Evaluación biológica de la fertilidad de un suelo desarrollado sobre arenisca cuarzosa, tratado con carbón vegetal, cal y nutrientes en San Francisco - El Pangui
Biologically evaluated availability of N, P, K, Mg, S, Fe, Mn, B, Zn and Cu in the layer 00 to 25 cm twelve soil treatments after eight months of being treated with charcoal, lime and nutrients in an experiment with two tree species pachaco (Schizolobium parahybum) and arabisco (Jacaranda copaia) in...
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| Formato: | bachelorThesis |
| Idioma: | spa |
| Publicado em: |
2013
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| Acesso em linha: | http://dspace.unl.edu.ec/jspui/handle/123456789/11382 |
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Adicionar Tag | Resumo: | Biologically evaluated availability of N, P, K, Mg, S, Fe, Mn, B, Zn and Cu in the layer 00 to 25 cm twelve soil treatments after eight months of being treated with charcoal, lime and nutrients in an experiment with two tree species pachaco (Schizolobium parahybum) and arabisco (Jacaranda copaia) in San Francisco Alto, canton The Pangui province of Zamora Chinchipe, by missing element technique in the greenhouse, using as indicator plant tomato (Solanum lycopersicum). The indicator plant height was measured up to 50 days and dry biomass was determined. The plant nutrient solutions lacking one element of the soils of the twelve treatments had lower development in relation to the corresponding complete nutrient solution. The N, B, K and P were found to be deficient elements in the soils of all treatments in the experiment of San Francisco (even in those who had applied N, P and K), with proportions of biomass ratios N, B, K and P in relation to the complete solution: 7.6:1, 7.2:1, 2.1:1, and 2.0:1, respectively; the Zn, Fe, Mg, Mn and Cu, were not deficient; sulfur showed an medium level. The N no significant correlation (r = 0.21) between the weight of the dry matter of the biological evaluation with the nutrient concentration of the chemical analysis from the extraction solution modified Olsen; while phosphorus expressed a strong correlation (r = 0.88), the K, Mg and Zn showed a moderate correlation (r = 0.63, 0.52 and 0.49, respectively), and finally the correlations for Fe, Mn and Cu were negative, in the order of -0.73, -0.62 and -0.59. Using the Modified Olsen extracting solution should be revised in the case of laboratory tests available elements in soils of southern Ecuadorian Amazon. |
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