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
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.
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.
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.
Biology of Bonagota cranaodes (Meyrick) (Lepidoptera: Tortricidae) on seven natural foods
Bentancourt, Carlos M.;Scatoni, Iris B.;Gonzalez, Alvaro;Franco, Jorge;
Neotropical Entomology , 2004, DOI: 10.1590/S1519-566X2004000300004
Abstract: the effect of seven natural diets on the development and reproduction of bonagota cranaodes (meyrick) was evaluated under laboratory conditions. the experiments were carried out at the temperature of 23 ± 1oc, with 70 ± 10% of rh and a photoperiod of 16:8h (l:d). the larvae were reared on apple, grapevine and honeysuckle (lonicera japonica). on the first two foods three types of diet were used: spring leaves, summer leaves and fruits. the number of instars varied from five to seven. the larvae reared on apple leaves had, in general, fewer instars than those reared on grapevine and honeysuckle leaves. the duration of larval development differed between diets. the larvae reared on spring apple leaves showed the shortest duration, and those on fruit the longest. the larvae survival was lower on fruit than on leaves, and on apples it was particularly low (17.8%). the female pupae reared on honeysuckle were heavier than those reared on the other diets. the cycle from the egg to the emergence of adults varied between 41 days on spring apple leaves and 60 days on apples. the females reared on honeysuckle and spring apple leaves were the most fecund, whereas the females on apples did not oviposit. honeysuckle and spring leaves were the most suitable foods. apples, on the other hand, were the least suitable diet, which leads one to think that larvae could hardly complete their whole cycle on this fruit.
Ocorrência de Trichogramma pretiosum Riley (Hymenoptera: Trichogrammatidae) em ovos de Bonagota cranaodes (Meyrick) (Lepidoptera: Tortricidae) em macieira
Monteiro, Lino Bittencourt;Souza, Alexandre de;Belli, Edson Luiz;Silva, Ranyse Barbosa Querino da;Zucchi, Roberto Antonio;
Revista Brasileira de Fruticultura , 2004, DOI: 10.1590/S0100-29452004000100045
Abstract: apple leaf roller, bonagota cranaodes (meyrick) is native from south america and it is one of the most important apple pests in brazil. its control is exclusively done by insectides and biological control isn't frequently applied. in this way is necessary to know the parasitoids associated with apple leaf roller. the objective of this study was to detect the parasitism occurrence on b. cranaodes eggs in the state of santa catarina (brazil). from january 2000 to november 2001; 1,700 masses were collected on leaves of apple tree, hydrangea macrophyla and hedera sp. in fraiburgo, santa catarina state. during this period egg parasitism was registered in 6.6% of masses where 22.3% of the eggs suffered parasitism. the parasite identified was trichogramma pretiosum. this is the first record of parasitizing of trichogramma pretiosum in b. cranaodes eggs in commercial apple orchards in brazil.
Desenvolvimento e exigências térmicas de Trichogramma pretiosum Riley (Hymenoptera: Trichogrammatidae) em ovos de Bonagota cranaodes (Meyrick) (Lepidoptera: Tortricidae)
Fonseca, Fabiana L. da;Kovaleski, Adalecio;Foresti, Josemar;Ringenberg, Rudiney;
Neotropical Entomology , 2005, DOI: 10.1590/S1519-566X2005000600011
Abstract: the aim of this study was to evaluate the development of trichogramma pretiosum riley on eggs of bonagota cranaodes (meyrick) under different temperatures. b. cranaodes eggs were maintained under seven constant temperatures (14, 18, 20, 22, 25, 28 and 30oc), 70 ± 10% r.h. and, 14 h l. forty replicates with 20 parasitized eggs each were kept in glass tubes (8.5 x 2.5 cm) covered with a plastic film. the method of hyperbole was used to calculate the temperature threshold (tb) and the thermal constant (k). the tb obtained was 11.9oc and to thermal constant was 153,4 dd. the most favorable temperature range was from 25oc to 30oc, at which the shortest egg-adult development period and the highest survivorship were observed.
Desenvolvimento de Chrysoperla externa alimentada na fase larval com ovos de Bonagota cranaodes
Ribeiro, Ana Lúcia de Paula;Lúcio, Alessandro Dal'Col;Costa, Ervandil Corrêa;Bolzan, Andreza Ribeiro;Jovanowichs, Rosmari;Riffel, Cinei Terezinha;
Ciência Rural , 2011, DOI: 10.1590/S0103-84782011000900013
Abstract: the paper aimed to conduct biological studies of the chrysopidae species most frequent in the brazilian agroecosystems, chrysoperla externa, in order to raise this species under laboratory conditions. the research was developed at the entomology laboratory of the federal university of santa maria, where biological studies of immature and adult stages of c. externa were performed, feeding its larva with eggs of bonagota cranaotes and adults with an artificial diet based on beer yeast and honey, in the 1:1 proportion. the embryonic period was determined using gel capsules and 2.5x8.5cm glass tubes. the adult insects were raised in pvc tubes of 10.0cm diameter and 23.0cm length, at the temperature of 25°c±2°c and 70±10% relative humidity and 14 hour photophase. according to the results obtained, the embryonic period was of 4.0 days, with 89.2% of viability, the mean larval period for the 1st, 2nd and 3rd instars was of 3.7, 4.9 and 4.5 days, respectively. the mean period for pre-pupa and pupa was of 1.4 and 9.3 days, respectively, amounting to a mean developing cycle of 27.8 days. the width measures of the cephalic capsule showed that the dyar's rule can applied to this case. larva of chrysoperla externa may be raised in eggs of bonagota cranaodes under laboratory conditions.
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.
Biologia e exigências térmicas de Trichogramma pretiosum Riley (Hymenoptera: Trichogrammatidae) sobre ovos de Bonagota cranaodes (Meyrick) (Lepidoptera: Tortricidae)
Borba, Regina da Silva;Garcia, Mauro Silveira;Kovaleski, Adalécio;Comiotto, Andressa;Cardoso, Renata Loureiro;
Ciência Rural , 2006, DOI: 10.1590/S0103-84782006000500001
Abstract: this work was aimed at studyng the biology of trichogramma in laboratory, in search of its use in integrated management programs to control bonagota cranaodes in culture of the apple. the biology of trichogramma bruni nagaraja and of two lineages (l3 and l4) of trichogramma pretiosum on eggs of b. cranaodes was done such their thermal demands and annual number of generations. the line l3 presented more parasitism (52.3%), however, the feseability was similar among the lineages studied; with biological cycle of 8.7 days; the longevity of females was 10.65 days; low threshold temperature of 11.35°c and thermal requirement of 128.70 gd, the number of annual generations this line in laboratory was 47.22 and 13.59 for vacaria-rs climate conditions. the low parasitism of the t. bruni and of the lineage l4 of t. pretiosum can be related to the layer of secretion presented on the laying of the pest. although this parasitism is considered low, the use of these lineages cannot be discarded the integrated apple production, systens. new studies shal be accomplished in field conditions.
Page 1 /100
Display every page Item


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