[Quality of strawberry fruits in three cropping systems [Fragaria x ananassa Duch. - Emilia-Romagna]]

acide ascorbique acidez acidity acido ascorbico ascorbic acid calidad carbohydrate content color colore colour coltivazione di pieno campo coltura senza terra contenido de carbohidratos couleur cultivo al aire libre cultivo protegido cultivo sin tierra culture en plein air culture sans sol culture sous abri epoca di raccolta fragaria ananassa fragole fraise fresa genotype environment interaction harvesting date interazione genotipo-ambiente nitrate nitrates nitrati nitratos outdoor cropping protected cultivation quality rheological properties soilless culture strawberries teneur en glucides variedades varieties