Repositorio Institucional
Repositorio Institucional
CONICET Digital
  • Inicio
  • EXPLORAR
    • AUTORES
    • DISCIPLINAS
    • COMUNIDADES
  • Estadísticas
  • Novedades
    • Noticias
    • Boletines
  • Ayuda
    • General
    • Datos de investigación
  • Acerca de
    • CONICET Digital
    • Equipo
    • Red Federal
  • Contacto
JavaScript is disabled for your browser. Some features of this site may not work without it.
  • INFORMACIÓN GENERAL
  • RESUMEN
  • ESTADISTICAS
 
Artículo

Effects of deferred forage as winter cover on spring growth of the tropical grasses Chloris gayana and Panicum coloratum

Título: Efectos del forraje diferido como cobertura de invierno en el crecimiento primaveral de las gramíneas tropicales Chloris gayana y Panicum coloratum
Imaz, José Augusto; Merani, Víctor; Dos Santos, Daniel AndrésIcon ; Benvenutti, Marcelo; Gimenez, Daniel Oscar; Hernandez, Olegario; Arroquy, Jose IgnacioIcon
Fecha de publicación: 01/2017
Editorial: Centro Internacional de Agricultura Tropical
Revista: Tropical Grasslands-Forrajes Tropicales
ISSN: 2346-3775
e-ISSN: 2346-3775
Idioma: Inglés
Tipo de recurso: Artículo publicado
Clasificación temática:
Ciencias de las Plantas, Botánica

Resumen

This pot study assessed the effects of deferring forage during autumn and leaving as winter cover on reducing cold damage to plants of 2 tropical (C4) grasses (Chloris gayana and Panicum coloratum) in a temperate environment in La Plata, Buenos Aires, Argentina. Mature plants were subjected to the following treatments: (i) autumn-deferred forage retained (DF) as control; and (ii) autumn-deferred forage removed (DFR) cutting at 15 cm from soil level at beginning of winter. This experiment had 10 replicates per treatment and 1 plant per pot (experimental unit). Plants of both species were extracted from a commercial beef farm and transplanted into an experimental garden in pots where they grew outdoors from 2 February to 23 May (111 days) when treatments were applied. After winter, both grasses were cut to 15 cm in early spring (27 September) and spring growth was measured in November. Shoot biomass was harvested at ground level and separated into lower and upper layers (above and below 15 cm), leaf blades, sheaths and stolons. Daily air temperature, relative humidity and frost events were registered. Allometric analysis of shoot biomass was performed to determine the stress incidence by cold. DF plants achieved 55-80% higher shoot biomass than DFR plants during spring in both species. The allometric analysis revealed for P. coloratum significant relationships between shoot biomass from plant compartments (lower and upper layers, leaf blade and sheath) and total shoot biomass in both treatments, indicating good cold tolerance. However, for C. gayana, unlike DF plants, DFR plants were strongly stressed, showing a lack of shoot biomass fit. These results suggest that deferring autumn forage growth and retaining as winter cover may improve survival during winter and productivity during spring of these two tropical grasses in temperate pastoral systems. However, the study needs to be repeated under field conditions and under grazing or cutting over a number of years in different situations to verify these preliminary results.
Palabras clave: Cold Damage , Frost Protection , Pasture Management , Winter Cover
Ver el registro completo
 
Archivos asociados
Thumbnail
 
Tamaño: 713.2Kb
Formato: PDF
.
Descargar
Licencia
info:eu-repo/semantics/openAccess Excepto donde se diga explícitamente, este item se publica bajo la siguiente descripción: Creative Commons Attribution-NonCommercial-ShareAlike 2.5 Unported (CC BY-NC-SA 2.5)
Identificadores
URI: http://hdl.handle.net/11336/64807
DOI: http://dx.doi.org/10.17138/TGFT(5)29-39
URL: http://www.tropicalgrasslands.info/index.php/tgft/article/view/320
Colecciones
Articulos(IBN)
Articulos de INSTITUTO DE BIODIVERSIDAD NEOTROPICAL
Citación
Imaz, José Augusto; Merani, Víctor; Dos Santos, Daniel Andrés; Benvenutti, Marcelo; Gimenez, Daniel Oscar; et al.; Effects of deferred forage as winter cover on spring growth of the tropical grasses Chloris gayana and Panicum coloratum; Centro Internacional de Agricultura Tropical; Tropical Grasslands-Forrajes Tropicales; 5; 1; 1-2017; 29-39
Compartir
Altmétricas
 

Enviar por e-mail
Separar cada destinatario (hasta 5) con punto y coma.
  • Facebook
  • X Conicet Digital
  • Instagram
  • YouTube
  • Sound Cloud
  • LinkedIn

Los contenidos del CONICET están licenciados bajo Creative Commons Reconocimiento 2.5 Argentina License

https://www.conicet.gov.ar/ - CONICET

Inicio

Explorar

  • Autores
  • Disciplinas
  • Comunidades

Estadísticas

Novedades

  • Noticias
  • Boletines

Ayuda

Acerca de

  • CONICET Digital
  • Equipo
  • Red Federal

Contacto

Godoy Cruz 2290 (C1425FQB) CABA – República Argentina – Tel: +5411 4899-5400 repositorio@conicet.gov.ar
TÉRMINOS Y CONDICIONES