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Insecticide Trial for Citrus Red Mite and Effects on the Predatory Mite Euseius tularensis, 2019

Insecticide Trial for Citrus Red Mite and Effects on the Predatory Mite Euseius tularensis, 2019 Downloaded from https://academic.oup.com/amt/article-abstract/45/1/tsaa016/5739527 by guest on 04 March 2020 applyparastyle "fig//caption/p[1]" parastyle "FigCapt" applyparastyle "fig" parastyle "Figure" Arthropod Management T ests, 45(1), 2020, 1–2 doi: 10.1093/amt/tsaa016 Section D: Citrus, Nuts, and Other Tree Fruits ORANGE: Citrus reticulata Blanco, ‘Tango’ mandarin HeadA=HeadB=HeadA=HeadB/HeadA Insecticide Trial for Citrus Red Mite and Effects on the HeadB=HeadC=HeadB=HeadC/HeadB Predatory Mite Euseius tularensis, 2019 HeadC=HeadD=HeadC=HeadD/HeadC 1, Extract3=HeadA=Extract1=HeadA Elizabeth E. Grafton-Cardwell and Stephanie Doria History=Text=History=Text_First Department of Entomology, University of California, Riverside, CA 92521, Phone: (559) 646-6591, Fax: (559) 646-6593 (sldoria@ucanr.edu) EDI_HeadA=EDI_HeadB=EDI_HeadA=EDI_HeadB/HeadA 1 and Corresponding author, e-mail: eegraftoncardwell@ucanr.edu EDI_HeadB=EDI_HeadC=EDI_HeadB=EDI_HeadC/HeadB Section Editor: David Haviland EDI_HeadC=EDI_HeadD=EDI_HeadC=EDI_HeadD/HeadC Citrus red mite | Panonychus citri (McGregor) EDI_Extract3=EDI_HeadA=EDI_Extract1=EDI_HeadA Predatory mite | Euseius tularensis Congdon ERR_HeadA=ERR_HeadB=ERR_HeadA=ERR_HeadB/HeadA ERR_HeadB=ERR_HeadC=ERR_HeadB=ERR_HeadC/HeadB Heavy densities of citrus red mite can affect tree health, yield, and mean number of pest or predatory mites per leaf were compared ERR_HeadC=ERR_HeadD=ERR_HeadC=ERR_HeadD/HeadC fruit quality. Various rates of pesticides were applied to 9-yr-old between treatments using one-way ANOVA after log(x+1) transfor- ERR_Extract3=ERR_HeadA=ERR_Extract1=ERR_HeadA ‘Tango’ mandarin trees at the Lindcove Research and Extension mation of the data after testing for an NS block effect. Means were Center, Exeter, California. Treatments were assigned to eight trees separated according to Fisher’s protected least significant difference per treatment on 21 Mar 2019, based on pretreatment counts of test (P < 0.05). adult citrus red mites and treatments arranged in an RCB design. Citrus red mite densities were significantly reduced for 2  wk Insecticide treatments combined with 0.5% Omni 6E oil were ap- by Magister, Nealta and Nexter and 1  wk by Fujimite compared plied at 200 psi and 200 gpa using a 100 gal high-pressure D30 di- with the untreated check (Table 1). Envidor did not significantly re- aphragm pump sprayer with mechanical agitation on 28 Mar. Mites duce citrus red mites compared with the untreated check. By wk were sampled on five leaves from the periphery of four quadrants of 4, the untreated check population declined significantly below sev- each sample tree (20 leaves per tree). The number of adult female eral of the treatments in response to predatory mites. Predatory citrus red mites found on the upper side of each leaf and the number mite E.  tularensis densities were significantly reduced on one date of motile stages of E. tularensis found on the underside of each leaf by Nealta and Envidor and two dates by FujiMite, Nexter, and were recorded every week for 4  wk after the first treatment. The Magister (Table 2). Table 1. Treatment/formulation Rate-amt Mean no. of female citrus red mites/leaf form/acre or vol 18 Mar 4 Apr 11 Apr 18 Apr 24 Apr Untreated Check __ 2.93a 3.28a 3.31a 1.35ab 0.24a FujiMite SC + Omni 6E oil 32.0 + 0.5% 2.99a 0.98b 1.01ab 1.98a 1.11b Nealta SC + Omni 6E oil 13.7 + 0.5% 3.08a 0.55b 1.16bc 1.83a 1.20b Magister SC + Omni 6E oil 32.0 + 0.5% 3.27a 0.12b 0.41c 0.83b 0.51ab Nexter SC + Dyne-Amic 17.0 + 0.5% 3.33a 0.29b 1.12bc 1.91a 0.83b Envidor 2 SC + Omni 6E oil 20.0 + 0.5% 3.53a 3.38a 2.74ab 2.27a 0.69ab F 0.1 4.47 3.2 1.09 1.75 5,42 P 0.99 0.02 0.02 0.38 0.14 Means within columns followed by the same letter are not significantly different (FPLSD, P > 0.05) after log (x + 1) transformation. Untransformed means are shown. oz (fl) product per acre. This research was supported by the California Citrus Research Board and industry gifts. © The Author(s) 2020. Published by Oxford University Press on behalf of Entomological Society of America. 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 Downloaded from https://academic.oup.com/amt/article-abstract/45/1/tsaa016/5739527 by guest on 04 March 2020 2 Arthropod Management T ests, 2020, Vol. XX, No. XX Table 2.  Treatment/ formulation Rate-amt Mean no. of Euseius tularensis/leaf form/acre or vol 18 Mar 4 Apr 11 Apr 18 Apr 24 Apr Untreated check 0.04a 0.13a 0.01ab 0.18a 0.11a FujiMite SC + Omni 6E oil 32.0 + 0.5% 0.06a 0.01b 0.01ab 0.03b 0.03a Nealta SC + Omni 6E oil 13.7 + 0.5% 0.06a 0.01b 0.04a 0.10ab 0.04a Magister SC + Omni 6E oil 32.0 + 0.5% 0.02a 0.01b 0.00b 0.00b 0.00a Nexter SC + Dyne-Amic 17.0 + 0.5% 0.09a 0.00b 0.00b 0.00b 0.00a Envidor 2 SC + Omni 6E oil 20.0 + 0.5% 0.04a 0.01b 0.01ab 0.04ab 0.02a F 0.75 2.34 3.20 2.20 0.71 5, 42 P 0.59 0.06 0.32 0.07 0.62 Means within columns followed by the same letter are not significantly different (FPLSD, P > 0.05) after log (x + 1) transformation. Untransformed means are shown. oz (fl) product per acre. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Arthropod Management Tests Oxford University Press

Insecticide Trial for Citrus Red Mite and Effects on the Predatory Mite Euseius tularensis, 2019

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Publisher
Oxford University Press
Copyright
© The Author(s) 2020. Published by Oxford University Press on behalf of Entomological Society of America.
eISSN
2155-9856
DOI
10.1093/amt/tsaa016
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Abstract

Downloaded from https://academic.oup.com/amt/article-abstract/45/1/tsaa016/5739527 by guest on 04 March 2020 applyparastyle "fig//caption/p[1]" parastyle "FigCapt" applyparastyle "fig" parastyle "Figure" Arthropod Management T ests, 45(1), 2020, 1–2 doi: 10.1093/amt/tsaa016 Section D: Citrus, Nuts, and Other Tree Fruits ORANGE: Citrus reticulata Blanco, ‘Tango’ mandarin HeadA=HeadB=HeadA=HeadB/HeadA Insecticide Trial for Citrus Red Mite and Effects on the HeadB=HeadC=HeadB=HeadC/HeadB Predatory Mite Euseius tularensis, 2019 HeadC=HeadD=HeadC=HeadD/HeadC 1, Extract3=HeadA=Extract1=HeadA Elizabeth E. Grafton-Cardwell and Stephanie Doria History=Text=History=Text_First Department of Entomology, University of California, Riverside, CA 92521, Phone: (559) 646-6591, Fax: (559) 646-6593 (sldoria@ucanr.edu) EDI_HeadA=EDI_HeadB=EDI_HeadA=EDI_HeadB/HeadA 1 and Corresponding author, e-mail: eegraftoncardwell@ucanr.edu EDI_HeadB=EDI_HeadC=EDI_HeadB=EDI_HeadC/HeadB Section Editor: David Haviland EDI_HeadC=EDI_HeadD=EDI_HeadC=EDI_HeadD/HeadC Citrus red mite | Panonychus citri (McGregor) EDI_Extract3=EDI_HeadA=EDI_Extract1=EDI_HeadA Predatory mite | Euseius tularensis Congdon ERR_HeadA=ERR_HeadB=ERR_HeadA=ERR_HeadB/HeadA ERR_HeadB=ERR_HeadC=ERR_HeadB=ERR_HeadC/HeadB Heavy densities of citrus red mite can affect tree health, yield, and mean number of pest or predatory mites per leaf were compared ERR_HeadC=ERR_HeadD=ERR_HeadC=ERR_HeadD/HeadC fruit quality. Various rates of pesticides were applied to 9-yr-old between treatments using one-way ANOVA after log(x+1) transfor- ERR_Extract3=ERR_HeadA=ERR_Extract1=ERR_HeadA ‘Tango’ mandarin trees at the Lindcove Research and Extension mation of the data after testing for an NS block effect. Means were Center, Exeter, California. Treatments were assigned to eight trees separated according to Fisher’s protected least significant difference per treatment on 21 Mar 2019, based on pretreatment counts of test (P < 0.05). adult citrus red mites and treatments arranged in an RCB design. Citrus red mite densities were significantly reduced for 2  wk Insecticide treatments combined with 0.5% Omni 6E oil were ap- by Magister, Nealta and Nexter and 1  wk by Fujimite compared plied at 200 psi and 200 gpa using a 100 gal high-pressure D30 di- with the untreated check (Table 1). Envidor did not significantly re- aphragm pump sprayer with mechanical agitation on 28 Mar. Mites duce citrus red mites compared with the untreated check. By wk were sampled on five leaves from the periphery of four quadrants of 4, the untreated check population declined significantly below sev- each sample tree (20 leaves per tree). The number of adult female eral of the treatments in response to predatory mites. Predatory citrus red mites found on the upper side of each leaf and the number mite E.  tularensis densities were significantly reduced on one date of motile stages of E. tularensis found on the underside of each leaf by Nealta and Envidor and two dates by FujiMite, Nexter, and were recorded every week for 4  wk after the first treatment. The Magister (Table 2). Table 1. Treatment/formulation Rate-amt Mean no. of female citrus red mites/leaf form/acre or vol 18 Mar 4 Apr 11 Apr 18 Apr 24 Apr Untreated Check __ 2.93a 3.28a 3.31a 1.35ab 0.24a FujiMite SC + Omni 6E oil 32.0 + 0.5% 2.99a 0.98b 1.01ab 1.98a 1.11b Nealta SC + Omni 6E oil 13.7 + 0.5% 3.08a 0.55b 1.16bc 1.83a 1.20b Magister SC + Omni 6E oil 32.0 + 0.5% 3.27a 0.12b 0.41c 0.83b 0.51ab Nexter SC + Dyne-Amic 17.0 + 0.5% 3.33a 0.29b 1.12bc 1.91a 0.83b Envidor 2 SC + Omni 6E oil 20.0 + 0.5% 3.53a 3.38a 2.74ab 2.27a 0.69ab F 0.1 4.47 3.2 1.09 1.75 5,42 P 0.99 0.02 0.02 0.38 0.14 Means within columns followed by the same letter are not significantly different (FPLSD, P > 0.05) after log (x + 1) transformation. Untransformed means are shown. oz (fl) product per acre. This research was supported by the California Citrus Research Board and industry gifts. © The Author(s) 2020. Published by Oxford University Press on behalf of Entomological Society of America. 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 Downloaded from https://academic.oup.com/amt/article-abstract/45/1/tsaa016/5739527 by guest on 04 March 2020 2 Arthropod Management T ests, 2020, Vol. XX, No. XX Table 2.  Treatment/ formulation Rate-amt Mean no. of Euseius tularensis/leaf form/acre or vol 18 Mar 4 Apr 11 Apr 18 Apr 24 Apr Untreated check 0.04a 0.13a 0.01ab 0.18a 0.11a FujiMite SC + Omni 6E oil 32.0 + 0.5% 0.06a 0.01b 0.01ab 0.03b 0.03a Nealta SC + Omni 6E oil 13.7 + 0.5% 0.06a 0.01b 0.04a 0.10ab 0.04a Magister SC + Omni 6E oil 32.0 + 0.5% 0.02a 0.01b 0.00b 0.00b 0.00a Nexter SC + Dyne-Amic 17.0 + 0.5% 0.09a 0.00b 0.00b 0.00b 0.00a Envidor 2 SC + Omni 6E oil 20.0 + 0.5% 0.04a 0.01b 0.01ab 0.04ab 0.02a F 0.75 2.34 3.20 2.20 0.71 5, 42 P 0.59 0.06 0.32 0.07 0.62 Means within columns followed by the same letter are not significantly different (FPLSD, P > 0.05) after log (x + 1) transformation. Untransformed means are shown. oz (fl) product per acre.

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Arthropod Management Tests – Oxford University Press

Published: Jan 1, 2020

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