Sustainability of perennial grasses under long-term use in the conditions of drained lands of the Non-Chernozem zone (Russia)

Recently, much attention has been paid by grassland farmers to the problem of extending the productive longevity of grasslands of the pasture type. Field studies were carried out on the agropolygon of FGBNU VNIIMZ in the period from 2012 to 2018. The object of research was pasture grass stands created on the basis of pasture ryegrass ( Loliurn perenne ) and intergenital hybrid festulolium (× Festulolium F. Aschers. Et Graebn ). Two, three, and four species of grass mixtures with various leguminous and cereal herbs were studied in the experiment. The types and varieties of herbs were selected taking into account their potential productivity and sustainable longevity in the conditions of drained soils. Ryegrass grazing VIC 66, festulolium VIC 90, alfalfa changeable ( Medicago varia ) Nakhodka, lotus horned ( Lotus cornilatus ) Sun, creeping clover ( Trifolium repens ) VIC 70, red fescue ( Festuca rubra ) Sigma, red clover ( Trifolium pratense ) VIC 7, timothy grass ( Phleum pratense L...