Reduced-risk pest management programs for eastern U.S. apple and peach orchards: A 4-year regional project

A. M. Agnello, A. Atanassov, J. C. Bergh, D. J. Biddinger, L. J. Gut, M. J. Haas, J. K. Harper, H. W. Hogmire, L. A. Hull, L. F. Kime, G. Krawczyk, P. S. McGhee, J. P. Nyrop, W. H. Reissig, P. W. Shearer, R. W. Straub, R. T. Villanueva, J. F. Walgenbach

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37 Scopus citations


Studies were conducted from 2002 to 2005 to determine the effectiveness of reduced-risk (RR) tactics for managing key pests in 50 commercial apple orchards (114 ha) in Michigan, North Carolina, New York, Pennsylvania, Virginia, and West Virginia; and 20 peach orchards (190 ha) in Michigan, New Jersey, Pennsylvania, and West Virginia. At each apple site, a block of up to 5 ha received a seasonal program of selective RR and organophosphate-replacement insecticides, with or without pheromones for mating disruption of key lepidopteran pests of apple (codling moth, oriental fruit moth, and obliquebanded leafroller) and peach (oriental fruit moth, lesser peachtree borer, and peachtree borer). A comparison block at each site with the same varieties and tree training was managed using each grower's standard program of conventional insecticides (STD). Pheromone traps for lepidopteran species were hung in all plots and monitored weekly. Foliar samples were taken during the season to estimate phytophagous and predator mite densities. Red sphere traps baited with fruit volatiles were used to monitor apple maggot adults in apple orchards. Fruits were inspected for insect damage at harvest, and graded according to USDA standards. Partial budget analysis was used to assess the net profitability of RR programs to produce apples and peaches for their intended market in each state. Fruit damage at harvest caused by direct fruit pests was generally low across all blocks and treatments. There were no statistically significant differences in fruit damage or mite populations between the RR blocks, with or without pheromones, and the growers' standards. Insecticide use patterns in the RR plots represented up to 88 and 78% reduction in the amount of active ingredient applied per hectare, and an 85 and 77% decrease in their Environmental Impact Quotient for apples and peaches, respectively. However, RR programs were more expensive and generally less profitable compared with growers' standard programs. Regression analysis estimated that RR apple programs with and without mating disruption were on average $465 and $144/ha more expensive, and $544 and $159/ha less profitable, respectively, compared with standard programs. RR+MD programs for peaches cost an average $314/ha more and returned about $284/ha less than STD peach programs.

Original languageEnglish
Pages (from-to)184-197
Number of pages14
JournalAmerican Entomologist
Issue number3
StatePublished - 2009

Bibliographical note

Funding Information:
new insecticides have expired and less expensive generics become In B.A. Croft and S. C. Hoyt [Eds.]. Integrated management of insect pests available. Another factor that is expected to improve the economics of pome and stone fruits. Wiley, New York. of RR programs is the increasing incidence of organophosphate-disruptiondispenserapplicationheightsoncapturesofmaleGrapholita De Lame, F. M., and L. J. Gut. 2006.Effect of monitoring trap and mating resistant codling moth populations (Mota-Sanchez et al. ? ? ? ?) and molesta (Busck; Lepidoptera: Tortricidae) in pheromone and virgin the increased damage associated with these populations (Hull et female-baited traps. Environ. Entomol. 甃省 猃爃眃稂ȃ猃爃砃稁? al. 2003, Reissig 2003). A result is that growers can expect better Epstein, D., L. Gut, and P. McGhee. 2007. Areawide approach to managing returns by reducing damage through the use of new insecticides codlingmothinMichiganappleproduction.Finalreport:FQPA/Strategic against this pest. can Farmland Trust. Michigan State University, E. Lansing.Agricultural Initiative Program Grant. E Pennsylvania Region 眂Ameri- Whereas our approach was to eliminate older chemistry insec-Hogmire, H. W., Jr. [Ed.]. 1995. Mid-Atlantic orchard monitoring guide. ticides from RR plots in an abruptly manner, growers will make the NRAES-? ?. Northeast Regional Agricultural Engineering Service, transition to RR programs by gradually incorporating those new Ithaca, NY. tools that ?it their systems most effectively. In fact, our cooperating Howitt, A. H. 1993. Common tree fruit pests. Michigan State Univ. Exten- growers adopted components of our RR programs into their STD Hull, L. A., B. A. McPheron, and A. M. Lake. 1997.Insecticideresistancesion NCR 砃甁 E. Lansing. programs during the course of this study, and additional components management and integrated mite management in orchards: can they have been adopted since this project ended. The fruit industry has coexist? Pestic. Sci. 眃猁 甃眃笂ȃ甃砃码? lost several organophosphate insecticides in recent years because Hull, L. A., C. Myers, N. Ellis, and G. Krawczyk. 2003. Management of the of FQPA-related regulatory actions, and additional losses will occur internal lepidopteran complex in Pennsylvania. International Dwarf in the future (e.g., azinphosmethyl on apple in ????). This projeHct ull,L.A.,G. Krawczyk, E. Bohnenblust, and D. Biddinger. 2007.Fruit Tree Association, Compact Fruit Tree. 甃砂H 猂I: 球猂ȃ球省? has helped to demonstrate to the eastern U.S. orchard fruit industry Expansion of an area-wide pheromone mating disruption approach that there is indeed life after organophosphates! 7 to control two major fruit pests in Pennsylvania orchards. Penn Fruit News 稃砂H 琂I: 瘃甂ȃ眃爁? 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ASJC Scopus subject areas

  • Ecology, Evolution, Behavior and Systematics
  • Insect Science


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