TY  - EJOU
AU  - M, Gómez-Romero  
AU  - Barrera, E de la  
AU  - Villegas, J 
AU  - Lindig-Cisneros, R  

TI  - Fertilization and association with pioneer herbaceous species on the performance of <i>Pinus pseudostrobus</i>
T2  - Phyton-International Journal of Experimental Botany

PY  - 2013
VL  - 82
IS  - all
SN  - 1851-5657

AB  - 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.
KW  - <i>Lupinus</i>
KW  -  Erosion
KW  -  Understory
KW  -  Ecological restoration
KW  -  Phosphorus

DO  - 10.32604/phyton.2013.82.135