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vol.63 número2TOLERANCIA DEL TOMATE (Lycopersicon esculentum Mill.) A APLICACIONES POST TRASPLANTE DEL HERBICIDA HALOSULFURON-METILPRODUCCIÓN Y CALIDAD DE SEMILLAS EN CUATRO POACEAS. EFECTO DE CORTES CON DISTINTAS FRECUENCIAS Y EN DIVERSAS ETAPAS FENOLÓGICAS índice de autoresíndice de materiabúsqueda de artículos
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Agricultura Técnica

versión impresa ISSN 0365-2807

Resumen

CATRILEO S., Adrián; ROJAS G., Claudio  y  MATUS C., José. An evaluation of the production and quality of barley sown alone or combined with forage species for the production of silage. Agric. Téc. [online]. 2003, vol.63, n.2, pp.135-145. ISSN 0365-2807.  http://dx.doi.org/10.4067/S0365-28072003000200003.

During the 1999/2000 season, the productivity and quality of barley (Hordeum vulgare L.) sown alone or in association with forage species for silage was evaluated. The study was conducted in an Ultisol in the dryland of the IX Region at the Carillanca Regional Research Center of the National Agricultural Research Institute (INIA), 38º41’ S lat, 72º25’W long, 200 m.a.s.l. The treatments evaluated were: barley alone (T1); barley with red clover (Trifolium pratense) (T2); barley with rotational ryegrass (Lolium multiflorum) (T3); and barley in mixture with perennial ryegrass/white clover (Lolium perenne/Trifolium repens) (T4). The experimental design was a randomized complete block design, with three replicates, cutting each treatment at seven phenological stages of the barley crop. The height and DM content of the barley did not have significant differences (P < 0.05) due to effect of the treatments and phenological stages evaluated. Barley in association with the forage species did not increase DM production (P > 0.05) except at the anthesis and early milky stages of T3, which were higher than T1 and T2 by 36 and 30%, respectively. Crude protein, metabolizable energy and in vitro digestibility decreased with the increasing maturity of the association, although an influence of the species that accompanied the barley was not observed. Barley contributed between 80 and 100% of the total botanical composition. The optimal stage to cut barley to obtain silage with 70% digestibility was the early milk (T3) stage, reaching a production of 14.1 t DM ha-1, a metabolizable energy content of 2.43 Mcal ME kg-1 DM and 10.6 % crude protein, after approximately 113 growing days.

Palabras clave : barley silage; red clover; beef cattle; Hordeum vulgare L..

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