Predicting green leaf proportion in ungrazed kleingrass (Panicum coloratum L.) in the semiarid Pampas Region of Argentina

Green leaf proportion is an important factor affecting nutritive value, ingestive behavior and forage intake. Determination of green leaf proportion by hand separation of plant samples is time consuming and expensive. The aim of this work was to establish whether a stable relationship exists between...

Descripción completa

Guardado en:

Detalles Bibliográficos
Autores principales:	Ferri,Carlos M, Molas,M. Lia
Lenguaje:	English
Publicado:	Instituto de Investigaciones Agropecuarias, INIA 2013
Materias:	Green leaf leaf:stem ratio total harvestable forage
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392013000200017
Etiquetas:	Agregar Etiqueta Sin Etiquetas, Sea el primero en etiquetar este registro!

id	oai:scielo:S0718-58392013000200017
record_format	dspace
spelling	oai:scielo:S0718-583920130002000172018-10-01Predicting green leaf proportion in ungrazed kleingrass (Panicum coloratum L.) in the semiarid Pampas Region of ArgentinaFerri,Carlos MMolas,M. Lia Green leaf leaf:stem ratio total harvestable forage Green leaf proportion is an important factor affecting nutritive value, ingestive behavior and forage intake. Determination of green leaf proportion by hand separation of plant samples is time consuming and expensive. The aim of this work was to establish whether a stable relationship exists between the proportion of green leaf blade and total mass of harvestable forage in ungrazed kleingrass (Panicum coloratum L.) cv. Verde. The study was carried out during four consecutive growing seasons in an established pasture of kleingrass. During two growing seasons, 90 kg N ha-1 was applied. Forage samples were collected at biweekly intervals and separated into leaf blades, stems (inclusive of leaf sheaths), and senescent material. Regression analysis indicated a consistent relationship (y = 0.70x-0.41, R² = 0.84, P< 0.001, n = 180) between the proportion of green leaf blade and total mass of harvestable forage in ungrazed kleingrass, even under varying environmental conditions of rainfall and N availability. Thus, total harvestable forage might be used to predict the green leaf proportion of kleingrass in contrasting environments, and used as an easy-to-measure indicator of green leaf proportion that would permit a balance of forage quality and quantity in kleingrass.info:eu-repo/semantics/openAccessInstituto de Investigaciones Agropecuarias, INIAChilean journal of agricultural research v.73 n.2 20132013-06-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392013000200017en10.4067/S0718-58392013000200017
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Green leaf leaf:stem ratio total harvestable forage
spellingShingle	Green leaf leaf:stem ratio total harvestable forage Ferri,Carlos M Molas,M. Lia Predicting green leaf proportion in ungrazed kleingrass (Panicum coloratum L.) in the semiarid Pampas Region of Argentina
description	Green leaf proportion is an important factor affecting nutritive value, ingestive behavior and forage intake. Determination of green leaf proportion by hand separation of plant samples is time consuming and expensive. The aim of this work was to establish whether a stable relationship exists between the proportion of green leaf blade and total mass of harvestable forage in ungrazed kleingrass (Panicum coloratum L.) cv. Verde. The study was carried out during four consecutive growing seasons in an established pasture of kleingrass. During two growing seasons, 90 kg N ha-1 was applied. Forage samples were collected at biweekly intervals and separated into leaf blades, stems (inclusive of leaf sheaths), and senescent material. Regression analysis indicated a consistent relationship (y = 0.70x-0.41, R² = 0.84, P< 0.001, n = 180) between the proportion of green leaf blade and total mass of harvestable forage in ungrazed kleingrass, even under varying environmental conditions of rainfall and N availability. Thus, total harvestable forage might be used to predict the green leaf proportion of kleingrass in contrasting environments, and used as an easy-to-measure indicator of green leaf proportion that would permit a balance of forage quality and quantity in kleingrass.
author	Ferri,Carlos M Molas,M. Lia
author_facet	Ferri,Carlos M Molas,M. Lia
author_sort	Ferri,Carlos M
title	Predicting green leaf proportion in ungrazed kleingrass (Panicum coloratum L.) in the semiarid Pampas Region of Argentina
title_short	Predicting green leaf proportion in ungrazed kleingrass (Panicum coloratum L.) in the semiarid Pampas Region of Argentina
title_full	Predicting green leaf proportion in ungrazed kleingrass (Panicum coloratum L.) in the semiarid Pampas Region of Argentina
title_fullStr	Predicting green leaf proportion in ungrazed kleingrass (Panicum coloratum L.) in the semiarid Pampas Region of Argentina
title_full_unstemmed	Predicting green leaf proportion in ungrazed kleingrass (Panicum coloratum L.) in the semiarid Pampas Region of Argentina
title_sort	predicting green leaf proportion in ungrazed kleingrass (panicum coloratum l.) in the semiarid pampas region of argentina
publisher	Instituto de Investigaciones Agropecuarias, INIA
publishDate	2013
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392013000200017
work_keys_str_mv	AT ferricarlosm predictinggreenleafproportioninungrazedkleingrasspanicumcoloratumlinthesemiaridpampasregionofargentina AT molasmlia predictinggreenleafproportioninungrazedkleingrasspanicumcoloratumlinthesemiaridpampasregionofargentina
_version_	1714205324107317248

Predicting green leaf proportion in ungrazed kleingrass (Panicum coloratum L.) in the semiarid Pampas Region of Argentina

Ejemplares similares