Results of state variety trials [with wheat in Czech and Slovak Federal Republic]

agronomia agronomie agronomy calidad cantidad de semilla requerida climat au sein d'une culture crop climate cultivo intercalado cultivos de invierno culture d'hiver culture intercalaire date de semis ensayo environmental effects essai fecha de siembra fitoclima germination grain granos intercropping paja de trigo plant growth substances pruebas quality resistance to injurious factors seeding rates sowing date testage testing trials triticum aestivum variedades varieties wheat straw winter crops