[Changes in productivity of vegetable crop rotation and of fertility of leached chernozem as dependent on application of organic and mineral fertilizers. Note 2. Effect of peat and mineral fertilizers on productivity of crop rotation, on change of structural composition, on water -physical and agrochemical properties of soil]

agua del suelo chernozem chernozems chimie du sol crop yield eau du sol engrais npk estructura del suelo fertilidad del suelo fertilizantes npk hortalizas (plantas) npk fertilizers peat rendement des cultures rendimiento de cultivos soil chemistry soil fertility soil structure soil water structure du sol tourbe turba vegetable crops