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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. |
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Registro Completo |
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Biblioteca(s): |
Embrapa Clima Temperado. |
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Data corrente: |
12/01/2023 |
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Data da última atualização: |
27/03/2023 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
MELO, T. S.; THIEL, C. H.; SILVA, L. B. X. da; DEUNER, S.; ANDRES, A.; AVILA, G. E.; PIRES, S. N.; CONCENÇO, G. |
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Afiliação: |
THAIS STRADIOTO MELO; CAROLINE HERNKE THIEL; LARYSSA BARBOSA XAVIER DA SILVA; SIDNEI DEUNER, UNIVERSIDADE FEDERAL DE PELOTAS; ANDRE ANDRES, CPACT; GABRIELE ESPINEL AVILA; STEFANIA NUNES PIRES; GERMANI CONCENCO, CPACT. |
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Título: |
Cumulative potential and half-life of [imazapic + imazapyr] in lowland soils of Rio Grande do Sul grown with Clearfield® rice. |
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Ano de publicação: |
2022 |
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Fonte/Imprenta: |
Journal of Environmental Science and Health, Part B, v. 57, n. 6, p. 450-457, 2022. |
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ISSN: |
1532-4109 |
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DOI: |
https://doi.org/10.1080/03601234.2022.2063613 |
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Idioma: |
Inglês |
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Conteúdo: |
The objectives of this study were to estimate the residual and half-life of [imazapic + imazapyr] and to infer on the impact of these residuals over time. The first experiment comprised the application of [imazapic + imazapyr] to ClearfieldVR rice. On the following summer cropping season (365 days later), undeformed soil samples 0-5 cm depth were collected and seeds of six species or varieties were sown as bioindicators of residuals (experiment 2), being assessed plant height and dry mass 20 days after emergence start. The third experiment comprised the cultivation of the same species submitted to ten increasing herbicide doses (0-280 g ha1 ) to establish standard response curves, also assessing plant height and dry mass 20 days after emergence start. About 2.1-5.8% of the applied imazapic remains in soil after one year, for the label doses. Imazapyr was considered to be at negligible doses as its half-life is short, and less than 0.0000001% of the applied dose is expected to be in soil 365 days later. The expected imazapic half-life in lowland areas of Southern Brazil is longer than for dryland, being estimated as between 63 and 77 days (95% confidence interval), contrasting to the 60 days half-life previously estimated for dryland soils. |
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Palavras-Chave: |
Clearfield. |
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Thesagro: |
Arroz; Erva Daninha. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 02091naa a2200265 a 4500
001 2150933
005 2023-03-27
008 2022 bl uuuu u00u1 u #d
022 $a1532-4109
024 7 $ahttps://doi.org/10.1080/03601234.2022.2063613$2DOI
100 1 $aMELO, T. S.
245 $aCumulative potential and half-life of [imazapic + imazapyr] in lowland soils of Rio Grande do Sul grown with Clearfield® rice.$h[electronic resource]
260 $c2022
520 $aThe objectives of this study were to estimate the residual and half-life of [imazapic + imazapyr] and to infer on the impact of these residuals over time. The first experiment comprised the application of [imazapic + imazapyr] to ClearfieldVR rice. On the following summer cropping season (365 days later), undeformed soil samples 0-5 cm depth were collected and seeds of six species or varieties were sown as bioindicators of residuals (experiment 2), being assessed plant height and dry mass 20 days after emergence start. The third experiment comprised the cultivation of the same species submitted to ten increasing herbicide doses (0-280 g ha1 ) to establish standard response curves, also assessing plant height and dry mass 20 days after emergence start. About 2.1-5.8% of the applied imazapic remains in soil after one year, for the label doses. Imazapyr was considered to be at negligible doses as its half-life is short, and less than 0.0000001% of the applied dose is expected to be in soil 365 days later. The expected imazapic half-life in lowland areas of Southern Brazil is longer than for dryland, being estimated as between 63 and 77 days (95% confidence interval), contrasting to the 60 days half-life previously estimated for dryland soils.
650 $aArroz
650 $aErva Daninha
653 $aClearfield
700 1 $aTHIEL, C. H.
700 1 $aSILVA, L. B. X. da
700 1 $aDEUNER, S.
700 1 $aANDRES, A.
700 1 $aAVILA, G. E.
700 1 $aPIRES, S. N.
700 1 $aCONCENÇO, G.
773 $tJournal of Environmental Science and Health, Part B$gv. 57, n. 6, p. 450-457, 2022.
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Registro original: |
Embrapa Clima Temperado (CPACT) |
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Biblioteca(s): |
Embrapa Milho e Sorgo. |
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Data corrente: |
24/09/2018 |
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Data da última atualização: |
24/09/2018 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
B - 4 |
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Autoria: |
SCHAFFERT, R. E.; VIRK, D. S.; SENIOR, H. |
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Afiliação: |
ROBERT EUGENE SCHAFFERT, CNPMS; Bangor University; PBS International. |
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Título: |
Are nonwoven synthetic pollination bags a better choice for sorghum breeding? |
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Ano de publicação: |
2018 |
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Fonte/Imprenta: |
Journal of Plant Breeding and Crop Science, v. 10, n. 3, p. 58-68, 2018. |
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DOI: |
10.5897/JPBCS2017.0704 |
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Idioma: |
Inglês |
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Conteúdo: |
This work investigated the effects of seven pollination bag treatments on three varieties of sorghum for: grain loss to birds; total weight of five panicles (g); total grain weight of five panicles (g); average grain weight per panicle (g); germination per cent; and occurrence of grain mold during 2016. Varieties were: 1167048 hybrid (brown seeded); BR007B (red seeded); and P9401 (white seeded). The bag treatments were: 1. No bagging; 2. Kraft paper; 3. Kraft paper + plastic bag screen; 4 Used duraweb® SG1; 5. Used duraweb® SG2; 6. New duraweb® SG1; 7. New duraweld® SG2. High bird pressure resulted in 100% seed loss on uncovered panicles and 75% under Kraft paper pollination bags. Birds preferred white seeded P9401, which led to no seed recovery under Kraft paper bags. There was virtually no bird damage with all other pollination bags. For panicle and grain yields the varieties performed in the order 1167048>BR007B>P9401. Unprotected panicles and paper bag treatments had the lowest yields. Panicles covered with the new synthetic bags exhibited 195 to 652% higher yields compared to Kraft paper bags. Varieties x bag type interactions were not important as they contributed 4 to 6% to the total sum of squares for yield traits. Germination test under normal and stress conditions showed no significant adverse effect of bag treatments on seed health. Reused bags performed as well as new bags for all of these traits. Varieties differed significantly for the occurrence of five grain mold pathogens, with highest occurrence of Alternaria, up to 40%, on 1167048 hybrid. Of the five pathogens, bag types differed significantly for Phoma with the highest occurrence of 9% on re-used duraweb®SG2 bags. Thus bags require disinfecting and cleaning before re-use. It is concluded that nonwoven synthetic bags are a better choice than the Kraft paper pollination bags for increasing the grain yield and virtually eliminating the bird damage in sorghum. MenosThis work investigated the effects of seven pollination bag treatments on three varieties of sorghum for: grain loss to birds; total weight of five panicles (g); total grain weight of five panicles (g); average grain weight per panicle (g); germination per cent; and occurrence of grain mold during 2016. Varieties were: 1167048 hybrid (brown seeded); BR007B (red seeded); and P9401 (white seeded). The bag treatments were: 1. No bagging; 2. Kraft paper; 3. Kraft paper + plastic bag screen; 4 Used duraweb® SG1; 5. Used duraweb® SG2; 6. New duraweb® SG1; 7. New duraweld® SG2. High bird pressure resulted in 100% seed loss on uncovered panicles and 75% under Kraft paper pollination bags. Birds preferred white seeded P9401, which led to no seed recovery under Kraft paper bags. There was virtually no bird damage with all other pollination bags. For panicle and grain yields the varieties performed in the order 1167048>BR007B>P9401. Unprotected panicles and paper bag treatments had the lowest yields. Panicles covered with the new synthetic bags exhibited 195 to 652% higher yields compared to Kraft paper bags. Varieties x bag type interactions were not important as they contributed 4 to 6% to the total sum of squares for yield traits. Germination test under normal and stress conditions showed no significant adverse effect of bag treatments on seed health. Reused bags performed as well as new bags for all of these traits. Varieties differed significantly for the occurrence of five grain ... Mostrar Tudo |
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Palavras-Chave: |
Saco de polinização. |
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Thesagro: |
Grão; Rendimento; Sorgo. |
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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/183408/1/Are-nonwoven.pdf
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Marc: |
LEADER 02575naa a2200205 a 4500
001 2096207
005 2018-09-24
008 2018 bl uuuu u00u1 u #d
024 7 $a10.5897/JPBCS2017.0704$2DOI
100 1 $aSCHAFFERT, R. E.
245 $aAre nonwoven synthetic pollination bags a better choice for sorghum breeding?$h[electronic resource]
260 $c2018
520 $aThis work investigated the effects of seven pollination bag treatments on three varieties of sorghum for: grain loss to birds; total weight of five panicles (g); total grain weight of five panicles (g); average grain weight per panicle (g); germination per cent; and occurrence of grain mold during 2016. Varieties were: 1167048 hybrid (brown seeded); BR007B (red seeded); and P9401 (white seeded). The bag treatments were: 1. No bagging; 2. Kraft paper; 3. Kraft paper + plastic bag screen; 4 Used duraweb® SG1; 5. Used duraweb® SG2; 6. New duraweb® SG1; 7. New duraweld® SG2. High bird pressure resulted in 100% seed loss on uncovered panicles and 75% under Kraft paper pollination bags. Birds preferred white seeded P9401, which led to no seed recovery under Kraft paper bags. There was virtually no bird damage with all other pollination bags. For panicle and grain yields the varieties performed in the order 1167048>BR007B>P9401. Unprotected panicles and paper bag treatments had the lowest yields. Panicles covered with the new synthetic bags exhibited 195 to 652% higher yields compared to Kraft paper bags. Varieties x bag type interactions were not important as they contributed 4 to 6% to the total sum of squares for yield traits. Germination test under normal and stress conditions showed no significant adverse effect of bag treatments on seed health. Reused bags performed as well as new bags for all of these traits. Varieties differed significantly for the occurrence of five grain mold pathogens, with highest occurrence of Alternaria, up to 40%, on 1167048 hybrid. Of the five pathogens, bag types differed significantly for Phoma with the highest occurrence of 9% on re-used duraweb®SG2 bags. Thus bags require disinfecting and cleaning before re-use. It is concluded that nonwoven synthetic bags are a better choice than the Kraft paper pollination bags for increasing the grain yield and virtually eliminating the bird damage in sorghum.
650 $aGrão
650 $aRendimento
650 $aSorgo
653 $aSaco de polinização
700 1 $aVIRK, D. S.
700 1 $aSENIOR, H.
773 $tJournal of Plant Breeding and Crop Science$gv. 10, n. 3, p. 58-68, 2018.
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Embrapa Milho e Sorgo (CNPMS) |
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