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EVALUATION OF GAUCHO, CRUISER AND TEMIK, WITH AND WITHOUT AN ADDITIONAL BROADCAST APPLICATION, FOR CONTROL OF THRIPS, 2003.

EVALUATION OF GAUCHO, CRUISER AND TEMIK, WITH AND WITHOUT AN ADDITIONAL BROADCAST APPLICATION,... (F49) COTTON: Gossypium hirsutum L.; 'SG 215 BR/RR' EVALUATION OF GAUCHO, CRUISER AND TEMIK, WITH AND WITHOUT AN ADDITIONAL BROADCAST APPLICATION, FOR CONTROL OF THRIPS, 2003. D. A. Herbert, Jr. Virginia Tech Tidewater Agri. Res. & Ext. Ctr. 6321 Holland Road Suffolk, VA 23437 Phone: (757) 657-6450, Ext. 122 Fax: (757) 657-9333 E-mail: herbert@vt.edu S. Malone Tobacco thrips (TT): Frankliniella fusca (Hinds) Gaucho, Cruiser and Temik, with and without an additional broadcast treatment of Orthene, were evaluated for control of thrips in Virginia cotton. 'Suregrow 215 BR/RR' cotton was planted 29 Apr at the Virginia Tech Tidewater Agric. Res. & Ext. Ctr., Suffolk, VA, using 36-inch row spacing. In-furrow (IF) treatments were applied into the seed furrow at the time of planting using tractor-mounted inverted jars with lid holes calibrated to deliver exact amounts via gravity. Gaucho and Cruiser seed treatments (ST) were applied commercially. The foliar treatments were broadcast (BC) with a CO pressurized backpack sprayer calibrated to deliver 14.3 gpa at 18 psi through 8002VS nozzles spaced 18 inches apart on the spray boom. Foliar applications were made on 20 May at the first sign of true leaf emergence after the cotyledon stage. A RCB experimental design was used with four replicates; plots were 4 rows by 40 ft. Thrips injury to plants was determined by visually rating injury using a 0 to 5 scale, where 0 = no thrips induced plant injury, 1 = 10% injured leaves, no bud injury; 2 = 25% injured leaves, no bud injury; 3 = 75% injured leaves, and 0 to 25% buds injured; 4 = 90% injured leaves, and greater than 25% buds injured; and 5 = dead plants. Yield was determined by harvesting the 2 center rows of each plot (80 row ft) using a commercial 2-row John Deere cotton combine. Sub-samples were ginned to determine lint versus seed and trash weight (39% lint, 61% seed and trash). Data were analyzed using ANOVA and means were separated using LSD (P = 0.01). Thrips injury reached a peak of 3.9 on 3 Jun in the untreated check. All treatments had significantly lower plant injury levels compared with the check on all sample dates. Orthene broadcast treatments reduced injury when applied to seed treatments (Gaucho and Cruiser 5FS) compared with seed treatments alone, but generally did not improve Temik 15G alone treatments. Both Temik treatment rates generally resulted in less plant injury compared with seed treatments, both alone and with the additional Orthene broadcast. All treatments, except the seed treatments, alone, resulted in significantly higher yields compared with the check. The highest yields were achieved with Temik treatments when followed by the Orthene broadcast. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Arthropod Management Tests Oxford University Press

EVALUATION OF GAUCHO, CRUISER AND TEMIK, WITH AND WITHOUT AN ADDITIONAL BROADCAST APPLICATION, FOR CONTROL OF THRIPS, 2003.

Herbert, D. A.; Malone, S.
Arthropod Management Tests , Volume 29 (1) – Jan 1, 2004
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Publisher
Oxford University Press
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© Published by Oxford University Press.
eISSN
2155-9856
DOI
10.1093/amt/29.1.F49
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Abstract

(F49) COTTON: Gossypium hirsutum L.; 'SG 215 BR/RR' EVALUATION OF GAUCHO, CRUISER AND TEMIK, WITH AND WITHOUT AN ADDITIONAL BROADCAST APPLICATION, FOR CONTROL OF THRIPS, 2003. D. A. Herbert, Jr. Virginia Tech Tidewater Agri. Res. & Ext. Ctr. 6321 Holland Road Suffolk, VA 23437 Phone: (757) 657-6450, Ext. 122 Fax: (757) 657-9333 E-mail: herbert@vt.edu S. Malone Tobacco thrips (TT): Frankliniella fusca (Hinds) Gaucho, Cruiser and Temik, with and without an additional broadcast treatment of Orthene, were evaluated for control of thrips in Virginia cotton. 'Suregrow 215 BR/RR' cotton was planted 29 Apr at the Virginia Tech Tidewater Agric. Res. & Ext. Ctr., Suffolk, VA, using 36-inch row spacing. In-furrow (IF) treatments were applied into the seed furrow at the time of planting using tractor-mounted inverted jars with lid holes calibrated to deliver exact amounts via gravity. Gaucho and Cruiser seed treatments (ST) were applied commercially. The foliar treatments were broadcast (BC) with a CO pressurized backpack sprayer calibrated to deliver 14.3 gpa at 18 psi through 8002VS nozzles spaced 18 inches apart on the spray boom. Foliar applications were made on 20 May at the first sign of true leaf emergence after the cotyledon stage. A RCB experimental design was used with four replicates; plots were 4 rows by 40 ft. Thrips injury to plants was determined by visually rating injury using a 0 to 5 scale, where 0 = no thrips induced plant injury, 1 = 10% injured leaves, no bud injury; 2 = 25% injured leaves, no bud injury; 3 = 75% injured leaves, and 0 to 25% buds injured; 4 = 90% injured leaves, and greater than 25% buds injured; and 5 = dead plants. Yield was determined by harvesting the 2 center rows of each plot (80 row ft) using a commercial 2-row John Deere cotton combine. Sub-samples were ginned to determine lint versus seed and trash weight (39% lint, 61% seed and trash). Data were analyzed using ANOVA and means were separated using LSD (P = 0.01). Thrips injury reached a peak of 3.9 on 3 Jun in the untreated check. All treatments had significantly lower plant injury levels compared with the check on all sample dates. Orthene broadcast treatments reduced injury when applied to seed treatments (Gaucho and Cruiser 5FS) compared with seed treatments alone, but generally did not improve Temik 15G alone treatments. Both Temik treatment rates generally resulted in less plant injury compared with seed treatments, both alone and with the additional Orthene broadcast. All treatments, except the seed treatments, alone, resulted in significantly higher yields compared with the check. The highest yields were achieved with Temik treatments when followed by the Orthene broadcast.

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Arthropod Management Tests – Oxford University Press

Published: Jan 1, 2004

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