@Article{phyton.2013.82.135,
AUTHOR = {Gómez-Romero  M, E de la  Barrera, J Villegas, R  Lindig-Cisneros},
TITLE = {Fertilization and association with pioneer herbaceous species on the performance of <i>Pinus pseudostrobus</i>},
JOURNAL = {Phyton-International Journal of Experimental Botany},
VOLUME = {82},
YEAR = {2013},
NUMBER = {all},
PAGES = {135--143},
URL = {http://www.techscience.com/phyton/v82nall/37054},
ISSN = {1851-5657},
ABSTRACT = {When degradation is severe, as it is often the case on acrisols, it is necessary to test the effect of plant-plant interactions in their survival and growth. An experiment was conducted, with substrate from an eroded site (acrisols with gullies) in a shaded greenhouse (30% shade) to evaluate the effect of fertilization and the presence of pioneer herbaceous species in the performance of <i>Pinus pseudostrobus</i>. The pioneer species <i>Lupinus mexicanus</i> and <i>Tithonia tubiformis</i> were used in three experimental treatments and a control. To fertilize, KH<sub>2</sub>PO<sub>4</sub> was applied in four concentration levels. There were a total of 16 treatment combinations when considering both factors. Results showed significant differences (p≤0.01) among the treatments of presence of pioneer herbaceous species. The species that was more influential in pine performance was the legume <i>Lupinus mexicanus</i>; when it was present, the pines had a higher survival (98%) than pines under control conditions (78%), being the difference statistically significant. Fertilization had no effect neither in the survival nor the performance of <i>P. pseudostrobus</i>. These results suggest that in these soils, reestablishing biotic interactions is necessary for improving the performance of tree species.},
DOI = {10.32604/phyton.2013.82.135}
}