[Reduced doses of plant protection preparations in cereals]

application rates banco de semillas del suelo cereal crops cultivos de cereales dose d'application enfermedades fungosas escarda fungal diseases humid zones maladie fongique malezas mauvaise herbe noruega norway pathogens pesticide pesticides plaguicidas soil seed banks spraying stock semencier du sol tendance tendencias trends weed control weeds zone humide