The effectiveness of some fungicides in reducing the mycelial growth of Alternaria solani and A. alternata under laboratory conditions
Jerzy Osowski
j.osowski@ihar.edu.plInstytut Hodowli i Aklimatyzacji Roślin w Radzikowie, Zakład Nasiennictwa i Ochrony Ziemniaka w Boninie (Poland)
Abstract
The efficiency of 7 different fungicides, recommended controlling early blight, in reducing the mycelial growth of Alternaria spp. was evaluated in laboratory experiments using potato-agar medium. Three contact fungicides: zoxamide + mancozeb (Unikat 75 WG), fluazynam (Altima 500 SC) and propineb (Antracol 70 WG), two translaminar fungicides: cymoxanil + famoxate (Tanos 50 WG) and fenamidon + mancozeb (Pyton 60 WG), and two systemic fungicides: metalaxyl-M + mancozeb (Ridomil Gold MZ 68 WG), and iprowalikarb + mancozeb (Melody Med 69 WG) were compared. The results showed that all the tested fungicides significantly reduced the mycelial growth. The lowest effectiveness was observed with the mixture cymoxanil + famoxate (Tanos 50 WG).
Keywords:
Alternaria solani, Alternaria alternata, active ingredient, concentration, early blight, dose, myceliumReferences
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Authors
Jerzy Osowskij.osowski@ihar.edu.pl
Instytut Hodowli i Aklimatyzacji Roślin w Radzikowie, Zakład Nasiennictwa i Ochrony Ziemniaka w Boninie Poland
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