[Results with comparative trials with packed seed [sugar beet] with class of 3,5-4,75 mm gage and with seeding elements at mechanical distribution]

beta vulgaris caratteristiche dell'attrezzatura defectos defects difetti enrobage des semences ensemencement equipment characteristics equipment performance grosseur des semences prestazioni dell'attrezzatura prove rendimiento de la maquinaria seed seed pelleting seed size seme semence semillas semina seminatrici semoir siembra sowing trial methods