Plant population dynamics of Arachis pintoi CIAT 17434 associated to native grasses, under grazing, in the humid tropic of Mexico
The objectives were to identify the survival resources of Arachis pintoi associated to native grasses under grazing. The experiment was performed in the north-central region of Veracruz State, Mexico, from March 2001 to March 2002. Two and a half ha of an associated pasture were used, with a stocking rate (animal units/ha) of 3.2 in the rainy season and two for the remaining of the year, with one day of grazing and 20 d of resting. Flowering, soil seed reserve, stolon density, and plant and seedling survival were evaluated. Analyses of variance and regression procedures were performed as well as the fitting of curves that best described data behavior. June 2001 showed the highest flowering value (851 flowers/m2), while the minimal value occurred on January 2002 (3 flowers/m2). Soil seed reserves on three assessments were of 1,671, 1,388 and 3,029 kg/ha, respectively. Stolon density (stolons/m2) showed an initial downward trend, followed by an increase from September 2001 to March 2002. Mortality of seedlings was higher (more than 40 %) during the first two weeks. It can be concluded that drought and winter affected flowering, while trampling increased plant mortality, however, these effects were counteracted by seed soil reserve and high stolon density.
| Main Authors: | , , , |
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| Format: | Digital revista |
| Language: | spa |
| Published: |
Instituto Nacional de Investigaciones Forestales, Agrícolas y Pecuarias
2012
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| Online Access: | https://cienciaspecuarias.inifap.gob.mx/index.php/Pecuarias/article/view/1373 |
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