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Registro Completo |
Biblioteca(s): |
Embrapa Soja. |
Data corrente: |
23/11/2000 |
Data da última atualização: |
09/03/2006 |
Autoria: |
PRANDO, H. F.; SOSA-GOMEZ, D.R.; ROSADO NETO, G. H. |
Título: |
Biological aspects of oryzophagus oryzae (Coleoptera: curculionidae) in water-seeded rice. |
Ano de publicação: |
2000 |
Fonte/Imprenta: |
In: INTERNATIONAL CONGRESS OF ENTOMOLOGY, 21., 2000, Foz do Iguassu. Abstracts... Londrina: Embrapa Soja, 2000. |
Volume: |
v.1 |
Páginas: |
p.281. |
Idioma: |
Inglês |
Conteúdo: |
In Santa Catarina state (SC), Brazil, around 135 thousand ha of irrigated rice are cultivated under the water-seeded system. The main insect-pest in this system is Oryzophagus oryzae. Adults and larvae attack the crop. The adults cause greater damage on germinated seeds, by eliminating the epicotyl and radicle right after sowing, or on seedlings. The larvae attack the irrigated rice roots. The present research was conducted during 1997/1998 growing periods, with the purpose of investigating the biology of this pest. Adults insects were collected in Itajai SC for identification and morphological studies. At the laboratory, the oviposition site, fertility and incubation period were observed. Larval instar were based on measurements of the head capsule. O. oryzae presents a well-defined sexual dimorphism, with females being larger than males (3.44 mm and 2.85 mm, respectively). Morphological characteristics are evident on the ventral side of the insect. The oviposition takes place on the rice plants sheath, preferably in the submersed parts. The eggs, white and slightly curved, are 0.88 mm long and 0.23 mm wide, and are located in each aerenchyma of the sheath. The average incubation period is 6.5 days inside the sheath, feeding on the divisory membranes of aerenchyma. They leave the sheath through a circular orifice at 6-10 days after oviposition. The larvae are white almost transparent in the first instar, and yellowish white in the subsequent instar. They are apodal, have six pairs of spiracles on the dorsal abdomen, which bears strongly sclerotized hook-like structures. Head capsules measurements evidence five larval instars: I (0.18 mm), II (0.24 mm), III (0.31 mm), IV (0.37 mm) and V (0.46 mm). The cocoons are impermeable, made of clay and plant residues. The attach firmly to young roots, from where the pupa removes its O2 supply. Inside the cocoon, the rostrum of the pupa is always turned to the fixation root. MenosIn Santa Catarina state (SC), Brazil, around 135 thousand ha of irrigated rice are cultivated under the water-seeded system. The main insect-pest in this system is Oryzophagus oryzae. Adults and larvae attack the crop. The adults cause greater damage on germinated seeds, by eliminating the epicotyl and radicle right after sowing, or on seedlings. The larvae attack the irrigated rice roots. The present research was conducted during 1997/1998 growing periods, with the purpose of investigating the biology of this pest. Adults insects were collected in Itajai SC for identification and morphological studies. At the laboratory, the oviposition site, fertility and incubation period were observed. Larval instar were based on measurements of the head capsule. O. oryzae presents a well-defined sexual dimorphism, with females being larger than males (3.44 mm and 2.85 mm, respectively). Morphological characteristics are evident on the ventral side of the insect. The oviposition takes place on the rice plants sheath, preferably in the submersed parts. The eggs, white and slightly curved, are 0.88 mm long and 0.23 mm wide, and are located in each aerenchyma of the sheath. The average incubation period is 6.5 days inside the sheath, feeding on the divisory membranes of aerenchyma. They leave the sheath through a circular orifice at 6-10 days after oviposition. The larvae are white almost transparent in the first instar, and yellowish white in the subsequent instar. They are apodal, have si... Mostrar Tudo |
Palavras-Chave: |
Behaviour; Brasil; Comportamento; Inseto praga; Morfologia; Morphology; Ovoposicao; Pest insects. |
Thesagro: |
Arroz; Oryzophagus Oryzae. |
Thesaurus Nal: |
Brazil; Insecta; oviposition; rice. |
Categoria do assunto: |
-- |
Marc: |
LEADER 02858naa a2200337 a 4500 001 1462583 005 2006-03-09 008 2000 bl uuuu u00u1 u #d 100 1 $aPRANDO, H. F. 245 $aBiological aspects of oryzophagus oryzae (Coleoptera$bcurculionidae) in water-seeded rice. 260 $c2000 300 $ap.281. v.1 490 $vv.1 520 $aIn Santa Catarina state (SC), Brazil, around 135 thousand ha of irrigated rice are cultivated under the water-seeded system. The main insect-pest in this system is Oryzophagus oryzae. Adults and larvae attack the crop. The adults cause greater damage on germinated seeds, by eliminating the epicotyl and radicle right after sowing, or on seedlings. The larvae attack the irrigated rice roots. The present research was conducted during 1997/1998 growing periods, with the purpose of investigating the biology of this pest. Adults insects were collected in Itajai SC for identification and morphological studies. At the laboratory, the oviposition site, fertility and incubation period were observed. Larval instar were based on measurements of the head capsule. O. oryzae presents a well-defined sexual dimorphism, with females being larger than males (3.44 mm and 2.85 mm, respectively). Morphological characteristics are evident on the ventral side of the insect. The oviposition takes place on the rice plants sheath, preferably in the submersed parts. The eggs, white and slightly curved, are 0.88 mm long and 0.23 mm wide, and are located in each aerenchyma of the sheath. The average incubation period is 6.5 days inside the sheath, feeding on the divisory membranes of aerenchyma. They leave the sheath through a circular orifice at 6-10 days after oviposition. The larvae are white almost transparent in the first instar, and yellowish white in the subsequent instar. They are apodal, have six pairs of spiracles on the dorsal abdomen, which bears strongly sclerotized hook-like structures. Head capsules measurements evidence five larval instars: I (0.18 mm), II (0.24 mm), III (0.31 mm), IV (0.37 mm) and V (0.46 mm). The cocoons are impermeable, made of clay and plant residues. The attach firmly to young roots, from where the pupa removes its O2 supply. Inside the cocoon, the rostrum of the pupa is always turned to the fixation root. 650 $aBrazil 650 $aInsecta 650 $aoviposition 650 $arice 650 $aArroz 650 $aOryzophagus Oryzae 653 $aBehaviour 653 $aBrasil 653 $aComportamento 653 $aInseto praga 653 $aMorfologia 653 $aMorphology 653 $aOvoposicao 653 $aPest insects 700 1 $aSOSA-GOMEZ, D.R. 700 1 $aROSADO NETO, G. H. 773 $tIn: INTERNATIONAL CONGRESS OF ENTOMOLOGY, 21., 2000, Foz do Iguassu. Abstracts... Londrina: Embrapa Soja, 2000.
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Embrapa Soja (CNPSO) |
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Registro Completo
Biblioteca(s): |
Embrapa Rondônia. |
Data corrente: |
01/09/1995 |
Data da última atualização: |
09/09/2020 |
Tipo da produção científica: |
Comunicado Técnico/Recomendações Técnicas |
Autoria: |
GONÇALVES, C. A. |
Afiliação: |
CARLOS ALBERTO GONÇALVES, CPAF-RO. |
Título: |
Fontes de fósforo na produção de capim Colonião (Panicum maximum, Jacq.) em Porto Velho, Rondônia. |
Ano de publicação: |
1981 |
Fonte/Imprenta: |
Porto Velho: EMBRAPA-UEPAT Porto Velho, 1981. |
Páginas: |
4 p. |
Série: |
(EMBRAPA-UEPAT Porto Velho. Comunicado técnico, 13). |
Idioma: |
Português |
Conteúdo: |
Procurou-se avaliar o efeito de três fontes de fósforo na produtividade do capim colonião. O experimento foi conduzido no campo experimental da EMBRAPA-UEPAT de Porto Velho, com solo Latossolo Amarelo textura pesada. Usou-se o delineamento experimental blocos ao acaso, com 3 repetições. Resultados demostraram que o uso tanto do superfosfato triplo, como do superfosfato simples aplicados isolados ou combinados entre si, e/ou combinados com hiperfosfato, mostraram-se bastante eficazes no aumento da produtividade do capim colonião, ficando a escolha das fontes, na dependência dos seus custos; o uso do hiperfosfato aplicado isoladamente não mostrou grande eficiência, mesmo sendo superior a testemunha; independente das fontes testadas, o fósforo proporcionou efeito benéfico no aumento da produtividade do capim colonião. |
Palavras-Chave: |
Amazônia Ocidental; Brasil; Embrapa Rondônia; Fertilization; Phosphate fertilizers; Porto Velho; Porto Velho (RO); Production; Rondonia; Western Amazon. |
Thesagro: |
Adubação; Campo Experimental; Capim Colonião; Fertilidade do Solo; Fertilizante Fosfatado; Fósforo; Gramínea Forrageira; Nutriente; Panicum Maximum; Pastagem; Produção; Produtividade. |
Thesaurus NAL: |
Amazonia; Brazil; Crop yield; Forage grasses; Megathyrsus maximus; nutrients; pastures; phosphorus; Phosphorus fertilizers; Soil fertility; yields. |
Categoria do assunto: |
-- F Plantas e Produtos de Origem Vegetal |
URL: |
https://ainfo.cnptia.embrapa.br/digital/bitstream/item/56386/1/FOL-1129-0001.pdf
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Marc: |
LEADER 02272nam a2200529 a 4500 001 1698096 005 2020-09-09 008 1981 bl uuuu u0uu1 u #d 100 1 $aGONÇALVES, C. A. 245 $aFontes de fósforo na produção de capim Colonião (Panicum maximum, Jacq.) em Porto Velho, Rondônia. 260 $aPorto Velho: EMBRAPA-UEPAT Porto Velho$c1981 300 $a4 p. 490 $a(EMBRAPA-UEPAT Porto Velho. Comunicado técnico, 13). 520 $aProcurou-se avaliar o efeito de três fontes de fósforo na produtividade do capim colonião. O experimento foi conduzido no campo experimental da EMBRAPA-UEPAT de Porto Velho, com solo Latossolo Amarelo textura pesada. Usou-se o delineamento experimental blocos ao acaso, com 3 repetições. Resultados demostraram que o uso tanto do superfosfato triplo, como do superfosfato simples aplicados isolados ou combinados entre si, e/ou combinados com hiperfosfato, mostraram-se bastante eficazes no aumento da produtividade do capim colonião, ficando a escolha das fontes, na dependência dos seus custos; o uso do hiperfosfato aplicado isoladamente não mostrou grande eficiência, mesmo sendo superior a testemunha; independente das fontes testadas, o fósforo proporcionou efeito benéfico no aumento da produtividade do capim colonião. 650 $aAmazonia 650 $aBrazil 650 $aCrop yield 650 $aForage grasses 650 $aMegathyrsus maximus 650 $anutrients 650 $apastures 650 $aphosphorus 650 $aPhosphorus fertilizers 650 $aSoil fertility 650 $ayields 650 $aAdubação 650 $aCampo Experimental 650 $aCapim Colonião 650 $aFertilidade do Solo 650 $aFertilizante Fosfatado 650 $aFósforo 650 $aGramínea Forrageira 650 $aNutriente 650 $aPanicum Maximum 650 $aPastagem 650 $aProdução 650 $aProdutividade 653 $aAmazônia Ocidental 653 $aBrasil 653 $aEmbrapa Rondônia 653 $aFertilization 653 $aPhosphate fertilizers 653 $aPorto Velho 653 $aPorto Velho (RO) 653 $aProduction 653 $aRondonia 653 $aWestern Amazon
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