Effect of different active ingredients of fungicides on Alternaria spp. growth in vitro
Lithuanian Institute of Horticulture, LT-54333 Babtai, Kaunas distr., Lithuania;e-mail: e.surviliene@lsdi.lt
Abstract:
The impact of different active ingredients of fungicides on the development of Alternaria species in vitro was estimated by using Amistar 250 SC (azoxystrobin), Signum 334 WG (boscalid, pyraclostrobin), Zato 50 WG (trifloxystrobin) and Folicur 250 EW (tebuconazol). The growth colonies of micromycetes Alternaria alternata (isolated from Thymus vulgaris, Levisticum officinale), Alternaria alternata, Alternaria brassicae (isolated from Brassica oleracea convar. capitata var. alba) and Alternaria dauci (isolated from Daucus carota) were tested on the potato dextrose agar medium with additions of fungicides. All tested fungicides showed sufficient inhibitory activity on the growth Alternaria spp. colonies, , which decreased on average from 94-25% over 21 days in comparison with the control.
Key words:
Alternaria alternata, Alternaria brassicae, Alternaria dauci, fungicides, growth inhibition