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| 23. |  | FREITAS, J. R.; MARTINS, F. C. G.; FERNANDES, O. R.; SAITO, S. M. T.; RISCHEL, A. P.; GONÇALVES, A. N. Aplicacao de matéria organica, vermiculita e inoculacao de Rhizobium spp. em sementeira de Erythrina falcata. IPEF, Piracicaba, n.20, p.101-113, 1980| Biblioteca(s): Embrapa Florestas. |
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| 24. | | RIBEIRO, A. M. A. de S.; ANDRADE NETO, R. de C.; OLIVEIRA, M. S. de; FREITAS, C. I. A. de; FREITAS, J. R.; LESSA, L. S. Avaliação de porta-enxertos em combinação com copas comerciais de laranjeiras em Rio Branco, Acre. In: CONGRESSO BRASILEIRO DE FRUTICULTURA, 22., 2012, Bento Gonçalves. Anais... Bento Gonçalves: SBF, 2012. p. 2794-2797.| Biblioteca(s): Embrapa Acre. |
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| 25. | | SHIGAKI, F.; VERAS, L. M.; SIQUEIRA, E. T. de J.; FREITAS, J. R. B.; COSTA, M. K. L.; CARVALHO, C. G. P.; PEREIRA, M. G. Sunflower Genotype Selection for Oil Production in the Pre-Amazon Region of Brazil Journal of Agricultural Science, v. 11, n. 8, p. 248-256, 2019.| Biblioteca(s): Embrapa Soja. |
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| 26. | | ANDRADE NETO, R. de C.; RIBEIRO, A. M. A. de S.; FREITAS, C. I. A. de; LESSA, L. S.; ALECIO, M. R.; FREITAS, J. R. de. Desenvolvimento da laranjeira "Pêra" em função de portaenxertos nas condições de Capixaba, Acre. In: CONGRESSO BRASILEIRO DE FRUTICULTURA, 22., 2012, Bento Gonçalves. Anais... Bento Gonçalves: SBF, 2012. p. 3240-3244.| Biblioteca(s): Embrapa Acre. |
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| 29. | | MALAVOLTA, E.; PAULETO, E. A.; CAMPELLO JUNIOR, J. H.; FREITAS, J. R.; CAVALCANTI, L. F.; LIVA, M. L.; FIORE, M. F.; PRIMAVESI, O. M. A. S. P. R.; FONSECA, S. M.; CABRAL, C. P. Estudos sobre a nutrição mineral do arroz. XVIII- Efeito das deficiências de macro e mincronutrientes e da toxidez de alumínio, cloro e manganês na morfologia, crescimento, produção e composição mineral das variedades IAC-164 e IAC-165 cultivadas em solução nutritiva. In: REUNIÃO ANUAL DA ESCOLA SUPERIOR DE AGRICULTURA "Luiz de Queiroz", 39., 1982, Piracicaba. Anais... Piracicaba: ESALQ, 1982. p. 815-850.| Biblioteca(s): Embrapa Pecuária Sudeste. |
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| 30. | | SILVA, R. A. da; SILVA, W. R. da; SOUZA FILHO, M. F. de; FREITAS, J. R. da S.; SILVA, R. V. F. da; JORDÃO, A. L.; MACEDO, F. P. de; OLIVEIRA, L. M. S. F. S. de. Registro de hospedeiro de Anastrepha sororcula Zucchi (Diptera: Tephritidae) na Amazônia brasileira. In: CONGRESSO BRASILEIRO DE ENTOMOLOGIA, 21., 2006, Recife. Resumos... Recife: Universidade Federal Rural de Pernambuco: SEB, 2006.| Biblioteca(s): Embrapa Amapá. |
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Registro Completo
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Biblioteca(s): |
Embrapa Gado de Corte. |
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Data corrente: |
12/12/2022 |
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Data da última atualização: |
14/12/2022 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
A - 1 |
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Autoria: |
EUCLIDES, V. P. B.; MONTAGNER, D. B.; ARAUJO, A. R. de; PEREIRA, M. de A.; DIFANTE, G. dos S.; ARAÚJO, I. M. M. de; BARBOSA, L. F.; BARBOSA, R. A.; GURGEL, A. L. C. |
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Afiliação: |
VALERIA PACHECO BATISTA EUCLIDES, CNPGC; DENISE BAPTAGLIN MONTAGNER, CNPGC; ALEXANDRE ROMEIRO DE ARAUJO, CNPGC; MARIANA DE ARAGAO PEREIRA, CNPGC; GELSON DOS SANTOS DIFANTE, UNIVERSIDSDE FEDERAL DE MATO GROSSO DO SUL; ITÂNIA MARIA MEDEIROS DE ARAÚJO, UNIVERSIDADE FEDERAL DE MATO GROSSO DO SUL; LEANDRO FRANCISCO BARBOSA, UNIVERSIDADE FEDERAL DA GRANDE DOURADOS; RODRIGO AMORIM BARBOSA, CNPGC; ANTONIO LEANDRO CHAVES GURGEL, UNIVERSIDADE FEDERAL DE MATO GROSSO DO SUL. |
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Título: |
Biological and economic responses to increasing nitrogen rates in Mombaça guinea grass pastures. |
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Ano de publicação: |
2022 |
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Fonte/Imprenta: |
Scientific Reports, v. 12, article 1937, 2022. |
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DOI: |
https://doi.org/10.1038/s41598-022-05796-6 |
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Idioma: |
Inglês |
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Conteúdo: |
Nitrogen fertilization has been recognized as an essential tool towards the establishment of sustainable intensification of pasture-based livestock systems using tropical perennial grasses if, for a given ecosystem it is capable of increasing forage growth, stocking rates and animal performance. This study assessed pasture growth traits, nutritive value, animal and economic responses of Panicum maximum cv. Mombaça guinea grass pastures subjected to different levels of N fertilization (100 (N100), 200 (N200), and 300 (N300) kg N ha-¹ yr-¹). Pastures were managed under rotational stocking to maintain similar pre (80-90 cm) and post-grazing (45 cm) canopy heights. A partial budget and a Benefit-Cost Analysis were used to assess the economic returns on increasing N fertilization. N300 resulted in greater post-grazing herbage mass. A slightly higher neutral fiber and acid lignin detergent was observed at N100 (P < 0.05); crude protein increased linearly, and in vitro digestible organic matter reached maximum value at 265.4 kg N ha-¹ yr-¹. Annual averages of animal weight gain were 515, 590 and 660 g d-¹, respectively, for N100, N200 and N300. There was a decrease from 3.7 to 1.9 kg of body weight gain per kg of additional N applied when increasing N rates from 100 to 200 and from 100 to 300 kg ha-¹. The net profit improved with increasing N levels, but at reducing rates, reaching its maximum at the N300 level. The change from 100 to 200 kg N ha-¹ presented the best return, with USD 3.73 for each additional dollar invested, while the change from 200 kg N ha-¹ to 300 kg N ha-¹ was economically less than optimal, recouping only USD 1.60 for each dollar. The N300 rate presented the highest net profit per hectare (accounting profit), even in a pessimist scenario (25% reduction in production). Despite being profitable, the N300 rate was less than optimal from an economic standpoint, since an additional 100 kg of Nitrogen ha-¹ to change from N200 to N300 level reduced both the net returns and the Benefit-Cost ratio. Our results suggest that the economically optimal level of N fertilization for Mombaça guinea grass pasture should be between 200 and 300 kg ha-¹. MenosNitrogen fertilization has been recognized as an essential tool towards the establishment of sustainable intensification of pasture-based livestock systems using tropical perennial grasses if, for a given ecosystem it is capable of increasing forage growth, stocking rates and animal performance. This study assessed pasture growth traits, nutritive value, animal and economic responses of Panicum maximum cv. Mombaça guinea grass pastures subjected to different levels of N fertilization (100 (N100), 200 (N200), and 300 (N300) kg N ha-¹ yr-¹). Pastures were managed under rotational stocking to maintain similar pre (80-90 cm) and post-grazing (45 cm) canopy heights. A partial budget and a Benefit-Cost Analysis were used to assess the economic returns on increasing N fertilization. N300 resulted in greater post-grazing herbage mass. A slightly higher neutral fiber and acid lignin detergent was observed at N100 (P < 0.05); crude protein increased linearly, and in vitro digestible organic matter reached maximum value at 265.4 kg N ha-¹ yr-¹. Annual averages of animal weight gain were 515, 590 and 660 g d-¹, respectively, for N100, N200 and N300. There was a decrease from 3.7 to 1.9 kg of body weight gain per kg of additional N applied when increasing N rates from 100 to 200 and from 100 to 300 kg ha-¹. The net profit improved with increasing N levels, but at reducing rates, reaching its maximum at the N300 level. The change from 100 to 200 kg N ha-¹ presented the best return, with U... Mostrar Tudo |
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Thesagro: |
Gramínea Forrageira; Matéria Orgânica; Panicum Maximum. |
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Thesaurus NAL: |
Crude protein; Grasses; Organic matter; Pastures. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/doc/1149533/1/Biological-economic-responses-2022.pdf
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Marc: |
LEADER 03141naa a2200313 a 4500
001 2149533
005 2022-12-14
008 2022 bl uuuu u00u1 u #d
024 7 $ahttps://doi.org/10.1038/s41598-022-05796-6$2DOI
100 1 $aEUCLIDES, V. P. B.
245 $aBiological and economic responses to increasing nitrogen rates in Mombaça guinea grass pastures.$h[electronic resource]
260 $c2022
520 $aNitrogen fertilization has been recognized as an essential tool towards the establishment of sustainable intensification of pasture-based livestock systems using tropical perennial grasses if, for a given ecosystem it is capable of increasing forage growth, stocking rates and animal performance. This study assessed pasture growth traits, nutritive value, animal and economic responses of Panicum maximum cv. Mombaça guinea grass pastures subjected to different levels of N fertilization (100 (N100), 200 (N200), and 300 (N300) kg N ha-¹ yr-¹). Pastures were managed under rotational stocking to maintain similar pre (80-90 cm) and post-grazing (45 cm) canopy heights. A partial budget and a Benefit-Cost Analysis were used to assess the economic returns on increasing N fertilization. N300 resulted in greater post-grazing herbage mass. A slightly higher neutral fiber and acid lignin detergent was observed at N100 (P < 0.05); crude protein increased linearly, and in vitro digestible organic matter reached maximum value at 265.4 kg N ha-¹ yr-¹. Annual averages of animal weight gain were 515, 590 and 660 g d-¹, respectively, for N100, N200 and N300. There was a decrease from 3.7 to 1.9 kg of body weight gain per kg of additional N applied when increasing N rates from 100 to 200 and from 100 to 300 kg ha-¹. The net profit improved with increasing N levels, but at reducing rates, reaching its maximum at the N300 level. The change from 100 to 200 kg N ha-¹ presented the best return, with USD 3.73 for each additional dollar invested, while the change from 200 kg N ha-¹ to 300 kg N ha-¹ was economically less than optimal, recouping only USD 1.60 for each dollar. The N300 rate presented the highest net profit per hectare (accounting profit), even in a pessimist scenario (25% reduction in production). Despite being profitable, the N300 rate was less than optimal from an economic standpoint, since an additional 100 kg of Nitrogen ha-¹ to change from N200 to N300 level reduced both the net returns and the Benefit-Cost ratio. Our results suggest that the economically optimal level of N fertilization for Mombaça guinea grass pasture should be between 200 and 300 kg ha-¹.
650 $aCrude protein
650 $aGrasses
650 $aOrganic matter
650 $aPastures
650 $aGramínea Forrageira
650 $aMatéria Orgânica
650 $aPanicum Maximum
700 1 $aMONTAGNER, D. B.
700 1 $aARAUJO, A. R. de
700 1 $aPEREIRA, M. de A.
700 1 $aDIFANTE, G. dos S.
700 1 $aARAÚJO, I. M. M. de
700 1 $aBARBOSA, L. F.
700 1 $aBARBOSA, R. A.
700 1 $aGURGEL, A. L. C.
773 $tScientific Reports$gv. 12, article 1937, 2022.
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