CERZOS   05458
CENTRO DE RECURSOS NATURALES RENOVABLES DE LA ZONA SEMIARIDA
Unidad Ejecutora - UE
artículos
Título:
Weeping Lovegrass Yield and Nutritive Value Provides an Alternative to Beef Cattle Feeding in Semiarid Environments of Argentina
Autor/es:
LUCIANI G, .; SOBANSKI M, ; MEIER M, ; POLCI P, ; MIRANDA R ; V. ECHENIQUE
Revista:
CROP SCIENCE
Editorial:
CROP SCIENCE SOC AMER
Referencias:
Lugar: Baltimore; Año: 2012 p. 1955 - 1965
ISSN:
0011-183X
Resumen:
Weeping lovegrass [Eragrostis curvulaEragrostis curvula
(Schrad.) Nees] supports extensive beef cattle
operations in arid and semiarid environments
worldwide. This perennial grass is preferred
in low production areas of Argentina because
it has a high biomass production with minimal
management requirements. Therefore, we
evaluated yield and nutritional value of seven
different cultivars and accessions of weeping
lovegrass in a fi eld experiment during two
consecutive years (2008/2009 and 2009/2010).
Two tetraploid cultivars (Tanganyika and Morpa),
three hexaploid cultivars (Don Pablo, Don
Juan, and Don Eduardo), and two accessions
(UNST9355 and UNST9446) were included
in a complete randomized block design. To
evaluate yield and nutritional value, dry weight,
leaf length, crown diameter, crude protein, in
vitro dry matter digestibility (IVDMD), neutral
detergent fi ber, acid detergent fi ber, and lignin
were determined. Biomass and IVDMD data
indicated that hexaploid cultivars performed
better than tetraploid ones under limiting
environmental conditions observed throughout
the study. Therefore, we concluded that
breeding programs could select suitable parents
from hexaploid cultivars such as Don Pablo and
UNST9446 to be used in arid environments
while tetraploid cultivars such as Tanganyika
and Morpa could be used in environments with
less water restrictions.