Evaluation of crude toxin and metabolite produced by Helminthosporium gramineum Rabenh for the control of rice sheath blight in paddy fields

2007 ◽  
Vol 26 (7) ◽  
pp. 1036-1041 ◽  
Author(s):  
Guifang Duan ◽  
Zhengbo Zhang ◽  
Jianping Zhang ◽  
Yongjun Zhou ◽  
Liuqing Yu ◽  
...  
Keyword(s):  
Sheath Blight ◽  
Paddy Fields ◽  
Rice Sheath Blight ◽  
Crude Toxin

Effects of straw incorporation on Rhizoctonia solani inoculum in paddy soil and rice sheath blight severity

2013 ◽  
Vol 152 (5) ◽  
pp. 741-748 ◽  
Author(s):  
H. ZHU ◽  
Z. X. WANG ◽  
X. M. LUO ◽  
J. X. SONG ◽  
B. HUANG
Keyword(s):  
Rhizoctonia Solani ◽  
Disease Severity ◽  
Rice Straw ◽  
Paddy Soil ◽  
Sheath Blight ◽  
Soil Productivity ◽  
Rice Sheath Blight ◽  
Important Method ◽  
Pathogen Dynamics ◽  
Straw Incorporation

SUMMARYIncorporation of rice straw into soil has traditionally been an important method of recycling nutrients and improving soil productivity. Currently, although the effects of straw incorporation on disease severity have been documented, the dynamics of the pathogen in soil after straw incorporation are poorly understood. In the present study, rice straw with various proportions of diseased straw was incorporated at three separate locations (SuPu town, SuSong County and FengYang County) in Anhui province, China. The pathogen dynamics in paddy soil and disease severity of sheath blight during two continuous years from April 2010 to April 2012 were investigated. For all three locations, the amount of pathogen inoculum that persisted in the soil increased with increases in the proportion of diseased straw incorporated. Incorporation of 0·3 and 0·5 diseased straw into soil increased the amount of pathogen inoculum in the soil significantly, whereas incorporation of 0·1 diseased straw into soil had no significant effect on the pathogen inoculum compared with the control (no straw incorporated) or disease severity. Incorporation of healthy rice straw (no disease) resulted in a significant decrease in disease severity, whereas proportions of 0·3 and 0·5 diseased straw resulted in a significant increase of disease severity compared with the control. These results suggested that incorporation of diseased straw enhanced pathogen numbers in soil during the whole decomposition period and increased disease severity. To avoid soil-borne disease accumulation, severely diseased straw should be removed from the field or pre-treated before incorporation.

Functional analysis of polygalacturonase gene RsPG2 from Rhizoctonia solani, the pathogen of rice sheath blight

2017 ◽  
Vol 149 (2) ◽  
pp. 491-502 ◽  
Author(s):  
Xijun Chen ◽  
Li Lili ◽  
Yun Zhang ◽  
Jiahao Zhang ◽  
Shouqiang Ouyang ◽  
...  
Keyword(s):  
Functional Analysis ◽  
Rhizoctonia Solani ◽  
Sheath Blight ◽  
Rice Sheath Blight ◽  
Polygalacturonase Gene

Effervescent fast-disintegrating bacterial formulation for biological control of rice sheath blight

2007 ◽  
Vol 119 (2) ◽  
pp. 229-235 ◽  
Author(s):  
R. Wiwattanapatapee ◽  
A. Chumthong ◽  
A. Pengnoo ◽  
M. Kanjanamaneesathian
Keyword(s):  
Biological Control ◽  
Sheath Blight ◽  
Rice Sheath Blight

scholarly journals Biological Control Activity of Two Isolates of Pseudomonas fluorescens against Rice Sheath Blight

2006 ◽  
Vol 22 (3) ◽  
pp. 289-294 ◽  
Author(s):  
Gyung-Ja Choi ◽  
Jin-Cheol Kim ◽  
Eun-Jin Park ◽  
Yong-Ho Choi ◽  
Kyoung-Soo Jang ◽  
...  
Keyword(s):  
Biological Control ◽  
Pseudomonas Fluorescens ◽  
Sheath Blight ◽  
Rice Sheath Blight ◽  
Control Activity
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