บทคัดย่องานวิจัย

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Effect of fungicides and controlled-atmosphere storage on LTB rot of apples.

Sholberg, P. L.; Haag, P.; Gaudet, D. A.;

Canadian Journal of Plant Science Year: 1995 Vol: 75 Issue: 2 Pages: 515-520 Ref: 16 ref.

1995

บทคัดย่อ

Effect of fungicides and controlled-atmosphere storage on LTB rot of apples.

 

Inhibition of mycelial growth of the low-temp. basidiomycete (LTB) strain LRS 233, which causes LTB rot of pome fruit, was evaluated on PDA amended with 15 fungicides. Flusilazole and triadimefon were the most effective fungicides, reducing growth by 98.2 and 71.5%, respectively, when used at 1 micro g/ml. Mancozeb was effective at higher concn, reducing growth by 96.9% (when used at 100 micro g/ml). In orchard tests, dodine, metiram, sodium hypochlorite and ziram reduced LTB rot of Spartan apples in controlled-atmosphere (CA) storage in 1986-87 and 1988-89. Flusilazole and imazalil were also effective and thiophanate-methyl was ineffective. Flusilazole, propiconazole and myclobutanil reduced the incidence of LTB rot of inoculated apples, while mancozeb and metiram were ineffective. The LTB fungus grew slower in CA storage than in air. After 28 d in CA storage, the av. colony diam. and wt of 3 LTB strains tested reduced by 25.5 and 65.7%, respectively, compared with air storage.