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Codling moth control in apples

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Date Issued:
2009-01-01
Summary:
This trial was designed to evaluate reduced-risk insecticides as possible replacements for the grower standard insecticides. This trial was conducted on 'Granny Smith' apple trees in a commercial orchard near Hollister, CA. Fifteen treatments were replicated four times in a RCB design. Each replicate was a group of three trees with one buffer tree between each replicate. The trees were about 12 ft tall. Treatments were applied with a handgun orchard sprayer operating at 200 psi and delivering a finished spray volume of 150 gpa (5.0 gal per replicate). Application timings were based on degree-days (DD). DD were calculated with a biofix of 22 Mar for the first generation, a biofix of 19 Jun for the second generation, and a biofix of 13 Aug for the third generation using a single sine horizontal cutoff model with a lower threshold of 50°F and an upper threshold of 88°F. Maximum and minimum air temperatures were obtained from the Ausaymas Touchtone #56 weather station in San Benito County, CA. Control of CM was evaluated at the end of the first generation on 19 Jun by inspecting 250 fruit per replicate. CM infestation damage was evaluated on 17 Sep at commercial harvest by inspecting 250 fruit per replicate. Control of motile TSSM and WPM was evaluated by brushing and counting under magnification 20 leaves per replicated on 4, 11 and 18 Aug. Data were analyzed using ANOVA and means were separated using Fisher's protected LSD, (P ≤ 0.05).
Title: Codling moth control in apples.
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Name(s): Evers, Chad, author
Van Steenwyk, Robert A., author
Coates, William W., author
Type of Resource: text
Genre: Article
Issuance: monographic
Date Issued: 2009-01-01
Extent: 1 online resource
Language(s): English
eng
Summary: This trial was designed to evaluate reduced-risk insecticides as possible replacements for the grower standard insecticides. This trial was conducted on 'Granny Smith' apple trees in a commercial orchard near Hollister, CA. Fifteen treatments were replicated four times in a RCB design. Each replicate was a group of three trees with one buffer tree between each replicate. The trees were about 12 ft tall. Treatments were applied with a handgun orchard sprayer operating at 200 psi and delivering a finished spray volume of 150 gpa (5.0 gal per replicate). Application timings were based on degree-days (DD). DD were calculated with a biofix of 22 Mar for the first generation, a biofix of 19 Jun for the second generation, and a biofix of 13 Aug for the third generation using a single sine horizontal cutoff model with a lower threshold of 50°F and an upper threshold of 88°F. Maximum and minimum air temperatures were obtained from the Ausaymas Touchtone #56 weather station in San Benito County, CA. Control of CM was evaluated at the end of the first generation on 19 Jun by inspecting 250 fruit per replicate. CM infestation damage was evaluated on 17 Sep at commercial harvest by inspecting 250 fruit per replicate. Control of motile TSSM and WPM was evaluated by brushing and counting under magnification 20 leaves per replicated on 4, 11 and 18 Aug. Data were analyzed using ANOVA and means were separated using Fisher's protected LSD, (P ≤ 0.05).
Identifier: fgcu_ir_000939 (IID)
Note(s): The publisher's version of the article is available at https://doi.org/10.4182/amt.2009.A14
Subject(s): Codling moth
Insecticides.
Apples.
Links: https://doi.org/10.4182/amt.2009.A14
Persistent Link to This Record: http://purl.flvc.org/fgcu/fd/fgcu_ir_000939
Use and Reproduction: Copyright held by author(s).
Use and Reproduction: http://rightsstatements.org/vocab/InC/1.0/
Host Institution: FGCU
Has Part: Arthropod Management Tests.

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