Resumo

ENRIQUEZ-VELAZQUEZ, Olga; AGUILAR-AGUILAR, Rosenda; VALENCIA-CANTERO, Eduardo  e  VELAZQUEZ-BECERRA, Crisanto. Physicochemical and microbiological profile of three different forest soils and effect on Pinus devoniana Lindl. Growth. Polibotánica [online]. 2017, n.44, pp.109-118. ISSN 1405-2768.  https://doi.org/10.18387/polibotanica.44.8.

The pines (Pinus spp.) are a group of trees cataloged as the first genus in distribution and species diversity. The high bioclimatic variability of these forests can modulate and differentiate plant development. In forest ecosystems, microbial communities are dependent on substrate and seasonality, they can vary from one point to another. For this reason, in this work, the objective was known the physicochemical and microbiological characteristics of three different forest soils on the growth of Pinus devoniana L. under in vitro conditions. We used seeds and soil from three different pine forests, for germination and development to 45 days of age. The physiological profile of use carbon source in microbial communities’ soil was analyzed by Biolog EcoPlates. The results exposed acidic pH for the three soils studied (5.06 to 5.97 UPH). In addition, phosphorus was found in limited quantities (˂0.5 mg kg-1) in soil from Pátzcuaro and Cherán. However, the physiological profile of soil displayed different in three sites with clear influence in root architecture, concluding that these soil factors modified differentially the root length and weight, but without influencing the aerial part development in P. devoniana L.

Palavras-chave : soil forest; nutrients; microbial communities.