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Pome Fruits

Pome Fruits Downloaded from https://academic.oup.com/amt/article-abstract/22/1/26/4639737 by DeepDyve user on 21 July 2020 26 Arthropod Management Tests, Vol. 22 A: POME FRUITS in a RCB design, separated by unsprayed buffer trees, and replicated twice in each orchard. All materials were applied on a 3-spray schedule, at 1st hatch (2 Jul), mid-hatch (16 Jul), and on 29 Jul. Check plots were not sprayed with insecticides during the test. Summer populations of larvae were compared by examining 20-50 growing terminals on each tree for live larvae on 9-11 Jul and again on 23-2 4 Jul. Fruit damage from the 1st summer generation of larvae was estimated initially on 1-2 Jul and again on 20-2 4 Aug by sampling up to 100 apples from each tree. At harvest (4 Oct for the 'Rome ' applies in the Nesbit Orchard and 14-15 Oct for the Tdared' applies in the Brown Orchard), up to 100 applies were sampled from each tree and OBLR damaged fruit was classified according to USDA grading standards into the categories of "Fancy", #1 , and culls. The standard materials, Lorsban and Dipel, were generally the most effective treatments in reducing larval infestations in growing terminals. OBLR fruit damage at harvest was much higher in the Brown orchard (49.5%) than in the Nesbitt orchard (19.4%), but the levels of control obtained in the var­ ious treatments were similar at the 2 locations. None of the new compounds tested were any more effective in protecting fruit from OBLR damage than the 2 standard materials, Dipel and Lorsban. Th e D F formulation of Dipel was slightly more effective in preventing fruit damage than the 2X formulation, although the differences between the 2 products were not significant. The higher rates of CM-001 were slightly more effective than the lower dosages in protecting fruit at harvest. BROWN ORCHARD % Damaged Fruit % Fruit in Different Categories at Harvest ) Infested Terminals Amt. form/100 gal 9 Jul 24 Jul 1 Aug 20 Aug clean Fancy #1 Culls Treatment 30.0ab 2.9abc 93.0fghi 1.5ab 3.0abc 2.5abc Dipel 2X 10.0 oz 22.0abc 1.5a 16.0ab 22.0a 0.6a 2.5ab 97.0i 1.0a 1.5ab 0.5a Dipel DF IO.OO Z Mattch L 32.0 oz 32.0abcd 48.0abcde 4.7ab 10.9cd 77.0bcd 6.0cde 7.5bc 9.5cd 32.0 oz 44.0cd 72.0ef 6.2ab 14.5de 68.0ab 9.0de 8.0c 15.0d MVP-2 32.0 oz 28.0 abed 40.0abcd 2.0a 3.2abc 81.5bcdef 9.0de 4.0abc 5.5abc M/C 2.4 oz 62.0cde 3.7ab 10.9cde 70.8bc 6.9cde 6.9bc 15.4d Compound A 20.0abc Compound A 3.5 oz 22.0abc 50.0abcde 4.3ab 12.5bcd 79.1bcde 7.0cde 3.5abc 10.4cd 10.8 oz 52.0bcde 3.2ab 5.4bcd 89.5defghi 5.5cd 2.5abc 2.5abc Larvin 3.2 SC 18.0abc 4.5ab 2.5abc CM-001 SC 95.0 mis 12.0a 70.0def 4.3bc 83.5cdefg 6.5cde 7.5bc 5.0bcd 89.5defghi 3.0bc 4.5abc 3.0abc CM-001 SC 190.0 mis 28.0abcd 66.0cdef 1.1a CM-001 SC 380.0 mis 44.0cd 52.0bcde 1.3a 3.4bc 91.0efghi 4.0bc 3.5abc 1.5ab CM-001 EC 95.0 mis 22.0abc 62.0cde 3.3ab 4.4bc 82.0bcdef 8.5de 5.0abc 4.5abc CM-001 EC 190.0 mis 50.0d 60.0bcde 3.9ab 8.3bcd 76.9bcd 11. Oe 4.5abc 7.6bcd CM-001 EC 380.0 mis 16.0ab 36.0abc 1.8a 3.1abc 95.0hi 3.5bc 1.0a 0.5a Confirm 2F 6.0 oz 40.0bcd 60.0bcde 1.7a 3.8bc 86.1cdefgh 9.9de 3.5abc 0.5a Lorsban 50 W 16.0 oz 16.0a 22.0a 1.3a 0.0a 95.0ghi 3.0bc 1.5a 0.5a Untreated Check 44.0cd 90.0f 11.0b 24. le 51.5a 10.9e 6.9bc 30.7e 1-Means within a column followed by the same letter are not significantly different (P<0.05; Fisher's Protected LSD Test). Data transformed Arcsin (Sqrt X) prior to analysis. NESBITT ORCHARD % Infested Terminals % Damaged Fruit % Fruit in Different Categories at Harvest 20 Aug clean Fancy #1 Culls Treatment Amt. form/100 gal 11 Jul 23 Jul 2 Aug 1.7abc 2.3ab Dipel 2X IO.Ooz 14.0abc 4.0ab 0.7ab 0.6a 95.5cde 0.5ab 0.8abc l.la b 98.5e l.Oab 0.0a 0.5ab Dipel DF IO.Ooz 12.0abc 6.0ab Mattch L 32.0 oz 34.0cd 26.0cde 2.3abc 3.9ab 91.7bcd 2.0abc 1.5ab 4.9d 22.0abcd 28.0cde 13.5de 10.8bc 76.5a 5.1 be 4.9b 13.5f MVP-2 32.0 oz M/C 32.0 oz 24.0bcd lO.Obc 0.2ab 0.5a 95.6cde 2.0abc 0.0a 2.4bcd 2.3abc 3.5ab 87.8abc 2.0abc 4.4b 5.9de Compound A 2.4 oz 24.0bcd 14.0bcde Compound A 3.5 oz 6.0ab 6.0ab 0.0a 3.6ab 92.0bcd 0.5ab ' 3.0ab 4.5d Larvin 3.2 SC 10.8 oz 8.0a 6.0ab 0.0a 1.7ab 97.8de 1.7abc 0.0a 0.5ab CM-001 SC 95.0 mis 12.0abc 28.0cde 1.6abc 3.3ab 89.8bcd 3.3abc 2.0ab 4.8d CM-001 SC 190.0 mis 14.0abc 26.0cde 1.3abc 2. la b 90.2abcd 6.4c 1.7ab 1.7bcd CM-001 SC 380.0 mis 16.0abcd 12.0bcd 4.0bcd 3.7ab 96.5cde 1.2abc 0.7ab 1.7bcd CM-001 EC 95.0 mis 42.0d 34.0e 0.4ab 1.2ab 90.9bcd 2.0abc 4.0b 3. le d CM-001 EC 190.0 mis 22.0abcd 24.0cde 4.0bc 3.2ab 97.1 bed 1.4abc 3.4ab 3.6d CM-001 EC 380.0 mis 32.0cd 26.0cde 7.8cd 7. la b 95.9de 1.2abc 2.4ab 0.6abc Confirm 2F 6.0 oz 26.0bcd 16.0bcde 3.3bc 0.0a 96.5cde 0.0a 2.6ab 0.9abc Lorsban 50 W 16.0 oz 22.0abcd 0.0a 0.4ab 0.0a 99.5e 0.0a 0.5ab 0.0a Untreated Check 30.0cd 32.0de 19.2e 18.9c 80.6ab 3.2abc 3.5ab 12.6ef Means within a column followed by the same letter are not significantly different (P<0.05; Fisher's Protected LSD Test). Data transformed Arcsin (Sqrt X) prior to analysis. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Arthropod Management Tests Oxford University Press

Pome Fruits

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/22.1.26
Publisher site
See Article on Publisher Site

Abstract

Downloaded from https://academic.oup.com/amt/article-abstract/22/1/26/4639737 by DeepDyve user on 21 July 2020 26 Arthropod Management Tests, Vol. 22 A: POME FRUITS in a RCB design, separated by unsprayed buffer trees, and replicated twice in each orchard. All materials were applied on a 3-spray schedule, at 1st hatch (2 Jul), mid-hatch (16 Jul), and on 29 Jul. Check plots were not sprayed with insecticides during the test. Summer populations of larvae were compared by examining 20-50 growing terminals on each tree for live larvae on 9-11 Jul and again on 23-2 4 Jul. Fruit damage from the 1st summer generation of larvae was estimated initially on 1-2 Jul and again on 20-2 4 Aug by sampling up to 100 apples from each tree. At harvest (4 Oct for the 'Rome ' applies in the Nesbit Orchard and 14-15 Oct for the Tdared' applies in the Brown Orchard), up to 100 applies were sampled from each tree and OBLR damaged fruit was classified according to USDA grading standards into the categories of "Fancy", #1 , and culls. The standard materials, Lorsban and Dipel, were generally the most effective treatments in reducing larval infestations in growing terminals. OBLR fruit damage at harvest was much higher in the Brown orchard (49.5%) than in the Nesbitt orchard (19.4%), but the levels of control obtained in the var­ ious treatments were similar at the 2 locations. None of the new compounds tested were any more effective in protecting fruit from OBLR damage than the 2 standard materials, Dipel and Lorsban. Th e D F formulation of Dipel was slightly more effective in preventing fruit damage than the 2X formulation, although the differences between the 2 products were not significant. The higher rates of CM-001 were slightly more effective than the lower dosages in protecting fruit at harvest. BROWN ORCHARD % Damaged Fruit % Fruit in Different Categories at Harvest ) Infested Terminals Amt. form/100 gal 9 Jul 24 Jul 1 Aug 20 Aug clean Fancy #1 Culls Treatment 30.0ab 2.9abc 93.0fghi 1.5ab 3.0abc 2.5abc Dipel 2X 10.0 oz 22.0abc 1.5a 16.0ab 22.0a 0.6a 2.5ab 97.0i 1.0a 1.5ab 0.5a Dipel DF IO.OO Z Mattch L 32.0 oz 32.0abcd 48.0abcde 4.7ab 10.9cd 77.0bcd 6.0cde 7.5bc 9.5cd 32.0 oz 44.0cd 72.0ef 6.2ab 14.5de 68.0ab 9.0de 8.0c 15.0d MVP-2 32.0 oz 28.0 abed 40.0abcd 2.0a 3.2abc 81.5bcdef 9.0de 4.0abc 5.5abc M/C 2.4 oz 62.0cde 3.7ab 10.9cde 70.8bc 6.9cde 6.9bc 15.4d Compound A 20.0abc Compound A 3.5 oz 22.0abc 50.0abcde 4.3ab 12.5bcd 79.1bcde 7.0cde 3.5abc 10.4cd 10.8 oz 52.0bcde 3.2ab 5.4bcd 89.5defghi 5.5cd 2.5abc 2.5abc Larvin 3.2 SC 18.0abc 4.5ab 2.5abc CM-001 SC 95.0 mis 12.0a 70.0def 4.3bc 83.5cdefg 6.5cde 7.5bc 5.0bcd 89.5defghi 3.0bc 4.5abc 3.0abc CM-001 SC 190.0 mis 28.0abcd 66.0cdef 1.1a CM-001 SC 380.0 mis 44.0cd 52.0bcde 1.3a 3.4bc 91.0efghi 4.0bc 3.5abc 1.5ab CM-001 EC 95.0 mis 22.0abc 62.0cde 3.3ab 4.4bc 82.0bcdef 8.5de 5.0abc 4.5abc CM-001 EC 190.0 mis 50.0d 60.0bcde 3.9ab 8.3bcd 76.9bcd 11. Oe 4.5abc 7.6bcd CM-001 EC 380.0 mis 16.0ab 36.0abc 1.8a 3.1abc 95.0hi 3.5bc 1.0a 0.5a Confirm 2F 6.0 oz 40.0bcd 60.0bcde 1.7a 3.8bc 86.1cdefgh 9.9de 3.5abc 0.5a Lorsban 50 W 16.0 oz 16.0a 22.0a 1.3a 0.0a 95.0ghi 3.0bc 1.5a 0.5a Untreated Check 44.0cd 90.0f 11.0b 24. le 51.5a 10.9e 6.9bc 30.7e 1-Means within a column followed by the same letter are not significantly different (P<0.05; Fisher's Protected LSD Test). Data transformed Arcsin (Sqrt X) prior to analysis. NESBITT ORCHARD % Infested Terminals % Damaged Fruit % Fruit in Different Categories at Harvest 20 Aug clean Fancy #1 Culls Treatment Amt. form/100 gal 11 Jul 23 Jul 2 Aug 1.7abc 2.3ab Dipel 2X IO.Ooz 14.0abc 4.0ab 0.7ab 0.6a 95.5cde 0.5ab 0.8abc l.la b 98.5e l.Oab 0.0a 0.5ab Dipel DF IO.Ooz 12.0abc 6.0ab Mattch L 32.0 oz 34.0cd 26.0cde 2.3abc 3.9ab 91.7bcd 2.0abc 1.5ab 4.9d 22.0abcd 28.0cde 13.5de 10.8bc 76.5a 5.1 be 4.9b 13.5f MVP-2 32.0 oz M/C 32.0 oz 24.0bcd lO.Obc 0.2ab 0.5a 95.6cde 2.0abc 0.0a 2.4bcd 2.3abc 3.5ab 87.8abc 2.0abc 4.4b 5.9de Compound A 2.4 oz 24.0bcd 14.0bcde Compound A 3.5 oz 6.0ab 6.0ab 0.0a 3.6ab 92.0bcd 0.5ab ' 3.0ab 4.5d Larvin 3.2 SC 10.8 oz 8.0a 6.0ab 0.0a 1.7ab 97.8de 1.7abc 0.0a 0.5ab CM-001 SC 95.0 mis 12.0abc 28.0cde 1.6abc 3.3ab 89.8bcd 3.3abc 2.0ab 4.8d CM-001 SC 190.0 mis 14.0abc 26.0cde 1.3abc 2. la b 90.2abcd 6.4c 1.7ab 1.7bcd CM-001 SC 380.0 mis 16.0abcd 12.0bcd 4.0bcd 3.7ab 96.5cde 1.2abc 0.7ab 1.7bcd CM-001 EC 95.0 mis 42.0d 34.0e 0.4ab 1.2ab 90.9bcd 2.0abc 4.0b 3. le d CM-001 EC 190.0 mis 22.0abcd 24.0cde 4.0bc 3.2ab 97.1 bed 1.4abc 3.4ab 3.6d CM-001 EC 380.0 mis 32.0cd 26.0cde 7.8cd 7. la b 95.9de 1.2abc 2.4ab 0.6abc Confirm 2F 6.0 oz 26.0bcd 16.0bcde 3.3bc 0.0a 96.5cde 0.0a 2.6ab 0.9abc Lorsban 50 W 16.0 oz 22.0abcd 0.0a 0.4ab 0.0a 99.5e 0.0a 0.5ab 0.0a Untreated Check 30.0cd 32.0de 19.2e 18.9c 80.6ab 3.2abc 3.5ab 12.6ef Means within a column followed by the same letter are not significantly different (P<0.05; Fisher's Protected LSD Test). Data transformed Arcsin (Sqrt X) prior to analysis.

Journal

Arthropod Management TestsOxford University Press

Published: Jan 1, 1997

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