Rhizoctonia solani in potatoes. [Field trials with different soil temperatures, cultivation controls and soil infection levels]

calidad conduite de la culture control cultural crop management crop yield cultural control damage enfermedades fungosas etapas de desarrollo de la planta experimentation fungal diseases infection lesiones lesions lutte culturale maladie fongique manejo del cultivo papa papa de siembra plant de pomme de terre plant developmental stages pomme de terre potatoes quality rendement des cultures rendimiento de cultivos rhizoctonia solani seed potatoes soil soil temperature sol solanum tuberosum suelo temperatura del suelo thanatephorus cucumeris tubercule tubers