[Cereal crops. Results of research performed in 1994 [in Belgium]]

abonos nitrogenados belgique belgium cultivation cultivo cultivos de invierno cultivos de primavera culture d'hiver culture de printemps enfermedades fungosas ensayos de variedades fertilisation fertilizer application fongicide fungal diseases fungicidas fungicides hordeum vulgare maladie fongique nitrogen fertilizers pratique culturale secale cereale spring crops triticosecale triticum variety trials winter crops