Improvement in efficacy of gibberellic acid treatments in reducing susceptibility of grapefruit to attack by Caribbean fruit fly

Efficacy of the plant growth regulator, gibberellic acid (GA3), in reducing 'Marsh' grapefruit susceptibility to Anastrepha suspensa was increased through use of the surfactant, L-77 Silwet.® In addition, it was found that the duration of protection of grapefruit could be extended by use o...

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Veröffentlicht in:The Florida entomologist 1991-12, Vol.74 (4), p.570-580
Hauptverfasser: Greany, P.D. (ARS, USDA, Gainesville, FL), McDonald, R.E, Schroeder, W.J, Shaw, P.E
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container_end_page 580
container_issue 4
container_start_page 570
container_title The Florida entomologist
container_volume 74
creator Greany, P.D. (ARS, USDA, Gainesville, FL)
McDonald, R.E
Schroeder, W.J
Shaw, P.E
description Efficacy of the plant growth regulator, gibberellic acid (GA3), in reducing 'Marsh' grapefruit susceptibility to Anastrepha suspensa was increased through use of the surfactant, L-77 Silwet.® In addition, it was found that the duration of protection of grapefruit could be extended by use of two consecutive GA3treatments a month apart. Corresponding effects on peel color and resistance to mechanical puncture were noted, but peel oil content was not affected by treatment and declined at the same rate as that of untreated fruit. The implications of these results in the further development of the fly-free concept and for fruit fly control are discussed. /// Se demuestra que el uso de un surfactante mejorado (L-77 Silwet®) incrementa la eficacia del regulador de crecimiento Acido Giberelico (AG) en reducir la susceptibilidad de toronjas de la variedad "Marsh" al ataque de Anastrepha suspensa. Ademas se demuestra que dos aplicaciones consecutivas (un mes de intervalo entre aplicaciones) permiten extender el periodo durante el cual las toronjas resisten el ataque de moscas. Los tratamientos con AG tambien ocasionaron cambios en el color de la cascara del fruto e incrementaron la resistencia mecanica a la penetracion de una aguja. Sin embrago, el contenido de aceites no se vio afectado. Estos descubrimientos, una vez confirmados en pruebas de campo, pueden tenener implicaciones importantes en el desarrollo de metodos alternativos de control de moscas de la fruta. En especial se considera que se lograra apoyar el desarrollo del concepto de "areas libres de moscas".
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identifier ISSN: 0015-4040
ispartof The Florida entomologist, 1991-12, Vol.74 (4), p.570-580
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1938-5102
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source Jstor Journals Open Access
subjects ACIDO GIBERELICO
Agricultural seasons
Agriculture
ANASTREPHA SUSPENSA
CITRUS PARADISI
CONTROL DE INSECTOS
Diptera
Drosophilidae
Entomology
FLORIDA
FLORIDE
Fruit flies
Fruits
GIBBERELLINE
Harvesting seasons
Infestation
INSECT CONTROL
L-77 SILWET SURFACTANT
LUTTE ANTIINSECTE
Peels
Plant growth regulators
SURFACE ACTIVE AGENTS
SURFACTANT
SURFACTANTES
SURFACTANTS
title Improvement in efficacy of gibberellic acid treatments in reducing susceptibility of grapefruit to attack by Caribbean fruit fly
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