Variation in Fungicide Sensitivity Among Rhizoctonia Isolates Recovered from Potatoes in South Africa (Record no. 51334)

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control field MX-MdCICY
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control field 20250625160205.0
040 ## - CATALOGING SOURCE
Transcribing agency CICY
090 ## - LOCALLY ASSIGNED LC-TYPE CALL NUMBER (OCLC); LOCAL CALL NUMBER (RLIN)
Classification number (OCLC) (R) ; Classification number, CALL (RLIN) (NR) B-17171
008 - FIXED-LENGTH DATA ELEMENTS--GENERAL INFORMATION
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245 10 - TITLE STATEMENT
Title Variation in Fungicide Sensitivity Among Rhizoctonia Isolates Recovered from Potatoes in South Africa
490 0# - SERIES STATEMENT
Volume/sequential designation Plant Disease, 102(8), p.1520-1526, 2018
520 3# - SUMMARY, ETC.
Summary, etc. Rhizoctonia is a major pathogen of potato causing substantial yield losses worldwide. Control of Rhizoctonia diseases is based predominantly on the application of fungicides. However, little is known about the fungicide response variability of different Rhizoctonia anastomosis groups associated with potato diseases in South Africa. A total of 131 Rhizoctonia isolates were obtained from potato growing regions of South Africa from 2012 to 2014 and evaluated for sensitivity to fungicides in vitro and in vivo. The fungicides comprised six chemical formulations and one bio-fungicide representing seven Fungicide Resistance Action Committee groups. All Rhizoctonia anastomosis groups were sensitive to tolclofos-methyl (EC50: 0.001 to 0.098 µg a.i. ml-1)and fludioxonil (EC50: 0.06 to 0.09 µg a.i. ml-1)and showed variation in sensitivity to pencycuron, iprodione, benomyl, and Bacillus subtilis QST 713. However, for azoxystrobin, Rhizoctonia isolates exhibited variable sensitivity ranging from sensitivity (EC50: <0.09 µg a.i. ml-1)to insensitivity with EC50 values exceeding 5 µg a.i. ml-1. In greenhouse and field trials, tolclofos-methyl and fludioxonil exhibited significantly greater control of stem and black scurf whereas azoxystrobin was the least effective. This work demonstrated variable sensitivity within and among anastomosis groups of R. solani and binucleate Rhizoctonia to different fungicides. Information on fungicide sensitivity of Rhizoctonia isolates is crucial in the development of effective Rhizoctonia control strategies and facilitates monitoring of fungicide insensitive isolates in the pathogen population.
650 14 - SUBJECT ADDED ENTRY--TOPICAL TERM
Topical term or geographic name entry element RHIZOCTONIA
700 12 - ADDED ENTRY--PERSONAL NAME
Personal name Muzhinji, N.
700 12 - ADDED ENTRY--PERSONAL NAME
Personal name Woodhall, J. W.
700 12 - ADDED ENTRY--PERSONAL NAME
Personal name Truter, M.
700 12 - ADDED ENTRY--PERSONAL NAME
Personal name Van Der Waals, J. E.
856 40 - ELECTRONIC LOCATION AND ACCESS
Uniform Resource Identifier <a href="https://drive.google.com/file/d/15Dhii-Eo7SXKqUp5ta1cjPn8NZaYGvdn/view?usp=drivesdk">https://drive.google.com/file/d/15Dhii-Eo7SXKqUp5ta1cjPn8NZaYGvdn/view?usp=drivesdk</a>
Public note Para ver el documento ingresa a Google con tu cuenta: @cicy.edu.mx
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Source of classification or shelving scheme Clasificación local
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  Clasificación local     Ref1 CICY CICY Documento préstamo interbibliotecario 25.06.2025   B-17171 25.06.2025 25.06.2025 Documentos solicitados