Resumo

OJEDA, L; FURRAZOLA, E  e  HERNANDEZ, Consuelo. Response of Leucaena leucocephala cv. Peru to the application of different doses of agricultural MicoFert. Pastos y Forrajes [online]. 2015, vol.38, n.3, pp. 176-182. ISSN 2078-8452.

A study was conducted at the Livestock Production Enterprise El Tablón (Cumanayagua, Cienfuegos province, Cuba), in order to evaluate the effect exerted by the application of different doses of agricultural MicoFert on the dry matter (DM) production and the leaf phosphorus content in Leucaena leucocephala cv. Peru. The design was randomized blocks, with six treatments and three replications. The treatments were constituted by four doses of MicoFert (250, 500, 750 and 1 000 g m^-1), a variant at a rate of 25 kg of N ha^-1, and the control. The experiment lasted two years; four cuttings per year were made, with a frequency of 90 days, at a height of 25 cm over the soil. The application of agricultural MicoFert increased the DM yield between 13 and 40 %, proportionally to the applied doses, with regards to the control. The highest DM yield (18,44 t ha^-1) was obtained with the application of nitrogen, and significantly differed from the other treatments. The effect exerted by the inoculation with the biofertilizer on the leaf phosphorus content was evident, showing significant differences among the variants with MicoFert and the control. The colonization of rootlets by the arbuscular mycorrhizal fungi (AMF) was proportional to the increase of the biofertilizer doses, with values of 34, 38, 44 and 49 %, respectively. The fertilization with nitrogen and the control showed 28 and 26 % of mycorrhizal colonization, which indicated the presence of native AMF

Palavras-chave : Micorrizas arbusculares vesiculares; Leucaena leucocephala; Vesicular arbuscular mycorrhizae; Leucaena leucocephala.

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