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National Chung Hsing University Institutional Repository - NCHUIR > 農業暨自然資源學院 > 農業暨自然資源學院 > 依資料類型分類 > 期刊論文 >  Formulation of a soil biofungicide for control of dampincr-off of Chinese cabbage (Brassica chinensis) caused by Rhizoctonia solani

Please use this identifier to cite or link to this item: http://nchuir.lib.nchu.edu.tw/handle/309270000/134588

標題: Formulation of a soil biofungicide for control of dampincr-off of Chinese cabbage (Brassica chinensis) caused by Rhizoctonia solani
作者: Chung, W.C.;Huang, J.W.;Huang, H.C.
黃振文
關鍵字: alginate;PBGG;Streptomyces spp;Rhizoetonia damping-off;biocontrol agent;suppression;beads;root
日期: 2005
Issue Date: 2012-12-14 10:57:37 (UTC+8)
關連: Biological Control, Volume 32, Issue 2, Page(s) 287-294.
摘要: A granulate biofungicide named PBGG was developed by combining Pseudomonas boreopolis with Brassica seed pomace, glycerin and sodium alginate. Application of 1.0% (w/w) of PBGG to the soil infested with Rhizoctonia solani AG-4 significantly reduced the percentage of colonization of cabbage seeds by the pathogen and stimulated proliferations of actinomycetes. Among Streptomyces populations, Streptomyces padanus (strain SS-07) and Streptomyces xantholiticus (strain SS-09) were the two most effective strains with strong antagonistic effects to R. solani. Application of 1% (w/w) PBGG in sod significantly increased population densities of S. padanus and S. xantholiticus. Treating soil with S. padanus (strain SS-07) or S. xantholiticus (strain SS-09) alone or in combination with 1% (w/w) PBGG significantly reduced the percentage of colonization of cabbage seeds by R. solani. compared to untreated controls. S. padanus was the most effective agent in reducing the percentage of seed colonization by the pathogen. Results of greenhouse tests showed that the most effective treatment was the amendment of pathogen-infested sod by S. padanus divided by 1% (w/w;) PBGG which resulted in a disease incidence of 6.5-8.6%. compared to 27.8-31.7% for the treatment of S. xantholiticus divided by 1% (w/w) PBGG, 36.9-38.6% for the treatment of 1% (w/w) PBGG alone. and 61.8-6-4.8% for the treatment of control (unamended soil). Results of greenhouse and field tests also showed that soil amendment of 1% (w/w) PBGG alone or 1% (w/w) PBGG mixed with S. padanus (strain SS-07) or S. xantholiticus (strain SS-09) was not harmful to seed germination of Chinese cabbage. The study suggests that amendment of R. solani infested soil with S. padanus + 1% (w/w) PBGG prior to sowing is an effective method for control of damping-off of Chinese cabbage. (C) 2004 Elsevier Inc. All rights reserved.
Relation: Biological Control
Appears in Collections:[依資料類型分類] 期刊論文
[依教師分類] 黃振文

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