Catalogo Articoli (Spogli Riviste)

OPAC HELP

Titolo:
Effect of ethephon on efficacy of grandlure-baited pheromone traps in surveying fall and spring populations of the boll weevil (Coleoptera : Curculionidae)
Autore:
Parajulee, MN; Slosser, JE;
Indirizzi:
Texas Agr Expt Stn, Vernon, TX 76385 USA Texas Agr Expt Stn Vernon TX USA76385 Agr Expt Stn, Vernon, TX 76385 USA
Titolo Testata:
ENVIRONMENTAL ENTOMOLOGY
fascicolo: 1, volume: 30, anno: 2001,
pagine: 64 - 69
SICI:
0046-225X(200102)30:1<64:EOEOEO>2.0.ZU;2-8
Fonte:
ISI
Lingua:
ENG
Soggetto:
EMERGENCE;
Keywords:
boil weevil; overwintering; trapping; pheromone synergist; cultural management;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Agriculture,Biology & Environmental Sciences
Citazioni:
11
Recensione:
Indirizzi per estratti:
Indirizzo: Parajulee, MN Texas Agr Expt Stn, 11708 Highway 70 S,POB 1658, Vernon, TX 76385 USA Texas Agr Expt Stn 11708 Highway 70 S,POB 1658 Vernon TX USA 76385
Citazione:
M.N. Parajulee e J.E. Slosser, "Effect of ethephon on efficacy of grandlure-baited pheromone traps in surveying fall and spring populations of the boll weevil (Coleoptera : Curculionidae)", ENV ENTOMOL, 30(1), 2001, pp. 64-69

Abstract

A 2-yr study was conducted to evaluate the effect of ethephon (2-chloroethylphosphonic acid) on efficacy of pheromone traps in monitoring fall and spring populations of adult bell weevils. The experimental procedure consisted of a grandlure pheromone strip placed in a bell weevil trap together witha 7.5-ml aqueous solution of ethephon at 0.1, 1, 10, and 100 ppm concentrations. Treatments also included traps with nothing, ethephon alone at each of the four concentrations, and grandlure alone. Traps were monitored twicea week, and ethephon solutions were replenished during each trap, inspection. Trap catch was significantly affected by year, season, and treatments. Overall, significantly higher numbers of boil weevils were captured in 1996-1997 compared with 1997-1998. Average numbers of boil weevils captured in fall season were approximately six times higher than the numbers captured in the spring season. Ethephon alone did not elicit a significant attractionto fall or spring populations at any concentration evaluated. However, thecombination of ethephon and grandlure pheromone show ed a distinct synergistic effect, enhancing the efficacy of pheromone-baited traps in monitoringfail migration of boil weevil populations. Ethephon at 1 and 10 ppm combined with grandlure were most attractive to fall-migrating weevils, capturing20-35% more weevils than the grandlure alone. The combination of ethephon at 10 ppm and grandlure also had a significant effect on weevil attractancyfor spring populations, but the results were not consistent between years. Data from this study clearly suggest that the addition of ethephon to grandlure carl significantly improve trap attractancy and will aid in boll weevil monitoring and eradication strategies that aim at attacking the weevils during the fall, with some potential of improved attractancy in monitoring spring populations.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 25/01/20 alle ore 19:02:25