BOTANICAL COMPOSITION AND QUALITY OF RYEGRASS PASTURE ASSOCIETED WITH WINTER LEGUMES UNDER CONTINUOUS GRAZING CONDITION, IN THE SOUTHERN REGION OF PARANÁ
DOI:
https://doi.org/10.5380/rsa.v6i1.4590Keywords:
associação azevém-leguminosas, relação folha, colmo, composição botânica, teor de proteína, massa seca, Ryegrass and legumes association, leaf, stem ratio, protein content, dry matterAbstract
A ryegrass pasture (Lolium multiflorum Lam.) associated with winter legumes: red clover (Trifolium pratense L.), white clover (Trifolium repens L.) and birdsfoot trefoil (Lotus corniculatus L.), submitted to four levels of herbage allowance (HA), namelly 4; 8; 12 e 16 kg of dry matter (DM) 100 kg -1 of the liveweight (LW),was evaluated in a randomized complete block design with two replications. The trial was carried out in July until November 1995, at the Canguiri, Center of Experiment Station SCA - UFPR, at Pinhais, PR with the objective of determinate the effect of levels of herbage allowance above botanical composition and pasture quality. The put-and-take technique in a continuous grazing system with variable stocking rate was used. Pasture botanical composition was modified by differents HA. Reducing HA caused increase in the percentage of weed component in pasture. Forage quality and leaf-stem ratio were reduced when DM accumulation ha -1 increased. A gradual decrease of crude protein (CP) content occurred as the stage of development of ryegrass advanced, however, increasing the legumes participation, mainly white clover, since October, occurred a gradual increase in pasture CP.
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