INVESTIGADORES
JOBBAGY GAMPEL Esteban Gabriel
artículos
Título:
Limits to recruitment of tall fescue plants in poplar silvopastoral systems of the Pampas, Argentina
Autor/es:
CLAVIJO, MP; CORNAGLIA, PS; GUNDEL, PE; NORDENSTAHL, M; JOBBAGY, EG
Revista:
AGROFORESTRY SYSTEMS
Editorial:
SPRINGER
Referencias:
Año: 2010 vol. 80 p. 275 - 282
ISSN:
0167-4366
Resumen:
Abstract Forage production in silvopastoral
systems of the Flooding Pampa is based on cool
season grasses with a relatively asynchronous phenology
regarding their accompanying deciduous trees.
However, the productivity of cool season grasses in
these systems is usually low. The hypothesis of this
work is that the low productivity of cool season grasses
is caused by tree litter constraining plant recruitment.
Emergence and establishment (reproductive propagation),
and tillering (vegetative propagation) patterns of
tall fescue, a cool season grass in the region, were
studied in two pairs of adjacent non-afforested and
afforested poplar stands (tree age 2628 years, tree
density 453797 plants ha-1). Observational and
manipulative (i.e. addition of seeds, leaf litter
removal) experiments indicated that the recruitment
of tall fescue plants is strongly limited by the fall of
poplar leaves over emerged seedlings, during autumn.
Results suggest that any management practice capable
of removing poplar litter, either through grazing or
machinery, could neutralize this limitation enhancing
the herbaceous primary production of the system.
manipulative (i.e. addition of seeds, leaf litter
removal) experiments indicated that the recruitment
of tall fescue plants is strongly limited by the fall of
poplar leaves over emerged seedlings, during autumn.
Results suggest that any management practice capable
of removing poplar litter, either through grazing or
machinery, could neutralize this limitation enhancing
the herbaceous primary production of the system.
systems of the Flooding Pampa is based on cool
season grasses with a relatively asynchronous phenology
regarding their accompanying deciduous trees.
However, the productivity of cool season grasses in
these systems is usually low. The hypothesis of this
work is that the low productivity of cool season grasses
is caused by tree litter constraining plant recruitment.
Emergence and establishment (reproductive propagation),
and tillering (vegetative propagation) patterns of
tall fescue, a cool season grass in the region, were
studied in two pairs of adjacent non-afforested and
afforested poplar stands (tree age 2628 years, tree
density 453797 plants ha-1). Observational and
manipulative (i.e. addition of seeds, leaf litter
removal) experiments indicated that the recruitment
of tall fescue plants is strongly limited by the fall of
poplar leaves over emerged seedlings, during autumn.
Results suggest that any management practice capable
of removing poplar litter, either through grazing or
machinery, could neutralize this limitation enhancing
the herbaceous primary production of the system.
manipulative (i.e. addition of seeds, leaf litter
removal) experiments indicated that the recruitment
of tall fescue plants is strongly limited by the fall of
poplar leaves over emerged seedlings, during autumn.
Results suggest that any management practice capable
of removing poplar litter, either through grazing or
machinery, could neutralize this limitation enhancing
the herbaceous primary production of the system.
Forage production in silvopastoral
systems of the Flooding Pampa is based on cool
season grasses with a relatively asynchronous phenology
regarding their accompanying deciduous trees.
However, the productivity of cool season grasses in
these systems is usually low. The hypothesis of this
work is that the low productivity of cool season grasses
is caused by tree litter constraining plant recruitment.
Emergence and establishment (reproductive propagation),
and tillering (vegetative propagation) patterns of
tall fescue, a cool season grass in the region, were
studied in two pairs of adjacent non-afforested and
afforested poplar stands (tree age 2628 years, tree
density 453797 plants ha-1). Observational and
manipulative (i.e. addition of seeds, leaf litter
removal) experiments indicated that the recruitment
of tall fescue plants is strongly limited by the fall of
poplar leaves over emerged seedlings, during autumn.
Results suggest that any management practice capable
of removing poplar litter, either through grazing or
machinery, could neutralize this limitation enhancing
the herbaceous primary production of the system.
manipulative (i.e. addition of seeds, leaf litter
removal) experiments indicated that the recruitment
of tall fescue plants is strongly limited by the fall of
poplar leaves over emerged seedlings, during autumn.
Results suggest that any management practice capable
of removing poplar litter, either through grazing or
machinery, could neutralize this limitation enhancing
the herbaceous primary production of the system.
-1). Observational and
manipulative (i.e. addition of seeds, leaf litter
removal) experiments indicated that the recruitment
of tall fescue plants is strongly limited by the fall of
poplar leaves over emerged seedlings, during autumn.
Results suggest that any management practice capable
of removing poplar litter, either through grazing or
machinery, could neutralize this limitation enhancing
the herbaceous primary production of the system.