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Control of Lepidqpterous Larvae on Lettuce with Garlic, 1996

Control of Lepidqpterous Larvae on Lettuce with Garlic, 1996 Downloaded from https://academic.oup.com/amt/article-abstract/22/1/135/4640143 by DeepDyve user on 21 July 2020 E: VEGETABLE CROPS Arthropod Management Tests, Vol. 22 135 LETTUCE: Latuca sativae L. 'Empire' D. L. Kerns and T. Tellez (59E) Cabbage looper (CL); Trichoplusia ni (Hiibner) University of Arizona Department of Entomology Yuma Valley Agric. Center Yuma, Arizona 85364 (520) 782-3836 CONTROL OF LEPIDQPTEROUS LARVAE ON LETTUCE WITH GARLIC, 1996: Lettuce was direct seeded into double-rows on 42-in beds on 9 Sep at the Yuma Valley Agricultural Center, Yuma, AZ . Plots were four beds wide by 30 ft long. Each plot was bordered on each side by two blank beds. Plots were arranged in a RCB design with four replicates. Treatments were applied using a tractor-mounted sprayer with three TX-6 hollow cone nozzles per bed, calibrated to deliver 40 gpa at 200 psi. All treatment applications included Crocker's Fish Oil at 10 oz/acre and Kinetic non-ionic surfactant at 0.10% v/v. Treatments were split into two regimes (early-season and late-season). The early-season applications were applied on 1 Oct, 11 Oct and 17 Oct. The late-season applications were applied on 25 Oct, 31 Oct, 5 Nov and 18 Nov. Evaluations were made five to six days after each appli­ cation (7 Oct, 16 Oct , 22 Oct, 30 Oct, 4 Nov, 12 Nov and 25 Nov) by randomly selecting 10 plants per plot and counting the number of live small (1st and 2nd instar) and large (>2n d instar) CL larvae. Data were analyzed for treatment differences using ANOVA and an F protected LSD. Garlic Barrier did demonstrate some efficacy to CL, but did not seem to enhance significantly the performance of low rates of either Lannate or Mustang compared with those products used alone. EARLY-SEASON Mean no. C L larvae per plant 7 Oct 16 Oct 22 Oct Seasonal means" Treatment Rate/acre* small large small large small large small large Untreated Check 1.30 a 1.15a 1.18a 0.53 a 0.50 a 0.58 a 0.99 a 0.75 a Garlic Barrier 10 oz. 0.83 a 0.75 ab 0.70 a 0.25 a 0.45a 0.28 b 0.66 a 0.42 be Garlic Barrier 6.4 oz 1.10a 0.88 ab 0.57 a 0.28 a 0.40 a 0.32 ab 0.69 a 0.49 b Garlic Barrier 6.4 oz 0.55 a 0.13 b 0.55 a 0.53 b 0.58 a 0.25 a 0.56 b 0.30 c + Lannate 0.6 Lannate 0.6 0.78 a 0.60 b 0.57 a 0.20 a 0.13 a 0.10 b 0.49 a 0.30 c Means within a column followed by the same letter are not significantly different (P = 0.05, LSD). All treatments included Crocker's fish oil at 10 oz/acre and Kinetic non-ionic surfactant at 0.1 % v/v. 'Means of post-application evaluations. Rate expressed in lbs (AI)/acre unless otherwise noted. LATE-SEASON Mean no. CL larvae per plant 30 Oct 4 Nov 12 Nov 25 Nov Seasonal means" Treatment Rate/acre* small large small large small large small large small large Untreated Check 0.45 a 0.27 a 0.22 a 0.30 a 0.08 a 0.15 a 0.33 a 0.23 a 0.28 a 0.22 a Garlic Barrier 20 oz. 0.20 a 0.15 ab 0.10 a 0.38 a 0.03 a 0.13 a 0.05 b 0.25 a 0.10 a 0.23 ab Garlic Barrier 13 oz. 0.35 a 0.28 a 0.10 a 0.35 a 0.05 a 0.18 a 0.03 b 0.33 a 0.13 a 0.29 a Garlic Barrier 13 oz 0.30 a 0.08 b 0.03 a 0.03 a 0.05 a 0.15 a 0.05 b 0.13 a 0.11 a 0.10 c t- Mustan g 0.033 Mustang 0.033 0.10 a 0.08 b 0.13 a 0.25 a 0.03 a 0.08 a 0.05 b 0.20 a 0.08 a 0.15 be Means within a column followed by the same letter are not significantly different (P = 0.05, LSD). Vll treatments included Crocker's fish oil at 10 oz/acre and Kinetic non-ionic surfactant at 0.1 % v/v. Means of post-applications evaluations. Rate expressed in lbs (AI)/acre unless otherwise noted. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Arthropod Management Tests Oxford University Press

Control of Lepidqpterous Larvae on Lettuce with Garlic, 1996

Arthropod Management Tests , Volume 22 (1) – Jan 1, 1997

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Publisher
Oxford University Press
Copyright
© 1997 Entomological Society of America.
eISSN
2155-9856
DOI
10.1093/amt/22.1.135
Publisher site
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Abstract

Downloaded from https://academic.oup.com/amt/article-abstract/22/1/135/4640143 by DeepDyve user on 21 July 2020 E: VEGETABLE CROPS Arthropod Management Tests, Vol. 22 135 LETTUCE: Latuca sativae L. 'Empire' D. L. Kerns and T. Tellez (59E) Cabbage looper (CL); Trichoplusia ni (Hiibner) University of Arizona Department of Entomology Yuma Valley Agric. Center Yuma, Arizona 85364 (520) 782-3836 CONTROL OF LEPIDQPTEROUS LARVAE ON LETTUCE WITH GARLIC, 1996: Lettuce was direct seeded into double-rows on 42-in beds on 9 Sep at the Yuma Valley Agricultural Center, Yuma, AZ . Plots were four beds wide by 30 ft long. Each plot was bordered on each side by two blank beds. Plots were arranged in a RCB design with four replicates. Treatments were applied using a tractor-mounted sprayer with three TX-6 hollow cone nozzles per bed, calibrated to deliver 40 gpa at 200 psi. All treatment applications included Crocker's Fish Oil at 10 oz/acre and Kinetic non-ionic surfactant at 0.10% v/v. Treatments were split into two regimes (early-season and late-season). The early-season applications were applied on 1 Oct, 11 Oct and 17 Oct. The late-season applications were applied on 25 Oct, 31 Oct, 5 Nov and 18 Nov. Evaluations were made five to six days after each appli­ cation (7 Oct, 16 Oct , 22 Oct, 30 Oct, 4 Nov, 12 Nov and 25 Nov) by randomly selecting 10 plants per plot and counting the number of live small (1st and 2nd instar) and large (>2n d instar) CL larvae. Data were analyzed for treatment differences using ANOVA and an F protected LSD. Garlic Barrier did demonstrate some efficacy to CL, but did not seem to enhance significantly the performance of low rates of either Lannate or Mustang compared with those products used alone. EARLY-SEASON Mean no. C L larvae per plant 7 Oct 16 Oct 22 Oct Seasonal means" Treatment Rate/acre* small large small large small large small large Untreated Check 1.30 a 1.15a 1.18a 0.53 a 0.50 a 0.58 a 0.99 a 0.75 a Garlic Barrier 10 oz. 0.83 a 0.75 ab 0.70 a 0.25 a 0.45a 0.28 b 0.66 a 0.42 be Garlic Barrier 6.4 oz 1.10a 0.88 ab 0.57 a 0.28 a 0.40 a 0.32 ab 0.69 a 0.49 b Garlic Barrier 6.4 oz 0.55 a 0.13 b 0.55 a 0.53 b 0.58 a 0.25 a 0.56 b 0.30 c + Lannate 0.6 Lannate 0.6 0.78 a 0.60 b 0.57 a 0.20 a 0.13 a 0.10 b 0.49 a 0.30 c Means within a column followed by the same letter are not significantly different (P = 0.05, LSD). All treatments included Crocker's fish oil at 10 oz/acre and Kinetic non-ionic surfactant at 0.1 % v/v. 'Means of post-application evaluations. Rate expressed in lbs (AI)/acre unless otherwise noted. LATE-SEASON Mean no. CL larvae per plant 30 Oct 4 Nov 12 Nov 25 Nov Seasonal means" Treatment Rate/acre* small large small large small large small large small large Untreated Check 0.45 a 0.27 a 0.22 a 0.30 a 0.08 a 0.15 a 0.33 a 0.23 a 0.28 a 0.22 a Garlic Barrier 20 oz. 0.20 a 0.15 ab 0.10 a 0.38 a 0.03 a 0.13 a 0.05 b 0.25 a 0.10 a 0.23 ab Garlic Barrier 13 oz. 0.35 a 0.28 a 0.10 a 0.35 a 0.05 a 0.18 a 0.03 b 0.33 a 0.13 a 0.29 a Garlic Barrier 13 oz 0.30 a 0.08 b 0.03 a 0.03 a 0.05 a 0.15 a 0.05 b 0.13 a 0.11 a 0.10 c t- Mustan g 0.033 Mustang 0.033 0.10 a 0.08 b 0.13 a 0.25 a 0.03 a 0.08 a 0.05 b 0.20 a 0.08 a 0.15 be Means within a column followed by the same letter are not significantly different (P = 0.05, LSD). Vll treatments included Crocker's fish oil at 10 oz/acre and Kinetic non-ionic surfactant at 0.1 % v/v. Means of post-applications evaluations. Rate expressed in lbs (AI)/acre unless otherwise noted.

Journal

Arthropod Management TestsOxford University Press

Published: Jan 1, 1997

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