Influence of glyphosate herbicide treatment of couch grass on take-all caused by Gaeumannomyces graminis var. tritici with the addition of soil-borne microorganisms

Points out couch grass rhizomes harbour Gaeumannomyces graminis var. tritici (Ggt), which causes take-all wheat. Notes glyphosate used after cereal harvest to control couch can increase take-all in subsequent wheat crops. Reports following glyphosate treatment, the colonisation of senescing couch rhizomes by Ggt when treated with endophytic fungus Microdochium bolleyi, and the spread of Ggt from senescing couch rhizomes to wheat when treated with rhizobacterium Pseudomonas fluorescens, were investigated in two separate experiments. Source: National Library of New Zealand Te Puna Matauranga o Aotearoa, licensed by the Department of Internal Affairs for re-use under the Creative Commons Attribution 3.0 New Zealand Licence.