Abstract

ROJAS GARCIA, Adelaido Rafael et al. Persistence of Dactylis glomerata L. alone and associated with Lolium perenne L. and Trifolium repens L. Rev. Mex. Cienc. Agríc [online]. 2016, vol.7, n.4, pp.885-895. ISSN 2007-0934.

Seven associations were evaluated, two grasses and legume planted in different proportions and a monoculture (orchard grass). The research was conducted from september 2012 to september 2014 in the Graduate College, Campus Montecillo, Mexico. The restriction to the legume was 10 and 50% minimum and maximum, respectively. Treatments consisted of the following associations: 20-40-40, 00-50- 50, 40-20-40, 50-00-50, 20-70-10, 70-20-10,100-00-00, 40-40-20% of skein (Ov), ryegrass (Ba) and white clover (Tr), respectively. The treatments were randomized in 24 experimental plots of 9 and 8 m, according to a design of a randomized complete block with three replications. Associations that presented the highest growth rate in two years were; 20-70-10, 20-40-40 and 40-20-40 with an average of 57 kg MS ha-1 d-1, and the lowest growth rate monoculture skein (100-00-00) with 32 kg MS ha-1 d-1 (p< 0.05). The association obtained the highest plant population (m-2) during the two years was the monoculture skein skein with 32 plants m-2 and lower: 21 and 15 plants m-2 with 40- 40-20 and associations 20-40-40, respectively (p< 0.05). On average the first year of intercepted radiation found 87% decline in the second year by 84%. All associations contributed the highest growth rate compared with monoculture skein; moreover, there is a close relationship with the growth rate and intercepted radiation.

Keywords : Dactylis glomerata L.; Lolium perenne L.; Trifolium repens L.; growth rate; intercepted radiation.

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