Protection against South American leaf blight of rubber in Asia and the Pacific region. Volume II

analyse du risque asie et pacifique blight control de plagas enfermedades de las plantas enfermedades fungosas feuille fungal diseases hojas leaves lutte antiravageur maladie des plantes maladie fongique medidas fitosanitarias mesure phytosanitaire normas norme pest control phytosanitary measures plant diseases plant pests plant protection protection des plantes risk analysis rubber crops standards