[Trials of commercial maize hybrids for whole chopped silage [Zea mays L. - field trials - Emilia Romagna - Friuli Venezia Giulia - Lombardy - Veneto]]

agronomic characters caratteri agronomici comminution conduite de la culture crop management crop yield desmenuzamiento emilia romagna ensayos de variedades environmental factors establecimiento de plantas facteur du milieu factores ambientales fattori ambientali field experimentation fitomejoramiento fragmentation frammentazione friuli venecia julia friuli venezia giulia gestione delle colture hybride hybrids ibridi industria de semillas industria delle sementi industrie des semences lombardia lombardie lombardy mais maize manejo del cultivo miglioramento genetico vegetale plant breeding plant establishment prove varietali rendement des cultures rendimiento de cultivos seed industry variety trials veneto zea mays