Biological control of Rhizoctonia root rot on wheat in the field

Stephen Barnett, Ross Ballard, Christopher Franco

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

Rhizoctonia root rot (RRR) caused by Rhizoctonia solani AG8 is a major root disease of cereals and other crops in dryland farming systems resulting in stunting of seedlings and reduced ability to access water and nutrients (1). RRR is difficult to control due to its wide host range and lack of resistant cultivars. New seed applied and in-furrow chemical treatments have recently been registered in Australia for RRR control on cereals and provide partial control (2).
RRR is known to be influenced by soil microbes and a program screening 2,310 microbes using an in planta pathosystem identified 43 strains with the ability to control RRR when applied to seeds (3). Further characterisation for survival on seed and storage, genetic stability, growth, fungicide compatibility, etc., identified 24 strains that appeared suitable for further development as seed inoculants. These strains were assessed in the field in a two-step process: firstly in 1 m replicated micro-plots to assess early season disease control on roots and then in larger 20m plots to assess disease control and yield.
Original languageEnglish
Title of host publicationProceedings of the 10th Australasian Soilborne Disease Symposium, 2018
EditorsV.V.S.R. Gupta, S. Barnett , S. Kroker
PublisherAustralasian Soilborne Disease Symposium
Pages69-70
Number of pages2
ISBN (Electronic)9780646993102
Publication statusPublished - 2018
Event10th Australasian Soilborne Disease Symposium. 2018. - Adelaide, Australia
Duration: 4 Sep 20188 Sep 2018
Conference number: 10

Conference

Conference10th Australasian Soilborne Disease Symposium. 2018.
Abbreviated titleASDS2018
Country/TerritoryAustralia
CityAdelaide
Period4/09/188/09/18

Keywords

  • Rhizoctonia
  • Rhizoctonia root rot (RRR)
  • Rhizoctonia solani AG8
  • dryland farming systems
  • wheat
  • soil microbes
  • disease control
  • biological control

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