Downy mildew on peas (Peronospora viciae f sp pisi)

chemical control ciclo vital disease resistance enfermedades fungosas fongicide fungal diseases fungicidas fungicides genetic variation hortalizas (plantas) infection life cycle lutte chimique maladie fongique peronospora peronospora viciae pisum sativum recubrimiento de semillas resistencia a la enfermedad seed dressing symptome symptoms traitement phytosanitaire semences vegetable crops