Effect of Acetic and Lactic Acid Mixtures on Control of Quarantine Nematode, Bursaphelenchus xylophilus, in Exporting Cymbidium

Research in Plant Disease

卷:20

Jae Yong Chun¹  Myoung Rae Cho²  Young Ho Kim³  Yunhee Seo³  Jiyeong Park³ 

[1] Animal and Plant Quarantine Agency;

[2] Rural Development Administration;

[3] Seoul National University;

关键词: Bursaphelenchus xylophilus;    Control;    Cymbidium;    Nematode mortality;   

DOI  :  http://dx.doi.org/10.5423/RPD.2014.20.3.227

来源: DOAJ

【 摘 要 】

The mixture (MX) of acetic acid (AA) and lactic acid (LA) was examined for its effectiveness in the control of thepine wood nematode Bursaphelenchus xylophilus contaminated in cymbidium culture medium. Nematodemortality in vitro was nearly 100% in AA and MX at the concentrations of 5.0-1.0% (pH 2.6 – 4.2) and in LA onlyat 5.0% (pH 3.5), but lowered at concentrations of 0.5-0.1% (pH 5.1-6.9) more significantly in LA than AA andMX. MX of most concentrations caused higher nematode mortality than the average response to AA and LA.All treatments of MX (0.5% and 0.25%), fosthiazate (standard and double concentrations) and culture dilutionof Paenibacillus polymyxa GBR-1 (107colony-forming units/ml) reduced significantly the nematode populationsin the cymbidium culture medium, compared to non-treatment control, with no significant differenceamong the treatments. No phytotoxicity occurred in all treatments. pH of the medium with the time aftertreatment and growths of 2-year-old cymbidium were not significantly different among treatments. Consideringthe safety and price of the organic acids, use of MX in the processes for culturing cymbidium may be apractically reliable and eco-friendly way in the control of the quarantine nematode in cymbidium.

【 授权许可】

Unknown