Influence of raised beds, plant density, and fertigation on yield and quality of strawberry (Fragaria x ananassa Duch.)

abri plastique calidad cubrimiento del suelo cultivation cultivo espacement espaciamiento fertigation fertilisation fertilizer application flaveur flavour fragaria fraise fresa irrigation fertilisante mulching paillage phytophthora fragariae plastic film covers pratique culturale quality rendement rendimiento sabor spacing strawberries variedades varieties yields