[Survey on field experiments 1998, C: Spring crops]

avena sativa control de enfermedades crop yield cultivos de grano cultivos de primavera culture de printemps danemark denmark dinamarca disease control fertilisation fertilizer application field experimentation grain crops hordeum vulgare malezas mauvaise herbe paille paja pests of plants plagas de plantas ravageur des plantes rendement des cultures rendimiento de cultivos spring crops straw triticum aestivum variedades varieties weeds