The effect of basic soil cultivation on the yield and physical traits of winter wheat grain, cultivar Livia after various forecrop

cero-labranza chernozem chernozems costos costs crop yield cultivos de invierno cultivos de primavera culture d'hiver culture de printemps farm income grain granos grosseur des semences hordeum vulgare labranza peso poids rendement des cultures rendimiento de cultivos revenu de l'exploitation rotation culturale rotational cropping seed size spring crops tillage travail du sol triticum aestivum weight winter crops zea mays zero tillage