Integrated use of pink bollworm pheromone formulations and selected conventional insecticides for the control of the cotton pest complex in Pakistan

1991 ◽  
Vol 81 (4) ◽  
pp. 371-378 ◽  
Author(s):  
B.R. Critchley ◽  
D.J. Chamberlain ◽  
D.G. Campion ◽  
M.R. Attique ◽  
M. Ali ◽  
...  
Keyword(s):  
Mating Disruption ◽  
Hollow Fibre ◽  
Pink Bollworm ◽  
Control Measures ◽  
Beneficial Insects ◽  
Pheromone Formulations ◽  
Fruit Setting ◽  
Insecticide Sprays ◽  
Insecticide Spray ◽  
Cotton Pest

AbstractHollow-fibre, microencapsulated and twist-tie formulations of the pheromone of the pink bollworm Pectinophora gossypiella (Saunders) (Lepidoptera: Gelechiidae) were used in trials conducted in Pakistan from 1985–1988. Early season control of this pest by mating disruption, permitted an average reduction of two applications, of conventional insecticides otherwise required to control the cotton pest complex, particularly at the time of flower and fruit setting when beneficial insects are most numerous. The pheromone formulations, together with a mixture of selective and broad-spectrum insecticides in plots of 5 or 10 ha of cotton were compared with plots of cotton, of similar size in the same locality treated with a conventional insecticide spray programme and in plots where no insecticide applications were made for the control of bollworms. Comparisons of numbers of infested bolls and estimated yields showed that levels of control achieved using the pheromone/insecticide combinations were equal in effect to conventional programmes of insecticide sprays, whereas in plots where no bollworm control measures were taken, significantly higher bollworm infestations and reduced yield estimates were recorded.

Control of pink bollworm, Pectinophora gossypiella (Saunders) (Lepidoptera: Gelechiidae), in Egypt by mating disruption using hollow-fibre, laminate-flake and microencapsulated formulations of synthetic pheromone

1985 ◽  
Vol 75 (2) ◽  
pp. 329-346 ◽  
Author(s):  
B. R. Critchley ◽  
D. G. Campion ◽  
L. J. McVeigh ◽  
E. M. McVeigh ◽  
G. G. Cavanagh ◽  
...  
Keyword(s):  
Large Scale ◽  
Mating Disruption ◽  
Hollow Fibre ◽  
Pectinophora Gossypiella ◽  
Cotton Lint ◽  
Seed Damage ◽  
Crop Development ◽  
Synthetic Sex Pheromone ◽  
Insecticide Sprays ◽  
Insecticide Spray

AbstractHollow-fibre, laminate-flake and microencapsulated formulations of the synthetic sex pheromone (a 1:1 mixture of (Z, Z)- and (Z, E)-7, 11-hexadecadienyl acetate) of Pectinophora gossypiella (Saunders) were compared in large-scale mating disruption trials in Egypt in 1982. Fifty-hectare blocks of cotton were treated at regular intervals throughout the season with the formulated pheromone as the sole means of controlling the pest. The pheromone treatments were compared with conventional insecticide spray treatments in other 50-ha blocks of cotton sited in the same localities. Comparisons of numbers of infested flowers and green boils, open boll counts, crop development, yield of seed cotton, lint quality and seed damage in pheromone-and insecticide-treated blocks, showed that adequate levels of control were achieved using the pheromone formulations, which were equal in effect to the insecticide sprays. Beneficial insects were found in greater numbers in the pheromone-treated areas than in areas treated with insecticides.

Control of pink boll worm, Pectinophora gossypiella (Saunders) (Lepidop-tera: Gelechiidae), in Egypt by mating disruption using an aerially applied microencapsulated pheromone formulation

1983 ◽  
Vol 73 (2) ◽  
pp. 289-299 ◽  
Author(s):  
B. R. Critchley ◽  
D. G. Campion ◽  
L. J. McVeigh ◽  
P. Hunter-Jones ◽  
D. R. Hall ◽  
...  
Keyword(s):  
Sex Pheromone ◽  
Large Scale ◽  
Mating Disruption ◽  
Pectinophora Gossypiella ◽  
Seed Cotton ◽  
Plant Damage ◽  
Insecticide Sprays ◽  
Damage Criteria ◽  
Insecticide Spray

AbstractA large–scale mating disruption trial for the control of Pectinophora gossypiella (Saund.) was carried out in the Fayoum Province of Egypt during the 1981 cotton season. Two areas, each of 50 ha, were sprayed with a microencapsulated formulation of the sex pheromone (a 1:1 mixture of (Z, Z)- and (Z, E)-1, 11-hexadecadienyl acetate) as the sole means of controlling this pest. Five applications of 10 g a.i./ha were made during the season using fixed-wing aircraft. The pheromone treatments were compared with conventional insecticide spray treatments in two other 50-ha areas of cotton. From comparisons of treatments in terms of various plant damage criteria including the percentage of rosetted flowers, percentage boll infestation, gross yield of seed cotton and lint quality, it was concluded that the pheromone treatment was equal in effect to the insecticide sprays.

SPLAT-PBW: An eco-friendly, cost-effective mating disruption tool for the management of the pink bollworm on cotton

2021 ◽  
pp. 105784
Author(s):  
Sreenivas A G ◽  
Markandeya G ◽  
Harischandra Naik R ◽  
Usha R ◽  
Hanchinal S.G. ◽  
...  
Keyword(s):  
Mating Disruption ◽  
Cost Effective ◽  
Pink Bollworm

scholarly journals Hybridizing transgenic Bt cotton with non-Bt cotton counters resistance in pink bollworm

2017 ◽  
Vol 114 (21) ◽  
pp. 5413-5418 ◽  
Author(s):  
Peng Wan ◽  
Dong Xu ◽  
Shengbo Cong ◽  
Yuying Jiang ◽  
Yunxin Huang ◽  
...  
Keyword(s):  
First Generation ◽  
Resistance Management ◽  
Genetically Engineered ◽  
Pink Bollworm ◽  
Bt Cotton ◽  
Bt Toxin ◽  
Random Mixture ◽  
Cotton Plants ◽  
Evolution Of Resistance ◽  
Insecticide Sprays

Extensive cultivation of crops genetically engineered to produce insecticidal proteins from the bacteriumBacillus thuringiensis(Bt) has suppressed some major pests, reduced insecticide sprays, enhanced pest control by natural enemies, and increased grower profits. However, these benefits are being eroded by evolution of resistance in pests. We report a strategy for combating resistance by crossing transgenic Bt plants with conventional non-Bt plants and then crossing the resulting first-generation (F1) hybrid progeny and sowing the second-generation (F2) seeds. This strategy yields a random mixture within fields of three-quarters of plants that produce Bt toxin and one-quarter that does not. We hypothesized that the non-Bt plants in this mixture promote survival of susceptible insects, thereby delaying evolution of resistance. To test this hypothesis, we compared predictions from computer modeling with data monitoring pink bollworm (Pectinophora gossypiella) resistance to Bt toxin Cry1Ac produced by transgenic cotton in an 11-y study at 17 field sites in six provinces of China. The frequency of resistant individuals in the field increased before this strategy was widely deployed and then declined after its widespread adoption boosted the percentage of non-Bt cotton plants in the region. The correspondence between the predicted and observed outcomes implies that this strategy countered evolution of resistance. Despite the increased percentage of non-Bt cotton, suppression of pink bollworm was sustained. Unlike other resistance management tactics that require regulatory intervention, growers adopted this strategy voluntarily, apparently because of advantages that may include better performance as well as lower costs for seeds and insecticides.

Prospects of Ocimum Gratissimum Linn. (Lamiaceae) to Control Exorista SorbillansWiedemann (Diptera: Tachinidae) Menace of Silkworm in Seriecosystem

2021 ◽  
Author(s):  
Bulbuli Khanikor ◽  
Dipsikha Bora
Keyword(s):  
Essential Oil ◽  
Control Measures ◽  
Positive Interaction ◽  
Beneficial Insects ◽  
Enzyme Model ◽  
Commercially Important ◽  
Acetylcholinesterase Enzyme ◽  
Lepidopteran Pest ◽  
Uzi Fly ◽  
Essential Oil Compounds

Abstract Tachinid parasitoids are in focus mostly as biocontrol agents to be released against lepidopteran pest. But surprisingly certain tachinid parasitoids attack economically beneficial insects like silkworm and demands control measures against them. The uzi fly Exoristasorbillans (Diptera: Tachinidae) infests all commercially important silkworm species including Antheraeaassamensis where it causes upto 80 percent crop loss. The control of such parasitoids is a difficult task as the larval stage is endoparasitic and chemical insecticides do not reach the targeted parasitoid without exposing the silkworm host.In the present study,we evaluated adulticidal activity of different solvent extracts and essential oil of Ocimumgratissimum. We found higher efficacy of essential oil in comparison to other solvent extracts. The effective fraction of oil was found to contain thymol or its isomer carvacrol as the major compound in GC-MS studies. Finally, O. gratissimum oil-based combination (MI) and carvacrol based combination of essential oil compounds (MII) were prepared, tested and found to be effective against the fly. In silico positive interaction of essential oil compounds with acetylcholinesterase enzyme model of the fly revealed that the said enzyme is one of the target proteins for these oil compounds to interrupt its function and subsequent lethal action.

Gossyplure in Laminated Plastic Formulations for Mating Disruption and Pink Bollworm Control12

1981 ◽  
Vol 74 (4) ◽  
pp. 376-381 ◽  
Author(s):  
T. J. Henneberry ◽  
J. M. Gillespie ◽  
L. A. Bariola ◽  
H. M. Flint ◽  
P. D. Lingren ◽  
...  
Keyword(s):  
Mating Disruption ◽  
Pink Bollworm

scholarly journals Temporal variation of Brown and Green Lacewings (Neuroptera: Hemerobiidae and Chrysopidae) collected with McPhail traps from a fruit orchard in Southeast Brazil

2020 ◽  
Vol 2 ◽  
pp. ec02005
Author(s):  
Rogéria I. R. Lara ◽  
Daniell R. R. Fernandes ◽  
Francisco J. Sosa-Duque ◽  
Nicanor T. B. Antunes ◽  
Sérgio De Freitas ◽  
...  
Keyword(s):  
Temporal Variation ◽  
Citrus Sinensis ◽  
Abundant Species ◽  
Control Measures ◽  
Beneficial Insects ◽  
Southeast Brazil ◽  
Green Lacewings ◽  
Fruit Orchard ◽  
Exotic Fruits

This study was aimed at the identification of the Neuroptera (Insecta) obtained with McPhail traps in an orchard of native and exotic fruits in Jaboticabal, SP, Brazil (21°14’S / 48°17’W). Weekly sampling took place between May 2009 and April 2010. 187 specimens of Neuroptera were obtained: Nusalala tessellata (Gerstaecker, 1888) (Hemerobiidae) (176 specimens / 94.1% of the total), Leucochrysa cruentata (Schneider, 1851) (6 / 3.2%), Ceraeochrysa cubana (Hagen, 1861), Ceraeochrysa everes (Banks, 1920), Chrysoperla externa (Hagen, 1861), Leucochrysa affinis Freitas & Penny, 2001 and Leucochrysa rodriguezi (Navás, 1913) (Chrysopidae) (1 / 0.5%, each species). Nusalala tessellata was the most abundant species, with the highest frequencies recorded in August 2009 and March 2010; such frequencies coincided with the fructification of Vangueria madagascariensis Gmelin (Rubiaceae) and Citrus sinensis (L.) Osbeck (Rutaceae), respectively. The use of McPhail traps can assist in the detection of beneficial insects in agroecosystems and establishment of better sustainable control measures.

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