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http://dx.doi.org/10.5423/RPD.2008.14.3.187

Growth Inhibition Effect of Environment-friendly Farm Materials on Fungal Pathogens of Grape  

Kim, Geon-Ju (Department of Plant Medicine, College of Agriculture, Life & Environment Science, Chungbuk National University)
Choi, Min-Kyung (Department of Plant Medicine, College of Agriculture, Life & Environment Science, Chungbuk National University)
Park, Jong-Han (Horticultural Environment Division, National Institute of Horticultural & Herbal Science, Rural Development Administration)
Cha, Jae-Soon (Department of Plant Medicine, College of Agriculture, Life & Environment Science, Chungbuk National University)
Publication Information
Research in Plant Disease / v.14, no.3, 2008 , pp. 187-192 More about this Journal
Abstract
Five environment-friendly farm materials including $Chitomate^{(R)}$, $Diegyun^{(R)}$, IC-$66D^{(R)}$, Gold $Bordo^{(R)}$, and $Biospot^{(R)}$ were examined for their growth inhibition effect of the 7 fungal pathogens of grape in vitro. $Diegyun^{(R)}$, being composed of natural ingredients which are extracted from a plant, was the most effective in suppression of mycelial growth of the fungi. $Diegyun^{(R)}$ inhibited the mycelial growth of all of fungi over 75% at $2,500{\mu}g{\cdot}mL^{-1}$ on potato dextrose agar(PDA) except Colletotrichum gloeosporioides 04-159. Growth inhibition effect of $Chitomate^{(R)}$, being composed of the chitosan, varied depending on the fungal pathogens on PDA. It inhibited the mycelial growth of the Botrytis cinerea 06-063 at the rate of 75.8% at $40,000{\mu}g{\cdot}mL^{-1}$ on PDA while it inhibited the mycelial growth of the C. gloeosporioides 04-159 at the rate of 6.5%. IC-$66D^{(R)}$ and Gold $Bordo^{(R)}$ are two different formula of the Bordeaux mixture, showed different control effects on mycelial growth inhibition. Except of Acremonium sp. the growth inhibition of IC-$66D^{(R)}$ was a little higher than Gold $Bordo^{(R)}$. $Biospot^{(R)}$, a chlorine formula, showed the strongest growth inhibition on C. gloeosporioides 04-159 among the farm materials used. Inhibition of spore germination of $Chitomate^{(R)}$, $Biospot^{(R)}$ and Gold $Bordo^{(R)}$ was higher than mycelial growth inhibition for Pseudocercospora vitis 04-152. The results suggest that the different types of environment-friendly farm materials are needed for different disease control in organic grape farm.
Keywords
Environment-friendly farm materials; Fungal pathogen; Grape disease; Growth inhibition effect;
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