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Registro Completo |
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Biblioteca(s): |
Embrapa Agropecuária Oeste; Embrapa Mandioca e Fruticultura; Embrapa Meio Norte / UEP-Parnaíba; Embrapa Meio-Norte; Embrapa Unidades Centrais. |
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Data corrente: |
27/10/2004 |
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Data da última atualização: |
22/12/2006 |
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Autoria: |
NORONHA, A. C. da S. |
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Título: |
Ácaros em maracujazeiro. |
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Ano de publicação: |
2003 |
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Fonte/Imprenta: |
Cruz das Almas: Embrapa Mandioca e Fruticultura, 2003. |
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Páginas: |
2 p. |
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Série: |
(Embrapa Mandioca e Fruticultura. Maracujá em Foco, 27). |
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Idioma: |
Português |
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Conteúdo: |
Diversas pragas encontram-se associadas à cultura do maracujá podendo ocasionar prejuízos à sua produção. Entre os agentes nocivos, destacam-se algumas espécies de ácaros fitófagos pertencentes às famílias Tenuipalpidae, Brevipalpus phoenicis (Geijskes, 1939); Tarsonemidae, Polyphagotarsonemus latus (Banks, 19904) e Tetranychidae, Tetranychus mexicanus (McGregor, 1950) e Tetranychus desertorum (Banks, 1900).
O ataque de B. phoenicis (Figura 1) pode ocorrer em qualquer idade do maracujazeiro. Em infestações intensas, verifica-se o surgimento de clorose, seca e queda das folhas, além de provocar o secamento dos ramos mais tenros que morrem progressivamente da extremidade para a base. Quando associado ao definhamento precoce os danos tornam-se mais severos, com total desfolhamento, o que ocasiona a morte precoce da planta, prejudicando a comercialização dos frutos, que apresentam pintas verdes, destacadas sobre a superfície amarela (Figura 2). |
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Palavras-Chave: |
Pest; Praga: Ácaro. |
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Thesagro: |
Ácaro; Maracujá; Praga; Praga de Planta. |
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Categoria do assunto: |
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Marc: |
LEADER 01508nam a2200205 a 4500
001 1652640
005 2006-12-22
008 2003 bl uuuu u0uu1 u #d
100 1 $aNORONHA, A. C. da S.
245 $aÁcaros em maracujazeiro.
260 $aCruz das Almas: Embrapa Mandioca e Fruticultura$c2003
300 $a2 p.
490 $a(Embrapa Mandioca e Fruticultura. Maracujá em Foco, 27).
520 $aDiversas pragas encontram-se associadas à cultura do maracujá podendo ocasionar prejuízos à sua produção. Entre os agentes nocivos, destacam-se algumas espécies de ácaros fitófagos pertencentes às famílias Tenuipalpidae, Brevipalpus phoenicis (Geijskes, 1939); Tarsonemidae, Polyphagotarsonemus latus (Banks, 19904) e Tetranychidae, Tetranychus mexicanus (McGregor, 1950) e Tetranychus desertorum (Banks, 1900). O ataque de B. phoenicis (Figura 1) pode ocorrer em qualquer idade do maracujazeiro. Em infestações intensas, verifica-se o surgimento de clorose, seca e queda das folhas, além de provocar o secamento dos ramos mais tenros que morrem progressivamente da extremidade para a base. Quando associado ao definhamento precoce os danos tornam-se mais severos, com total desfolhamento, o que ocasiona a morte precoce da planta, prejudicando a comercialização dos frutos, que apresentam pintas verdes, destacadas sobre a superfície amarela (Figura 2).
650 $aÁcaro
650 $aMaracujá
650 $aPraga
650 $aPraga de Planta
653 $aPest
653 $aPraga: Ácaro
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Embrapa Mandioca e Fruticultura (CNPMF) |
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 | Acesso ao texto completo restrito à biblioteca da Embrapa Soja. Para informações adicionais entre em contato com valeria.cardoso@embrapa.br. |
Registro Completo
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Biblioteca(s): |
Embrapa Soja. |
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Data corrente: |
30/11/2005 |
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Data da última atualização: |
05/10/2007 |
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Autoria: |
MESQUITA, C. M.; HANNA, M. A.; COSTA, N. P. |
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Título: |
Self-propelled prototype soybean harvester. |
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Ano de publicação: |
2005 |
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Fonte/Imprenta: |
Transactions of the Asae, St. Joseph, v. 48, n. 4, p. 1301-1310, 2005. |
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Idioma: |
Inglês |
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Conteúdo: |
A four-row self-propelled prototype of a new and simplified concept soybean harvester was built and fied tested as part of a major project acrried out for several years. The prototype threshes soybeans from standing, uncut plants using impact energy provided by plastic fingers mounted on opposite rotating shafts, and uses a pneumatic system for capturing, separating, cleaning, and transporting the beans. Compared to ten different combines from each of three brands with conventional tangentially fed threshing systems, and ten different combines from a brand with an axial-flow threshing system, the prototype-harvested seeds were significantly better with respect to broken/split beans and seed coat damage than all the combines with tangentially fed threshing systems. The amounts of material-other-than-grain (MOG) in the sample harvested with the prototype were significantly less than for all conventional brands. The seed vigor of the sample from the prototype was significantly better than those from one of the combine brands with a tangentially fed threshing system. Invisible mechanical damage, germination, and grain field losses were not statistically different between the prototype and all combine brands evaluated. The overall results confirmed the better quality of the collected beans, including that obtained with previous versions of the prototype. It also showed that the harvesting module, initially designed for small and medium-size farms, was adaptable to a sel-propelled unit and therefore to larger-scale operations. MenosA four-row self-propelled prototype of a new and simplified concept soybean harvester was built and fied tested as part of a major project acrried out for several years. The prototype threshes soybeans from standing, uncut plants using impact energy provided by plastic fingers mounted on opposite rotating shafts, and uses a pneumatic system for capturing, separating, cleaning, and transporting the beans. Compared to ten different combines from each of three brands with conventional tangentially fed threshing systems, and ten different combines from a brand with an axial-flow threshing system, the prototype-harvested seeds were significantly better with respect to broken/split beans and seed coat damage than all the combines with tangentially fed threshing systems. The amounts of material-other-than-grain (MOG) in the sample harvested with the prototype were significantly less than for all conventional brands. The seed vigor of the sample from the prototype was significantly better than those from one of the combine brands with a tangentially fed threshing system. Invisible mechanical damage, germination, and grain field losses were not statistically different between the prototype and all combine brands evaluated. The overall results confirmed the better quality of the collected beans, including that obtained with previous versions of the prototype. It also showed that the harvesting module, initially designed for small and medium-size farms, was adaptable to a sel-propelled... Mostrar Tudo |
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Thesagro: |
Colheita; Dano Mecânico; Soja. |
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Categoria do assunto: |
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Marc: |
LEADER 02020naa a2200181 a 4500
001 1468604
005 2007-10-05
008 2005 bl --- 0-- u #d
100 1 $aMESQUITA, C. M.
245 $aSelf-propelled prototype soybean harvester.
260 $c2005
520 $aA four-row self-propelled prototype of a new and simplified concept soybean harvester was built and fied tested as part of a major project acrried out for several years. The prototype threshes soybeans from standing, uncut plants using impact energy provided by plastic fingers mounted on opposite rotating shafts, and uses a pneumatic system for capturing, separating, cleaning, and transporting the beans. Compared to ten different combines from each of three brands with conventional tangentially fed threshing systems, and ten different combines from a brand with an axial-flow threshing system, the prototype-harvested seeds were significantly better with respect to broken/split beans and seed coat damage than all the combines with tangentially fed threshing systems. The amounts of material-other-than-grain (MOG) in the sample harvested with the prototype were significantly less than for all conventional brands. The seed vigor of the sample from the prototype was significantly better than those from one of the combine brands with a tangentially fed threshing system. Invisible mechanical damage, germination, and grain field losses were not statistically different between the prototype and all combine brands evaluated. The overall results confirmed the better quality of the collected beans, including that obtained with previous versions of the prototype. It also showed that the harvesting module, initially designed for small and medium-size farms, was adaptable to a sel-propelled unit and therefore to larger-scale operations.
650 $aColheita
650 $aDano Mecânico
650 $aSoja
700 1 $aHANNA, M. A.
700 1 $aCOSTA, N. P.
773 $tTransactions of the Asae, St. Joseph$gv. 48, n. 4, p. 1301-1310, 2005.
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