[Plant protection in rape. Experiences and recommendations from Schleswig-Holstein]

automne autumn brassica napus control de plagas date de traitement enfermedades de las plantas fecha de tratamiento fongicide fungicidas fungicides lutte antiravageur maladie des plantes pest control plant diseases plant growth substances plant protection primavera printemps protection des plantes schleswig-holstein sleswig-holstein spring sustancias de crecimiento vegetal treatment date