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A study of the behavior, ecology, an...

Arevalo-Rodriguez, Hector Alejandro.

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A study of the behavior, ecology, and control of flower thrips in blueberries towards the development of an integrated pest management (IPM) program in Florida and southern Georgia.

Record Type:	Language materials, printed : Monograph/item
Title/Author:	A study of the behavior, ecology, and control of flower thrips in blueberries towards the development of an integrated pest management (IPM) program in Florida and southern Georgia./
Author:	Arevalo-Rodriguez, Hector Alejandro.
Description:	167 p.
Notes:	Adviser: Oscar Liburd.
Contained By:	Dissertation Abstracts International68-01B.
Subject:	Agriculture, Horticulture. -
Online resource:	http://pqdd.sinica.edu.tw/twdaoapp/servlet/advanced?query=3248955

A study of the behavior, ecology, and control of flower thrips in blueberries towards the development of an integrated pest management (IPM) program in Florida and southern Georgia.
Arevalo-Rodriguez, Hector Alejandro.

A study of the behavior, ecology, and control of flower thrips in blueberries towards the development of an integrated pest management (IPM) program in Florida and southern Georgia. - 167 p.

Adviser: Oscar Liburd.

Thesis (Ph.D.)--University of Florida, 2006.

Flower thrips are considered by growers as one of the key insect pests for early-season blueberries in Florida and southern Georgia. The objective of this study was to understand interactions between thrips and early-season blueberries and to develop strategies that can be used in an Integrated Pest Management (IPM) program to control flower thrips in blueberries. This study included the two blueberry species cultivated in Florida and southern Georgia, rabbiteye and southern highbush. The investigation began with the refinement of thrips sampling techniques and a study of dispersion of thrips in blueberry plantings. From these observations, I concluded that the distribution of flower thrips was highly aggregated in blueberry fields, which is an important factor when considering management strategies. I also developed a new system to collect thrips from inside blueberry flowers, which is more efficient than flower dissection. This work continued with the analysis of population dynamics and descriptions of thrips species assemblage in blueberries. The results obtained showed a high correlation between thrips populations and the latitude at which blueberry plantings are located as well as with the phenology of the flowers in blueberry bushes. I developed a dichotomous key for the six most common species of thrips found in blueberry fields during flowering. The damage inflicted by flower thrips on blueberries was also described. An 'economic injury level' analysis for two of the most popular cultivars of rabbiteye blueberries was completed. A correlation between the number of thrips captured in sticky traps and the number of thrips found inside the flowers was developed to improve monitoring efficiency. For the chemical control of thrips, I screened nine commercial and three experimental insecticides. From these trials, I concluded that acetamiprid is the most effective insecticide for thrips control. The reduced-risk insecticide spinosad is as effective as any of the other insecticides (except for acetamiprid) and it is compatible with Orius insidiosus Say, one of the main natural enemies of thrips. Biocontrol trials did not show any advantages of mass releasing natural enemies as preventive or curative methods to control flower thrips in blueberries.Subjects--Topical Terms:

1017832
Agriculture, Horticulture.

A study of the behavior, ecology, and control of flower thrips in blueberries towards the development of an integrated pest management (IPM) program in Florida and southern Georgia.
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040 $a UMI $c UMI
100 1 $a Arevalo-Rodriguez, Hector Alejandro. $3 1287199
245 1 2 $a A study of the behavior, ecology, and control of flower thrips in blueberries towards the development of an integrated pest management (IPM) program in Florida and southern Georgia.
300 $a 167 p.
500 $a Adviser: Oscar Liburd.
500 $a Source: Dissertation Abstracts International, Volume: 68-01, Section: B, page: 0055.
502 $a Thesis (Ph.D.)--University of Florida, 2006.
520 $a Flower thrips are considered by growers as one of the key insect pests for early-season blueberries in Florida and southern Georgia. The objective of this study was to understand interactions between thrips and early-season blueberries and to develop strategies that can be used in an Integrated Pest Management (IPM) program to control flower thrips in blueberries. This study included the two blueberry species cultivated in Florida and southern Georgia, rabbiteye and southern highbush. The investigation began with the refinement of thrips sampling techniques and a study of dispersion of thrips in blueberry plantings. From these observations, I concluded that the distribution of flower thrips was highly aggregated in blueberry fields, which is an important factor when considering management strategies. I also developed a new system to collect thrips from inside blueberry flowers, which is more efficient than flower dissection. This work continued with the analysis of population dynamics and descriptions of thrips species assemblage in blueberries. The results obtained showed a high correlation between thrips populations and the latitude at which blueberry plantings are located as well as with the phenology of the flowers in blueberry bushes. I developed a dichotomous key for the six most common species of thrips found in blueberry fields during flowering. The damage inflicted by flower thrips on blueberries was also described. An 'economic injury level' analysis for two of the most popular cultivars of rabbiteye blueberries was completed. A correlation between the number of thrips captured in sticky traps and the number of thrips found inside the flowers was developed to improve monitoring efficiency. For the chemical control of thrips, I screened nine commercial and three experimental insecticides. From these trials, I concluded that acetamiprid is the most effective insecticide for thrips control. The reduced-risk insecticide spinosad is as effective as any of the other insecticides (except for acetamiprid) and it is compatible with Orius insidiosus Say, one of the main natural enemies of thrips. Biocontrol trials did not show any advantages of mass releasing natural enemies as preventive or curative methods to control flower thrips in blueberries.
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