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Aproveitamento De Fontes E Doses De Nitrogênio De Pela Cana-de-açúcar Irrigada Utilizando-se Técnica De Diluição Isotópica De 15n
| Content Provider | Semantic Scholar |
|---|---|
| Author | Silva, Nelmício Furtado Da Cunha, Fernando Nobre Teixeira, Marconi Batista Soares, Frederico Antônio Loureiro Silva, Edson Cabral Da Muraoka, Takashi |
| Copyright Year | 2017 |
| Abstract | From the hypothesis that the source and the dose of nitrogen fertilization influence the nitrogen utilization in the irrigated soil-sugarcane system, this study aimed to evaluate the nitrogen utilization of different doses of ammonium nitrate and urea by irrigated sugarcane in the cane-plant cycle, using a N isotopic dilution technic in a clayey dystrophic Red Latosol, Cerrado phase. The experiment was conducted at the Raízen Mill, located in the municipality of Jataí-GO, Brazil. The variety IACSP95-5000 was used in a randomized block design, analyzed in a 4 x 2 factorial, with three replicates. Treatments were four doses of N (30, 60, 120 and 180 kg ha); Two fertilizer sources marked with 15N isotope (urea and ammonium nitrate). Fertilizers labeled with N isotope were applied in a 1.0 m microparticle within the plots, containing 6.0 rows of 5.0 m, whose useful area were the two central lines. The irrigation was by sprinkling, performed by a central pivot. Was evaluated the variable nitrogen utilization of the mineral fertilizer, in %. The results were submitted to analysis of variance by the F test (p<0.05), regression analysis for N doses and Tukey test comparison (p<0.05) for N sources. Nitrogen was 62.39% (133.90 kg ha) for the ammonium nitrate source and 42.74% (110.18 kg ha) for urea. |
| File Format | PDF HTM / HTML |
| DOI | 10.7127/iv-inovagri-meeting-2017-res0570550 |
| Alternate Webpage(s) | http://www.inovagri.org/anais/TC0570550.pdf |
| Alternate Webpage(s) | https://doi.org/10.7127/iv-inovagri-meeting-2017-res0570550 |
| Language | English |
| Access Restriction | Open |
| Content Type | Text |
| Resource Type | Article |
