[Cultivation and experimentation of sugar beet 1995]

arrachage arrancado beta vulgaris cleaning control de enfermedades control de plagas cosecha crecimiento croissance danemark denmark dinamarca disease control ensayos de variedades escarda fertilisation fertilizer application field experimentation fosse germinability growth harvesting hoyos lifting limpieza lutte antiravageur mulch mulches nettoyage pest control pits poder germinativo spraying variety trials weed control