Abstract

AGUIRRE-MEDINA, Juan F. et al. Growth of Cedrela odorata L. Biofertilized with Rhizophagus intraradices and Azospirillum brasilense under nursery conditions. Rev. Chapingo ser. cienc. for. ambient [online]. 2014, vol.20, n.3, pp.177-183. ISSN 2007-4018.  https://doi.org/10.5154/r.rchscfa.2014.01.001.

Cedrela odorata L. is a species distinguished by the quality of its wood. Cedar established in the field must adapt to changes in resource availability; survival is greater when the root system is associated with microorganisms that improve nutrition and growth. The aim of this study was to evaluate the effect of Rhizophagus intraradices and Azospirillum brasilense on the growth of C. odorata and its nitrogen (N) and phosphorus (P) uptake capacity. Cedar seeds were sown in pots in accordance with the following treatments: control, 15_N-15_P-15_K fertilization, R. intraradices, A. brasilense, R. intraradices + A. brasilense, and R. intraradices + A. brasilense + A. brasilense + 15_N-15_P-15_K fertilization. Morphological and physiological yield variables and root colonization were recorded every 28 days, and N and P contents at the end of the experiment (140 days). In general, R. intraradices promoted greater plant growth (P ≤ 0.05) of morphological and physiological yield components. The maximum height (97 cm) was recorded in plants with R. intraradices + A. brasilense + 15_N-15_P-15_K fertilization, representing 40 % more height than the control. N and P increased with the inoculation of the microorganisms alone and combined.

Keywords : Yield components; nitrogen; phosphorous; mycorrhizal colonization.

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