Productivity of perennial self regenerating phytocoenoses in cultivated pastures.

摘要

A range of mixed crops for use in cultivated pastures in Russia is suggested. The individual crops used were Dactylis glomerata VIK 61, Festuca pratensis VIK 5, Phleum pratense VIK 9, Alopecurus pratensis cv. Serebristyi, Poa pratensis cvs. Priekulaeskii, Pobeda and Tambovets, Trifolium pratense cv. Tetraploidnyi VIK and Trifolium repens cv. Yubileinyi. The crops were cultivated in 1994-2003 in Non-chernozem areas of Russia. Fertilizer input used was P60K130. Data on productivity, fodder units and crude protein yield are tabulated. The highest productivity (6.09 t/ha of dry weight) and income to expenses ratio (134%) were achieved using a mixed crop of Trifolium repens (2 kg/ha) + Festuca pratensis (5 kg/ha) + Poa pratensis (2 kg/ha).