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USE OF TALUS, SAFARI, DISTANCE, FLAGSHIP, AND TRISTAR FOR CONTROL OF CITRUS MEALYBUGS, 2004A

USE OF TALUS, SAFARI, DISTANCE, FLAGSHIP, AND TRISTAR FOR CONTROL OF CITRUS MEALYBUGS, 2004A (G14) COLEUS: Solenostemon scutellariodes (L.) Codd USE OF TALUS, SAFARI, DISTANCE, FLAGSHIP, AND TRISTAR FOR CONTROL OF CITRUS MEALYBUGS, 2004A Scott W. Ludwig Texas Cooperative Extension P.O. Box 38 Overton, TX 75684 Phone: (903) 834-6191 Fax: (903) 834-6257 E-mail: swludwig@ag.tamu.edu Citrus mealybug: Planococcus citri (Risso) The objective of this study was to evaluate the efficacy of Talus, Safari, Distance, Flagship and Tristar against citrus mealybugs, to expand the product’s label through the IR-4 Project. The trial was conducted in a greenhouse at the Texas A&M University Agricultural Research and Extension Center at Overton, TX. Coleus plants were grown in 6.5-inch azalea pots containing Sun Gro LC1 Mix. Plants were fertilized daily with 20-10-20 fertilizer at 100 ppm. Plants were set up in a RCB design with five replicates. The plants contained adults and nymphs at the start of the trial. Treatments were applied using a CO backpack sprayer with an 8002VS tee-jet flat spray nozzle at 35 psi. All foliar insecticide treatments included a non-ionic organosilicone (Thoroughbred 5 gal/100 gal). Safari drenches were applied as 4 oz of liquid per pot. All treatments were applied on 9 or 15 Jul 2004. Numbers of mealybugs were monitored on the same two inches of plant stem on 9 Jul (0 DAT), 15 Jul (6 DAT), 22 Jul (13 DAT), 30 Jul (21 DAT), and 6 Aug (28 DAT). Data were transformed using a logarithmic transformation [log10 (x + 1)] and were subjected to ANOVA. Means separation was accomplished using LSD (P ≤ 0.05). The mealybug population on the control plants declined in three of the replicates. This explains why statistical differences did not start to occur until 21 and 28 DAT. All systemic insecticides, Safari, Flagship, and TriStar, provided excellent control of the mealybug by 13 DAT. Talus treatments and the 32 fl oz Distance rates proved control by 21 DAT. Mean no. mealybugs/2 inches of plant stem Treatment/ Rate amt Application formulation product/100 gal method 0 DAT 6 DAT 13 DAT 21 DAT 28 DAT Talus 70WP 21.5oz Foliar 22.8a 17.8abc 27.3ab 13.8ab 5.5b Talus 70WP 43oz Foliar 10.5a 12.0abcd 23.8abc 6.8bc 6.5bc Talus 70WP 86oz Foliar 16.5a 24.3abcd 22.8bcd 1.0cde 1.8bc Safari 20SG 12oz Drench 21.5a 16.5abcd 11.3cdef 3.0cde 0.0c Safari 20SG 24oz Drench 17.8a 10.8abcd 2.3c-g 1.5cde 0.3c Safari 20SG 48oz Drench 11.3a 5.5cd 1.5defg 0.5de 0.0c Distance 0.86EC 8floz Foliar 27.0a 41.3ab 57.8ab 68.3a 70.0a Distance 0.86EC 16floz Foliar 16.0a 37.3a 58.3a 58.8a 62.8a Distance 0.86EC 32floz Foliar 17.0a 9.0bcd 3.3c-g 0.0 e 0.0c Flagship 25WG 2oz Foliar 27.8a 14.5abcd 9.0bcd 0.8cde 0.8bc Flagship 25WG 4oz Foliar 28.3a 5.8cd 1.3 efg 0.3 e 0.0c Flagship 25WG 8oz Foliar 30.8a 4.3cd 0.5 fg 0.0 e 0.0c Tristar 70WP 1.1oz Foliar 11.8a 4.0cd 3.0c-g 0.8cde 0.0c Tristar 70WP 2.3oz Foliar 15.0a 3.0cd 1.0defg 0.0 e 0.0c Tristar 70WP 4.5oz Foliar 21.8a 1.3d 0.0 g 0.3 e 0.0 c Untreated check -- -- 27.8a 27.3abcd 19.0bcde 30.5bcd 54.0a Means within columns with the same letter are not significantly different (LSD, P > 0.05). http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Arthropod Management Tests Oxford University Press

USE OF TALUS, SAFARI, DISTANCE, FLAGSHIP, AND TRISTAR FOR CONTROL OF CITRUS MEALYBUGS, 2004A

Ludwig, Scott W.
Arthropod Management Tests , Volume 31 (1) – Jan 1, 2006
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Oxford University Press
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© Published by Oxford University Press.
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2155-9856
DOI
10.1093/amt/31.1.G14
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Abstract

(G14) COLEUS: Solenostemon scutellariodes (L.) Codd USE OF TALUS, SAFARI, DISTANCE, FLAGSHIP, AND TRISTAR FOR CONTROL OF CITRUS MEALYBUGS, 2004A Scott W. Ludwig Texas Cooperative Extension P.O. Box 38 Overton, TX 75684 Phone: (903) 834-6191 Fax: (903) 834-6257 E-mail: swludwig@ag.tamu.edu Citrus mealybug: Planococcus citri (Risso) The objective of this study was to evaluate the efficacy of Talus, Safari, Distance, Flagship and Tristar against citrus mealybugs, to expand the product’s label through the IR-4 Project. The trial was conducted in a greenhouse at the Texas A&M University Agricultural Research and Extension Center at Overton, TX. Coleus plants were grown in 6.5-inch azalea pots containing Sun Gro LC1 Mix. Plants were fertilized daily with 20-10-20 fertilizer at 100 ppm. Plants were set up in a RCB design with five replicates. The plants contained adults and nymphs at the start of the trial. Treatments were applied using a CO backpack sprayer with an 8002VS tee-jet flat spray nozzle at 35 psi. All foliar insecticide treatments included a non-ionic organosilicone (Thoroughbred 5 gal/100 gal). Safari drenches were applied as 4 oz of liquid per pot. All treatments were applied on 9 or 15 Jul 2004. Numbers of mealybugs were monitored on the same two inches of plant stem on 9 Jul (0 DAT), 15 Jul (6 DAT), 22 Jul (13 DAT), 30 Jul (21 DAT), and 6 Aug (28 DAT). Data were transformed using a logarithmic transformation [log10 (x + 1)] and were subjected to ANOVA. Means separation was accomplished using LSD (P ≤ 0.05). The mealybug population on the control plants declined in three of the replicates. This explains why statistical differences did not start to occur until 21 and 28 DAT. All systemic insecticides, Safari, Flagship, and TriStar, provided excellent control of the mealybug by 13 DAT. Talus treatments and the 32 fl oz Distance rates proved control by 21 DAT. Mean no. mealybugs/2 inches of plant stem Treatment/ Rate amt Application formulation product/100 gal method 0 DAT 6 DAT 13 DAT 21 DAT 28 DAT Talus 70WP 21.5oz Foliar 22.8a 17.8abc 27.3ab 13.8ab 5.5b Talus 70WP 43oz Foliar 10.5a 12.0abcd 23.8abc 6.8bc 6.5bc Talus 70WP 86oz Foliar 16.5a 24.3abcd 22.8bcd 1.0cde 1.8bc Safari 20SG 12oz Drench 21.5a 16.5abcd 11.3cdef 3.0cde 0.0c Safari 20SG 24oz Drench 17.8a 10.8abcd 2.3c-g 1.5cde 0.3c Safari 20SG 48oz Drench 11.3a 5.5cd 1.5defg 0.5de 0.0c Distance 0.86EC 8floz Foliar 27.0a 41.3ab 57.8ab 68.3a 70.0a Distance 0.86EC 16floz Foliar 16.0a 37.3a 58.3a 58.8a 62.8a Distance 0.86EC 32floz Foliar 17.0a 9.0bcd 3.3c-g 0.0 e 0.0c Flagship 25WG 2oz Foliar 27.8a 14.5abcd 9.0bcd 0.8cde 0.8bc Flagship 25WG 4oz Foliar 28.3a 5.8cd 1.3 efg 0.3 e 0.0c Flagship 25WG 8oz Foliar 30.8a 4.3cd 0.5 fg 0.0 e 0.0c Tristar 70WP 1.1oz Foliar 11.8a 4.0cd 3.0c-g 0.8cde 0.0c Tristar 70WP 2.3oz Foliar 15.0a 3.0cd 1.0defg 0.0 e 0.0c Tristar 70WP 4.5oz Foliar 21.8a 1.3d 0.0 g 0.3 e 0.0 c Untreated check -- -- 27.8a 27.3abcd 19.0bcde 30.5bcd 54.0a Means within columns with the same letter are not significantly different (LSD, P > 0.05).

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Arthropod Management Tests – Oxford University Press

Published: Jan 1, 2006

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