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| Barrientos,Leticia; Higuera,Marcelo; Acuña,Hernán; Guerrero,Jaime; Ortega,Fernando; Seguel,Ivette. |
| La lotera destaca en nuestro medio con un interesante potencial agrícola, por su capacidad fijadora de nitrógeno atmosférico y valioso aporte a los sistemas agropecuarios de bajos insumos. En este estudio se trabajó con las especies más utilizadas en el país, Lotus corniculatus L. o lotera de hoja ancha, Lotus glaber o lotera de hoja angosta, y Lotus uliginosus o alfalfa chilota. Con el objetivo de determinar la capacidad de fijar nitrógeno y evaluar en forma comparativa la eficiencia de la fijación simbiótica de distintas cepas, se realizó un ensayo bajo condiciones controladas con 68 cepas naturalizadas de Mesorhizobium loti y Bradyrhizobium sp. (Lotus). Para ello se utilizaron tubos con solución nutritiva (agarizada) de Norris y Date, sin nitrógeno. Las... |
| Tipo: Journal article |
Palavras-chave: Eficiencia de fijación de nitrógeno; Cepas de rizobios. |
| Ano: 2002 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0365-28072002000200005 |
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| Acuña,Hernán; Concha,Alex; Figueroa,Marcos. |
| Condensed tannins (CT) present in Lotus spp., depending on their concentration in the plant, can prevent bloating and improve protein absorption in ruminants. With the objective to know the variability of this characteristic, the CT concentration (% dry matter basis) was determined by the butanol-HCl procedure in 13 cultivars of Lotus corniculatus L. (Lc) introduced from North and South America and Oceania, 11 accessions of Lotus tenuis Waldst. & Kit. ex Willd. (Lt), and 22 accessions of Lotus uliginosus Schkuhr (Lu) collected in Chile, from 32° to 38° S and 36° to 46° S, respectively. The field experiments, with two randomized complete blocks, were established in autumn 1998, in five different environments in the central-southern zone of Chile... |
| Tipo: Journal article |
Palavras-chave: Condensed tannins. |
| Ano: 2008 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392008000100004 |
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| Castillo,Carolina; Acuña,Hernán; Zagal,Erick; Inostroza,Luis. |
| The response to P and water deficiencies of forage Lotus species has not been sufficiently studied in the Andisol and Vertisol soil orders in Chile's marginal areas. A pot experiment under cover was carried out between October 2007 and March 2008 to study the effects of P and soil water availability (SWA) on DM production, P absorption, and P use efficiency in Lotus spp. The experiment included three Lotus (L. corniculatus L., L. tenuis Waldst. & Kit. ex Willd., and L. uliginosus Schkuhr) species, two soils (Andisol and Vertisol), two contrasting P levels (low and high), and two SWA levels (10% and 100%). A completely randomized design with a 3 x 2 x 2 x 2 factorial arrangement with four replicates was used. Accumulated shoot and root DM, P... |
| Tipo: Journal article |
Palavras-chave: Lotus spp.; Volcanic soils; Clay soils; Mycorrhizal colonization. |
| Ano: 2013 |
URL: http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392013000100005 |
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