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| Registros recuperados : 13 | |
| 5. |  | TORRES, J. D.; ESPINDULA, M. C.; ARAÚJO, L. F. B. de; MARCOLAN, A. L.; ROCHA, R. B. Grain yield of coffee plants fertilized with different doses of 20-00-20 NPK formulation under rainfed conditions. Revista Caatinga, Mossoró, v. 34, n. 2, p. 486-493, abr./jun. 2021.| Biblioteca(s): Embrapa Rondônia. |
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| 9. | | ALVES, V. F.; ARAÚJO, L. F. B. de; ESPINDULA, M. C.; ROCHA, R. B.; TEIXEIRA, A. L.; DEPOLO, R. P. Produtividade de cultivares clonais de café em condições de sequeiro. In: ENCONTRO DE INICIAÇÃO À PESQUISA DA EMBRAPA RONDÔNIA, 12.; ENCONTRO DE PÓS-GRADUAÇÃO, 7., 2022, Porto Velho. Anais... Porto Velho: Embrapa Rondônia, 2022. p. 25.| Biblioteca(s): Embrapa Rondônia. |
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| 10. | | ARAÚJO, L. F. B. de; ESPINDULA, M. C.; ROCHA, R. B.; TORRES, J. D.; CAMPANHARO, M.; PEGO, W. F. O.; ROSA, S. E. de S. Genetic divergence based on leaf vegetative and anatomical traits of Coffea canephora clones. Semina: Ciências Agrárias, Londrina, v. 42, n. 5, p. 2717-2734, set./out. 2021.| Biblioteca(s): Embrapa Rondônia. |
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| 12. | | BEZERRA, S. B. de O.; ESPINDULA, M. C.; COSTA, R. S. C. da; ARAÚJO, L. F. B. de; CAMPANHARO, M.; LOURENÇO, J. L. R. Produtividade de cafeeiros cultivados em sistema agroflorestal com bandarra. In: ENCONTRO DE INICIAÇÃO À PESQUISA DA EMBRAPA RONDÔNIA, 12.; ENCONTRO DE PÓS-GRADUAÇÃO, 7., 2022, Porto Velho. Anais... Porto Velho: Embrapa Rondônia, 2022. p. 24.| Biblioteca(s): Embrapa Rondônia. |
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| 13. | | ESPINDULA, M. C.; ARAÚJO, L. F. B. de; DIOCLECIANO, J. M.; ROCHA, R. B.; KOLLN, A. M.; BOTELHO, F. J. E.; VERDIN FILHO, A. C.; VOLPI, P. S.; DIAS, J. R. M.; GIURIATTO JÚNIOR, J. J. T. Jardim clonal vertical: Manejo simplificado para a produção de estacas de Coffea canephora. Porto Velho, RO: Embrapa Rondônia, 2023. 25 P. (Embrapa Roraima. Comunicado Técnico, 422). ODS-2| Biblioteca(s): Embrapa Milho e Sorgo; Embrapa Rondônia. |
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| Registros recuperados : 13 | |
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Registro Completo
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Biblioteca(s): |
Embrapa Rondônia. |
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Data corrente: |
05/01/2021 |
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Data da última atualização: |
16/12/2021 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
A - 2 |
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Autoria: |
ESPINDULA, M. C.; RODOVALHO, G. M.; MARCOLAN, A. L.; BARBERENA, I. M.; CIPRIANI, H. N.; ARAÚJO, L. F. B. de. |
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Afiliação: |
MARCELO CURITIBA ESPINDULA, CPAF-RO; Giovana Menoncin Rodovalho, Programa de Pós-Graduação em Ciências Ambientais, Universidade Federal de Rondônia; ALAERTO LUIZ MARCOLAN, CPAF-RO; Iara Magalhães Barberena, Programa de Pós-Graduação em Ciências Ambientais, Universidade Federal de Rondônia; HENRIQUE NERY CIPRIANI, CPAF-RO; Larissa Fatarelli Bento de Araújo, Programa de Pós-Graduação em Ciências Ambientais, Universidade Federal de Rondônia. |
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Título: |
Ammonia loss from protected urea in soil under different irrigation depths. |
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Ano de publicação: |
2021 |
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Fonte/Imprenta: |
Acta Scientiarum, v. 43, e46764, 2021. |
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ISSN: |
1807-8621 (Online) |
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DOI: |
10.4025/actasciagron.v43i1.46764 |
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Idioma: |
Inglês |
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Conteúdo: |
This study presents an evaluation of the viability of using protected urea under different irrigation depths to reduce nitrogen losses caused by the volatilization of ammonia (NH3) under the conditions of the Southwestern Amazon. The study was carried out at the Experimental Station of Embrapa Rondônia, in the municipality of Porto Velho, Rondônia State, Brazil. The experiment was conducted in a Red-Yellow Latosol and arranged in a 5 x 6 factorial design consisting of a combination of five treatments (N sources) with six irrigation depths. The sources of N were as follows: 1) urea (45.5% N); 2) urea (44.3% N) + 0.15% copper and 0.4% boron; 3) urea (45% N) + NBPT; 4) urea (43% N) + sulfur (1%); and 5) control (without N). The irrigation depths were 0, 5, 10, 15, 20, and 25 mm. The results showed that, regardless of the use of urease inhibitors, an irrigation depth of 10 mm is suitable for incorporating urea into the soil and stabilizing N losses from NH3 volatilization. NBPT is the most efficient inhibitor under nonirrigated conditions. All N sources promote increases in the concentrations of nitric and ammonia nitrogen in the soil. In the first 15 days after fertilizer application, the highest concentrations of ammonium were in the 0 - 10 cm and 10 - 20 cm soil layers, and NBPT showed the highest ammonium content compared to that of the other sources in the 0 - 10 cm layer. The nitric nitrogen content in the soil was slightly influenced by the irrigation depth in the first 15 days after fertilizer application. However, the ammonia nitrogen content decreased exponentially with the increase in irrigation depth due to the movement of ammonia in the soil. MenosThis study presents an evaluation of the viability of using protected urea under different irrigation depths to reduce nitrogen losses caused by the volatilization of ammonia (NH3) under the conditions of the Southwestern Amazon. The study was carried out at the Experimental Station of Embrapa Rondônia, in the municipality of Porto Velho, Rondônia State, Brazil. The experiment was conducted in a Red-Yellow Latosol and arranged in a 5 x 6 factorial design consisting of a combination of five treatments (N sources) with six irrigation depths. The sources of N were as follows: 1) urea (45.5% N); 2) urea (44.3% N) + 0.15% copper and 0.4% boron; 3) urea (45% N) + NBPT; 4) urea (43% N) + sulfur (1%); and 5) control (without N). The irrigation depths were 0, 5, 10, 15, 20, and 25 mm. The results showed that, regardless of the use of urease inhibitors, an irrigation depth of 10 mm is suitable for incorporating urea into the soil and stabilizing N losses from NH3 volatilization. NBPT is the most efficient inhibitor under nonirrigated conditions. All N sources promote increases in the concentrations of nitric and ammonia nitrogen in the soil. In the first 15 days after fertilizer application, the highest concentrations of ammonium were in the 0 - 10 cm and 10 - 20 cm soil layers, and NBPT showed the highest ammonium content compared to that of the other sources in the 0 - 10 cm layer. The nitric nitrogen content in the soil was slightly influenced by the irrigation depth in the first 1... Mostrar Tudo |
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Palavras-Chave: |
Amazônia Ocidental; Embrapa Rondônia; Irrigation depths; Latossolo Vermelho-Amarelo; Porto Velho (RO); Protected urea; Red-Yellow Latosol; Rondônia; South Western Amazon; Uréia protegida; Volatilização. |
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Thesagro: |
Amônia; Campo Experimental; Irrigação; Nitrogênio; Perda; Uréia. |
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Thesaurus NAL: |
Ammonium nitrogen; Demonstration farms; Urease inhibitors; Volatilization. |
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Categoria do assunto: |
F Plantas e Produtos de Origem Vegetal |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/219891/1/cpafro-18499.pdf
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Marc: |
LEADER 02969naa a2200457 a 4500
001 2128979
005 2021-12-16
008 2021 bl uuuu u00u1 u #d
022 $a1807-8621 (Online)
024 7 $a10.4025/actasciagron.v43i1.46764$2DOI
100 1 $aESPINDULA, M. C.
245 $aAmmonia loss from protected urea in soil under different irrigation depths.$h[electronic resource]
260 $c2021
520 $aThis study presents an evaluation of the viability of using protected urea under different irrigation depths to reduce nitrogen losses caused by the volatilization of ammonia (NH3) under the conditions of the Southwestern Amazon. The study was carried out at the Experimental Station of Embrapa Rondônia, in the municipality of Porto Velho, Rondônia State, Brazil. The experiment was conducted in a Red-Yellow Latosol and arranged in a 5 x 6 factorial design consisting of a combination of five treatments (N sources) with six irrigation depths. The sources of N were as follows: 1) urea (45.5% N); 2) urea (44.3% N) + 0.15% copper and 0.4% boron; 3) urea (45% N) + NBPT; 4) urea (43% N) + sulfur (1%); and 5) control (without N). The irrigation depths were 0, 5, 10, 15, 20, and 25 mm. The results showed that, regardless of the use of urease inhibitors, an irrigation depth of 10 mm is suitable for incorporating urea into the soil and stabilizing N losses from NH3 volatilization. NBPT is the most efficient inhibitor under nonirrigated conditions. All N sources promote increases in the concentrations of nitric and ammonia nitrogen in the soil. In the first 15 days after fertilizer application, the highest concentrations of ammonium were in the 0 - 10 cm and 10 - 20 cm soil layers, and NBPT showed the highest ammonium content compared to that of the other sources in the 0 - 10 cm layer. The nitric nitrogen content in the soil was slightly influenced by the irrigation depth in the first 15 days after fertilizer application. However, the ammonia nitrogen content decreased exponentially with the increase in irrigation depth due to the movement of ammonia in the soil.
650 $aAmmonium nitrogen
650 $aDemonstration farms
650 $aUrease inhibitors
650 $aVolatilization
650 $aAmônia
650 $aCampo Experimental
650 $aIrrigação
650 $aNitrogênio
650 $aPerda
650 $aUréia
653 $aAmazônia Ocidental
653 $aEmbrapa Rondônia
653 $aIrrigation depths
653 $aLatossolo Vermelho-Amarelo
653 $aPorto Velho (RO)
653 $aProtected urea
653 $aRed-Yellow Latosol
653 $aRondônia
653 $aSouth Western Amazon
653 $aUréia protegida
653 $aVolatilização
700 1 $aRODOVALHO, G. M.
700 1 $aMARCOLAN, A. L.
700 1 $aBARBERENA, I. M.
700 1 $aCIPRIANI, H. N.
700 1 $aARAÚJO, L. F. B. de
773 $tActa Scientiarum$gv. 43, e46764, 2021.
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