[Variety-trial with lettuce for autumn cultivation in outdoor growing]

automne autumn calidad cosecha crop yield cultivation cultivo cultivo al aire libre culture en plein air disease resistance ensayos de variedades falscher mehltau harvesting infection lactuca sativa laitue lechugas lettuces mildews mildiou oidium mildiu outdoor cropping plant habit podredumbres port de la plante pourriture pratique culturale quality rendement des cultures rendimiento de cultivos resistencia a la enfermedad rots saison seasons statistical methods variety trials