Dry matter production and botanical composition of monocultures and mixtures of meadow fescue (Festuca pratensis Huds.) and timothy (Phleum pratense L.) in field experiments at three locations in northern Norway 1984-89

botanical composition clima climat climate coasts cold zones composition botanique contenido de materia seca costa crop yield cultivo mixto cultivo protegido culture sous abri dicotiledoneas dicotyledons dry matter content festuca pratensis hiver invierno location factors mixed cropping monocultivo monoculture noruega norway phleum pratense protected cultivation rendement des cultures rendimiento de cultivos winter zona fria zone froide