When Hainan red beans are attacked by moths, master a good way to solve it in one move

Hainan red bean is a legume, red bean is an evergreen tree or shrub plant, because of its beautiful leaves, neat and smooth canopy, leaf state, summer to form a dense green shade, spring young leaves germinate lemon yellow or pink, and then turn yellowish, lasting up to 2-3 months. It is widely cultivated in the south, but the moth is very harmful to Hainan red beans, so how to control it?

[1] Hazard characteristics

In addition to feeding on plant leaves and young branches, the larvae are also harmful to the buds, flowers, young fruits and fruits of the plant. Large occurrences often eat the leaves, hang on the tree full of sacs, after eating the leaves can also be transferred to nearby plants harmful, eating a wide range of food.

[2] Occurrence law

The number of algebras that occur in a year varies by species. Mostly overwinter with larvae and eggs. The young larvae are active, clustering the surface of the sac, spitting silk drooping, drifting with the wind, and then spitting silk on the leaf surface and branches to make sacs, hiding in it. The mature larvae suspend the sac with silk fixation on the plant and pupate inside the sac. After the male moth feathers, it flies out from the lower end of the sac. The female moth still inhabits the sac after feathering, sticking out her head and chest to wait for the male moth to fly to cross the tail. Female moths lay eggs in the sac or leave fertilized eggs in the abdomen. Each female moth lays about 100 to 200 eggs, up to a maximum of 3,000.

[3] Prevention and control

1, artificial control: in winter, combined with pruning twigs, manual removal of bags, this is the best opportunity.

2. Male adults have phototropism and can light lamps to lure moths.

3, chemical control: you can use Guangzheng spray control, but because the moth drills in the bag, spray pesticides, it is not easy to kill the insects, to spray multiple times in a row, about 5 days apart, spray 3 times. The worm in the bag was so hungry that it could no longer bear it and came out to eat and died.