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Registro Completo |
Biblioteca(s): |
Embrapa Arroz e Feijão. |
Data corrente: |
09/11/2020 |
Data da última atualização: |
11/11/2020 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Autoria: |
SILVA JÚNIOR, J. L. da; BRAZ, A. J. B. P.; BOLDRIN, P. F.; FERREIRA, C. J. B.; SILVEIRA, P. M. da. |
Afiliação: |
JAIR LEAO DA SILVA JUNIOR, UNIVERSIDADE DE RIO VERDE, GO; ANTONIO JOAQUIM BRAGA PEREIRA BRAZ, UNIVERSIDADE DE RIO VERDE, GO; PAULO FERNANDES BOLDRIN, UNIVERSIDADE DE RIO VERDE, GO; CAMILA JORGE BERNABE FERREIRA, UNIVERSIDADE DE RIO VERDE, GO; PEDRO MARQUES DA SILVEIRA, CNPAF. |
Título: |
Application stages and nitrogen sources in topdressing of super-early bean crop irrigated. |
Ano de publicação: |
2020 |
Fonte/Imprenta: |
Científica, v. 48. n. 2, p. 147-153, 2020. |
ISSN: |
1984-5529 |
DOI: |
http://dx.doi.org/10.15361/1984-5529.2020v48n2p147-153 |
Idioma: |
Inglês |
Conteúdo: |
Producing food in a sustainable manner, exploiting the genetic potential of crops and optimizing cultivation time to ensure increased production are the biggest challenges for agriculture. The cultivation of super-early common bean lineages with high productive capacity leads to minor water consumption in crops under irrigation and vacate the area in less time. The objective of this work was to evaluate the yield components of super-early cycle common bean cultivars, under irrigated system in function of sources of nitrogen (N) as well as to assess different application stages. The experiment was conducted in randomized block design in a factorial scheme 4x3 + 1, corresponding of four sources of N in coverage (urea, urea + ammonium sulfate, urea + ammonium sulfate + elemental sulfur and urea + elemental sulfur), three application stages (V3, V4 and R5) and a control treatment. The N incorporation did not influence on the grain yield of the super-early cycle common bean regardless of the source and season, whereas significant results were merely found when compared to the control. The number of pods was affected when the application was carried out at the R5 stage, with a significant reduction in this yield component. The relative chlorophyll index was lower when nitrogen coverage was performed at the R5 stage. |
Palavras-Chave: |
BRS FC 104. |
Thesagro: |
Clorofila; Feijão; Fertilizante Nitrogenado; Phaseolus Vulgaris. |
Thesaurus Nal: |
Beans; Chlorophyll; Nitrogen fertilizers. |
Categoria do assunto: |
F Plantas e Produtos de Origem Vegetal |
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/217574/1/cientifica-2020.pdf
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Marc: |
LEADER 02198naa a2200289 a 4500 001 2126396 005 2020-11-11 008 2020 bl uuuu u00u1 u #d 022 $a1984-5529 024 7 $ahttp://dx.doi.org/10.15361/1984-5529.2020v48n2p147-153$2DOI 100 1 $aSILVA JÚNIOR, J. L. da 245 $aApplication stages and nitrogen sources in topdressing of super-early bean crop irrigated.$h[electronic resource] 260 $c2020 520 $aProducing food in a sustainable manner, exploiting the genetic potential of crops and optimizing cultivation time to ensure increased production are the biggest challenges for agriculture. The cultivation of super-early common bean lineages with high productive capacity leads to minor water consumption in crops under irrigation and vacate the area in less time. The objective of this work was to evaluate the yield components of super-early cycle common bean cultivars, under irrigated system in function of sources of nitrogen (N) as well as to assess different application stages. The experiment was conducted in randomized block design in a factorial scheme 4x3 + 1, corresponding of four sources of N in coverage (urea, urea + ammonium sulfate, urea + ammonium sulfate + elemental sulfur and urea + elemental sulfur), three application stages (V3, V4 and R5) and a control treatment. The N incorporation did not influence on the grain yield of the super-early cycle common bean regardless of the source and season, whereas significant results were merely found when compared to the control. The number of pods was affected when the application was carried out at the R5 stage, with a significant reduction in this yield component. The relative chlorophyll index was lower when nitrogen coverage was performed at the R5 stage. 650 $aBeans 650 $aChlorophyll 650 $aNitrogen fertilizers 650 $aClorofila 650 $aFeijão 650 $aFertilizante Nitrogenado 650 $aPhaseolus Vulgaris 653 $aBRS FC 104 700 1 $aBRAZ, A. J. B. P. 700 1 $aBOLDRIN, P. F. 700 1 $aFERREIRA, C. J. B. 700 1 $aSILVEIRA, P. M. da 773 $tCientífica$gv. 48. n. 2, p. 147-153, 2020.
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Registro original: |
Embrapa Arroz e Feijão (CNPAF) |
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| Acesso ao texto completo restrito à biblioteca da Embrapa Meio Ambiente. Para informações adicionais entre em contato com cnpma.biblioteca@embrapa.br. |
Registro Completo
Biblioteca(s): |
Embrapa Meio Ambiente. |
Data corrente: |
08/11/2018 |
Data da última atualização: |
30/10/2019 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Circulação/Nível: |
A - 1 |
Autoria: |
SILVA, M. G. da; PACKER, A. P.; SAMPAIO, F. G.; MARANI, L.; MARIANO, E. V. C.; PAZIANOTTO, R. A. A.; FERREIRA, W. J.; ALVALÁ, P. C. |
Afiliação: |
MARCELO GOMES DA SILVA, CNPq; ANA PAULA CONTADOR PACKER, CNPMA; FERNANDA GARCIA SAMPAIO, CNPMA; LUCIANO MARANI, INPE; ERICKA VOSS CHAGAS MARIANO, UFAL; RICARDO ANTONIO ALMEIDA PAZIANOTTO, CNPMA; WILLIAM JOSE FERREIRA, INPE; PLINIO CARLOS ALVALA, INPE. |
Título: |
Impact of intensive fish farming on methane emission in a tropical hydropower reservoir. |
Ano de publicação: |
2018 |
Fonte/Imprenta: |
Climatic Change, v. 150, n. 3-4, p. 150-195, 2018. |
ISSN: |
1573-1480 |
DOI: |
https://doi.org/10.1007/s10584-018-2281-4 |
Idioma: |
Inglês |
Conteúdo: |
Abstract: Fisheries and aquaculture are important sources of food for hundreds of millions of people around the world. World fish production is projected to increase by 15% in the next 10 years, reaching around 200 million tonnes per year. The main driver of this increase will be based on fish farming management in developing countries. In Brazil, fish farming is increasing due to the climate conditions and large supply of water resources, with the production system based on Nile tilapia (Oreochromis niloticus) farming in reservoirs. Inland waters like reservoirs are a natural source of methane (CH4) to the atmosphere. However, knowledge of the impact from intensive fish production in net cages on CH4 fluxes is not well known. This paper presents in situ measurements of CH4 fluxes and dissolved CH4 (DM) in the Furnas Hydroelectric Reservoir in order to evaluate the impact of fish farming on methane emissions. Measurements were taken in a control area without fish production and three areas with fish farming. The overall mean of diffusive methane flux (DMF) (5.9 ± 4.5 mg CH4 m-2 day-1) was significantly lower when compared to the overall mean of bubble methane flux (BMF) (552.9 ± 1003.9 mg CH4 m-2 day-1). The DMF and DM were significantly higher in the two areas with fish farming, whereas the BMF was not significantly different. The DMF and DM were correlated to depth and chlorophyll-a. However, the low production of BMF did not allow the comparison with the limnological parameters measured. This case study shows that CH4 emissions are influenced more by reservoir characteristics than fish production. Further investigation is necessary to assess the impact of fish farming on the greenhouse gas emissions. MenosAbstract: Fisheries and aquaculture are important sources of food for hundreds of millions of people around the world. World fish production is projected to increase by 15% in the next 10 years, reaching around 200 million tonnes per year. The main driver of this increase will be based on fish farming management in developing countries. In Brazil, fish farming is increasing due to the climate conditions and large supply of water resources, with the production system based on Nile tilapia (Oreochromis niloticus) farming in reservoirs. Inland waters like reservoirs are a natural source of methane (CH4) to the atmosphere. However, knowledge of the impact from intensive fish production in net cages on CH4 fluxes is not well known. This paper presents in situ measurements of CH4 fluxes and dissolved CH4 (DM) in the Furnas Hydroelectric Reservoir in order to evaluate the impact of fish farming on methane emissions. Measurements were taken in a control area without fish production and three areas with fish farming. The overall mean of diffusive methane flux (DMF) (5.9 ± 4.5 mg CH4 m-2 day-1) was significantly lower when compared to the overall mean of bubble methane flux (BMF) (552.9 ± 1003.9 mg CH4 m-2 day-1). The DMF and DM were significantly higher in the two areas with fish farming, whereas the BMF was not significantly different. The DMF and DM were correlated to depth and chlorophyll-a. However, the low production of BMF did not allow the comparison with the limnological para... Mostrar Tudo |
Thesagro: |
Impacto Ambiental; Metano; Mudança Climática; Piscicultura; Reservatório de Água. |
Thesaurus NAL: |
Environmental impact; Fish culture; Greenhouse gas emissions; Hydroelectric power; Methane; Water reservoirs. |
Categoria do assunto: |
P Recursos Naturais, Ciências Ambientais e da Terra |
Marc: |
LEADER 02793naa a2200361 a 4500 001 2099034 005 2019-10-30 008 2018 bl uuuu u00u1 u #d 022 $a1573-1480 024 7 $ahttps://doi.org/10.1007/s10584-018-2281-4$2DOI 100 1 $aSILVA, M. G. da 245 $aImpact of intensive fish farming on methane emission in a tropical hydropower reservoir.$h[electronic resource] 260 $c2018 520 $aAbstract: Fisheries and aquaculture are important sources of food for hundreds of millions of people around the world. World fish production is projected to increase by 15% in the next 10 years, reaching around 200 million tonnes per year. The main driver of this increase will be based on fish farming management in developing countries. In Brazil, fish farming is increasing due to the climate conditions and large supply of water resources, with the production system based on Nile tilapia (Oreochromis niloticus) farming in reservoirs. Inland waters like reservoirs are a natural source of methane (CH4) to the atmosphere. However, knowledge of the impact from intensive fish production in net cages on CH4 fluxes is not well known. This paper presents in situ measurements of CH4 fluxes and dissolved CH4 (DM) in the Furnas Hydroelectric Reservoir in order to evaluate the impact of fish farming on methane emissions. Measurements were taken in a control area without fish production and three areas with fish farming. The overall mean of diffusive methane flux (DMF) (5.9 ± 4.5 mg CH4 m-2 day-1) was significantly lower when compared to the overall mean of bubble methane flux (BMF) (552.9 ± 1003.9 mg CH4 m-2 day-1). The DMF and DM were significantly higher in the two areas with fish farming, whereas the BMF was not significantly different. The DMF and DM were correlated to depth and chlorophyll-a. However, the low production of BMF did not allow the comparison with the limnological parameters measured. This case study shows that CH4 emissions are influenced more by reservoir characteristics than fish production. Further investigation is necessary to assess the impact of fish farming on the greenhouse gas emissions. 650 $aEnvironmental impact 650 $aFish culture 650 $aGreenhouse gas emissions 650 $aHydroelectric power 650 $aMethane 650 $aWater reservoirs 650 $aImpacto Ambiental 650 $aMetano 650 $aMudança Climática 650 $aPiscicultura 650 $aReservatório de Água 700 1 $aPACKER, A. P. 700 1 $aSAMPAIO, F. G. 700 1 $aMARANI, L. 700 1 $aMARIANO, E. V. C. 700 1 $aPAZIANOTTO, R. A. A. 700 1 $aFERREIRA, W. J. 700 1 $aALVALÁ, P. C. 773 $tClimatic Change$gv. 150, n. 3-4, p. 150-195, 2018.
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