MEADOW HERBAGES FORMATION ON OVERWETTED AREAS

Abstract

Data on cereal herbages resistance to overwetting on the reclaimed sites are presented. Researches were spent on sod-podsol gley (gleying continuous from depth of 20-30 cm) and sod-podsol gley-like sandy soils with spring stagnation of water. On sites with flooding duration more than two weeks (sod-podsol gley ground) the sowed species density for five years has decreased in 1,6-2,3 times, and on sites with flooding duration less than two weeks (sod-podsol gley-like ground) - in 1,3-2,3 times. Rootstock grasses - painted grass, brome beardless and tall bent grass, had appeared the steadiest species. They have been better adapted to spring overwetting and by fifth year of life occupied the leading position (40,5-78,9 % on weight) in herbages. Timothy grass was one of less steady species. By third year of a life its participation in herbages decreased in 2,5-4,0 times.