Short-term effects of changes in soil management and nitrogen fertilizer application on 'Bramley's Seedling' apple trees. I. Effects on tree growth, yield and leaf nutrient composition

abonos nitrogenados absorption azote bore boro boron calcio calcium cobre copper cuivre feed grasses fosforo magnesio magnesium malus manejo del suelo metabolism metabolisme metabolismo mise en valeur du sol nitrogen nitrogen fertilizers phosphore phosphorus potasio potassium soil management