MORPHOGENESIS OF Trachypogon vestitus UNDER BURNING EFFECT, DURING DRY SEASON, IN RORAIMA’S SAVANNAS
The effects of plant regrowth age (21, 28, 35, 42, 49, 56, 63 and 70 days) on dry matter (DM) yield, and morphogenetic and structural characteristics of Trachypogon vestitus, submitted to burning, during dry season, were evaluated under natural field conditions. The experimental design was completel...
| Autores: | , , |
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| Tipo de recurso: | artículo |
| Estado: | Versión publicada |
| Fecha de publicación: | 2012 |
| País: | Brasil |
| Institución: | Universidade Federal de Goiás (UFG) |
| Repositorio: | Ciência animal brasileira (Online) |
| Idioma: | portugués |
| OAI Identifier: | oai:ojs.revistas.ufg.br:article/12803 |
| Acceso en línea: | https://revistas.ufg.br/vet/article/view/12803 |
| Access Level: | acceso abierto |
| Palabra clave: | Forrage Forragicultura |
| Sumario: | The effects of plant regrowth age (21, 28, 35, 42, 49, 56, 63 and 70 days) on dry matter (DM) yield, and morphogenetic and structural characteristics of Trachypogon vestitus, submitted to burning, during dry season, were evaluated under natural field conditions. The experimental design was completely randomized, with three replications. Evaluations were carried out during the period from December 2009 to February 2010. DM yields, absolute growth rate, number of tillers/plant (NTP), number of leafs/plant (NLP), leaf area, leaf senescence and elongation rates and blade length (BL) increased consistently with growth stage (P<.05). The relations among DM yield, forage production rate, NTP, NLP and BL with plants regrowth age were described by the quadratic regression model and the maximum values were estimated at 64.8; 42.3; 59.6; 61,8 and 59.4 days of regrowth, respectively. The crop growth and relative growth rates, tiller and leaf appearance rates were inversely proportional to plant age.KEYWORDS: dry matter; leaves; morphogenesis; plant age; tillering. |
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