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Registro Completo |
Biblioteca(s): |
Embrapa Meio-Norte. |
Data corrente: |
20/10/2020 |
Data da última atualização: |
20/10/2020 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Autoria: |
SOUSA, R. M.; SILVA, R. R. dos S.; SANTOS, A. S. dos; SILVA, C. V. da; MAGALHAES, J. A.; FOGACA, F. H. dos S.; LOPES, J. M. |
Afiliação: |
Rebeca Maria Sousa, Universidade Federal de Mato Grosso do Sul; Romério Rodrigues dos Santos Silva, Universidade Federal do Maranhão; Anália Sousa dos Santos, Universidade Federal do Maranhão; Camila Viera da Silva, Universidade Federal do Maranhão; JOAO AVELAR MAGALHAES, CPAMN; FABIOLA HELENA DOS SANTOS FOGACA, CTAA; Jane Mello Lopes, Universidade Federal do Maranhão. |
Título: |
Tambatinga juveniles performance in a recirculation aquaculture system with different stocking densities. |
Ano de publicação: |
2020 |
Fonte/Imprenta: |
Research, Society and Development, v. 9, n. 5, e178953317, 2020. |
ISSN: |
2525-3409 |
DOI: |
10.33448/rsd-v9i5.3317 |
Idioma: |
Inglês |
Conteúdo: |
In a quantitative field research, the objective of this work was to determine the best stocking density for tambatinga juveniles (Colossoma macropomum × Piaractus brachypomus) in a recirculation system during 50 days of cultivation. Tambatinga juveniles (0.72±0.02 g) were distributed in 0.08 m3 polyethylene boxes with densities of 5, 10 and 15 fish/box, with five replicates per treatment. During the experimental period, water quality, weight gain, apparent feed conversion, specific growth rate, carcass yield, proximate composition and final survival were evaluated. The water parameters remained stable and in the desired range for the species during the experimental period (temperature 25±1.52° C, pH 5.85±0.7 and dissolved oxygen 6.51±0.05 mg L-1). Statistical analyzes showed no significant difference for apparent feed conversion and survival rate. The lowest stocking density (5 fish/box) showed greater weight gain and specific growth rate, while the density of 10 fish/box showed high lipid deposition in the carcass. Aiming at greater weight gain and better specific growth rate, the results indicated that the density of 5 fish/box (0.08 m3), is the most suitable for juveniles of this species. |
Thesagro: |
Estocagem; Ganho de Peso; Taxa de Crescimento. |
Thesaurus Nal: |
Specific growth rate; Stocking rate; Weight gain. |
Categoria do assunto: |
X Pesquisa, Tecnologia e Engenharia |
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/216845/1/DesempenhoJuvenisTambatingaRSD2020.pdf
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Marc: |
LEADER 02089naa a2200289 a 4500 001 2125686 005 2020-10-20 008 2020 bl uuuu u00u1 u #d 022 $a2525-3409 024 7 $a10.33448/rsd-v9i5.3317$2DOI 100 1 $aSOUSA, R. M. 245 $aTambatinga juveniles performance in a recirculation aquaculture system with different stocking densities.$h[electronic resource] 260 $c2020 520 $aIn a quantitative field research, the objective of this work was to determine the best stocking density for tambatinga juveniles (Colossoma macropomum × Piaractus brachypomus) in a recirculation system during 50 days of cultivation. Tambatinga juveniles (0.72±0.02 g) were distributed in 0.08 m3 polyethylene boxes with densities of 5, 10 and 15 fish/box, with five replicates per treatment. During the experimental period, water quality, weight gain, apparent feed conversion, specific growth rate, carcass yield, proximate composition and final survival were evaluated. The water parameters remained stable and in the desired range for the species during the experimental period (temperature 25±1.52° C, pH 5.85±0.7 and dissolved oxygen 6.51±0.05 mg L-1). Statistical analyzes showed no significant difference for apparent feed conversion and survival rate. The lowest stocking density (5 fish/box) showed greater weight gain and specific growth rate, while the density of 10 fish/box showed high lipid deposition in the carcass. Aiming at greater weight gain and better specific growth rate, the results indicated that the density of 5 fish/box (0.08 m3), is the most suitable for juveniles of this species. 650 $aSpecific growth rate 650 $aStocking rate 650 $aWeight gain 650 $aEstocagem 650 $aGanho de Peso 650 $aTaxa de Crescimento 700 1 $aSILVA, R. R. dos S. 700 1 $aSANTOS, A. S. dos 700 1 $aSILVA, C. V. da 700 1 $aMAGALHAES, J. A. 700 1 $aFOGACA, F. H. dos S. 700 1 $aLOPES, J. M. 773 $tResearch, Society and Development$gv. 9, n. 5, e178953317, 2020.
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Embrapa Meio-Norte (CPAMN) |
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Biblioteca(s): |
Embrapa Agropecuária Oeste; Embrapa Milho e Sorgo. |
Data corrente: |
27/06/2014 |
Data da última atualização: |
06/06/2017 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Circulação/Nível: |
A - 2 |
Autoria: |
SILVA, A. F. da; GALON, L.; CONCENCO, G.; ASPIAZÚ, I.; FERREIRA, E. A.; TIRONI, S. P.; SILVA, A. A. da. |
Afiliação: |
ALEXANDRE FERREIRA DA SILVA, CNPMS; GERMANI CONCENCO, CPAO. |
Título: |
Sugarcane cultivars present differential susceptibility to herbicides ametryn and trifloxysulfuron-sodium. |
Ano de publicação: |
2014 |
Fonte/Imprenta: |
Australian Journal of Crop Science, v. 8, n. 6, p. 965-976, 2014. |
Idioma: |
Inglês |
Conteúdo: |
Weed management in Brazilian sugarcane fields is accomplished mainly with herbicides. These chemical products may negatively impact sugarcane growth and development. Therefore, we aimed this study to evaluate the influence of the selective herbicides ametryn, trifloxysulfurom-sodium and its commercially available mixture on the growth of sugarcane cultivars. The experiment was conducted under greenhouse condition in a completely randomized design, using a 3×3×4 factorial scheme with four replications. Factor A comprised sugarcane cultivars (SP80-1816, RB855113 and RB867515); factor B herbicides ametryn (Metrimex®), trifloxysulfuron-sodium (Envoke®) and its mixture (Krismat®), and factor C the doses (0.0, 0.5x, 1.0x and 3.0x the label dose), where 1.0x dose= 2,000gha-1 for ametryn; 22.5gha-1 for trifloxysulfuron-sodium and 1, 463+37.0gha-1 for the mixture. Crop toxicity was assessed 28 days after herbicide application and traits such as plant height, number of leaves per plant, stalk diameter, leaf area index, specific leaf area and crop growth rate were assessed 80 days after crop emergence. The results showed that trifloxysulfuron-sodium causes lower impact on all variables; therefore, being more selective to all cultivars. The label dose (1.0x), equivalent to 2,000 gha-1 of ametryn and 22.5 gha-1 of trifloxysulfuron- sodium is considered as a threshold between deficient weed control (in lower doses) and excessive crop toxicity (in higher doses). RB867515 and RB855113, respectively, were the most and least tolerant cultivars to both herbicides. In highly infested planting fields, farmers usually prefer to grow the most tolerant sugarcane cultivar when applying ametryn or trifloxysulfurom sodium. MenosWeed management in Brazilian sugarcane fields is accomplished mainly with herbicides. These chemical products may negatively impact sugarcane growth and development. Therefore, we aimed this study to evaluate the influence of the selective herbicides ametryn, trifloxysulfurom-sodium and its commercially available mixture on the growth of sugarcane cultivars. The experiment was conducted under greenhouse condition in a completely randomized design, using a 3×3×4 factorial scheme with four replications. Factor A comprised sugarcane cultivars (SP80-1816, RB855113 and RB867515); factor B herbicides ametryn (Metrimex®), trifloxysulfuron-sodium (Envoke®) and its mixture (Krismat®), and factor C the doses (0.0, 0.5x, 1.0x and 3.0x the label dose), where 1.0x dose= 2,000gha-1 for ametryn; 22.5gha-1 for trifloxysulfuron-sodium and 1, 463+37.0gha-1 for the mixture. Crop toxicity was assessed 28 days after herbicide application and traits such as plant height, number of leaves per plant, stalk diameter, leaf area index, specific leaf area and crop growth rate were assessed 80 days after crop emergence. The results showed that trifloxysulfuron-sodium causes lower impact on all variables; therefore, being more selective to all cultivars. The label dose (1.0x), equivalent to 2,000 gha-1 of ametryn and 22.5 gha-1 of trifloxysulfuron- sodium is considered as a threshold between deficient weed control (in lower doses) and excessive crop toxicity (in higher doses). RB867515 and RB855113, resp... Mostrar Tudo |
Thesagro: |
Cana de açúcar; Herbicida; Intoxicação. |
Thesaurus NAL: |
Herbicides; Saccharum; Trifloxysulfuron. |
Categoria do assunto: |
-- |
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/104123/1/Sugarcane-cultivars.pdf
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Marc: |
LEADER 02503naa a2200265 a 4500 001 1989153 005 2017-06-06 008 2014 bl uuuu u00u1 u #d 100 1 $aSILVA, A. F. da 245 $aSugarcane cultivars present differential susceptibility to herbicides ametryn and trifloxysulfuron-sodium.$h[electronic resource] 260 $c2014 520 $aWeed management in Brazilian sugarcane fields is accomplished mainly with herbicides. These chemical products may negatively impact sugarcane growth and development. Therefore, we aimed this study to evaluate the influence of the selective herbicides ametryn, trifloxysulfurom-sodium and its commercially available mixture on the growth of sugarcane cultivars. The experiment was conducted under greenhouse condition in a completely randomized design, using a 3×3×4 factorial scheme with four replications. Factor A comprised sugarcane cultivars (SP80-1816, RB855113 and RB867515); factor B herbicides ametryn (Metrimex®), trifloxysulfuron-sodium (Envoke®) and its mixture (Krismat®), and factor C the doses (0.0, 0.5x, 1.0x and 3.0x the label dose), where 1.0x dose= 2,000gha-1 for ametryn; 22.5gha-1 for trifloxysulfuron-sodium and 1, 463+37.0gha-1 for the mixture. Crop toxicity was assessed 28 days after herbicide application and traits such as plant height, number of leaves per plant, stalk diameter, leaf area index, specific leaf area and crop growth rate were assessed 80 days after crop emergence. The results showed that trifloxysulfuron-sodium causes lower impact on all variables; therefore, being more selective to all cultivars. The label dose (1.0x), equivalent to 2,000 gha-1 of ametryn and 22.5 gha-1 of trifloxysulfuron- sodium is considered as a threshold between deficient weed control (in lower doses) and excessive crop toxicity (in higher doses). RB867515 and RB855113, respectively, were the most and least tolerant cultivars to both herbicides. In highly infested planting fields, farmers usually prefer to grow the most tolerant sugarcane cultivar when applying ametryn or trifloxysulfurom sodium. 650 $aHerbicides 650 $aSaccharum 650 $aTrifloxysulfuron 650 $aCana de açúcar 650 $aHerbicida 650 $aIntoxicação 700 1 $aGALON, L. 700 1 $aCONCENCO, G. 700 1 $aASPIAZÚ, I. 700 1 $aFERREIRA, E. A. 700 1 $aTIRONI, S. P. 700 1 $aSILVA, A. A. da 773 $tAustralian Journal of Crop Science$gv. 8, n. 6, p. 965-976, 2014.
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