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Registro Completo |
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Biblioteca(s): |
Embrapa Milho e Sorgo. |
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Data corrente: |
10/09/2002 |
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Data da última atualização: |
07/06/2018 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Autoria: |
CRUZ, I.; GONÇALVES, E. P.; FIGUEIREDO, M. de L. C. |
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Afiliação: |
IVAN CRUZ, CNPMS. |
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Título: |
Effect of a nuclear polyhedrosis virus on Spodoptera frugiperda (Smith) (Lepidoptera:noctuidae) larvae, its damage and yield of maize crop. |
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Ano de publicação: |
2002 |
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Fonte/Imprenta: |
Revista Brasileira de Milho e Sorgo, Sete Lagoas, v. 1, n. 2, p. 20-27, maio/ago. 2002. |
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Idioma: |
Inglês |
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Conteúdo: |
The efficiency of Baculovirus in a wettable powder formulation to control the fall armyworm Spodoptera frugiperda (Smith) was evaluated using variations of the recommended dose of 50 grams per hectare (2.5 x 1011 polyhedron inclusion bodies - PIB ha-1): 50 or 100 g ha-1 applied once, and variations of two applications at seven-day intervals, of 25+25, 25 + 50, 50+25 and 50+50 g ha-1, compared to untreated plots. The treatments were arranged in a randomized complete block design with six replications. Each plant at 6-8 or 8-10-leaf growth stages, was artificially infested with 10 newly hatched larvae. The virus suspension (300 L ha-1) was applied 24 hours after larvae infestation using a back-pack-manual sprayer at 40 PSI (2.8 kg cm-2) and a regular flat fan nozzle. Larval mortality rate obtained from plots with the application of 50 g of Baculovirus wettable formulation ha-1, at once (96.2%), was significantly higher than that obtained with the application of 25+25 g ha-1 (85.3%) or 25 + 50 g ha-1 (87.8%). However, it was lower than that obtained from the other virus treatments, which had no significant difference among them (mean of 99.2%). The damage caused by S. frugiperda on the leaves of plants of untreated plots (average of 4.5 in an visual scale from 1 to 5) was significantly different from that observed in plots sprayed with virus (1.75 to 2.33). Plants protected with the virus produced significantly higher yield (mean of 7,577 kg ha-1) than plants unprotected (6,140 kg ha-1), that is, 23.4% higher. MenosThe efficiency of Baculovirus in a wettable powder formulation to control the fall armyworm Spodoptera frugiperda (Smith) was evaluated using variations of the recommended dose of 50 grams per hectare (2.5 x 1011 polyhedron inclusion bodies - PIB ha-1): 50 or 100 g ha-1 applied once, and variations of two applications at seven-day intervals, of 25+25, 25 + 50, 50+25 and 50+50 g ha-1, compared to untreated plots. The treatments were arranged in a randomized complete block design with six replications. Each plant at 6-8 or 8-10-leaf growth stages, was artificially infested with 10 newly hatched larvae. The virus suspension (300 L ha-1) was applied 24 hours after larvae infestation using a back-pack-manual sprayer at 40 PSI (2.8 kg cm-2) and a regular flat fan nozzle. Larval mortality rate obtained from plots with the application of 50 g of Baculovirus wettable formulation ha-1, at once (96.2%), was significantly higher than that obtained with the application of 25+25 g ha-1 (85.3%) or 25 + 50 g ha-1 (87.8%). However, it was lower than that obtained from the other virus treatments, which had no significant difference among them (mean of 99.2%). The damage caused by S. frugiperda on the leaves of plants of untreated plots (average of 4.5 in an visual scale from 1 to 5) was significantly different from that observed in plots sprayed with virus (1.75 to 2.33). Plants protected with the virus produced significantly higher yield (mean of 7,577 kg ha-1) than plants unprotected (6,140... Mostrar Tudo |
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Thesagro: |
Controle biológico; Praga de planta. |
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Categoria do assunto: |
H Saúde e Patologia |
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URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/30705/1/Effect-nuclear.pdf
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Marc: |
LEADER 02143naa a2200169 a 4500
001 1485760
005 2018-06-07
008 2002 bl uuuu u00u1 u #d
100 1 $aCRUZ, I.
245 $aEffect of a nuclear polyhedrosis virus on Spodoptera frugiperda (Smith) (Lepidoptera$bnoctuidae) larvae, its damage and yield of maize crop.$h[electronic resource]
260 $c2002
520 $aThe efficiency of Baculovirus in a wettable powder formulation to control the fall armyworm Spodoptera frugiperda (Smith) was evaluated using variations of the recommended dose of 50 grams per hectare (2.5 x 1011 polyhedron inclusion bodies - PIB ha-1): 50 or 100 g ha-1 applied once, and variations of two applications at seven-day intervals, of 25+25, 25 + 50, 50+25 and 50+50 g ha-1, compared to untreated plots. The treatments were arranged in a randomized complete block design with six replications. Each plant at 6-8 or 8-10-leaf growth stages, was artificially infested with 10 newly hatched larvae. The virus suspension (300 L ha-1) was applied 24 hours after larvae infestation using a back-pack-manual sprayer at 40 PSI (2.8 kg cm-2) and a regular flat fan nozzle. Larval mortality rate obtained from plots with the application of 50 g of Baculovirus wettable formulation ha-1, at once (96.2%), was significantly higher than that obtained with the application of 25+25 g ha-1 (85.3%) or 25 + 50 g ha-1 (87.8%). However, it was lower than that obtained from the other virus treatments, which had no significant difference among them (mean of 99.2%). The damage caused by S. frugiperda on the leaves of plants of untreated plots (average of 4.5 in an visual scale from 1 to 5) was significantly different from that observed in plots sprayed with virus (1.75 to 2.33). Plants protected with the virus produced significantly higher yield (mean of 7,577 kg ha-1) than plants unprotected (6,140 kg ha-1), that is, 23.4% higher.
650 $aControle biológico
650 $aPraga de planta
700 1 $aGONÇALVES, E. P.
700 1 $aFIGUEIREDO, M. de L. C.
773 $tRevista Brasileira de Milho e Sorgo, Sete Lagoas$gv. 1, n. 2, p. 20-27, maio/ago. 2002.
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Registro original: |
Embrapa Milho e Sorgo (CNPMS) |
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 | Acesso ao texto completo restrito à biblioteca da Embrapa Algodão. Para informações adicionais entre em contato com cnpa.biblioteca@embrapa.br. |
Registro Completo
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Biblioteca(s): |
Embrapa Algodão. |
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Data corrente: |
03/04/2013 |
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Data da última atualização: |
25/03/2015 |
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Tipo da produção científica: |
Artigo em Periódico Indexado |
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Circulação/Nível: |
Local - A |
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Autoria: |
FRANCISCO, P. R. M.; CHAVES, I. DE B.; CHAVES, L. H. G.; LIMA, E. R. V. DE; BRANDAO, Z. N.; SILVA, B. B. DA. |
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Afiliação: |
PAULO R. M. FRANCISCO; IÊDE DE B. CHAVES; LUCIA H. G. CHAVES; EDUARDO R. V. DE LIMA; ZIANY NEIVA BRANDAO, CNPA; BERNARDO B. DA SILVA. |
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Título: |
Análise espectral e avaliação de índices de vegetação para o mapeamento da caatinga. |
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Ano de publicação: |
2013 |
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Fonte/Imprenta: |
A Mira, v. 22, n. 165, p. 61-64, 2013. |
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Idioma: |
Português |
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Palavras-Chave: |
Análise espectral; Mapeamento da caatinga. |
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Categoria do assunto: |
-- |
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Marc: |
LEADER 00602naa a2200193 a 4500
001 1954970
005 2015-03-25
008 2013 bl uuuu u00u1 u #d
100 1 $aFRANCISCO, P. R. M.
245 $aAnálise espectral e avaliação de índices de vegetação para o mapeamento da caatinga.$h[electronic resource]
260 $c2013
653 $aAnálise espectral
653 $aMapeamento da caatinga
700 1 $aCHAVES, I. DE B.
700 1 $aCHAVES, L. H. G.
700 1 $aLIMA, E. R. V. DE
700 1 $aBRANDAO, Z. N.
700 1 $aSILVA, B. B. DA.
773 $tA Mira$gv. 22, n. 165, p. 61-64, 2013.
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Embrapa Algodão (CNPA) |
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