Root rot in cereals (Pt.1)

abonos verdes barley cebada champignon cobertura con paja condiciones ambientales condition de milieu cultivar cultivars disease resistance engrais vert ensemencement environmental conditions fongicide fungi fungicidas fungicides fusarium green manures helminthosporium limpia de rastrojos orge paillis podredumbres pourriture pseudocercosporella resistencia a la enfermedad rhizoctonia rotational cropping rots siembra sowing straw mulches stubble cleaning timing trigo de invierno winter wheat