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| Natura: | Artículo científico |
| Lingua: | en |
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Academia Brasileira de Ciências
2007
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| Accesso online: | https://www.redalyc.org/articulo.oa?id=32779415 |
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| _version_ | 1866556819379322880 |
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| author | Tatiele A.B. Fenilli |
| author_facet | Tatiele A.B. Fenilli |
| contents | The 15N isotope to evaluate fertilizer nitrogen absorption efficiency by the coffee plant Tatiele A.B. Fenilli Paulo C.O. Trivelin Klaus Reichardt Osny O. S. Bacchi Durval Dourado-Neto Multidisciplinaria (Ciencias Naturales y Exactas) perennial crop experimental design replicate variability stable isotope methodology The use of the 15N label for agronomic research involving nitrogen (N) cycling and the fate of fertilizer-N is wellestablished, however, in the case of long term experimentation with perennial crops like citrus, coffee and rubber tree,there are still shortcomings mainly due to large plant size, sampling procedures, detection levels and interferences onthe system. This report tries to contribute methodologically to the design and development of 15N labeled fertilizerexperiments, using as an example a coffee crop fertilized with 15N labeled ammonium sulfate, which was followedfor two years. The N of the plant derived from the fertilizer was studied in the different parts of the coffee plant inorder to evaluate its distribution within the plant and the agronomic efficiency of the fertilizer application practice.An enrichment of the fertilizer-N of the order of 2% 15N abundance was sufficient to study N absorption rates and toestablish fertilizer-N balances after one and two years of coffee cropping. The main source of errors in the estimatedvalues lies in the inherent variability among field replicates and not in the measurements of N contents and 15Nenrichments of plant material by mass-spectrometry. 2007 artículo científico 0001-3765 https://www.redalyc.org/articulo.oa?id=32779415 en http://www.redalyc.org/revista.oa?id=327 Anais da Academia Brasileira de Ciências application/pdf Academia Brasileira de Ciências Anais da Academia Brasileira de Ciências (Brasil) Num.4 Vol.79 |
| format | Artículo científico |
| id | redalyc_32779415 |
| language | en |
| publishDate | 2007 |
| publisher | Academia Brasileira de Ciências |
| spellingShingle | The 15N isotope to evaluate fertilizer nitrogen absorption efficiency by the coffee plant Tatiele A.B. Fenilli Multidisciplinaria (Ciencias Naturales y Exactas) perennial crop experimental design replicate variability stable isotope methodology The 15N isotope to evaluate fertilizer nitrogen absorption efficiency by the coffee plant Tatiele A.B. Fenilli Paulo C.O. Trivelin Klaus Reichardt Osny O. S. Bacchi Durval Dourado-Neto Multidisciplinaria (Ciencias Naturales y Exactas) perennial crop experimental design replicate variability stable isotope methodology The use of the 15N label for agronomic research involving nitrogen (N) cycling and the fate of fertilizer-N is wellestablished, however, in the case of long term experimentation with perennial crops like citrus, coffee and rubber tree,there are still shortcomings mainly due to large plant size, sampling procedures, detection levels and interferences onthe system. This report tries to contribute methodologically to the design and development of 15N labeled fertilizerexperiments, using as an example a coffee crop fertilized with 15N labeled ammonium sulfate, which was followedfor two years. The N of the plant derived from the fertilizer was studied in the different parts of the coffee plant inorder to evaluate its distribution within the plant and the agronomic efficiency of the fertilizer application practice.An enrichment of the fertilizer-N of the order of 2% 15N abundance was sufficient to study N absorption rates and toestablish fertilizer-N balances after one and two years of coffee cropping. The main source of errors in the estimatedvalues lies in the inherent variability among field replicates and not in the measurements of N contents and 15Nenrichments of plant material by mass-spectrometry. 2007 artículo científico 0001-3765 https://www.redalyc.org/articulo.oa?id=32779415 en http://www.redalyc.org/revista.oa?id=327 Anais da Academia Brasileira de Ciências application/pdf Academia Brasileira de Ciências Anais da Academia Brasileira de Ciências (Brasil) Num.4 Vol.79 |
| title | The 15N isotope to evaluate fertilizer nitrogen absorption efficiency by the coffee plant |
| topic | Multidisciplinaria (Ciencias Naturales y Exactas) perennial crop experimental design replicate variability stable isotope methodology |
| url | https://www.redalyc.org/articulo.oa?id=32779415 |