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| Hirose,Edson; Neves,Pedro M. O. J.; Zequi,João A. C.; Martins,Luís H.; Peralta,Cristiane H.; Moino Jr.,Alcides. |
| The in vitro fungitoxic effect of three biofertilizers, E.M.-4, Multibion <FONT FACE=Symbol>Ô</FONT> and Supermagro used in organic agriculture and the neem oil (Azadirachta indica A. Juss) on the entomopathogenic fungi Metarhizium anisopliae and Beauveria bassiana was studied. These products were mixed in a medium where the two fungi were inoculated, and germination, vegetative growth and conidiogenesis were assessed. The biofertilizers Supermagro and E.M.- 4 showed to be less toxic for the two fungi whereas Multibion<FONT FACE=Symbol>Ô</FONT> caused major inhibition on M. anisopliae, with reductions in germination (-37.74%), colony diameter (-30.26%) and conidiogenesis (-42.62%). Neem oil promoted a larger negative effect on B.... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Organic Agriculture; Entomopathogenic Fungi; Toxic Effect. |
| Ano: 2001 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132001000400013 |
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| Neves,Pedro M.O.J.; Hirose,Edson. |
| A broca-do-café, Hypothenemus hampei (Ferrari), é uma das mais importantes pragas do cafeeiro. Seu controle é realizado, na maioria das vezes, utilizando-se produtos químicos sintéticos que contaminam o meio ambiente, os alimentos e os agricultores. O fungo Beauveria bassiana é um agente natural de controle dessa praga e apresenta potencial para o controle biológico. Assim, com o objetivo de selecionar isolados de B. bassiana para o controle da broca-do-café avaliou-se a virulência de 61 isolados, originários de diversos hospedeiros e regiões geográficas. A seleção foi realizada em duas fases: na primeira fase selecionaram-se 11 isolados com mortalidade confirmada acima de 60%. Na segunda fase determinou-se para os 11 isolados pré-selecionados, a CL50,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Cafeeiro; Fungo entomopatogênico; MIP. |
| Ano: 2005 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1519-566X2005000100011 |
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| Hirose,Edson; Panizzi,Antônio R.; Cattelan,Alexandre J.. |
| Laboratory studies with 1st instar of southern green stink bug, Nezara viridula (L.) indicated that relative humidity (RH) greatly affected nymph emergence and survivorship up to the 2nd instar, reaching the maximum value (<FONT FACE=Symbol>»</FONT> 90%) with RH of > 80%. At 60% RH, 60% of the nymphs emerged and survived, while with 0% RH only <FONT FACE=Symbol>»</FONT> 15% of eggs hatched, and most nymphs died. Emerged nymphs from egg masses placed in plastic boxes with a gradient of humidity remained on egg shells for ca. one day. After this period, they dispersed and regrouped on top of shells 6.8 ± 0.67 times, until they abandoned the shells toward the source of humidity, avoiding the water-saturated areas. Duration taken for... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: Heteroptera; Stink bug; Behavior; Aggregation; Microclimate. |
| Ano: 2006 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1519-566X2006000600006 |
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| Sosa-Gomez,Daniel R.; Delpin,Katiaíres E.; Almeida,Alvaro M.R.; Hirose,Edson. |
| The Neotropical Brown Stink Bug (NBSB), Euschistus heros (Fabricius), has a wide distribution in Brazilian soybean fields, being more important in the central region of the country. The species is the main target of insecticide applications for stink bug pest control. We determined the variability among and within populations of the NBSB by random amplification of polymorphic DNA (RAPD) analysis. Samples of NBSB were collected in soybean fields from Ubiratã (PR), Londrina (PR), Centenário do Sul (PR), Cândido Mota (SP), Ponta Porã (MS) and Sapezal (MT). Genomic DNA was extracted from the head to minimize DNA contamination by endoparasites. DNA was amplified with 10 mer primers. Fifteen primers produced 246 bands. The genetic similarity matrix was obtained,... |
| Tipo: Info:eu-repo/semantics/article |
Palavras-chave: RAPD; Molecular marker; Genetic structure; Gene flow. |
| Ano: 2004 |
URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1519-566X2004000200009 |
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