[Main causes of potato tuber superficial alterations]

colletotrichum coccodes defectos defects enfermedades de las plantas germination inhibitors helminthosporium solani inhibiteur de germination maladie des plantes mechanical damage meloidogyne plant diseases polyscytalum potato y potyvirus potyvirus y de la patata potyvirus y pomme de terre rhizoctonia solani solanina solanine solanum tuberosum spongospora streptomyces tubercule tubers