Escudo de la República de Colombia
Sistema Nacional de Biliotecas - Repositorio Institucional Universidad Nacional de Colombia Biblioteca Digital - Repositorio Institucional UN Sistema Nacional de Bibliotecas UN

Differences in root distribution, nutrient acquisition and nutrient utilization by tropical forage species grown in degraded hillside soil conditions

Gómez Carabalí, Arnulfo and Madhusudana, Rao Idupulapati and Ricaute, Jaumer (2010) Differences in root distribution, nutrient acquisition and nutrient utilization by tropical forage species grown in degraded hillside soil conditions. Acta Agronómica; Vol. 59, núm. 2 (2010); 197-210 2323-0118 0120-2812 .

Texto completo

[img] Microsoft Word
69kB
[img]
Vista previa
PDF
178kB
[img] HTML
40kB
[img] HTML
40kB

URL oficial: http://revistas.unal.edu.co/index.php/acta_agronom...

Resumen

Low nutrient availability, especially phosphorus (P) and nitrogen (N) supply is the major limitation to forage production in acid infertile soils of the tropics. A field study was conducted at the farm 'La Esperanza' located in Mondomo, Department of Cauca, in the coffee growing zone of Colombia. The main objective was to determine differences in root distribution, nutrient (N, P, K, Ca, Mg and S) acquisition and nutrient utilization of one C4 forage grass (Brachiaria dictyoneura) and two C3 forage legumes (Arachis pintoi and Centrosema macrocarpum) grown under two fertilization levels, cultivated either in monoculture or in association and harvested at four different ages.There were no significant differences in root biomass among the grass and legumes and their combinations. The native vegetation had the lowest root biomass; while the introduced grass (B. dictyoneura) had the highest root length density among all materials at all depths and ages and the native vegetation had the highest specific root length. As expected, nutrient uptake increased with age and with high fertilization in all species. Centrosema macrocarpun had the highest N and Ca uptake among all plant materials tested. Uptake of P, K and Mg was greater in the grass B. dictyoneura than in the other plant species and combination planting at all ages. On the other hand, the grass had the lowest Ca uptake. The grass and its mixture with the legumes A. pintoi and C. macrocarpun had the highest S uptake. A highly significant (p

Tipo de documento:Artículo - Article
Palabras clave:Plant nutrition, nutrient uptake, Brachiaria dictyoneura, Centrosema macrocarpum, Arachis pintoi, hillside, Colombia; Nutrición de plantas absorción de nutrientes, Brachiaria dictyoneura, Centrosema macrocarpum, Arachis pintoi, suelos degradados.
Unidad administrativa:Revistas electrónicas UN > Acta Agronómica
Código ID:20193
Enviado por : Dirección Nacional de Bibliotecas STECNICO
Enviado el día :26 Junio 2014 13:56
Ultima modificación:18 Agosto 2014 14:57
Ultima modificación:18 Agosto 2014 14:57
Exportar:Clic aquí
Estadísticas:Clic aquí
Compartir:

Solamente administradores del repositorio: página de control del ítem

Vicerrectoría de Investigación: Número uno en investigación
Indexado por:
Indexado por Scholar Google WorldCat DRIVER Registry of Open Access Repositories OpenDOAR Metabiblioteca BDCOL OAIster Red de repositorios latinoamericanos DSpace BASE Open archives La referencia Colombiae Open Access Theses and Dissertations Tesis latinoamericanas CLACSO
Este sitio web se ve mejor en Firefox