MANAGEMENT borer sweet potatoes: Efficient production "intensive synthetic"

MANAGEMENT borer sweet potatoes: Efficient production "intensive synthetic"
Yam production process according to the "intensive synthetic" has some new point than traditional manufacturing as using mulch, Trichoderma, lemongrass plant ... But according to the scientists, this is the solution needed setting, if done well will manage very effectively borer sweet potatoes today.

This is evidenced in the growing field of sweet potatoes in some social experiment Binh Tan district, follow the theme "Build processes and integrated management model sweet potato borer in Vinh Long province," the fruit borer control has roots down to around 5%, while the field outside models up to 40- 50%.

Sewing weak field sanitation

The theme was developed with the goal of assessing the current status of borer damage sweet potatoes and effectiveness of prevention and treatment measures. At the same time, the proposed process and build a model of integrated management borer sweet potatoes applied effectively feasibility and production in the province of Vinh Long.

As reported by Dr. Le Van Vang (Faculty of Agriculture CTU) and Master Nguyen Thi Ngoc Tuyet (Plant Protection Vinh Long), co-Manager, the survey process and the life cycle biological characteristics, test some management measures, determined under Lepidoptera pests (Lepidoptera), they light him (Pyralidae).

Also according to the research group, the coincidence of these pests are butterflies have a wingspan smaller than 2cm wide, its body and wings are gray, with many wondering and white spots along the horizontal crease and in the middle the wing. When enough, the larvae can develop on the surface attack potatoes, cut into tubers forming small round holes. When large enough, the larvae immediately pupation in the soil dark brown color of the soil coincides with so very difficult to detect.

However, according to Nguyen Ngoc Tuyet Master, through deep study of this species is very easy to die, having appropriate conditions likely to come from underground to cause harm. One of the factors causing these pests thrive over time, the farmers are constantly growing sweet potatoes, ground short exposure time, field sanitation sewn crudely made.

Another reason, the last recorded at the time of harvest encounter unfavorable prices to potato farmers were anchored outside the field waiting for prices.

This is thought to facilitate deep harm. Through the survey, the researchers also said that most often root borer causing heavy damage in the period from 3 months yam older. Falling into these cases, farmers will enhance processing plant protection chemicals accidentally kills the predators, pests resistance will increase the area of damage.

Intensive potato production synthesis

One point of adopting new manufacturing processes "intensive synthesis" is used mulch, Trichoderma, lemongrass plant ...

According to Master Nguyen Ngoc Tuyet, the primary production like land preparation, seed processing is also very important. "The larvae of this worm from the ground starting point emerges harm, so, before sowing should clean up crop residue from the previous crop and plowed dry soil or apply for waterlogged fields.

After harvesting Flooding should give at least 7 days to kill eggs, larvae and pupae. The process should incorporate planting beds lime, organic fertilizers (500kg / 1,000m2) and Trichoderma (1kg / 1,000m2).
 
According to Master Nguyen Ngoc Tuyet, using plastic mulch on rainbow before planting can prevent infiltration and root borer damage and even devotees (beetles), according harm sweet potatoes.
 
This is evidenced from the results of production for farm use mulch, yields only 7.2% tuber damage, while the exterior field pattern losses up to 11.3%.

To remove existing resource storage of yam borer and limit the damage of wire wilt, the team also advised people to be treated by soaking cuttings in Trichoderma 0.5% solution.

In particular, coastal planting potato fields citronella to repel pests also is one of the new point that many participating farmers appreciated models.

According to Dr. Le Van Vang, measures have been studied in many other crops, not only the sweet potatoes. Kingfisher will be planted on embankments before placing sweet potato cuttings (3- 5 days) and scattered in fields planted when placing cuttings.

In case of necessity (the onset of disease), the field will be processed yam plant protection drugs, but must adhere to the principle of "four correct", minimize rampant drug use do kill natural enemies and negatively affect the environment.

In the long run, Master Nguyen Van Liem, deputy director of the Department of Agriculture and Rural Development warns that farmers need crop rotation rice or sweet potatoes with other vegetables to cut off its food supply, maggot, worm and kill Young and pupae in the soil.
 
Should allocate appropriate seasons, to the coordination of the planning scattered, not to anchor oversized potato field and ensure profits for farmers and limited the damage root borer.

Mr Nguyen Tan Thanh, sweetpotato farmers in Thanh Trung Commune (Binh Tan) said: Follow the process down about 50% of plant protection products, should cost significantly decreases external production model . Last potato after potato harvest yields were tubers borer attack on 4 of his potato bar to about 10%, while the potato prior to 60%.