Effects of temperature and moisture on the number, size and septation of ascospores produced by Leptosphaeria maculans (blackleg) on rapeseed stubble

agua brassica campestris brassica napus champignon contenido de humedad crop residues eau environmental factors facteur du milieu factores ambientales freezing fungi hongos leptosphaeria maculans moisture content pathogens residuos de cosechas saskatchewan sporulation temperatura temperature teneur en eau water