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Synthesis of Pyto-patch as Silver Nanoparticle Product and Antimicrobial Activity  

Kwak, Young-Ki (Kangwon National University)
Kim, Seong-Il (Gangwon Provincial ARES)
Lee, Jong-Man (ABC NANOTECH CO. LTD.)
Kim, Il-Seop (Kangwon National University)
Publication Information
Journal of Bio-Environment Control / v.21, no.2, 2012 , pp. 140-146 More about this Journal
Abstract
The commercial product "pyto-patch" prepared as nano sized silver particle less than 5 nm, has effective antifungal activity against Collectotrichum gloeosporioides, Botrytis cinerea, Sclerotinia sclerotiorum in vitro. As a fungal growth inhibiton mechanism, it can reduce spore germination rate and mycelial growth. As s promising fungicide, Phyto-patch can control anthracnose effectively. The spore of C. gloeosporioides dipped in 5 ppm phyto-patch dilute suppressed germination rate to 13.2%, and mycelial growth stopped for 15 days at 10 ppm. The spore postinoculated on 10 ppm phyto-path smeared PDA surface could not germinate for 3 days and prohibit pathogen infection effectively. In field test, the anthracnose development of 4 ppm phyto-patch treated plot was less than 7% after 21 days compaired to 40% of it in untreated plot. In heavy rainfall season, pepper anthracnose effectivly contrrolled by regular 10 ppm phytopatch spraying every 7 days. The diseased pepper fruit decreased to 5.8% compaired to 94.6% in untreated plot. During drying period, the diseased pepper fruit havested in phyto-patch treated plot was 24.2%, but pepper fruit havested in untreated plot destroyed to 100% within 3 days. The nano silver particle coated on multching textile prevented late blight of pepper effectively and disease occurance delayed about month.
Keywords
anthracnose; field test; Mycelial growth inhibion; spore germination rate; silver nanoparticle;
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