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Peach, Season-Long Insect Control, 1993

Peach, Season-Long Insect Control, 1993 Downloaded from https://academic.oup.com/amt/article-abstract/19/1/39/4639217 by DeepDyve user on 02 August 2020 B: STONE FRUITS Arthropod Management Tests, Vol. 19 39 STON E FRUITS PEACH : Prunus persica (L.) 'Redhaven' James W. Johnson and John C. Wise (IB ) Oriental Fruit Moth (OFM); Grapholita molesta (Busck) Department of Entomology Tarnished Plant Bug (TPB); Lygus lineolaris (Palisot de Beauvois) Michigan State University Plum Curculio (PC); Conotrachelus nenuphar (Herbst) East Lansing, MI 48824-1 115 Rose Chafer (RC); Macrodactylus subspinosus (F.) PEACH, SEASON-LONG INSECT CONTROL, 1993: Insecticides were applied to mature peach trees on the Trevor Nichols Res. Complex (Peach 2) at a rate of 100 gpa with an FMC 1029 airblast sprayer. Treatments were arranged as completely randomized units consisting of single trees, each replicated 4 times. Applications were made on 17 May (PF), 26 May (SS), 7 Jun (1C), 21 Jun (2C), 1 Jul (3C), 12 Jul (4C), 28 Jul (5C) and 9 Aug (6C). Rovral, Ziram and Wettable Sulfur were applied separately to all treatments. An OFM flagging evaluation was done on 28 Jun by inspecting 50 terminals randomly from each tree for a total of 200 terminals per treatment. A mid-season fruit evaluation was done on 6 Jul, by picking 50 fruit per replicate for a total of 200 apples per treatment. A harvest fruit evaluation was done on 11 Aug by picking 50 fruit randomly from the periphery of the tree from each replicate, for a total of 200 fruit per treatment. All treatments provided significantly higher control of early season flagging. At the 6 Jul rating, only Asana and TD2321 provided control of rose chafer significantly different from the untreated check, and only Asana provided control of plant bug injury at levels significantly different from the untreated check. At the 11 Aug rating, all treatments provided significantly higher percent clean fruit, and controlled OFM significantly better than the untreated check. RC, PC, and TPB injury were not significantly different between all treatments and the untreated check. II UUIIIUgW Amt. % Clean Treatment form./acre fruit % OFM % RC % PC % TPB Control 83.00 b 0.8 a 2.0 a 1.8 a 4.3 a Guthion 50WP 2.0 lb 94.00 a 0.0 a 1.5 ab 0.8 a 0.8 ab TD 2321 40WP 2.5 lb 92.00 a 0.3 a 0.0 b 1.5 a 2.3 ab Penncap 2FM 64.0 oz 90.50 ab 0.0 a 1.8 a 1.5 a 1.8 ab Asana XL .66EC 0.5 pt 98.00 a 0.0 a 0.0 b 0.5 a 0.5 b Means within columns followed by same letter do not significantly differ (Duncan's MRT, P = .05) Mean flags/100 terminals Mean damage/50 fruit— 11 Aug —28 Jun Amt. % Clean Treatment fruit % OFM % RC % PC % TPB OFM form./acre Control 64.50 b 11.3 a 3.5 a 1.5 a 2.0 a 3.0 a Guthion 50WP 0.5 b 2.0 lb 94.00 a 0.3 b 1.0 b 0.3 a 1.0 a TD 2321 40WP 2.5 lb 92.00 a 2.5 b 0.8 b 0.0 a 0.8 a 0.8 b Penncap 2FM 1.0 b 2.5 ab 1.0 b 64.0 oz 88.50 a 0.0 a 2.3 a Asana XL .66EC 0.5 pt 97.00 a 0.3 b 0.8 b 0.5 a 0.3 a 0.0 b Means within columns followed by same letter do not significantly differ (Duncan's MRT, P = .05) http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Arthropod Management Tests Oxford University Press

Peach, Season-Long Insect Control, 1993

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Publisher
Oxford University Press
Copyright
© 1994, Entomological Society of America
eISSN
2155-9856
DOI
10.1093/amt/19.1.39
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Abstract

Downloaded from https://academic.oup.com/amt/article-abstract/19/1/39/4639217 by DeepDyve user on 02 August 2020 B: STONE FRUITS Arthropod Management Tests, Vol. 19 39 STON E FRUITS PEACH : Prunus persica (L.) 'Redhaven' James W. Johnson and John C. Wise (IB ) Oriental Fruit Moth (OFM); Grapholita molesta (Busck) Department of Entomology Tarnished Plant Bug (TPB); Lygus lineolaris (Palisot de Beauvois) Michigan State University Plum Curculio (PC); Conotrachelus nenuphar (Herbst) East Lansing, MI 48824-1 115 Rose Chafer (RC); Macrodactylus subspinosus (F.) PEACH, SEASON-LONG INSECT CONTROL, 1993: Insecticides were applied to mature peach trees on the Trevor Nichols Res. Complex (Peach 2) at a rate of 100 gpa with an FMC 1029 airblast sprayer. Treatments were arranged as completely randomized units consisting of single trees, each replicated 4 times. Applications were made on 17 May (PF), 26 May (SS), 7 Jun (1C), 21 Jun (2C), 1 Jul (3C), 12 Jul (4C), 28 Jul (5C) and 9 Aug (6C). Rovral, Ziram and Wettable Sulfur were applied separately to all treatments. An OFM flagging evaluation was done on 28 Jun by inspecting 50 terminals randomly from each tree for a total of 200 terminals per treatment. A mid-season fruit evaluation was done on 6 Jul, by picking 50 fruit per replicate for a total of 200 apples per treatment. A harvest fruit evaluation was done on 11 Aug by picking 50 fruit randomly from the periphery of the tree from each replicate, for a total of 200 fruit per treatment. All treatments provided significantly higher control of early season flagging. At the 6 Jul rating, only Asana and TD2321 provided control of rose chafer significantly different from the untreated check, and only Asana provided control of plant bug injury at levels significantly different from the untreated check. At the 11 Aug rating, all treatments provided significantly higher percent clean fruit, and controlled OFM significantly better than the untreated check. RC, PC, and TPB injury were not significantly different between all treatments and the untreated check. II UUIIIUgW Amt. % Clean Treatment form./acre fruit % OFM % RC % PC % TPB Control 83.00 b 0.8 a 2.0 a 1.8 a 4.3 a Guthion 50WP 2.0 lb 94.00 a 0.0 a 1.5 ab 0.8 a 0.8 ab TD 2321 40WP 2.5 lb 92.00 a 0.3 a 0.0 b 1.5 a 2.3 ab Penncap 2FM 64.0 oz 90.50 ab 0.0 a 1.8 a 1.5 a 1.8 ab Asana XL .66EC 0.5 pt 98.00 a 0.0 a 0.0 b 0.5 a 0.5 b Means within columns followed by same letter do not significantly differ (Duncan's MRT, P = .05) Mean flags/100 terminals Mean damage/50 fruit— 11 Aug —28 Jun Amt. % Clean Treatment fruit % OFM % RC % PC % TPB OFM form./acre Control 64.50 b 11.3 a 3.5 a 1.5 a 2.0 a 3.0 a Guthion 50WP 0.5 b 2.0 lb 94.00 a 0.3 b 1.0 b 0.3 a 1.0 a TD 2321 40WP 2.5 lb 92.00 a 2.5 b 0.8 b 0.0 a 0.8 a 0.8 b Penncap 2FM 1.0 b 2.5 ab 1.0 b 64.0 oz 88.50 a 0.0 a 2.3 a Asana XL .66EC 0.5 pt 97.00 a 0.3 b 0.8 b 0.5 a 0.3 a 0.0 b Means within columns followed by same letter do not significantly differ (Duncan's MRT, P = .05)

Journal

Arthropod Management TestsOxford University Press

Published: Jan 1, 1994

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