[Production costs of wheat crop (France)]

abonos cereal crops crop yield cultivos de cereales economic analysis engrais farm inputs fertilizers fongicide fungicidas fungicides herbicidas herbicide herbicides insecticidas insecticide insecticides insumos agricolas moyen de production agricole poitou charentes poitou-charentes production costs rendement des cultures rendimiento de cultivos seed semence semillas triticum aestivum