บทคัดย่องานวิจัย

หมวดหมู่ : ฐานข้อมูลงานวิจัย

Attempts to control Botrytis cinerea on roses by pre- and postharvest treatments with biological and chemical agents.

Elad, Y.; Kirshner, B.; Gotlib, Y.;

Crop Protection Year: 1993 Vol: 12 Issue: 1 Pages: 69-73 Ref: 11 ref.

1993

บทคัดย่อ

Attempts to control Botrytis cinerea on roses by pre- and postharvest treatments with biological and chemical agents.

Trichoderma harzianum, polyoxine, fenpiclonil, tebuconazole with or without dichlofluanid, and fenbuconazole sprayed once a week, were evaluated for control of B. cinerea on roses. Infection of branches was reduced by 50-70% following treatment. Severity, but not incidence, of petal infection was significantly controlled by some of the fungicides but only when the evaluation dates were soon after application of the control agents. Fenpiclonil, tebuconazole, dichlofluanid alone or alternated with T. harzianum, and T. harzianum alone also reduced development of grey mould on flowers that were harvested soon after the treatment and incubated under Botrytis-conducive conditions. This beneficial effect was observed only with latent natural infection and not in flowers inoculated with B. cinerea conidia after harvest. The difficulty of controlling the disease by sprays in the greenhouse is discussed. Postharvest treatments of cut flowers with iprodione + thiram, tebuconazole + dichlofluanid or polyoxin D, but not with another 11 treatments, reduced disease incidence by 50-58%.