Infected rice residues allowing long term survival of blast pathogen serve as major source of primary inoculum in high altitude upland ecology.

Raveloson H., Ratsimiala Ramonta I., Tharreau D., Sester M.
2017

Magnaporthe oryzae is the fungal plant pathogen that causes rice blast. The sources of primary inoculum and overwintering mode of the fungus remain largely unknown. The effect of rice residues on the onset of blast epidemics and the potential for survival of M. oryzae in the residues were studied in upland conditions in Madagascar. Blast disease was observed in a 3-year field experiment in three ...

Maladies des plantes; Culture des plantes