PhD Project on Rhizoctonia in oilseed rape

Agriculture and Horticulture Development Board and the University of Nottingham, UK

Rhizoctonia factsheet
Grains Research and Development Corporation (GRDC), Australia

Fact sheet with tips and tactics about an integrated approach against Rhizoctonia published by the Grains Research and Development Corporation (GRDC) of the Australian Government.

Rhizoctonia solani (AG8): new breakthroughs in control and management
D. Hüberli, M. Connor & B. MacLeod, Department of Agriculture and Food, Western Australia (DAFWA
R. Battaglia, L. Forsyth, B. Parkin & T. Klein, Syngenta, Australia
M. Clarke & G. Robertson, Bayer CropScience
R. Correll, Rho Environmetrics Pty Ltd
J. Desbiolles, University of South Australia
P. Bogacki & A. McKay, South Australian Research and Development Institute (SARDI)

Article on the next generation of control options for Rhizoctonia solani (AG8), the causal agent of Rhizoctonia root rot: in-furrow liquid injection. The technology was tested over three years of trials conducted in Western Australia (WA) by the Department of Agriculture and Food, Western Australian (DAFWA) and in South Australia (SA) by the South Australian Research and Development Institut (SARDI) (e).

Geographic distribution and DNA-disease severity of different Rhizoctonia-species in wheat and corn in consideration of environmental factors and farming system
G. Thomsen, J.-A. Verreet, T. Birr, H. Klink
Institute of Phytopathology, Christian-Albrechts-University of Kiel, Germany

This presentation summarizes the PhD project of Dr. G. Thomsen. In this study with a focus on Germany and France, Rhizoctonia AG 2-2 IIIB and R. cerealis were the species most frequently detected in corn. Looking into possible factors influencing the occurrence of R. solani and R. cerealis revealed that monoculture increased the disease risk for AG2-2 IIB, whereas it had the lowest risk index for R. cerealis.
It was also observed, that after the cropping system the sand and content of a given field can increase the risk index for Rhizoctonia infections additionally.

Rhizoctonia survey US
Syngenta Crop Protection, Inc., United States

Syngenta-sponsored study maps Rhizoctonia groups in U.S. cereal regions and sheds new light on distribution and disease potential.

Solving the puzzle of a clever fungus: Rhizoctonia solani – an Australian Rhizoctonia solani AG8 sequencing project
University of Western Australia

Scientists from the CSIRO and University of Western Australia’s Institute of Agriculture (IOA) are looking into the genome of Rhizoctonia solani AG8 in order to better understand the host pathogen interaction mechanisms.

Canadian Rhizoctonia Survey
C. King, Top Crop Manager, Canada

A survey for the presence of Rhizoctonia species in 170 soybean, wheat, canola, barley and pea crops in Canada was completed during 2009-11. Rhizoctonia solani was recovered from plants from 53 (31%) of the 170 crops surveyed. A total of 191 isolates of R. solani were recovered belonging to anastomosis groups (AG) 2-1, 2-2, 4, and 5. Isolates belonging to AG 2-1 were virulent mainly on canola while isolates of other anastomosis groups tended to have wider host ranges. Soil from surveyed fields ranged in pH from 4.3 to 7.7 and fields with R. solani recovered ranged in pH from 4.3 to 7.5. Soil from surveyed fields ranged from 13 to 97% sand composition, and fields with R. solani recovered ranged from 27 to 97% sand.