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Effects of Pyroligneous Acid on Control of Large Patch in Zoysiagrass  

Geon Min-Goo (Technogreen Co., Ltd Research Institute)
Kim In-Seob (Technogreen Co., Ltd Research Institute)
Lee Sang-Chul (Department of Agronomy Kyungpook National University)
Son Tae-Gwon (Department of Agronomy Kyungpook National University)
Shim Gyu-Yul (Korea Turfgrass Research Institute)
Kim Seong-Nam (Technogreen Co., Ltd Research Institute)
Publication Information
Asian Journal of Turfgrass Science / v.19, no.2, 2005 , pp. 73-83 More about this Journal
Abstract
This study was carried out to investigate control efficacy of fungicides mixed with pyroligneous acid on Large patch caused by Rhizoctonia solani AG2-2. R. solani AG2-2 was not inhibited by concentration of 500 times and 1,000 times diluents of pyroligneous acid. It is thought that R. solani AG2-2 was not inhibited by Pyroligneous acid alone. Pencycuron and tebuconazol mixed with pyroligneous acid had a good effect in prevention of R. solani AG2-2 in zoysiagrass. Concurrently, it was observed that those were reduced $50\%$ of usage of fungicides. 500 times and 1,000 times diluents of pyroligneous acid treated group had a significantly effect compared to control turf in the leaf length, leaf width and dry weight. In conclusion, usage of fungicides could be reduced about $50\%$ by a fungicides mixed with pyroligneous acid for protection of R. solani AG2-2. Therefore, It is thought that fungicides mixed with pyroligneous acids can be reduced an economic load and also an environmental pollution such as a tolerance to pathogenic bacteria and a destruction of an ecological system of soil microbes according to use fungicides.
Keywords
fungicides; large patch; pyroligneous acid; Rhizoctonia solani AG2-2; Zoysiagraa;
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