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Registro Completo |
Biblioteca(s): |
Embrapa Gado de Leite. |
Data corrente: |
06/01/2020 |
Data da última atualização: |
06/02/2024 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Autoria: |
BRIGHENTI, A. M.; SOUZA SOBRINHO, F. de; BENITES, F. R. G. |
Afiliação: |
ALEXANDRE MAGNO B DOS SANTOS, CNPGL; FAUSTO DE SOUZA SOBRINHO, CNPGL; FLAVIO RODRIGO GANDOLFI BENITES, CNPGL. |
Título: |
Differential tolerance and selectivity of herbicides in forages of the genus Cynodon. |
Ano de publicação: |
2020 |
Fonte/Imprenta: |
Grassland Science, v. 66, n. 2, p. 88-94, 2020. |
DOI: |
https://doi.org/10.1111/grs.12259 |
Idioma: |
Inglês |
Conteúdo: |
Plant recovery due to herbicide symptoms of phytotoxicity characterizes an additional waste of energy that should not be accepted as a natural physiologic response; therefore, it might result in yield losses. Herbicide‐tolerant forages and the use of less phytotoxic products on pastures provide improvements in chemical weed control and increases in forage yield. The objectives of this study were to test differences between Tifton 85 (Cynodon spp.) and African star grass (Cynodon nlemfuensis) in relation to their degree of tolerance to herbicides, as well as the selectivity of herbicides for both species. The experimental design was completely randomized, in a 2 × 8 factorial, with four replicates. Two species of Cynodon and eight herbicide treatments were evaluated. The tolerance and selectivity of herbicides for Tifton 85 and African star grass are a function of each species and the type and dose of herbicide applied. Among the two species of Cynodon, Tifton 85, in general, was more tolerant to the applied herbicides than was the African star grass and consequently with less probability to occur forage yield losses. The most phytotoxic herbicides for both forages were fluroxypyr + aminopyralid (160.0 + 80.0 g ae/ha [grams of acid equivalent per hectare]), fluroxypyr + triclopyr (320.0 + 960.0 g ae/ha) and glyphosate (180 g ae/ha). The most selective herbicides were bentazon (720.0 g ai/ha [grams of active ingredient per hectare]), imazapyr (25.0 g ai/ha) and MSMA (1,440.0 g ai/ha), which have potential for use in fields of Tifton 85 and African star grass. MenosPlant recovery due to herbicide symptoms of phytotoxicity characterizes an additional waste of energy that should not be accepted as a natural physiologic response; therefore, it might result in yield losses. Herbicide‐tolerant forages and the use of less phytotoxic products on pastures provide improvements in chemical weed control and increases in forage yield. The objectives of this study were to test differences between Tifton 85 (Cynodon spp.) and African star grass (Cynodon nlemfuensis) in relation to their degree of tolerance to herbicides, as well as the selectivity of herbicides for both species. The experimental design was completely randomized, in a 2 × 8 factorial, with four replicates. Two species of Cynodon and eight herbicide treatments were evaluated. The tolerance and selectivity of herbicides for Tifton 85 and African star grass are a function of each species and the type and dose of herbicide applied. Among the two species of Cynodon, Tifton 85, in general, was more tolerant to the applied herbicides than was the African star grass and consequently with less probability to occur forage yield losses. The most phytotoxic herbicides for both forages were fluroxypyr + aminopyralid (160.0 + 80.0 g ae/ha [grams of acid equivalent per hectare]), fluroxypyr + triclopyr (320.0 + 960.0 g ae/ha) and glyphosate (180 g ae/ha). The most selective herbicides were bentazon (720.0 g ai/ha [grams of active ingredient per hectare]), imazapyr (25.0 g ai/ha) and MSMA (1,4... Mostrar Tudo |
Palavras-Chave: |
African star grass; Forages; Tifton 85. |
Thesaurus Nal: |
Chemical control; Weeds. |
Categoria do assunto: |
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Marc: |
LEADER 02239naa a2200217 a 4500 001 2118213 005 2024-02-06 008 2020 bl uuuu u00u1 u #d 024 7 $ahttps://doi.org/10.1111/grs.12259$2DOI 100 1 $aBRIGHENTI, A. M. 245 $aDifferential tolerance and selectivity of herbicides in forages of the genus Cynodon.$h[electronic resource] 260 $c2020 520 $aPlant recovery due to herbicide symptoms of phytotoxicity characterizes an additional waste of energy that should not be accepted as a natural physiologic response; therefore, it might result in yield losses. Herbicide‐tolerant forages and the use of less phytotoxic products on pastures provide improvements in chemical weed control and increases in forage yield. The objectives of this study were to test differences between Tifton 85 (Cynodon spp.) and African star grass (Cynodon nlemfuensis) in relation to their degree of tolerance to herbicides, as well as the selectivity of herbicides for both species. The experimental design was completely randomized, in a 2 × 8 factorial, with four replicates. Two species of Cynodon and eight herbicide treatments were evaluated. The tolerance and selectivity of herbicides for Tifton 85 and African star grass are a function of each species and the type and dose of herbicide applied. Among the two species of Cynodon, Tifton 85, in general, was more tolerant to the applied herbicides than was the African star grass and consequently with less probability to occur forage yield losses. The most phytotoxic herbicides for both forages were fluroxypyr + aminopyralid (160.0 + 80.0 g ae/ha [grams of acid equivalent per hectare]), fluroxypyr + triclopyr (320.0 + 960.0 g ae/ha) and glyphosate (180 g ae/ha). The most selective herbicides were bentazon (720.0 g ai/ha [grams of active ingredient per hectare]), imazapyr (25.0 g ai/ha) and MSMA (1,440.0 g ai/ha), which have potential for use in fields of Tifton 85 and African star grass. 650 $aChemical control 650 $aWeeds 653 $aAfrican star grass 653 $aForages 653 $aTifton 85 700 1 $aSOUZA SOBRINHO, F. de 700 1 $aBENITES, F. R. G. 773 $tGrassland Science$gv. 66, n. 2, p. 88-94, 2020.
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| Acesso ao texto completo restrito à biblioteca da Embrapa Clima Temperado. Para informações adicionais entre em contato com cpact.biblioteca@embrapa.br. |
Registro Completo
Biblioteca(s): |
Embrapa Clima Temperado. |
Data corrente: |
11/11/2021 |
Data da última atualização: |
11/11/2021 |
Tipo da produção científica: |
Artigo em Periódico Indexado |
Circulação/Nível: |
A - 1 |
Autoria: |
OLIVEIRA, V. F. de; BUSANELLO, C.; VIANA, V. E.; STAFEN, C. F.; PEDROLO, A. M.; PANIZ, F. P.; PEDRON, T.; PEREIRA, R. M.; ROSA, S. A.; MAGALHAES JUNIOR, A. M. de; OLIVEIRA, A. C. de; BATISTA, B. L.; PEGORARO, C. |
Afiliação: |
VICTORIA FREITAS DE OLIVEIRA, UFPEL; CARLOS BUSANELLO; VÍVIAN EBELING VIANA; CÁSSIA FERNANDA STAFEN; ANA MARINA PEDROLO; FERNANDA POLLO PANIZ; TATIANA PEDRON; RODRIGO MENDES PEREIRA; SILVANA ALVES ROSA; ARIANO MARTINS DE MAGALHAES JUNIOR, CPACT; ANTONIO COSTA DE OLIVEIRA; BRUNO LEMOS BATISTA; CAMILA PEGORARO. |
Título: |
Assessing mineral and toxic elements content in rice grains grown in southern Brazil. |
Ano de publicação: |
2021 |
Fonte/Imprenta: |
Journal of Food Composition and Analysis, v. 100, 103914, July 2021. |
DOI: |
https://doi.org/10.1016/j.jfca.2021.103914 |
Idioma: |
Inglês |
Conteúdo: |
The development of rice genotypes with higher mineral content and less accumulation of toxic elements can help to mitigate problems related to mineral deficiency and insure consumption of safe foods. However, genetic improvement depends on the presence of genetic diversity. Therefore, here we characterize a rice panel, grown in southern Brazil, regarding iron (Fe), zinc (Zn), selenium (Se), manganese (Mn), copper (Cu), arsenic (As), cadmium (Cd) and lead (Pb) content in irrigated system with permanent flooding. The environment of each harvest season significantly influenced Cu, Zn, Se, Fe and Mn content in rice grains. None of the analyzed rice genotypes can meet the daily recommendation of Fe and Zn, being the highest contents detected for these mineral of ∼17 and ∼27 mg kg−1, respectively. We detected genotypes able to supply Mn, Cu and Se demand, and genotypes accumulating ∼37, ∼5, ∼0.200 mg kg−1 were detected, respectively. None of the analyzed genotypes showed Cd and Pb accumulation above the Brazilian allowed limits. However, As content was above of the allowed limit for most of the studied accessions, and some genotypes reached 1 mg kg−1of As in their grains. Among the genotypes, low genetic diversity was detected for the evaluated elements. |
Thesagro: |
Arroz. |
Categoria do assunto: |
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Marc: |
LEADER 02216naa a2200289 a 4500 001 2136090 005 2021-11-11 008 2021 bl uuuu u00u1 u #d 024 7 $ahttps://doi.org/10.1016/j.jfca.2021.103914$2DOI 100 1 $aOLIVEIRA, V. F. de 245 $aAssessing mineral and toxic elements content in rice grains grown in southern Brazil.$h[electronic resource] 260 $c2021 520 $aThe development of rice genotypes with higher mineral content and less accumulation of toxic elements can help to mitigate problems related to mineral deficiency and insure consumption of safe foods. However, genetic improvement depends on the presence of genetic diversity. Therefore, here we characterize a rice panel, grown in southern Brazil, regarding iron (Fe), zinc (Zn), selenium (Se), manganese (Mn), copper (Cu), arsenic (As), cadmium (Cd) and lead (Pb) content in irrigated system with permanent flooding. The environment of each harvest season significantly influenced Cu, Zn, Se, Fe and Mn content in rice grains. None of the analyzed rice genotypes can meet the daily recommendation of Fe and Zn, being the highest contents detected for these mineral of ∼17 and ∼27 mg kg−1, respectively. We detected genotypes able to supply Mn, Cu and Se demand, and genotypes accumulating ∼37, ∼5, ∼0.200 mg kg−1 were detected, respectively. None of the analyzed genotypes showed Cd and Pb accumulation above the Brazilian allowed limits. However, As content was above of the allowed limit for most of the studied accessions, and some genotypes reached 1 mg kg−1of As in their grains. Among the genotypes, low genetic diversity was detected for the evaluated elements. 650 $aArroz 700 1 $aBUSANELLO, C. 700 1 $aVIANA, V. E. 700 1 $aSTAFEN, C. F. 700 1 $aPEDROLO, A. M. 700 1 $aPANIZ, F. P. 700 1 $aPEDRON, T. 700 1 $aPEREIRA, R. M. 700 1 $aROSA, S. A. 700 1 $aMAGALHAES JUNIOR, A. M. de 700 1 $aOLIVEIRA, A. C. de 700 1 $aBATISTA, B. L. 700 1 $aPEGORARO, C. 773 $tJournal of Food Composition and Analysis$gv. 100, 103914, July 2021.
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