Get 20M+ Full-Text Papers For Less Than $1.50/day. Start a 14-Day Trial for You or Your Team.

Learn More →

PEACH INSECT STUDY I, 2011

PEACH INSECT STUDY I, 2011 Arthropod Management Tests 2012, Vol. 37 doi: 10.4182/amt.2012.B11 (B11) PEACH: Prunus persica (L.), ‘Redhaven,’ ‘SunGlo’ Larry A. Hull Fruit Research and Extension Center Pennsylvania State University P. O. Box 330 Biglerville, PA 17307-0330 Phone: (717) 677-6116 Ext. 6 Fax: (717) 677-4112 Email: lah4@psu.edu Neelendra K. Joshi Email: nkj105@psu.edu Brown marmorated stink bug (BMSB): Halyomorpha halys (Stål) Tarnished plant bug: Lygus lineolaris (Palisot de Beauvois) Brown stink bug: Euschistus servus (Say) Dusky stink bug: Euschistus tristigmus (Say) Green stink bug: Acrosternum hilare (Say) Green peach aphid (GPA): Myzus persicae (Sulzer) Japanese beetle (JB): Popillia japonica Newman Obliquebanded leafroller OBLR): Choristoneura rosaceana (Harris) Tufted apple bud moth: Platynota idaeusalis (Walker) Oriental fruit moth (OFM): Grapholita molesta (Busck) Plum curculio (PC): Conotrachelus nenuphar (Herbst) Western flower thrips (WFT): Frankliniella occidentalis (Pergande) Various insecticide treatments were applied at varying DD timings during each of the egg hatch periods for the first three broods of OFM to determine control efficacy and their activity against various other pests present. The treatments were applied to single-tree plots replicated six times in a RCB design. Three replicates were randomized on two rows of ‘Redhaven’ peaches and three replicates on two rows of ‘SunGlo’ nectarines. The trees were planted to a spacing of 18 x 30 ft and were 15 yr old. All treatments were applied with a Durand-Wayland airblast sprayer calibrated to deliver 100 gpa, driven at 2.4 mph. Treatments were timed for various stages of OFM egg hatch and were based on DD accumulations from biofix (i.e., first sustained capture of adult males in sex pheromone traps in peach) (Table 1). DD calculations were based on minimum and maximum developmental thresholds of 45°F and 90°F (OFM). All treatments received a regular maintenance schedule of fungicides (Captan 80WDG, Indar 2F, sulfur and Topsin M 70WDF). GPA was sampled periodically by counting the number of live colonies found in a 3-min examination of each plot tree. OFM shoot injury was assessed by counting the no. of infested shoots observed during a 3-min evaluation of each plot tree. BMSB adults and nymphs were assessed by two methods: 1) using an insect beating tray (1m ) and sampling two sides of the upper part of each plot tree, and 2) making a 3-min examination of each plot tree. Effectiveness of the treatments in preventing injury from the various fruit pests was assessed by scoring for injury up to 85 mature ‘SunGlo’ nectarines per tree on 25/26 Jul and up to 90 mature ‘Redhaven’ peaches per tree on 27 and 1 Aug. An ANOVA was conducted on all transformed data and a means separation analysis was performed using Fisher’s Protected LSD at P > 0.05. Pest pressure was low to moderate throughout the study depending on the pest species. None of the treatments differed significantly from the untreated check in controlling GPA on 11 May (Table 2). However, all chemical treatments were effective in suppressing GPA populations on 16 May. Chemical treatments that included Admire Pro and st Provado had the lowest GPA populations on 23 May (Table 2). There were no differences among treatments for control of 1 generation OFM infesting shoots (1 Jun), but all chemical treatments were found equally effective in suppressing OFM shoot infestations during the 6 Jul assessment. BMSB adult and nymphal populations were quite variable across all treatments in Jul and no differences were found among treatments (Table 3). In terms of fruit injury found on ‘SunGlo’ nectarines, all treatment regimes provided statistically similar levels of pest control. For fruit injury on ‘Redhaven’ peaches, all chemical treatments effectively prevented OFM larvae from entering the fruit. When the data from both fruit types were combined, all chemical treatments, except the HGW-86 treatment without LI-700, controlled OFM larvae from entering fruit, while all chemical treatments controlled LR injury (Table 4). Surprisingly, none of the chemical treatments prevented CF injury (Table 4). This research was supported by industry gift(s) of pesticides and/or research funding. 1 Arthropod Management Tests 2012, Vol. 37 doi: 10.4182/amt.2012.B11 Table 1. lb AI/ Dates of Application Treatment/formulation Amt/acre acre (OFM degree days from biofix [1st moth capture]) HGW-86 10SE 300.0 ml + 0.066 + LI 700 946.0 ml 0.25% 3 May (195), 13 (336) & 27 Jun (1479), 20 Jul (2223) HGW-86 10SE 400.0 ml + 0.088 + LI 700 946.0 ml 0.25% 3 May (195), 13 (336) & 27 Jun (1479), 20 Jul (2223) HGW-86 10SE 606.0 ml + 0.134 + LI 700 946.0 ml 0.25% 3 May (195), 13 (336) & 27 Jun (1479), 20 Jul (2223) HGW-86 10SE 400.0 ml 0.088 3 May (195), 13 (336) & 27 Jun (1479), 20 Jul (2223) Altacor 35WDG 85.0 g + 0.066 + Admire Pro 74.0 ml 0.09 3 May (195) Altacor 35WDG 85.0 g 0.066 13 (336) & 27 Jun (1479) Lannate 90SP 227.0 g 0.45 12 Jul (1930) Avaunt 30WDG 142.0 g + 0.0938 + Provado 1.6F 148.0 ml 0.0625 3 May (195) Intrepid 2F 355.0 ml + 0.1875 + Assail 30SG 142.0 g 0.0938 13 (336) & 27 Jun (1479) Delegate 25WG 170.0 g 0.0938 12 Jul (1930) Untreated check - - - - Table 2. GPA infested shoots/3 min OFM infested shoots/3 min Treatment/formulation Amt/acre 11 May 16 May 23 May 1 Jun 6 Jul 18 Jul HGW-86 10SE 300.0 ml + + LI 700 946.0 ml 0.5a 1.0a 3.3c 5.8a 13.0a 23.8a HGW-86 10SE 400.0 ml + + LI 700 946.0 ml 0.5a 1.2a 4.8cd 5.2a 20.5a 19.2a HGW-86 10SE 606.0 ml + + LI 700 946.0 ml 0.3a 0.7a 2.3bc 3.0a 16.3a 15.2a HGW-86 10SE 400.0 ml 0.3a 1.3a 3.3c 2.7a 17.2a 16.3a Altacor 35WDG 85.0 g + + Admire Pro 74.0 ml Altacor 35WDG 85.0 g Lannate 90SP 227.0 g 0.3a 0.5a 0.2a 4.8a 11.7a 15.8a Avaunt 30WDG 142.0 g + + Provado 1.6F 148.0 ml Intrepid 2F 355.0 ml + + Assail 30SG 142.0 g Delegate 25WG 170.0 g 0.3a 0.5a 0.7ab 4.3a 17.3a 16.2a Untreated check - - 0.2a 6.7b 9.0d 6.5a 32.0b 30.5a Means followed by the same letter(s) are not significantly different, (Fisher’s Protected LSD P > 0.05). Table 3. BMSB adults & nymphs/ BMSB adults & beating tray nymphs/3 min Treatment/formulation Amt/acre 1 Jul 7 Jul 25 Jul HGW-86 10SE 300.0 ml + + LI 700 946.0 ml 0.7a 2.7a 0.8a HGW-86 10SE 400.0 ml + + LI 700 946.0 ml 0.5a 0.2a 2.3a HGW-86 10SE 606.0 ml + + LI 700 946.0 ml 0.2a 0.7a 0.0a HGW-86 10SE 400.0 ml 0.0a 0.2a 0.0a Altacor 35WDG 85.0 g + + Admire Pro 74.0 ml Altacor 35WDG 85.0 g Lannate 90SP 227.0 g 0.3a 1.3a 1.8a Avaunt 30WDG 142.0 g + + Provado 1.6F 148.0 ml Intrepid 2F 355.0 ml + + Assail 30SG 142.0 g Delegate 25WG 170.0 g 0.7a 1.0a 0.3a Untreated check - - 0.0a 0.8a 0.7a Means followed by the same letter(s) are not significantly different, (Fisher’s Protected LSD, P > 0.05). 2 Arthropod Management Tests 2012, Vol. 37 doi: 10.4182/amt.2012.B11 Table 4. Injuries/100 fruit No. OFM % clean Treatment/formulation Amt/acre sampled Entries LR PC CF JB WFT fruit HGW-86 10SE 300.0 ml + + LI 700 946.0 ml 468 0.5a 0.0a 4.7a 20.8a 0.0a 0.5a 73.6a HGW-86 10SE 400.0 ml + + LI 700 946.0 ml 518 0.2a 0.0a 3.6a 16.8a 0.1a 0.0a 80.0a HGW-86 10SE 606.0 ml + + LI 700 946.0 ml 542 0.7a 0.0a 3.5a 13.2a 0.0a 0.0a 82.8a HGW-86 10SE 400.0 ml 573 1.5ab 0.0a 6.5a 15.0a 0.4a 0.0a 77.2a Altacor 35WDG 85.0 g + + Admire Pro 74.0 ml Altacor 35WDG 85.0 g Lannate 90SP 227.0 g 594 1.1a 0.0a 4.5a 18.9a 0.2a 0.0a 75.4a Avaunt 30WDG 142.0 g + + Provado 1.6F 148.0 ml Intrepid 2F 355.0 ml + + Assail 30SG 142.0 g Delegate 25WG 170.0 g 424 0.7a 0.0a 3.5a 17.2a 0.0a 0.0a 78.9a Untreated check - - 547 3.1b 0.4b 3.6a 13.5a 0.4a 0.2a 78.9a Means followed by the same letter(s) are not significantly different, (Fisher’s Protected LSD, P > 0.05). http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Arthropod Management Tests Oxford University Press

PEACH INSECT STUDY I, 2011

Loading next page...
 
/lp/oxford-university-press/peach-insect-study-i-2011-6rTzX2oacj
Publisher
Oxford University Press
Copyright
© Published by Oxford University Press.
eISSN
2155-9856
DOI
10.4182/amt.2012.B11
Publisher site
See Article on Publisher Site

Abstract

Arthropod Management Tests 2012, Vol. 37 doi: 10.4182/amt.2012.B11 (B11) PEACH: Prunus persica (L.), ‘Redhaven,’ ‘SunGlo’ Larry A. Hull Fruit Research and Extension Center Pennsylvania State University P. O. Box 330 Biglerville, PA 17307-0330 Phone: (717) 677-6116 Ext. 6 Fax: (717) 677-4112 Email: lah4@psu.edu Neelendra K. Joshi Email: nkj105@psu.edu Brown marmorated stink bug (BMSB): Halyomorpha halys (Stål) Tarnished plant bug: Lygus lineolaris (Palisot de Beauvois) Brown stink bug: Euschistus servus (Say) Dusky stink bug: Euschistus tristigmus (Say) Green stink bug: Acrosternum hilare (Say) Green peach aphid (GPA): Myzus persicae (Sulzer) Japanese beetle (JB): Popillia japonica Newman Obliquebanded leafroller OBLR): Choristoneura rosaceana (Harris) Tufted apple bud moth: Platynota idaeusalis (Walker) Oriental fruit moth (OFM): Grapholita molesta (Busck) Plum curculio (PC): Conotrachelus nenuphar (Herbst) Western flower thrips (WFT): Frankliniella occidentalis (Pergande) Various insecticide treatments were applied at varying DD timings during each of the egg hatch periods for the first three broods of OFM to determine control efficacy and their activity against various other pests present. The treatments were applied to single-tree plots replicated six times in a RCB design. Three replicates were randomized on two rows of ‘Redhaven’ peaches and three replicates on two rows of ‘SunGlo’ nectarines. The trees were planted to a spacing of 18 x 30 ft and were 15 yr old. All treatments were applied with a Durand-Wayland airblast sprayer calibrated to deliver 100 gpa, driven at 2.4 mph. Treatments were timed for various stages of OFM egg hatch and were based on DD accumulations from biofix (i.e., first sustained capture of adult males in sex pheromone traps in peach) (Table 1). DD calculations were based on minimum and maximum developmental thresholds of 45°F and 90°F (OFM). All treatments received a regular maintenance schedule of fungicides (Captan 80WDG, Indar 2F, sulfur and Topsin M 70WDF). GPA was sampled periodically by counting the number of live colonies found in a 3-min examination of each plot tree. OFM shoot injury was assessed by counting the no. of infested shoots observed during a 3-min evaluation of each plot tree. BMSB adults and nymphs were assessed by two methods: 1) using an insect beating tray (1m ) and sampling two sides of the upper part of each plot tree, and 2) making a 3-min examination of each plot tree. Effectiveness of the treatments in preventing injury from the various fruit pests was assessed by scoring for injury up to 85 mature ‘SunGlo’ nectarines per tree on 25/26 Jul and up to 90 mature ‘Redhaven’ peaches per tree on 27 and 1 Aug. An ANOVA was conducted on all transformed data and a means separation analysis was performed using Fisher’s Protected LSD at P > 0.05. Pest pressure was low to moderate throughout the study depending on the pest species. None of the treatments differed significantly from the untreated check in controlling GPA on 11 May (Table 2). However, all chemical treatments were effective in suppressing GPA populations on 16 May. Chemical treatments that included Admire Pro and st Provado had the lowest GPA populations on 23 May (Table 2). There were no differences among treatments for control of 1 generation OFM infesting shoots (1 Jun), but all chemical treatments were found equally effective in suppressing OFM shoot infestations during the 6 Jul assessment. BMSB adult and nymphal populations were quite variable across all treatments in Jul and no differences were found among treatments (Table 3). In terms of fruit injury found on ‘SunGlo’ nectarines, all treatment regimes provided statistically similar levels of pest control. For fruit injury on ‘Redhaven’ peaches, all chemical treatments effectively prevented OFM larvae from entering the fruit. When the data from both fruit types were combined, all chemical treatments, except the HGW-86 treatment without LI-700, controlled OFM larvae from entering fruit, while all chemical treatments controlled LR injury (Table 4). Surprisingly, none of the chemical treatments prevented CF injury (Table 4). This research was supported by industry gift(s) of pesticides and/or research funding. 1 Arthropod Management Tests 2012, Vol. 37 doi: 10.4182/amt.2012.B11 Table 1. lb AI/ Dates of Application Treatment/formulation Amt/acre acre (OFM degree days from biofix [1st moth capture]) HGW-86 10SE 300.0 ml + 0.066 + LI 700 946.0 ml 0.25% 3 May (195), 13 (336) & 27 Jun (1479), 20 Jul (2223) HGW-86 10SE 400.0 ml + 0.088 + LI 700 946.0 ml 0.25% 3 May (195), 13 (336) & 27 Jun (1479), 20 Jul (2223) HGW-86 10SE 606.0 ml + 0.134 + LI 700 946.0 ml 0.25% 3 May (195), 13 (336) & 27 Jun (1479), 20 Jul (2223) HGW-86 10SE 400.0 ml 0.088 3 May (195), 13 (336) & 27 Jun (1479), 20 Jul (2223) Altacor 35WDG 85.0 g + 0.066 + Admire Pro 74.0 ml 0.09 3 May (195) Altacor 35WDG 85.0 g 0.066 13 (336) & 27 Jun (1479) Lannate 90SP 227.0 g 0.45 12 Jul (1930) Avaunt 30WDG 142.0 g + 0.0938 + Provado 1.6F 148.0 ml 0.0625 3 May (195) Intrepid 2F 355.0 ml + 0.1875 + Assail 30SG 142.0 g 0.0938 13 (336) & 27 Jun (1479) Delegate 25WG 170.0 g 0.0938 12 Jul (1930) Untreated check - - - - Table 2. GPA infested shoots/3 min OFM infested shoots/3 min Treatment/formulation Amt/acre 11 May 16 May 23 May 1 Jun 6 Jul 18 Jul HGW-86 10SE 300.0 ml + + LI 700 946.0 ml 0.5a 1.0a 3.3c 5.8a 13.0a 23.8a HGW-86 10SE 400.0 ml + + LI 700 946.0 ml 0.5a 1.2a 4.8cd 5.2a 20.5a 19.2a HGW-86 10SE 606.0 ml + + LI 700 946.0 ml 0.3a 0.7a 2.3bc 3.0a 16.3a 15.2a HGW-86 10SE 400.0 ml 0.3a 1.3a 3.3c 2.7a 17.2a 16.3a Altacor 35WDG 85.0 g + + Admire Pro 74.0 ml Altacor 35WDG 85.0 g Lannate 90SP 227.0 g 0.3a 0.5a 0.2a 4.8a 11.7a 15.8a Avaunt 30WDG 142.0 g + + Provado 1.6F 148.0 ml Intrepid 2F 355.0 ml + + Assail 30SG 142.0 g Delegate 25WG 170.0 g 0.3a 0.5a 0.7ab 4.3a 17.3a 16.2a Untreated check - - 0.2a 6.7b 9.0d 6.5a 32.0b 30.5a Means followed by the same letter(s) are not significantly different, (Fisher’s Protected LSD P > 0.05). Table 3. BMSB adults & nymphs/ BMSB adults & beating tray nymphs/3 min Treatment/formulation Amt/acre 1 Jul 7 Jul 25 Jul HGW-86 10SE 300.0 ml + + LI 700 946.0 ml 0.7a 2.7a 0.8a HGW-86 10SE 400.0 ml + + LI 700 946.0 ml 0.5a 0.2a 2.3a HGW-86 10SE 606.0 ml + + LI 700 946.0 ml 0.2a 0.7a 0.0a HGW-86 10SE 400.0 ml 0.0a 0.2a 0.0a Altacor 35WDG 85.0 g + + Admire Pro 74.0 ml Altacor 35WDG 85.0 g Lannate 90SP 227.0 g 0.3a 1.3a 1.8a Avaunt 30WDG 142.0 g + + Provado 1.6F 148.0 ml Intrepid 2F 355.0 ml + + Assail 30SG 142.0 g Delegate 25WG 170.0 g 0.7a 1.0a 0.3a Untreated check - - 0.0a 0.8a 0.7a Means followed by the same letter(s) are not significantly different, (Fisher’s Protected LSD, P > 0.05). 2 Arthropod Management Tests 2012, Vol. 37 doi: 10.4182/amt.2012.B11 Table 4. Injuries/100 fruit No. OFM % clean Treatment/formulation Amt/acre sampled Entries LR PC CF JB WFT fruit HGW-86 10SE 300.0 ml + + LI 700 946.0 ml 468 0.5a 0.0a 4.7a 20.8a 0.0a 0.5a 73.6a HGW-86 10SE 400.0 ml + + LI 700 946.0 ml 518 0.2a 0.0a 3.6a 16.8a 0.1a 0.0a 80.0a HGW-86 10SE 606.0 ml + + LI 700 946.0 ml 542 0.7a 0.0a 3.5a 13.2a 0.0a 0.0a 82.8a HGW-86 10SE 400.0 ml 573 1.5ab 0.0a 6.5a 15.0a 0.4a 0.0a 77.2a Altacor 35WDG 85.0 g + + Admire Pro 74.0 ml Altacor 35WDG 85.0 g Lannate 90SP 227.0 g 594 1.1a 0.0a 4.5a 18.9a 0.2a 0.0a 75.4a Avaunt 30WDG 142.0 g + + Provado 1.6F 148.0 ml Intrepid 2F 355.0 ml + + Assail 30SG 142.0 g Delegate 25WG 170.0 g 424 0.7a 0.0a 3.5a 17.2a 0.0a 0.0a 78.9a Untreated check - - 547 3.1b 0.4b 3.6a 13.5a 0.4a 0.2a 78.9a Means followed by the same letter(s) are not significantly different, (Fisher’s Protected LSD, P > 0.05).

Journal

Arthropod Management TestsOxford University Press

Published: Jan 1, 2012

There are no references for this article.