Resumo

MENDOZA-PEDROZA, Sergio Iban et al. Tillering of Lolium perenne L. associated with Dactylis glomerata L. and Trifolium repens L. Ecosistemas y recur. agropecuarios [online]. 2019, vol.6, n.16, pp.57-64.  Epub 01-Out-2019. ISSN 2007-901X.  https://doi.org/10.19136/era.a6n16.1392.

The aim of this study was to evaluate the weight and appearance, death and survival rates of perennial ryegrass stems in monoculture and associated with orchard grass and white clover. The highest weight per stem in perennial ryegrass occurred in monoculture with 0.49 g stem−1 and lowest in the 20:40:40 association with 0.36 g stem−1. For orchard grass, the greatest weight was in the 70:20:10 association with 0.16 g stem−1. The highest ryegrass stem appearance and death rates occurred in ryegrass in monoculture (100:00:00) with 0.16 and 0.30 stems*100 stems day−1, respectively. The perennial ryegrass stem survival rate was higher in autumn and lower in summer with 0.87 and 0.76 stems*100 stems day−1, respectively. The stem appearance and death rates increased as the research progressed from 0.08 in autumn to 0.18 stems*100 stems day−1 in winter. Conversely, the survival in orchard grass decreased with time, being higher in autumn with 0.92 and lower in summer with 0.78 stems*100 stems day−1. Perennial ryegrass was the species with the highest stem mortality, being more affected when in monoculture.

Palavras-chave : Associations; structural; grasses; legume; morphological.

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