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 | Acesso ao texto completo restrito à biblioteca da Embrapa Pesca e Aquicultura. Para informações adicionais entre em contato com cnpaf.biblioteca@embrapa.br. |
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Registro Completo |
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Biblioteca(s): |
Embrapa Arroz e Feijão; Embrapa Pesca e Aquicultura. |
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Data corrente: |
28/10/2021 |
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Data da última atualização: |
14/07/2022 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
VIEIRA, J. L.; CAMPOS, S. O.; SMAGGHE, G.; FRAGOSO, D. B.; BARRIGOSSI, J. A. F.; GUEDES, R. N. C. |
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Afiliação: |
JULIANA L. VIEIRA, UFV; S. O. CAMPOS, UFV; GUY SMAGGHE, GHENT UNIVERSITY, Ghent-Belgica; DANIEL DE BRITO FRAGOSO, CNPASA; JOSE ALEXANDRE F BARRIGOSSI, CNPAF; RAUL NARCISO C. GUEDES, UFV. |
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Título: |
Area-wide survey of thiamethoxam resistance and control failure likelihood in the rice stink bugs Oebalus poecilus and O. ypsilongriseus. |
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Ano de publicação: |
2022 |
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Fonte/Imprenta: |
Journal of Pest Science, v. 95, p. 1151-1161, June 2022. |
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ISSN: |
1612-4758 |
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DOI: |
https://doi.org/10.1007/s10340-021-01445-5 |
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Idioma: |
Inglês |
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Conteúdo: |
Insecticide resistance survey is an in-situ biomonitoring method to assess potential impact of pesticides that exhibit direct economic consequences when leading to control failure of insect pest species. Nonetheless, the latter phenomenon is frequently neglected. Their spatial dependence and mapping are also seldom considered and when complexes of related pest species are involved, such as the rice stink bugs from the Neotropics, Oebalus poecilus, and O. ypsilongriseus, the scenario is even worst. Insecticide use is common against both species, particularly with the neonicotinoid thiamethoxam, and despite suspicion of a shift in O. poecilus historical dominance and complaints of control failure, the role of this insecticide in this context was never tested. Thus, we screened populations from both species for thiamethoxam resistance within rice fields from central Brazil. The levels of thiamethoxam resistance and control failure likelihood were recorded and their spatial dependence was tested and geographically mapped. The thiamethoxam potency was similar between species, which also exhibited overlapping levels of resistance. Thus, this insecticide does not seem involved in eventual shifts in species dominance and the occurrence of O. ypsilongriseus is frequent. Thiamethoxam resistance was detected in both species, nearly half of the populations of O. poecilus and about a third of O. ypsilongriseus, but at low levels (MenosInsecticide resistance survey is an in-situ biomonitoring method to assess potential impact of pesticides that exhibit direct economic consequences when leading to control failure of insect pest species. Nonetheless, the latter phenomenon is frequently neglected. Their spatial dependence and mapping are also seldom considered and when complexes of related pest species are involved, such as the rice stink bugs from the Neotropics, Oebalus poecilus, and O. ypsilongriseus, the scenario is even worst. Insecticide use is common against both species, particularly with the neonicotinoid thiamethoxam, and despite suspicion of a shift in O. poecilus historical dominance and complaints of control failure, the role of this insecticide in this context was never tested. Thus, we screened populations from both species for thiamethoxam resistance within rice fields from central Brazil. The levels of thiamethoxam resistance and control failure likelihood were recorded and their spatial dependence was tested and geographically mapped. The thiamethoxam potency was similar between species, which also exhibited overlapping levels of resistance. Thus, this insecticide does not seem involved in eventual shifts in species dominance and the occurrence of O. ypsilongriseus is frequent. Thiamethoxam resistance was detected in both species, nearly half of the populations of O. poecilus and about a third of O. ypsilongriseus, but at low levels (Mostrar Tudo |
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Palavras-Chave: |
Neotropical rice; Spatial survey. |
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Thesagro: |
Arroz; Inseticida; Oryza Sativa; Praga de Planta; Resistência Química. |
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Thesaurus Nal: |
Insecticide resistance; Insects; Neonicotinoid insecticides; Oebalus poecilus; Oebalus ypsilongriseus; Pest management; Rice. |
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Categoria do assunto: |
O Insetos e Entomologia |
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Marc: |
LEADER 02877naa a2200373 a 4500
001 2135690
005 2022-07-14
008 2022 bl uuuu u00u1 u #d
022 $a1612-4758
024 7 $ahttps://doi.org/10.1007/s10340-021-01445-5$2DOI
100 1 $aVIEIRA, J. L.
245 $aArea-wide survey of thiamethoxam resistance and control failure likelihood in the rice stink bugs Oebalus poecilus and O. ypsilongriseus.$h[electronic resource]
260 $c2022
520 $aInsecticide resistance survey is an in-situ biomonitoring method to assess potential impact of pesticides that exhibit direct economic consequences when leading to control failure of insect pest species. Nonetheless, the latter phenomenon is frequently neglected. Their spatial dependence and mapping are also seldom considered and when complexes of related pest species are involved, such as the rice stink bugs from the Neotropics, Oebalus poecilus, and O. ypsilongriseus, the scenario is even worst. Insecticide use is common against both species, particularly with the neonicotinoid thiamethoxam, and despite suspicion of a shift in O. poecilus historical dominance and complaints of control failure, the role of this insecticide in this context was never tested. Thus, we screened populations from both species for thiamethoxam resistance within rice fields from central Brazil. The levels of thiamethoxam resistance and control failure likelihood were recorded and their spatial dependence was tested and geographically mapped. The thiamethoxam potency was similar between species, which also exhibited overlapping levels of resistance. Thus, this insecticide does not seem involved in eventual shifts in species dominance and the occurrence of O. ypsilongriseus is frequent. Thiamethoxam resistance was detected in both species, nearly half of the populations of O. poecilus and about a third of O. ypsilongriseus, but at low levels (<ten-fold). As a consequence, the risk of control failure with thiamethoxam was also low. Spatial dependence was significant for both species and phenomena (i.e., thiamethoxam resistance and control failure), prevailing in about the same area and likely reflecting the local pattern of insecticide use.
650 $aInsecticide resistance
650 $aInsects
650 $aNeonicotinoid insecticides
650 $aOebalus poecilus
650 $aOebalus ypsilongriseus
650 $aPest management
650 $aRice
650 $aArroz
650 $aInseticida
650 $aOryza Sativa
650 $aPraga de Planta
650 $aResistência Química
653 $aNeotropical rice
653 $aSpatial survey
700 1 $aCAMPOS, S. O.
700 1 $aSMAGGHE, G.
700 1 $aFRAGOSO, D. B.
700 1 $aBARRIGOSSI, J. A. F.
700 1 $aGUEDES, R. N. C.
773 $tJournal of Pest Science$gv. 95, p. 1151-1161, June 2022.
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Registro original: |
Embrapa Pesca e Aquicultura (CNPASA) |
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Biblioteca |
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Origem |
Tipo/Formato |
Classificação |
Cutter |
Registro |
Volume |
Status |
URL |
Voltar
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Registro Completo
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Biblioteca(s): |
Embrapa Milho e Sorgo. |
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Data corrente: |
03/06/2023 |
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Data da última atualização: |
03/06/2023 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
B - 1 |
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Autoria: |
SANTOS, C. A. dos; OLIVEIRA, A. F. de; MOREIRA, E. D. S.; GONÇALVES, L. C.; VIANA, M. C. M.; GONTIJO NETO, M. M.; LANA, A. M. Q. |
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Afiliação: |
CLAUDINEI ALVES DOS SANTOS, Universidade Federal de Minas Gerais; ALAN FIGUEIREDO DE OLIVEIRA, Universidade Federal de Minas Gerais; ELWIRA DAPHINN SILVA MOREIRA, Universidade Federal de Minas Gerais; LÚCIO CARLOS GONÇALVES, Universidade Federal de Minas Gerais; MARIA CELUTA MACHADO VIANA, EPAMIG; MIGUEL MARQUES GONTIJO NETO, CNPMS; ÂNGELA MARIA QUINTÃO LANA, Universidade Federal de Minas Gerais. |
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Título: |
Influence of shade on productivity and nutritional value of Urochloa decumbens in silvopastoral systems using different spatial arrangements of eucalyptus cultivars. |
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Ano de publicação: |
2023 |
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Fonte/Imprenta: |
Tropical Grasslands - Forrajes Tropicales, v. 11, n. 2, p. 169-182, 2023. |
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DOI: |
http://doi.org/10.17138/TGFT(11)169-182 |
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Idioma: |
Inglês |
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Conteúdo: |
This study evaluated pasture productivity and nutritional characteristics of Urochloa decumbens in silvopastoral systems (SPS) with different eucalyptus cultivars and spatial arrangements providing differing levels of shade. SPS were arranged to provide 46 % shade (eucalyptus trees arranged in 2 double rows 2 m apart, with trees every 3 m in each row, and 20 m between double rows), 60 % shade (eucalyptus trees arranged in 2 double rows 2 m apart, with trees every 2 m in each row in double rows and 9 m between double rows) and 57 % shade (eucalyptus trees arranged in a single row, with trees every 2 m in the row and 9 m between rows) using eucalyptus cultivars ?GG100?, ?I144? or ?VM58?. Two full sun pastures treated as managed (soil pH correction and N, P and K fertilizer application) or non-managed (no correction or fertilizer application) were evaluated in addition to the 3 SPS arrangements. Photosynthetically active radiation (PAR) was 1,439 ?mol/m2 /s in full sun compared with a mean of 715 ?mol/m2 /s under different SPS arrangements. Leaf area index of U. decumbens was 28 % higher in 46 % shade and lower in all shade arrangements compared with full sun managed pasture. The dry matter yield was 58 % lower in 46 % shade and 86 % lower in 60 % shade compared with full sun managed pasture. The crude protein content in SPS pastures was higher than in the full sun pastures, with higher values in 57 % and 60 % shade. SPS significantly reduced the PAR and forage yield. These results indicate that in systems where the main objective is animal production, spacing between tree rows greater than 20 m should be used to provide sufficient high-quality grass. MenosThis study evaluated pasture productivity and nutritional characteristics of Urochloa decumbens in silvopastoral systems (SPS) with different eucalyptus cultivars and spatial arrangements providing differing levels of shade. SPS were arranged to provide 46 % shade (eucalyptus trees arranged in 2 double rows 2 m apart, with trees every 3 m in each row, and 20 m between double rows), 60 % shade (eucalyptus trees arranged in 2 double rows 2 m apart, with trees every 2 m in each row in double rows and 9 m between double rows) and 57 % shade (eucalyptus trees arranged in a single row, with trees every 2 m in the row and 9 m between rows) using eucalyptus cultivars ?GG100?, ?I144? or ?VM58?. Two full sun pastures treated as managed (soil pH correction and N, P and K fertilizer application) or non-managed (no correction or fertilizer application) were evaluated in addition to the 3 SPS arrangements. Photosynthetically active radiation (PAR) was 1,439 ?mol/m2 /s in full sun compared with a mean of 715 ?mol/m2 /s under different SPS arrangements. Leaf area index of U. decumbens was 28 % higher in 46 % shade and lower in all shade arrangements compared with full sun managed pasture. The dry matter yield was 58 % lower in 46 % shade and 86 % lower in 60 % shade compared with full sun managed pasture. The crude protein content in SPS pastures was higher than in the full sun pastures, with higher values in 57 % and 60 % shade. SPS significantly reduced the PAR and forage yield. These res... Mostrar Tudo |
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Palavras-Chave: |
Campos tropicais; Integração pecuária-floresta; Sistema integrado; Sistema silvipastoril. |
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Thesagro: |
Capim Brachiaria; Composição Química; Eucalipto; Sombreamento. |
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Categoria do assunto: |
-- |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/doc/1154196/1/Influence-of-shade-on-productivity-and-nutritional-value.pdf
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Marc: |
LEADER 02707naa a2200301 a 4500
001 2154196
005 2023-06-03
008 2023 bl uuuu u00u1 u #d
024 7 $ahttp://doi.org/10.17138/TGFT(11)169-182$2DOI
100 1 $aSANTOS, C. A. dos
245 $aInfluence of shade on productivity and nutritional value of Urochloa decumbens in silvopastoral systems using different spatial arrangements of eucalyptus cultivars.$h[electronic resource]
260 $c2023
520 $aThis study evaluated pasture productivity and nutritional characteristics of Urochloa decumbens in silvopastoral systems (SPS) with different eucalyptus cultivars and spatial arrangements providing differing levels of shade. SPS were arranged to provide 46 % shade (eucalyptus trees arranged in 2 double rows 2 m apart, with trees every 3 m in each row, and 20 m between double rows), 60 % shade (eucalyptus trees arranged in 2 double rows 2 m apart, with trees every 2 m in each row in double rows and 9 m between double rows) and 57 % shade (eucalyptus trees arranged in a single row, with trees every 2 m in the row and 9 m between rows) using eucalyptus cultivars ?GG100?, ?I144? or ?VM58?. Two full sun pastures treated as managed (soil pH correction and N, P and K fertilizer application) or non-managed (no correction or fertilizer application) were evaluated in addition to the 3 SPS arrangements. Photosynthetically active radiation (PAR) was 1,439 ?mol/m2 /s in full sun compared with a mean of 715 ?mol/m2 /s under different SPS arrangements. Leaf area index of U. decumbens was 28 % higher in 46 % shade and lower in all shade arrangements compared with full sun managed pasture. The dry matter yield was 58 % lower in 46 % shade and 86 % lower in 60 % shade compared with full sun managed pasture. The crude protein content in SPS pastures was higher than in the full sun pastures, with higher values in 57 % and 60 % shade. SPS significantly reduced the PAR and forage yield. These results indicate that in systems where the main objective is animal production, spacing between tree rows greater than 20 m should be used to provide sufficient high-quality grass.
650 $aCapim Brachiaria
650 $aComposição Química
650 $aEucalipto
650 $aSombreamento
653 $aCampos tropicais
653 $aIntegração pecuária-floresta
653 $aSistema integrado
653 $aSistema silvipastoril
700 1 $aOLIVEIRA, A. F. de
700 1 $aMOREIRA, E. D. S.
700 1 $aGONÇALVES, L. C.
700 1 $aVIANA, M. C. M.
700 1 $aGONTIJO NETO, M. M.
700 1 $aLANA, A. M. Q.
773 $tTropical Grasslands - Forrajes Tropicales$gv. 11, n. 2, p. 169-182, 2023.
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