Productivity of orchard grass (Dactylis glomerata L.) alone and associated with perennial ryegrass (Lolium perenne L.) and white clover (Trifolium repens L.)

Abstract

-The objective of this research was to evaluate the productive capacity of orchard grass alone and associated with perennial ryegrass and white clover sown at different proportions. Treatments consisted of the following associations and monoculture: 100-00-00, 70-20-10, 50-00-50, 40-40-20, 40-20-40, 20-70-10, 20-40-40, and 00-50-50% of orchard grass, perennial ryegrass, and white clover, respectively. The eight treatments were randomly distributed into 24 experimental plots of 9 × 8 m according to a completely randomized block design with three replicates. On average, the associations that had the highest herbage yield in two years were 40-20-40, 20-70-10, and 20-40-40 with 21038, 20709, and 20073 kg DM ha −1 , respectively, and the lowest herbage yield was registered by monoculture with 12793 kg DM ha −1 . The associations with higher herbage yield exceeded that of monoculture by about 61%. Independently of the association, in summer, the highest percentage was found to be orchard grass and in winter, it was white clover, while perennial ryegrass had the lowest percentage throughout the study. The associations of grasses and legumes have higher herbage yield when compared with the monoculture of orchard grass. The legume has a better behaviour when it is associated with perennial ryegrass and worse with orchard grass.

Adaptación de mezclas forrajeras a diferentes niveles de enmienda y riego en Nariño, Colombia

“…La MS fue superior para la mezcla 1. En un experimento similar (Maldonado-Peralta et al, 2017), se reportó un contenido de MS para la época de verano de 4815 kg MS ha -1 La incidencia de plagas para la mayoría de los tratamientos fue baja, sin embargo, el tratamiento que no presentó daño alguno por esta variable fue el conformado por la combinación del pasto Trojan + sin riego + 2 t CaMg(CO 3 ) 2 ha -1 . Las semillas procedentes de Nueva Zelanda generalmente traen incorporado el hongo endófito (Neotyphodium occultans), el cual le confiere a las plantas resistencia contra el ataque de insectos plaga y tolerancia al estrés abiótico (Cuesta-Muñoz et al, 2006;Keren, 2017).…”

“…En un experimento realizado en Montecillo, Texcoco, México a una altura de 2240 msnm con 636 mm de precipitación anual se encontró que la mezcla de raigrás y trébol en verano presentó un rendimiento de MS de 4964 kg ha -1 (Maldonado-Peralta et al, 2017), lo que difiere a lo reportado en este estudio donde la mezcla 3 tuvo un rendimiento de 3399 kg ha -1 , debido a la baja cantidad de precipitaciones presentadas en esta localidad (86,45 mm).…”

Diversification of Intensively Used Grassland: Resilience and Good Fodder Quality across Different Soil Types

“…The dominance of the species also reduced the complementarity of the mix. The lower proportions of legumes in the GD swards are likely attributable to the strong growth of D. glomerata as there was only little light available for the smaller species like Trifolium repens that quickly filled the open gaps in the other swards [56,57]. The open soil left can become a risk for weed invasion.…”