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Twospotted Spider Mite Control with Cm-006,1996

Twospotted Spider Mite Control with Cm-006,1996 Downloaded from https://academic.oup.com/amt/article-abstract/22/1/82/4639901 by DeepDyve user on 21 July 2020 82 Arthropod Management Tests, Vol. 22 D: CITRUS, NUTS, AND AVOCADOS WALNUT : Juglans regia L. 'Chandler' R. A. Van Steenwyk, (25D) Twospotted Spider mite (TSM); S. G. Sibbett and R. M. Nomoto Tetranychus urticae Koch Department of ESPM 201 Wellman Hall University of California Berkeley, CA 94720-3112 (510)643-5159 TWOSPOTTE D SPIDER MIT E CONTRO L WIT H CM-006,1996 : Th e study was conducted in a commercial walnut orchard near Visalia, CA on 3-year old trees. Six treatments were replicated six times in a RCB design. Each replicate consisted of an individual tree. There was a buffer row in each direction from the experimental trees. Treatments were applied on 10 Jul with a hand-held orchard sprayer operating at 200 psi and delivering 37.5 gpa of finished spray (0.5 ga/tree). TSM were sampled weekly from 10 Jul (pre-treatment sample) through 7 Aug by collecting five leaflets per replicate. The leaflets were brushed and TSM were counted under magnification (20 X) . CM-006 was evaluated against a very high and increasing TSM population. CM-006 combined with Volck Supreme oil was as efficacious as the grower standard (Omite) particularly at the higher rate of CM-006. There was a rate related effect of CM-006 which showed no phytotoxicity. Mean no. motile mites/5 leaflets Rate Total form/ Pretreatment (excluding Treatment 100 gal 10 Jul 16 Jul 23 Jul 30 Jul 6 Aug pre-treatment) 1. CM-006 1%EC 189 ml 323.0b 201.8ab 25.0a 5.2a 0.0a 232.0ab 2. CM-006 1%EC+ 189 ml 340.5b 22.8a 5.2a 0.8a 0.0a 28.8a Volck Supreme Oil 946 ml 3. CM-006 1%EC 378 ml 90.2ab 35.0a 3.2a 0.7a 0.0a 38.9a 4. CM-006 1%EC 378 ml 22.4a 7.7a 0.2a 0.3a 0.0a 8.2a Volck Supreme Oil 946 ml 5. Omite 30W 6050 g 189.7ab 2.7a 6.0a 0.3a 0.3a 9.3a 6. Untreated check 72.5ab 309.8b 126.3b 66.2b 0.8a 503.2b Means followed by the same letter within a column are not significantly different (Fisher's protected LSD, fsO.l ) http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Arthropod Management Tests Oxford University Press

Twospotted Spider Mite Control with Cm-006,1996

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Publisher
Oxford University Press
Copyright
© 1997 Entomological Society of America.
eISSN
2155-9856
DOI
10.1093/amt/22.1.82
Publisher site
See Article on Publisher Site

Abstract

Downloaded from https://academic.oup.com/amt/article-abstract/22/1/82/4639901 by DeepDyve user on 21 July 2020 82 Arthropod Management Tests, Vol. 22 D: CITRUS, NUTS, AND AVOCADOS WALNUT : Juglans regia L. 'Chandler' R. A. Van Steenwyk, (25D) Twospotted Spider mite (TSM); S. G. Sibbett and R. M. Nomoto Tetranychus urticae Koch Department of ESPM 201 Wellman Hall University of California Berkeley, CA 94720-3112 (510)643-5159 TWOSPOTTE D SPIDER MIT E CONTRO L WIT H CM-006,1996 : Th e study was conducted in a commercial walnut orchard near Visalia, CA on 3-year old trees. Six treatments were replicated six times in a RCB design. Each replicate consisted of an individual tree. There was a buffer row in each direction from the experimental trees. Treatments were applied on 10 Jul with a hand-held orchard sprayer operating at 200 psi and delivering 37.5 gpa of finished spray (0.5 ga/tree). TSM were sampled weekly from 10 Jul (pre-treatment sample) through 7 Aug by collecting five leaflets per replicate. The leaflets were brushed and TSM were counted under magnification (20 X) . CM-006 was evaluated against a very high and increasing TSM population. CM-006 combined with Volck Supreme oil was as efficacious as the grower standard (Omite) particularly at the higher rate of CM-006. There was a rate related effect of CM-006 which showed no phytotoxicity. Mean no. motile mites/5 leaflets Rate Total form/ Pretreatment (excluding Treatment 100 gal 10 Jul 16 Jul 23 Jul 30 Jul 6 Aug pre-treatment) 1. CM-006 1%EC 189 ml 323.0b 201.8ab 25.0a 5.2a 0.0a 232.0ab 2. CM-006 1%EC+ 189 ml 340.5b 22.8a 5.2a 0.8a 0.0a 28.8a Volck Supreme Oil 946 ml 3. CM-006 1%EC 378 ml 90.2ab 35.0a 3.2a 0.7a 0.0a 38.9a 4. CM-006 1%EC 378 ml 22.4a 7.7a 0.2a 0.3a 0.0a 8.2a Volck Supreme Oil 946 ml 5. Omite 30W 6050 g 189.7ab 2.7a 6.0a 0.3a 0.3a 9.3a 6. Untreated check 72.5ab 309.8b 126.3b 66.2b 0.8a 503.2b Means followed by the same letter within a column are not significantly different (Fisher's protected LSD, fsO.l )

Journal

Arthropod Management TestsOxford University Press

Published: Jan 1, 1997

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