Reduction of Phialophora gregata inoculum through tillage
The reduction of the saprophytic activity of Phialophora gregata (EPPO A1 pest) by means of culture techniques in soybean production has been the objective of a research project in Wisconsin, US. Investigated were the influence of non-tillage and conventional tillage systems on the inoculum density of P. gregata in the field. It was found that a conventional tillage system significantly decreased the inoculum density of the pathogen. The authors believe that a reduction of the saprophytic population of the pathogen decreases its capability to overwinter and, therefore, results in a lower infection pressure during the next year.
Sources
Adee, E.A.; Grau, C.R. (1992) Influence of tillage method on inoculum density of Phialophora gregata in overwintering soybean residue.
Presentation at the 1992 APS/MPS Annual Meeting, Portland, OR, USA. Phytopathology 82, 1158.