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Insecticidal Control of Citrus Thrips in Citrus, 2015 *

Insecticidal Control of Citrus Thrips in Citrus, 2015 * Arthropod Management Tests, 2016, 1–1 doi: 10.1093/amt/tsw056 Section D: Citrus, Nuts, and Other Tree Fruits NAVEL ORANGE: Citrus x sinensis (L.) Osbeck, ‘Cara Cara’ Insecticidal Control of Citrus Thrips in Citrus, 2015* 1,2 3 1 Robert A. Van Steenwyk, Barat Bisabri, Benjamin J. Wong, and Ruth A. Poliakon Department of E.S.P.M., 130 Mulford Hall – 3114, University of California, Berkeley, CA 94720-3114, Phone: (510) 643-5159, Fax: (510) 643-5438 (bobvanst@berkeley.edu; benjwong@berkeley.edu; poliakon@berkeley.edu), 2 3 Corresponding author, e-mail: bobvanst@berkeley.edu, and Bisabri Ag Resarch & Consulting, 24129 Bell Rd., Newman, CA 95360 (baratbisabri@gmail.com) Subject Editor: David Haviland Orange j Citrus sinensis Citrus Thrips (CT), Scirtothrips citri (Moulton) A study was conducted to evaluate the efficacy of 10 different in- treatments were randomized within each block. This resulted in secticides for the control of CT in citrus. The study was conducted about the same number of thrips in each treatment at the beginning on 3-year-old “Cara Cara” navel oranges in an orchard near of the trial. Data were analyzed using ANOVA with mean separ- Newman, CA. Trees were spaced at 5.5 m  4.3 m. There were 12 ation using Fisher’s protected LSD (P  0.05). treatments replicated four times in an RCB design. Materials were Delegate, Sequoia, Veratran, Agri-Mek, Sivanto, and Exirel with applied using a backpack mist-blower sprayer with a finished vol- oil reduced thrips counts through 14 DAT. Exirel with horticultural ume of 374.2 liters/ha. Treatments were applied 4 Aug. The com- oil resulted in less thrips than when Exirel was used without oil on bined number of CT adults and nymphs were counted on 30 Jul all evaluation dates, but the reduction was only significant 14 DAT. (pre-treatment), 7 Aug (3 DAT), 11 Aug (7 DAT), 18 Aug (14 The two diamide materials (Exirel and Cyclaniliprole) with oil had DAT), and 25 Aug (21 DAT) by tapping two 15 cm branches three similar efficacy on all evaluation dates. Danitol, Belay, and Bexar all times each against a black paper and counting the CT after each tap. reduced thrips counts through 7 DAT. By 21 DAT thrips counts in The number of CT in the pre-treatment count was used to equalize all plots were statistically equivalent or higher than the untreated the treatments. Blocks were assigned based on CT density and check (Table 1). Table 1 Treatment Rate form prod/ha Mean no. citrus thrips 30 Jul pre-count 7 Aug 3 DAT 11 Aug 7 DAT 18 Aug 14 DAT 25 Aug 21 DAT Delegate 25WG 448.3 g 6.8 a 0.0 c 3.3 d 8.5 f 33.8 e Sequoia 2SC 292.3 ml 6.0 a 1.3 bc 12.8 bc 28.3 cdef 66.3 bcde Veratran D 16.8 kg 6.3 a 2.3 bc 3.0 d 16.5 ef 59.3 cde Agri-Mek 0.7SC 292.3 ml 6.3 a 3.5 bc 9.0 cd 25.5 cdef 101.3 abcd Sivanto 1.67SL 1,023.1 ml 6.3 a 5.5 b 13.3 bc 26.3 cdef 75.3 bcde Exirel 0.83SE 1,498.1 ml 6.3 a 2.5 bc 1.5 d 18.0 def 73.8 bcde Exirel 0.83SE 1,498.1 ml 6.0 a 3.3 bc 3.0 d 46.0 abc 49.8 de IKI-3601 50SL 1,607.7 ml 6.3 a 5.0 b 2.0 d 38.3 abcd 51.5 cde Danitol 2.4EC 1,556.6 ml 6.3 a 5.5 b 20.5 b 54.5 a 106.3 abc Belay 2.13SC 420.3 g 6.3 a 1.8 bc 10.0 cd 29.5 bcde 139.3 a Bexar 1.31SC 336.2 ml 6.3 a 4.3 bc 13.5 bc 45.5 abc 115.0 ab Untreated check – 6.3 a 10.0 a 29.8 a 49.8 ab 57.3 cde Means followed by the same letter in a column were not significantly different (means separated using Fisher’s protected LSD, P  0.05). Adult and nymph citrus thrips combined. Treatments include 0.5% v/v PHT 415 Supreme Spray Oil. *This research was supported by industry gifts of pesticides and/or research funding. V The Author 2016. Published by Oxford University Press on behalf of the Entomological Society of America. All rights reserved. For permissions, please e-mail: journals.permissions@oup.com 1 This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/4.0/), which permits non-commercial re-use, distribution, and reproduction in any medium, provided the original work is properly cited. For commercial re-use, please contact journals.permissions@oup.com http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Arthropod Management Tests Oxford University Press

Insecticidal Control of Citrus Thrips in Citrus, 2015 *

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Oxford University Press
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© The Author 2016. Published by Oxford University Press on behalf of the Entomological Society of America. All rights reserved. For permissions, please e-mail: journals.permissions@oup.com
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Abstract

Arthropod Management Tests, 2016, 1–1 doi: 10.1093/amt/tsw056 Section D: Citrus, Nuts, and Other Tree Fruits NAVEL ORANGE: Citrus x sinensis (L.) Osbeck, ‘Cara Cara’ Insecticidal Control of Citrus Thrips in Citrus, 2015* 1,2 3 1 Robert A. Van Steenwyk, Barat Bisabri, Benjamin J. Wong, and Ruth A. Poliakon Department of E.S.P.M., 130 Mulford Hall – 3114, University of California, Berkeley, CA 94720-3114, Phone: (510) 643-5159, Fax: (510) 643-5438 (bobvanst@berkeley.edu; benjwong@berkeley.edu; poliakon@berkeley.edu), 2 3 Corresponding author, e-mail: bobvanst@berkeley.edu, and Bisabri Ag Resarch & Consulting, 24129 Bell Rd., Newman, CA 95360 (baratbisabri@gmail.com) Subject Editor: David Haviland Orange j Citrus sinensis Citrus Thrips (CT), Scirtothrips citri (Moulton) A study was conducted to evaluate the efficacy of 10 different in- treatments were randomized within each block. This resulted in secticides for the control of CT in citrus. The study was conducted about the same number of thrips in each treatment at the beginning on 3-year-old “Cara Cara” navel oranges in an orchard near of the trial. Data were analyzed using ANOVA with mean separ- Newman, CA. Trees were spaced at 5.5 m  4.3 m. There were 12 ation using Fisher’s protected LSD (P  0.05). treatments replicated four times in an RCB design. Materials were Delegate, Sequoia, Veratran, Agri-Mek, Sivanto, and Exirel with applied using a backpack mist-blower sprayer with a finished vol- oil reduced thrips counts through 14 DAT. Exirel with horticultural ume of 374.2 liters/ha. Treatments were applied 4 Aug. The com- oil resulted in less thrips than when Exirel was used without oil on bined number of CT adults and nymphs were counted on 30 Jul all evaluation dates, but the reduction was only significant 14 DAT. (pre-treatment), 7 Aug (3 DAT), 11 Aug (7 DAT), 18 Aug (14 The two diamide materials (Exirel and Cyclaniliprole) with oil had DAT), and 25 Aug (21 DAT) by tapping two 15 cm branches three similar efficacy on all evaluation dates. Danitol, Belay, and Bexar all times each against a black paper and counting the CT after each tap. reduced thrips counts through 7 DAT. By 21 DAT thrips counts in The number of CT in the pre-treatment count was used to equalize all plots were statistically equivalent or higher than the untreated the treatments. Blocks were assigned based on CT density and check (Table 1). Table 1 Treatment Rate form prod/ha Mean no. citrus thrips 30 Jul pre-count 7 Aug 3 DAT 11 Aug 7 DAT 18 Aug 14 DAT 25 Aug 21 DAT Delegate 25WG 448.3 g 6.8 a 0.0 c 3.3 d 8.5 f 33.8 e Sequoia 2SC 292.3 ml 6.0 a 1.3 bc 12.8 bc 28.3 cdef 66.3 bcde Veratran D 16.8 kg 6.3 a 2.3 bc 3.0 d 16.5 ef 59.3 cde Agri-Mek 0.7SC 292.3 ml 6.3 a 3.5 bc 9.0 cd 25.5 cdef 101.3 abcd Sivanto 1.67SL 1,023.1 ml 6.3 a 5.5 b 13.3 bc 26.3 cdef 75.3 bcde Exirel 0.83SE 1,498.1 ml 6.3 a 2.5 bc 1.5 d 18.0 def 73.8 bcde Exirel 0.83SE 1,498.1 ml 6.0 a 3.3 bc 3.0 d 46.0 abc 49.8 de IKI-3601 50SL 1,607.7 ml 6.3 a 5.0 b 2.0 d 38.3 abcd 51.5 cde Danitol 2.4EC 1,556.6 ml 6.3 a 5.5 b 20.5 b 54.5 a 106.3 abc Belay 2.13SC 420.3 g 6.3 a 1.8 bc 10.0 cd 29.5 bcde 139.3 a Bexar 1.31SC 336.2 ml 6.3 a 4.3 bc 13.5 bc 45.5 abc 115.0 ab Untreated check – 6.3 a 10.0 a 29.8 a 49.8 ab 57.3 cde Means followed by the same letter in a column were not significantly different (means separated using Fisher’s protected LSD, P  0.05). Adult and nymph citrus thrips combined. Treatments include 0.5% v/v PHT 415 Supreme Spray Oil. *This research was supported by industry gifts of pesticides and/or research funding. V The Author 2016. Published by Oxford University Press on behalf of the Entomological Society of America. All rights reserved. For permissions, please e-mail: journals.permissions@oup.com 1 This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/4.0/), which permits non-commercial re-use, distribution, and reproduction in any medium, provided the original work is properly cited. For commercial re-use, please contact journals.permissions@oup.com

Journal

Arthropod Management TestsOxford University Press

Published: Jan 1, 2016

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