[Determination of fertilizer application rates to sugar beet based on plant analyses]

beta vulgaris crop yield cultivos de invierno culture d'hiver disponibilidad de nutrientes essai exigence des plantes fertilisation fertilizer application necesidades de las plantas nutrient availability nutrition des plantes nutritive value plant nutrition plant requirements pruebas rendement des cultures rendimiento de cultivos saccharose sucrosa sucrose trials triticum aestivum valeur nutritive valor nutritivo winter crops