oalib
Search Results: 1 - 10 of 100 matches for " "
All listed articles are free for downloading (OA Articles)
Page 1 /100
Display every page Item
Efeito do raleio de frutos sobre o dano de Bonagota cranaodes (Meyrick, 1937) (Lepidoptera: Tortricidae) em cultivares de macieira
Botton, Marcos;Nakano, Octávio;Kovaleski, Adalécio;
Ciência Rural , 2000, DOI: 10.1590/S0103-84782000000400027
Abstract: the effect of fruit thinning on apple leafroller bonagota cranaodes (meyrick, 1937) (lepidoptera: tortricidae) damage was evaluated in commercial orchards of fuji and gala cultivars. at harvest, appies produced in clusters of two, three or four fruits and isolated ones were evaluated for percentage of pest damage. a positive correlation between lhe number of fruits per cluster and percentage of appie leafroller damage was observed. the injury to fruits was higher during late season cultivar fuji (harvested in april) than early season gala (february). fruits produced in isolated floral buds were significativelly less damaged by the pest than in cluster, indicating that is possible io use apple thinning to reduce apple leafroller damage in commercial orchards.
Controle químico da lagarta-enroladeira (Bonagota cranaodes Meyrick) na cultura da macieira
BOTTON MARCOS,NAKANO OCTáVIO,KOVALESKI ADALéCIO
Pesquisa Agropecuária Brasileira , 2000,
Abstract: A lagarta-enroladeira, Bonagota cranaodes Meyrick (Lepidoptera: Tortricidae), é considerada uma das principais pragas da macieira no Brasil. Com o objetivo de selecionar inseticidas visando ao controle do inseto, experimentos de laboratório e campo foram conduzidos com clorpirifós-etil (Lorsban 480 CE - 72 g de i.a./100 L), metidatiom (Supracid 400 - 60 g de i.a/100 L), fosmet (Imidan 50 PM - 100 g de i.a./100 L), triclorfom (Dipterex 500 - 150 g de i.a./100 L), tebufenozide (Mimic 240 SC - 21,6 g de i.a./100 L), fenitrotiom (Sumithion 500 CE - 75 g de i.a./100 L) e carbaril (Sevin 850 PM - 153 g de i.a./100 L). Todos os inseticidas provocaram 100% de mortalidade de lagartas recém-eclodidas em laboratório, porém, o controle de lagartas de 4o e 5o ínstar, após seu estabelecimento nas plantas de macieira, somente foi satisfatório com clorpirifós-etil, tebufenozide e triclorfom. A pulveriza o de clorpirifós-etil, após picos de captura dos machos de B. cranaodes com armadilhas de ferom nio sexual resultaram em menos de 1% de frutos danificados na colheita em compara o com 4,6% com tebufenozide, e 9,8% na testemunha.
Efeito de dietas artificiais para a alimenta o de adultos de Bonagota cranaodes (Meyrick) (Lepidoptera: Tortricidae), em laboratório  [cached]
Fonseca Fabiana Lazzerini da,Manfredi-Coimbra Silvana,Foresti Josemar,Kovaleski Adalecio
Ciência Rural , 2005,
Abstract: Adultos de Bonagota cranaodes (Meyrick) (Lepidoptera: Tortricidae) submetidos a tratamentos com água, solu o de mel a 10%, solu o de mel a 10% + 25% de cerveja e sem alimento foram mantidos em gaiolas de PVC transparente para avaliar a fecundidade, longevidade e viabilidade de ovos em laboratório a 25?1degreesC e 70?10% de UR. Maior longevidade de fêmeas e machos e número de ovos/fêmea foram obtidos nos substratos compostos de mel a 10% (17,75 dias, 17,35 dias e 14,07 ovos/postura) e mel a 10% + 25% de cerveja (18,25 dias, 18,20 dias e 12,71 ovos/postura). A viabilidade dos ovos e a dura o do período embrionário foram semelhantes em todos os tratamentos. O substrato alimentar mel a 10% + 25% de cerveja, apresentou efeitos semelhantes ao substrato composto de apenas mel a 10% sobre a longevidade, fertilidade e viabilidade dos ovos. Entretanto, devido ao menor custo, a dieta a base de mel apresenta melhor potencial de utiliza o para manuten o da cria o do inseto em laboratório.
Concentra??o e tempo de libera??o do ferom?nio sexual sintético de Bonagota cranaodes (Meyrick) (Lepidoptera: Tortricidae) na cultura da macieira
Kovaleski, Adalecio;Botton, Marcos;Nakano, Octavio;Vilela, Evaldo F.;Eiras, álvaro E.;
Neotropical Entomology , 2003, DOI: 10.1590/S1519-566X2003000100006
Abstract: the effect of five dosis of the synthetic sex pheromone of bonagota (=phtheochroa) cranaodes (meyrick) (a 9:1 blend of e,z 3,5 dodecanyl acetate and z9 hexadecenyl acetate) and the duration of the synthetic pheromone under field conditions were evaluated in a commercial apple orchard in vacaria, rs, brazil. no significant differences were observed among concentrations ranging from 0.25 to 3.0 mg per rubber septum. delta traps baited with two virgin females were ca. four times more attractive than those baited with the synthetic sex pheromone at the dosis of 3 mg per septum. rubber septa containing this amount of synthetic sex pheromone remained attractive for 120 days. comparing number of males captured in traps baited with the synthetic pheromone and males captured in traps with virgin females during seven months, a significant and positive correlation is observed, demonstrating that the seasonal variations in b. cranaodes population density are detected using the synthetic sex pheromone in delta traps.
Controle químico da lagarta-enroladeira (Bonagota cranaodes Meyrick) na cultura da macieira
BOTTON, MARCOS;NAKANO, OCTáVIO;KOVALESKI, ADALéCIO;
Pesquisa Agropecuária Brasileira , 2000, DOI: 10.1590/S0100-204X2000001100003
Abstract: apple leafroller, bonagota cranaodes meyrick (lepidoptera: tortricidae), is one of the major apple pests in southern brazil. laboratory and field experiments were conducted with chlorpyriphos-ethyl (lorsban 480 ce - 72 g of a.i./100 l), methidathion (supracid 400 - 60 g of a.i./100 l), phosmet (imidan 50 pm - 100 g of a.i./100 l), trichlorphon (dipterex 500 - 150 g of a.i./100 l), tebufenozide (mimic 240 sc - 21.6 g of a.i./100 l), fenitrothion (sumithion 500 ce - 75 g of a.i./100 l) and carbaryl (sevin 850 pm - 153 g of a.i./100 l) to control the pest in apple orchards. in laboratory, all insecticides caused 100% of mortality on first-instars larvae while fourth and fifth instar larvae were satisfactorily controlled only using chlorpyriphos-ethyl, tebufenozide and trichlorphon. chlorpyriphos-ethyl application after peaks of b. cranaodes males capture in pheromone traps resulted in less than 1% of fruit damage at harvest, while tebufenozide resulted in 4.6% compared to 9.8% in a non-treated area.
PARASITóIDES ASSOCIADOS à LAGARTA-ENROLADEIRA Bonagota cranaodes (MEYRICK, 1937) (LEPDOPTERA: TORTRICIDAE) NA CULTURA DA MACIEIRA  [cached]
Botton Marcos,Nakano Octávio,Kovaleski Adalécio
Ciência Rural , 2002,
Abstract: Os parasitóides associados à lagarta-enroladeira-da-macieira Bonagota cranaodes e o índice de parasitismo em pomares comerciais foram avaliados em Vacaria, RS (28o30'S/50o54W). A coleta das fases de desenvolvimento do inseto foi realizada no período de janeiro a junho de 1997. Lagartas de B. cranaodes foram parasitadas por insetos da família Braconidae (Apanteles sp e Earinus sp.) e Ichneumonidae (Itoplectis brasiliensis), sendo esta, a espécie mais freqüente, com 51,7% dos indivíduos coletados. O índice médio de parasitismo foi de 1,7 % com máximo de 6,3 % na primeira quinzena de maio. N o foram encontrados parasitóides associados à fase de ovo de B. cranaodes. Com base nestas informa es, verificou-se que o parasitismo n o é um fator importante de mortalidade da lagarta-enroladeira nos pomares comerciais de macieira.
Efeito de dietas artificiais para a alimenta??o de adultos de Bonagota cranaodes (Meyrick) (Lepidoptera: Tortricidae), em laboratório
Fonseca, Fabiana Lazzerini da;Manfredi-Coimbra, Silvana;Foresti, Josemar;Kovaleski, Adalecio;
Ciência Rural , 2005, DOI: 10.1590/S0103-84782005000600001
Abstract: adults of bonagota cranaodes (meyrick) (lepidoptera: tortricidae) were maintained in cages of transparent pvc without food, with water, and fed with honey solution at 10% and with honey solution at 10% + 25% of beer only with water and without feeding to evaluate their fecundity, longevity and viability of eggs in growth to (25±1°c and 70±10% of ru). the longevity of females and males was longer and number of eggs/female were obtained in the mean substratum composed of honey at 10% (17,75 days, 17,35 days and 14,07 eggs/posture) and honey at 10% + 25% of beer (18,25 days, 18,20 days and 12,71 eggs/posture). the viability of the eggs and the duration of the embryonic period was similar in all the treatments. the mean with honey at 10% + 25% of beer, presented effects similar to the mean composed with honey at 10% regarding to the longevity, fertility and viability of eggs of b. cranaodes. however, due to the lower cost, the diet based only in honey represents the best choice in laboratory for maintenance rearing of this insect.
A Short and Stereoselective Synthesis of the Sex Pheromone of Bonagota cranaodes (Lepidoptera: Tortricidae)
Simonelli, Fabio;Oliveira, Alfredo R.M.;Marques, Francisco A.;Silva, Davi C.;
Journal of the Brazilian Chemical Society , 1998, DOI: 10.1590/S0103-50531998000400009
Abstract: a stereoselective synthesis of (3e,5z)-dodecadienyl acetate, the sex pheromone of the leafroller moth bonagota cranaodes, was efficiently carried out using a methodology based on the coupling of z-alkenyl cuprate with 4-iodo-3-butyn-1-ol in the key step.
A Short and Stereoselective Synthesis of the Sex Pheromone of Bonagota cranaodes (Lepidoptera: Tortricidae)  [cached]
Simonelli Fabio,Oliveira Alfredo R.M.,Marques Francisco A.,Silva Davi C.
Journal of the Brazilian Chemical Society , 1998,
Abstract: A stereoselective synthesis of (3E,5Z)-dodecadienyl acetate, the sex pheromone of the leafroller moth Bonagota cranaodes, was efficiently carried out using a methodology based on the coupling of Z-alkenyl cuprate with 4-iodo-3-butyn-1-ol in the key step.
PARASITóIDES ASSOCIADOS à LAGARTA-ENROLADEIRA Bonagota cranaodes (MEYRICK, 1937) (LEPDOPTERA: TORTRICIDAE) NA CULTURA DA MACIEIRA
Botton, Marcos;Nakano, Octávio;Kovaleski, Adalécio;
Ciência Rural , 2002, DOI: 10.1590/S0103-84782002000200026
Abstract: a survey of parasitoids associated with apple leafroller bonagota cranaodes and the level of parasitism was evaluated in commercial apple orchards in vacaria, rs, brazil (28o30's/50o54w) by collecting eggs, larvae and pupae from january to june, 1997. three species of parasitoids (apanteles sp, earinus sp. and itoplectis brasiliensis) were found associated with b. cranaodes larvae and pupae. i. brasiliensis was the most frequent specie, with 51.7 % of insects collected. the average of parasitism was 1.7 %, with maximum of 6.7 % in the first week of may. no parasitoids were found associated with b. cranaodes eggs. mortality caused by parasitoids was not considered an important agent of control of the apple leafroller in commercial apple orchards of southern brazil.
Page 1 /100
Display every page Item


Home
Copyright © 2008-2017 Open Access Library. All rights reserved.