[Seasonal variation of macro and micro-nutrients, under different levels of fertilizing, in the cultivation of mandarine cv. Ellendale] | Variaci=n estacional de macro y micro nutrientes, bajo diferentes niveles de fertilizaci=n, en el cultivo de mandarina cv. Ellendale

abonos npk citrus reticulata crop yield engrais npk evaluation fertilisation fertilizer application magnesio magnesium npk fertilizers nutrientes nutrients oligoelementos peru rendement des cultures rendimiento de cultivos seasonal variation substance nutritive trace elements variedades varieties