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Registro Completo |
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Biblioteca(s): |
Embrapa Pecuária Sudeste. |
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Data corrente: |
12/06/2000 |
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Data da última atualização: |
03/05/2022 |
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Tipo da produção científica: |
Resumo em Anais de Congresso |
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Autoria: |
RASSINI, J. B. |
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Afiliação: |
JOAQUIM BARTOLOMEU RASSINI, CPPSE. |
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Título: |
Controle químico do capim-Braquiária (Brachiaria decumbes) em "Aceiros "de divisas agrícolas (cercas), por meio de aplicações de glifosate. |
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Ano de publicação: |
2000 |
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Fonte/Imprenta: |
In: RESUMOS DOS TRABALHOS APRESENTADOS NA CONVENÇÃO NACIONAL DE CANCHIM, 4., 2000, São Carlos, SP. Anais... São Carlos: Embrapa Pecuária Sudeste; São Paulo: ABCCAN, 2000. p.40. |
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Idioma: |
Português |
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Conteúdo: |
O presente trabalho, realizado na Embrapa Pecuária Sudeste, em São Carlos, SP, no período de dezembro de 1991 a dezembro de 1993, teve por objetivo verificar a eficiência de aplicações seqüenciais do herbicida glifosate, no controle de capim-braquiária como invasor de cercas. |
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Palavras-Chave: |
Brachiaria decumbes; Glifosate; Pastagens. |
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Thesagro: |
Controle Químico. |
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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/CPPSE/12780/1/PROCIJBR2000.00168.PDF
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Marc: |
LEADER 00965nam a2200157 a 4500
001 1044897
005 2022-05-03
008 2000 bl uuuu u00u1 u #d
100 1 $aRASSINI, J. B.
245 $aControle químico do capim-Braquiária (Brachiaria decumbes) em "Aceiros "de divisas agrícolas (cercas), por meio de aplicações de glifosate.$h[electronic resource]
260 $aIn: RESUMOS DOS TRABALHOS APRESENTADOS NA CONVENÇÃO NACIONAL DE CANCHIM, 4., 2000, São Carlos, SP. Anais... São Carlos: Embrapa Pecuária Sudeste; São Paulo: ABCCAN, 2000. p.40.$c2000
520 $aO presente trabalho, realizado na Embrapa Pecuária Sudeste, em São Carlos, SP, no período de dezembro de 1991 a dezembro de 1993, teve por objetivo verificar a eficiência de aplicações seqüenciais do herbicida glifosate, no controle de capim-braquiária como invasor de cercas.
650 $aControle Químico
653 $aBrachiaria decumbes
653 $aGlifosate
653 $aPastagens
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Registro original: |
Embrapa Pecuária Sudeste (CPPSE) |
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 | Acesso ao texto completo restrito à biblioteca da Embrapa Arroz e Feijão. Para informações adicionais entre em contato com cnpaf.biblioteca@embrapa.br. |
Registro Completo
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Biblioteca(s): |
Embrapa Arroz e Feijão. |
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Data corrente: |
10/12/2021 |
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Data da última atualização: |
16/12/2021 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
A - 2 |
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Autoria: |
BOAVENTURA, H. A.; QUINTELA, E. D.; SANTOS, E. N.; SILVA, J. F. A. e; HUMBER, R. A. |
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Afiliação: |
HELOIZA ALVES BOAVENTURA, UFG; ELIANE DIAS QUINTELA, CNPAF; ENIO N. SANTOS, bolsista CNPAF; JOSE FRANCISCO ARRUDA E SILVA, CNPAF; USDA. |
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Título: |
Susceptibility of all nymphal stages of Bemisia tabaci biotype B (Hemiptera: Aleyrodidae) to three brazilian isolates of Cordyceps sp. (Hypocreales: Cordycipitaceae) in a screenhouse under variable temperature and moisture conditions. |
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Ano de publicação: |
2021 |
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Fonte/Imprenta: |
Neotropical Entomology, v. 50, n. 1, p. 100-113, Feb. 2021. |
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ISSN: |
1678-8052 |
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DOI: |
https://doi.org/10.1007/s13744-020-00823-5 |
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Idioma: |
Inglês |
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Conteúdo: |
The susceptibility of 1st to 4th instars of Bemisia tabaci (Gennadius, 1989) (Hemiptera: Aleyrodidae) to three isolates of Cordyceps sp. (Hypocreales: Cordycipitaceae) was evaluated in screenhouse experiments under variable temperatures and moisture conditions. No differences in susceptibility to the Cordyceps sp. isolates were observed among 1st, 2nd, and 3rd instar nymphs with respect to median lethal time (LT50) values. Confirmed mortalities ranged from 63.7 to 87.8% when the isolates were tested at 5 × 107 conidia mL-1. The 4th instar was the least susceptible to the fungal isolates (? 36.6% mortality). However, 60.0 to 99.5% of the adults that emerged from 4th instar nymphs previously treated with the fungus succumbed to the infection. Temperature was more detrimental to Cordyceps sp. virulence towards B. tabaci nymphs than relative humidity (RH). At similar RH, median LT50 for 1st instar (9.4 days) was higher than for 3rd instar (5.3 days) when the fungus was tested at 5 × 107 conidia mL-1; minimal temperatures of ? 12.6°C compared to ? 17.0°C were registered for experiments with 1st and 3rd instars, respectively. However, temperatures ? 35°C for 4 to 6 h daily did not affect the efficacy of the fungus against nymphs. Cordyceps sp. showed high virulence to all life stages of B. tabaci at relatively low RH, and an ability to grow extensively over the leaf surface and to produce high amounts of conidia on infected hosts. These attributes certainly boost its potential as an important pest control component of B. tabaci biotype B, especially for management of populations resistant to synthetic insecticides. MenosThe susceptibility of 1st to 4th instars of Bemisia tabaci (Gennadius, 1989) (Hemiptera: Aleyrodidae) to three isolates of Cordyceps sp. (Hypocreales: Cordycipitaceae) was evaluated in screenhouse experiments under variable temperatures and moisture conditions. No differences in susceptibility to the Cordyceps sp. isolates were observed among 1st, 2nd, and 3rd instar nymphs with respect to median lethal time (LT50) values. Confirmed mortalities ranged from 63.7 to 87.8% when the isolates were tested at 5 × 107 conidia mL-1. The 4th instar was the least susceptible to the fungal isolates (? 36.6% mortality). However, 60.0 to 99.5% of the adults that emerged from 4th instar nymphs previously treated with the fungus succumbed to the infection. Temperature was more detrimental to Cordyceps sp. virulence towards B. tabaci nymphs than relative humidity (RH). At similar RH, median LT50 for 1st instar (9.4 days) was higher than for 3rd instar (5.3 days) when the fungus was tested at 5 × 107 conidia mL-1; minimal temperatures of ? 12.6°C compared to ? 17.0°C were registered for experiments with 1st and 3rd instars, respectively. However, temperatures ? 35°C for 4 to 6 h daily did not affect the efficacy of the fungus against nymphs. Cordyceps sp. showed high virulence to all life stages of B. tabaci at relatively low RH, and an ability to grow extensively over the leaf surface and to produce high amounts of conidia on infected hosts. These attributes certainly boost its potential as ... Mostrar Tudo |
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Palavras-Chave: |
Silverleaf whitefly. |
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Thesagro: |
Bemisia Tabaci; Controle Biológico; Feijão; Fungo Entomógeno; Fungo Para Controle Biológico; Phaseolus Vulgaris. |
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Thesaurus NAL: |
Beans; Biological control; Entomopathogenic fungi; Relative humidity. |
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Categoria do assunto: |
O Insetos e Entomologia |
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Marc: |
LEADER 02774naa a2200325 a 4500
001 2137542
005 2021-12-16
008 2021 bl uuuu u00u1 u #d
022 $a1678-8052
024 7 $ahttps://doi.org/10.1007/s13744-020-00823-5$2DOI
100 1 $aBOAVENTURA, H. A.
245 $aSusceptibility of all nymphal stages of Bemisia tabaci biotype B (Hemiptera$bAleyrodidae) to three brazilian isolates of Cordyceps sp. (Hypocreales: Cordycipitaceae) in a screenhouse under variable temperature and moisture conditions.$h[electronic resource]
260 $c2021
520 $aThe susceptibility of 1st to 4th instars of Bemisia tabaci (Gennadius, 1989) (Hemiptera: Aleyrodidae) to three isolates of Cordyceps sp. (Hypocreales: Cordycipitaceae) was evaluated in screenhouse experiments under variable temperatures and moisture conditions. No differences in susceptibility to the Cordyceps sp. isolates were observed among 1st, 2nd, and 3rd instar nymphs with respect to median lethal time (LT50) values. Confirmed mortalities ranged from 63.7 to 87.8% when the isolates were tested at 5 × 107 conidia mL-1. The 4th instar was the least susceptible to the fungal isolates (? 36.6% mortality). However, 60.0 to 99.5% of the adults that emerged from 4th instar nymphs previously treated with the fungus succumbed to the infection. Temperature was more detrimental to Cordyceps sp. virulence towards B. tabaci nymphs than relative humidity (RH). At similar RH, median LT50 for 1st instar (9.4 days) was higher than for 3rd instar (5.3 days) when the fungus was tested at 5 × 107 conidia mL-1; minimal temperatures of ? 12.6°C compared to ? 17.0°C were registered for experiments with 1st and 3rd instars, respectively. However, temperatures ? 35°C for 4 to 6 h daily did not affect the efficacy of the fungus against nymphs. Cordyceps sp. showed high virulence to all life stages of B. tabaci at relatively low RH, and an ability to grow extensively over the leaf surface and to produce high amounts of conidia on infected hosts. These attributes certainly boost its potential as an important pest control component of B. tabaci biotype B, especially for management of populations resistant to synthetic insecticides.
650 $aBeans
650 $aBiological control
650 $aEntomopathogenic fungi
650 $aRelative humidity
650 $aBemisia Tabaci
650 $aControle Biológico
650 $aFeijão
650 $aFungo Entomógeno
650 $aFungo Para Controle Biológico
650 $aPhaseolus Vulgaris
653 $aSilverleaf whitefly
700 1 $aQUINTELA, E. D.
700 1 $aSANTOS, E. N.
700 1 $aSILVA, J. F. A. e
700 1 $aHUMBER, R. A.
773 $tNeotropical Entomology$gv. 50, n. 1, p. 100-113, Feb. 2021.
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Embrapa Arroz e Feijão (CNPAF) |
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