บทคัดย่องานวิจัย

หมวดหมู่ : ฐานข้อมูลงานวิจัย

Using chemical and biological treatments to reduce the potential of potato leak caused by Pythium aphanidermatum in Tunisia.

Triki, M. A.; Priou, S.;

Potato Research Year: 1997 Vol: 40 Issue: 4 Pages: 391-398 Ref: 16 ref.

1997

บทคัดย่อ

Using chemical and biological treatments to reduce the potential of potato leak caused by Pythium aphanidermatum in Tunisia.

The effect of fungicides and the antagonistic fungus Trichoderma harzianum (Th) on the potato leak pathogen P. aphanidermatum (Pa) was investigated in vitro. Rot was reduced by 73-89% when tubers inoculated with Pa were treated by immersion in solutions (0.5% w/v) of metalaxyl + mancozeb (as Ridomil MZ58), mancozeb (as Dithane M45), maneb (as Manebe 80) and hymexazol (as Tachigaren 360). Complete protection was achieved by dusting inoculated tubers with Ridomil MZ58 diluted in kaolin at a final concentration of 0.1% (w/w). The biological treatments of dipping inoculated tubers in a conidial water suspension of Th at 108 conidia/ml or of dusting with a mixture of a barley culture of Th and kaolin to a final concentration of 2x109 conidia/g were as effective as the chemical treatments. Control was still effective when inoculated tubers were treated with Ridomil MZ58. Tachigaren 360 or the conidial suspension of Th after 24 h incubation at 25 deg C.