Orchardgrass dactylis glomerata cultivar pennlate and perennial ryegrass lolium perenne cultivar reveile with applied nitrogen and in mixtures with legumes 1. total dry matter and nitrogen yields

Sollenberger, L.E.; Templeton, W.C.J. ; Hill, R.R.Jr

Grass and Forage Science 39(3): 255-262

1984


ISSN/ISBN: 0142-5242
DOI: 10.1111/j.1365-2494.1984.tb01690.x
Accession: 006041370

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Abstract
High-yielding grass-legume mixtures play an important role in forage-animal systems but finding compatible and adapted species can sometimes be difficult. The productivity of perennial ryegrass and orchardgrass in pure stands with N and in mixtures with legumes was examined. Broadcast sowing were made on conventionally prepared seedbeds in Aug. 1979 and May 1980 on a Hagerstown silt loam soil (fine, mixed mesic Typic Hapludalf). When sown alone orchardgrass and perennial ryegrass received rates of N ranging from 0-448 kg ha-1 a-1. The grasses were also grown in mixtures with alfalfa cv. Arc, red clover cv. Arlington or birdsfoot trefoil cv. Viking [Medicago sativa, Trifolium pratense and Lotus corniculatus, respectively]. The same legumes were sown alone. Four legume seed rates were used in both the pure legume and mixed stands. Orchardgrass-N swards were more productive than ryegrass-N swards over 3 yr. More dry matter (DM) was harvested from pure stands of alfalfa and mixtures including alfalfa than from those of other legumes. In the Aug. sowing, herbage accumulation of trefoil was intermediate. More DM was harvested from red clover in that trial the 1st yr than from trefoil but thereafter clover stands deteriorated rapidly. Spring-sown clover persisted better and more DM was harvested from clover mixtures than from those of trefoil the first 2 yr. Dry matter and N harvested from perennial ryegrass-legume and orchardgrass-legume swards were not different, but N harvest from ryegrass mixtures tended to be greater. Sward productivity improved with increases in legume seeding rates. In terms of both DM and N harvested, legumes in mixtures replaced substantial amounts of N fertilizer. Alfalfa at the highest seed rate (18.2 kg ha-1) with the grasses (no N fertilizer) was as productive as the grasses with 200-450 kg N ha-1 annually. Values were 90-170 kg N ha-1 for red clover and 130-215 kg N ha-1 annually for birdsfoot trefoil.

Orchardgrass dactylis glomerata cultivar pennlate and perennial ryegrass lolium perenne cultivar reveile with applied nitrogen and in mixtures with legumes 1. total dry matter and nitrogen yields