Root Growth of Quercus crassifolia, Q. crassipes and Fraxinus uhdei in Two Different Soil Types

Identifier3.57566

TypeArticle

Date created2000

AbstractSeedlings of selected tree species were grown in small benchtop rhizotrons filled with fine- and coarse- textured soils representing 2 different urban edaphic condi- tions in Mexico City. Bulk density was significantly higher and porosity was significantly lower in the coarse-textured soil. The maximum depth of root penetration visible be- hind the glass was significantly greater in the fine-textured soil for each of the 3 species after 5 months. Roots of Fraxinus uhdei penetrated deeper than roots of both Quercus crassipes and Q. crassifolia in both soils. Fraxinus uhdei root and shoot dry weight were significantly reduced in coarse- textured soil compared to the fine-textured soil, but both Quercus species were unaffected by soil type. In the fine- textured soil, F. uhdei root and shoot dry weight was signifi- cantly greater than both Quercus species, but not in the coarse-textured soil. At the end of the study, F. uhdei grow- ing in fine-textured soil were taller than F. uhdei growing in coarse-textured soil and taller than both Quercus species in both soils, though the difference took 6 weeks longer to develop in the coarse-textured soil.

Volume, Page Number20, 30-37

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