewashed.
(2) Pest management during the growth period
For the adults of the mango transverse tail leaf moth in the spring in 2-3 months to lay eggs, we can kill female adults, adults are generally mated at night, this time can use light to kill adults, let adults reduce mating, strangle the larvae in the cradle, after April to strengthen the inspection of the park, this time is to draw new shoots and inflorescence period, timely pruning of long branches and dense shade branches, maintain the ventilation and light transmittance of fruit trees, find that the branches of insect pests are slightly timely pruning, Then apply stone sulfur compound to disinfect the fruit tree wound, and the intercropping of other crops in the early stage of fruit tree growth can reduce the occurrence of disease.
(3) Appropriate spraying agent for preventive treatment
For the early stage of the disease we must grasp the time of the mango transverse tail leaf moth to invade the fruit tree, for the spring shoots, the flower stage, the autumn shoots should be sprayed with drugs for preventive treatment, especially when the new shoots grow to 3-5 cm, it is necessary to spray drugs, it is recommended that the following drugs be sprayed:
80% dichlorvos emulsion, 50% octylthion emulsion, 20% pyrethroid emulsion diluted with water 1500-2500 times sprayed, or 50% aphidic 800 times liquid, rapid killing 4000 times liquid, 10% cypermethrin 2000 times liquid, 1.8% avermectin 4000 times liquid, dimethoder 1:600 times sprayed, the above drugs sprayed once in 8-10 days, sprayed 3-5 times continuously.
<h1>Precautions</h1>
In view of the harm of the mango transverse tail leaf moth is more serious, a little attention may cause catastrophic harm to the entire park, so in the current month is the best time to control, the early treatment is thorough, the later stage of our mango growth period benefits will not be plagued by insect pests, the above drugs in the spray, to choose in the morning or afternoon, usually according to the weather spraying.