บทคัดย่องานวิจัย

หมวดหมู่ : ฐานข้อมูลงานวิจัย

Short-term and long-term high carbon dioxide treatments for insect disinfestation of flowers and leafy vegetables.

Cantwell, M. I., Reid, M. S., Carpenter, A. and Nie, X.

Harvest and postharvest technologies for fresh fruits and vegetables. Proceedings of the international conference, Guanajuato, Mexico, 20-24 February, 1995. Year: 1995 Pages: 287-292 Ref: 7 ref.

1995

บทคัดย่อ

Short-term and long-term high carbon dioxide treatments for insect disinfestation of flowers and leafy vegetables.

ABSTRACT :

 

It is stated that long distance transport of horticultural commodities offers the opportunity to control common insect pests by prolonged exposure to low temperatures in combination with insecticidal atmospheres. Another alternative for postharvest insect control is to apply more extreme short-term pre-transit controlled atmosphere treatments. Various atmospheres enriched in carbon dioxide were evaluated for their efficacy in killing green peach aphids [Myzus persicae] and thrips [Thysanoptera], common surface feeding insects on cut flowers and leafy vegetables. Short-term (hours to days) treatments with high CO2 concn (40-100%) and long-term (at low temperature during usual storage and transit periods) treatments with moderate CO2 concn (10-20%) were tested on lettuce, broccoli, roses and carnations at various temperatures ranging from 0 to 20 deg C. Insect mortality was tested in similar atmospheres at 0 to 48 deg C. Various treatment combinations were effective in achieving complete insect ki

ll before the development of phytotoxic symptoms. Under moderate CO2 concn, insects (thrips) could be killed in as little as 7 days, although more typically mortality was achieved by 10-14 days (aphids). Under high CO2 concn, complete mortality was consistently achieved at 0 deg C with 80-100% CO2 within 12 h.