Reduction of fertilizers and pesticides in potato cropping - a field study

agricultural chemicals agriculture biologique enfermedades fungosas escarda fertilizers fongicide fungicidas fungicides herbicidas herbicide herbicides integrated control lucha integrada mycose mycoses organic farming papa phytophthora phytophthora infestans pomme de terre potatoes produit agrochimique rhizoctonia rhizoctonia solani solanum tuberosum streptomyces streptomyces scabies weed control