SP Report, 25: Catch crops in winter cereals

absorption de substances nutritives azote barley catch cropping cebada centeno contenido de materia seca crop yield cultivo intermedio cultivos de invierno cultivos de primavera culture d'hiver culture de printemps danemark denmark dinamarca dry matter content festuca rubra hordeum vulgare lolium multiflorum lolium perenne nitrogen nutrient uptake orge rendement des cultures rendimiento de cultivos rye secale cereale seigle soil types spring crops trigo triticum type de sol wheats winter crops