INVESTIGADORES
BENTIVEGNA Diego Javier
artículos
Título:
Plant growth and survival of five perennial grass genotypes exposed to various defoliation managments in arid Argentina
Autor/es:
TORRES Y.A.; BUSSO C.A.; MONTENEGRO O.A.; ITHURRART L; GIORGETTI H.D; RODRIGUEZ G.; BENTIVEGNA D.J.; BREVEDAN R; FERNÁNDEZ O.A.; MUJICA M.M.; BAIONI S; ENTIO J; FIORETTI M.N.; TUCAT G.
Revista:
GRASS AND FORAGE SCIENCE (PRINT)
Editorial:
WILEY-BLACKWELL PUBLISHING, INC
Referencias:
Lugar: Londres; Año: 2013
ISSN:
0142-5242
Resumen:
The field performance of the native Pappophorum vaginatum, the naturalized Eragrostis curvula, and various cultivars of the introduced Achnatherum hymenoides and Leymus cinereus were evaluated as potential forage resources in rangelands of arid Argentina during the warm-seasons of 2007/2008 and 2008/2009. Plants of these grass species, obtained from seeds, were transplanted to the field in 2006, when they were one-year-old. During the study years, there were two defoliation managements: plants of all study genotypes either remained undefoliated (controls) or were defoliated twice a year during spring at 5 cm stubble height. Despite tiller number being lower (p0.05) between defoliation managements by mid-spring, there were no differences (p>0.05) in dry weight production between defoliated and undefoliated plants in all genotypes at the end of the second growing season. Plants of one or more of the introduced genotypes showed a similar (p>0.05) or greater (p0.05) or greater (p 39%) genotypes at the end of the first or second growing seasons.