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Colorado Potato Beetle Control on Potatoes with In-Furrow Treatments, 1993

Colorado Potato Beetle Control on Potatoes with In-Furrow Treatments, 1993 Downloaded from https://academic.oup.com/amt/article-abstract/19/1/113/4639303 by DeepDyve user on 02 August 2020 E: VEGETABLE CROPS Arthropod Management Tests, Vol. 19 113 POTATO: Solarium tuberosum L. 'Kennebec' James J. Linduska, Marylee Ross, and Nancy McShane (7 IE) Colorado potato beetle (CPB); Leptinotarsa decemlineata (Say) University of Maryland LESREC/Salisbury Facility 27664 Nanticoke Road Salisbury, MD 21801 COLORADO POTATO BEETLE CONTROL ON POTATOES, 1993: 'Kennebec' potatoes were planted in 20 foot rows on 8 Apr, '93. Plots consisted of a single treatment row. The distance between rows was 64 inches and the distance between plants within the row was 10 inches. Plots were arranged in a randomized complete block design with 4 replications. The soil was a Norfolk "A " loamy sand. All spray treatments were mixed in 1.5 gallons of water and applied with a custom built compressed air row crop sprayer. Each row was covered by 6 drop nozzles delivering 50 gal/ acre at 28 psi. Treatments were applied 21, 27 May; 2, 9, 14, 16, and 22 Jun. Trigard treatments were applied 21 May; 2 and 14 Jun. Novodor was applied 21 and 27 May. These same plots were treated with Kryocide thereafter on 2, 9, 14 and 16 Jun. Plots were treated with Vydate 2L 0.75 lb AI/ acre on 22 Jun to control Colorado potato beetle adults. In evaluating the treatments, direct counts of the number of Colorado potato beetle adults, larvae and egg mass/10 plants and the % defoliation were recorded. Defoliation categories were assigned using a pretransformed defoliation rating scale, based on dividing 90° into 13 steps corresponding to arcsin transformation values (Little & Hill 1978). Yields were taken on 28 Jul from 20 feet of row. Insect pressure was moderately heavy. Yield US 1st and 2nd 3rd and 4th % Defoli­ #1 per instar instar Adults ation 20 ft row Treatment Rate/acre 4 Jun 4 Jun 18 Jun 21 Jul 28 Jul Untreated 137.50 a 181.00a 146.25 a 100% a 0.55 b Kryocide 96WP 9.6 lb AI 2.50 b 0.00 b 32.75 c 43.90 b 12.46 a Novodor FL 2q t 2.75 b 2.75 b 31.50 c 56.10 b 12.35 a Foil BFC FL 3 qt 2.50 b 1.50 b 23.50 c 53.05 b 11.06 a Foil BFC FL 2q t 0.75 b 1.00 b 44.75 c 64.88 b 9.99 a M-Trak FL 3q t 0.25 b 0.25 b 22.75 c 53.05 b 8.49 a M-Trak FL 2 qt 2.50 b 1.00 b 41.25 c 64.88 b 12.26 a M-Trak FL 3 qt 1.50 b 1.25 b 78.40 a-b 10.70 a 27.75 c Trigard 75WP 0.125 lb AI 34.00 b 2.25 b 96.25 b 64.88 b 7.05 a Trigard 75WP 0.251 lb AI 8.50 b 1.00 b 56.50 c 59.03 b 8.70 a Trigard 75WP 0.5 lb AI 5.75 b 0.00 b 54.00 c 78.40 a-b 8.67 a Novodor FL 0.00 b 0.50 b 46.75 c 73.10 b 8.32 a 3 qt Kryocide 96WP 9.6 lb AI 'Egg hatch and every 10-14 days. Means followed by the same letter do not differ at the 5% level based on DMRT. POTATO: Solarium tuberosum L. 'Kennebec' James J. Linduska, Marylee Ross, and Nancy McShane (72E) Colorado potato beetle (CPB); Leptinotarsa decemlineata (Say) University of Maryland LESREC/Salisbury Facility 27664 Nanticoke Road Salisbury, MD 21801 COLORADO POTATO BEETLE CONTROL ON POTATOES WITH IN-FURROW TREATMENTS, 1993: Kennebec' potatoes were planted in 20 foot rows on 13 Apr, '93. Plots consisted of a single treatment row. The distance between rows was 64 inches and the distance between plants within the row was 10 inches. Plots were arranged in a randomized complete block design with 4 replications. The soil was a Norfolk "A" loamy sand. Initial furrow H 0 treatments were applied to the seed at the rate of 20/gal per acre with a small sprinkle can. Furadan layby treatments were applied at a rate of 20/gal per acre on 9 Jun. In evaluating the treatments, direct counts of the number of Colorado potato beetle adults, larvae and egg mass/10 plants and the % defoliation were recorded. Defoliation categories were assigned using a pretransformed defoliation rating scale, based on dividing 90° into 13 steps corresponding to arcsin transformation values (Little & Hill 1978). Yields were taken on 22 Jul from 20-ft. of row. Insect pressure was moderately heavy. Yield US Rate 1st and 2nd 3rd and 4th % Defoli­ #1 per lb AI/ instar instar Adults ation 25 ft row Treatment acre 4 Jun 24 Jun 24 Jun 4 Jun 12 Jul Untreated — 80.75 N.S. 170.25 a 62.75 b 94.30 a 1.15c Admire 2F 0.3 5.00 3.75 b 38.00 b 1.40 d 11.63 a Furadan 4F 0.3 48.50 130.75 a 118.25 a 78.40 b 4.38 b-c Furadan 4F + 1.5 39.75 151.25 a 60.50 b 56.10 c 6.36 b Furadan 4F 1.5 Admire 2F + 0.15 44.75 22.75 a 34.50 b 2.48 d 14.66 a Furadan 4F 1.5 Means followed by the same letter do not differ at the 5% level based on DMRT. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Arthropod Management Tests Oxford University Press

Colorado Potato Beetle Control on Potatoes with In-Furrow Treatments, 1993

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Publisher
Oxford University Press
Copyright
© 1994, Entomological Society of America
eISSN
2155-9856
DOI
10.1093/amt/19.1.113a
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Abstract

Downloaded from https://academic.oup.com/amt/article-abstract/19/1/113/4639303 by DeepDyve user on 02 August 2020 E: VEGETABLE CROPS Arthropod Management Tests, Vol. 19 113 POTATO: Solarium tuberosum L. 'Kennebec' James J. Linduska, Marylee Ross, and Nancy McShane (7 IE) Colorado potato beetle (CPB); Leptinotarsa decemlineata (Say) University of Maryland LESREC/Salisbury Facility 27664 Nanticoke Road Salisbury, MD 21801 COLORADO POTATO BEETLE CONTROL ON POTATOES, 1993: 'Kennebec' potatoes were planted in 20 foot rows on 8 Apr, '93. Plots consisted of a single treatment row. The distance between rows was 64 inches and the distance between plants within the row was 10 inches. Plots were arranged in a randomized complete block design with 4 replications. The soil was a Norfolk "A " loamy sand. All spray treatments were mixed in 1.5 gallons of water and applied with a custom built compressed air row crop sprayer. Each row was covered by 6 drop nozzles delivering 50 gal/ acre at 28 psi. Treatments were applied 21, 27 May; 2, 9, 14, 16, and 22 Jun. Trigard treatments were applied 21 May; 2 and 14 Jun. Novodor was applied 21 and 27 May. These same plots were treated with Kryocide thereafter on 2, 9, 14 and 16 Jun. Plots were treated with Vydate 2L 0.75 lb AI/ acre on 22 Jun to control Colorado potato beetle adults. In evaluating the treatments, direct counts of the number of Colorado potato beetle adults, larvae and egg mass/10 plants and the % defoliation were recorded. Defoliation categories were assigned using a pretransformed defoliation rating scale, based on dividing 90° into 13 steps corresponding to arcsin transformation values (Little & Hill 1978). Yields were taken on 28 Jul from 20 feet of row. Insect pressure was moderately heavy. Yield US 1st and 2nd 3rd and 4th % Defoli­ #1 per instar instar Adults ation 20 ft row Treatment Rate/acre 4 Jun 4 Jun 18 Jun 21 Jul 28 Jul Untreated 137.50 a 181.00a 146.25 a 100% a 0.55 b Kryocide 96WP 9.6 lb AI 2.50 b 0.00 b 32.75 c 43.90 b 12.46 a Novodor FL 2q t 2.75 b 2.75 b 31.50 c 56.10 b 12.35 a Foil BFC FL 3 qt 2.50 b 1.50 b 23.50 c 53.05 b 11.06 a Foil BFC FL 2q t 0.75 b 1.00 b 44.75 c 64.88 b 9.99 a M-Trak FL 3q t 0.25 b 0.25 b 22.75 c 53.05 b 8.49 a M-Trak FL 2 qt 2.50 b 1.00 b 41.25 c 64.88 b 12.26 a M-Trak FL 3 qt 1.50 b 1.25 b 78.40 a-b 10.70 a 27.75 c Trigard 75WP 0.125 lb AI 34.00 b 2.25 b 96.25 b 64.88 b 7.05 a Trigard 75WP 0.251 lb AI 8.50 b 1.00 b 56.50 c 59.03 b 8.70 a Trigard 75WP 0.5 lb AI 5.75 b 0.00 b 54.00 c 78.40 a-b 8.67 a Novodor FL 0.00 b 0.50 b 46.75 c 73.10 b 8.32 a 3 qt Kryocide 96WP 9.6 lb AI 'Egg hatch and every 10-14 days. Means followed by the same letter do not differ at the 5% level based on DMRT. POTATO: Solarium tuberosum L. 'Kennebec' James J. Linduska, Marylee Ross, and Nancy McShane (72E) Colorado potato beetle (CPB); Leptinotarsa decemlineata (Say) University of Maryland LESREC/Salisbury Facility 27664 Nanticoke Road Salisbury, MD 21801 COLORADO POTATO BEETLE CONTROL ON POTATOES WITH IN-FURROW TREATMENTS, 1993: Kennebec' potatoes were planted in 20 foot rows on 13 Apr, '93. Plots consisted of a single treatment row. The distance between rows was 64 inches and the distance between plants within the row was 10 inches. Plots were arranged in a randomized complete block design with 4 replications. The soil was a Norfolk "A" loamy sand. Initial furrow H 0 treatments were applied to the seed at the rate of 20/gal per acre with a small sprinkle can. Furadan layby treatments were applied at a rate of 20/gal per acre on 9 Jun. In evaluating the treatments, direct counts of the number of Colorado potato beetle adults, larvae and egg mass/10 plants and the % defoliation were recorded. Defoliation categories were assigned using a pretransformed defoliation rating scale, based on dividing 90° into 13 steps corresponding to arcsin transformation values (Little & Hill 1978). Yields were taken on 22 Jul from 20-ft. of row. Insect pressure was moderately heavy. Yield US Rate 1st and 2nd 3rd and 4th % Defoli­ #1 per lb AI/ instar instar Adults ation 25 ft row Treatment acre 4 Jun 24 Jun 24 Jun 4 Jun 12 Jul Untreated — 80.75 N.S. 170.25 a 62.75 b 94.30 a 1.15c Admire 2F 0.3 5.00 3.75 b 38.00 b 1.40 d 11.63 a Furadan 4F 0.3 48.50 130.75 a 118.25 a 78.40 b 4.38 b-c Furadan 4F + 1.5 39.75 151.25 a 60.50 b 56.10 c 6.36 b Furadan 4F 1.5 Admire 2F + 0.15 44.75 22.75 a 34.50 b 2.48 d 14.66 a Furadan 4F 1.5 Means followed by the same letter do not differ at the 5% level based on DMRT.

Journal

Arthropod Management TestsOxford University Press

Published: Jan 1, 1994

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