Insecticide from ... stink bugs

Finding out the process of breeding brown stink bugs with white border, four '8X' students of Vinh University gave effective solutions to kill pests. This group of students is proceeding to propagate stink bugs and provide free to farmers.

Five months of hard work

Adult stink bugs are eating pests.Photo: Research team.

Right from the idea of ​​breeding this species to replace pesticides, four students of Thai Thi Ngoc Lam, Ho Dinh Thang, Tran Thi Nhu Quynh and Phan Thi Thu Hien were enthusiastically taught by Vinh University's lecturers. encourage. Because the species of brown stink bug with white border, scientific name Andrallus spinidens Fabricius, has a great appetite, high fertility, a natural enemy species: taking pests for food.

According to Ngoc Lam, the leader of the research team, using bugs is cheaper than using pesticides, especially ensuring food hygiene and safety. The topic 'The process of breeding and using brown stinks on white pests to prevent pests' was carried out in two stages: breeding large numbers of brown stinks with white border in the laboratory; spread them out in the field to assess the results of pest control.

Five months of research is really the hard work of this group of students. The group must divide the work: people catch stink bugs, who work in pairing for them to breed, then hatch eggs, save eggs, record progress and work results. As Quynh said: 'When the first incubation, the group was busy looking at the hatched eggs, forgot to cover the test tube, causing the parents to escape, the four racers competing to chase around the room, getting lucky.

Will business stink bugs

Research results of the project 'The process of breeding and using brown stinks on white pests for plant pest control' was highly appreciated by the jury VIFOTEC 2008 by new factors: the process of breeding brown stinks with white border in laboratory conditions; how to use this species of bugs to prevent white caterpillars of green vegetables from crucifix (cabbage, cabbage, cauliflower, etc.) and peanut worms; determine the effective threshold of brown stink bugs with white border for white butterfly caterpillar harmful to cross vegetables.

Ngoc Lam said: 'The effective threshold is understood as the density of brown stink bugs in the field to kill the vegetable pest on that field. If released too much, the pest will be killed very quickly, but the bugs themselves cannot survive because of lack of food. If the amount of natural enemies is less than the number of pests and diseases, it will affect crops. It can be seen that the determination of effective threshold will avoid wasting natural resources and ensure ecological balance. "

Lam added: 'The saving of brown stink eggs is very important. It will be a source of natural enemies available when disease occurs in crops. The gardener must know how easy it is to have an outbreak to plan for hatching this bug's egg. ' The team also showed the growth and development life cycle of brown stink bugs. The age of a stink bug (equivalent to one day) is not deep; age two (corresponding to two to three days) eat very little .; Over 30 days are adulthood, eat well, and have the ability to spread widely to find food. Combining those rules, gardeners will be able to actively source brown stink eggs with white border as well as hatching time to effectively prevent diseases.

The research team is conducting multiplication of this species of bugs in a large number in the laboratory to provide free for people in Vinh City and some surrounding areas. 'If the results are positive, the group will set up the Stink Shop', Ngoc Lam boasted.