Integration of Insect and Mite Management With Disease and Weed Control in Pecan Production

  • James D. Dutcher
  • Lenny Wells
  • Timothy B. Brenneman
  • Michael G. Patterson
Part of the Integrated Management of Plant Pests and Diseases book series (IMPD, volume 5)


Pecan orchards in the southeastern US are managed to conserve resources, protect the fruit and foliage from injury caused by phytophagous insects, mites, and pecan scab, and remove competition from weeds during the establishment of newly planted trees and in the preparation of the orchard floor as a harvesting surface. Costs associated with pest control are significant each year and the growers use integrated pest management methods to increase the effectiveness of pesticide treatments and reduce control costs. A coordinated research and extension effort over the past 25 years in entomology, plant pathology, weed science and horticulture has reduced the amount of pesticide use by 35%. Four advances have been responsible for the reduction. First, pecan scab sprays are reduced by linking the frequency of applications to the climatic conditions and the cultivar susceptibiltiy. Second, pest-specific insecticides that are toxic to the pests and not toxic to beneficial insects and mites are used to control lepidopterous pests and conserve aphidophagous insects and mite predators. Third, cover crops have been developed to supplement the soil with nitrogen and organic matter and conserve beneficial insects. Fourth, weed studies have led to the elimination of weeds in the first 8 years after planting around young trees, chemical mowing methods in established orchards and selective grass control to increase the growth of clover cover crops. The development and implementation of these and other significant advances in pecan management are reviewed in this chapter.


Pecan Tree Trap Crop Crimson Clover Orchard Floor Multicolored Asian Ladybeetle 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.


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  1. Adair, H. S. (1927). Black pit of pecan. American Nut Journal, 26, 6–7.Google Scholar
  2. Alabama Cooperative Extension Service. (2007). Commercial pecan: Insect, disease, and weed control recommendations. Alabama pest management handbook. ANR-500-A-1.Google Scholar
  3. Allen, S. C., Jose, S., Nair, P. K. R., Brecke, B. J., Nkedi-Kizza, P., & Ramsey, C. L. (2004). Safety-net role of tree roots: Evidence from a pecan (Carya illinoensis K. Koch)-cotton (Gossypium hirsutum L.) alley cropping system in the southern United States. Forest Ecology and Management, 192, 395–407.CrossRefGoogle Scholar
  4. Ark, P. A. (1954). Some important sources of crown gall bacteria in California orchards. Plant Disease Reporter, 38, 207–208.Google Scholar
  5. Auda, M. (1999). The sweet chestnut throughout history from the Miocene to the third millennium. Acta Horticulturae, 494, 29–36.Google Scholar
  6. Best, L. B., Whitmore, R. C., & Booth, G. M. (1990). Use of cornfields by birds during the breedingseason: The importance of edge habitat. American Midland Naturalist, 12, 84–99.CrossRefGoogle Scholar
  7. Bracewell, C. R., & Stevenson, K. L. (1999). Influence of pecan cultivar and source of inoculum on development of pecan scab. In B. McGraw, E. H. Dean, & B. W. Wood (Eds.), Pecan industry: Current situation and future challenges (pp. 186–188). Proceedings of the 3rd National Pecan Workshop, USDA/ARS Publ. No 1998-04.Google Scholar
  8. Brady, N. C. (1974). The nature and properties of soils (8th ed.). New York: Macmillan Publishing Company.Google Scholar
  9. Brenneman, T. B., Bertrand, P. F., & Mullinix, B. (1999). Spray advisories for pecan scab: Recent developments in Georgia. In B. McGraw, E. H. Dean, & B. W. Wood (Eds.), Pecan industry: Current situation and future challenges (pp. 7–13). Proceedings of the 3rd National Pecan Workshop, USDA/ARS Publication No.1998-04.Google Scholar
  10. Brison, F. R. (1974). Pecan culture. Austin, TX: Capital Printing.Google Scholar
  11. Bugg, R. L., & Dutcher, J. D. (1989). Warm season cover crops for pecans: Horticultural and entomological implications. Biological Agriculture and Horticulture, 6, 123–148.Google Scholar
  12. Bugg, R. L., Dutcher, J. D., & McNeill, P. J. (1990). Cool season cover crops in the pecan understory: Effects on Coccinellidae (Coleoptera) and pecan aphids (Homoptera:Aphididae). Biological Control, 1, 8–15.CrossRefGoogle Scholar
  13. Bugg, R. L., Sarrantonio, M., Dutcher, J. D., & Phatak, S. C. (1991). Understory cover crops in pecan orchards: Possible management systems. American Journal of Alternative Agriculture, 6, 50–62.CrossRefGoogle Scholar
  14. Cedarbaum, S. B., Carroll., J. P., & Cooper, R. J. (2004). Effects of alternative cotton agriculture on avian and arthropod populations. Conservation Biology, 18, 1272–1282.CrossRefGoogle Scholar
  15. Conner, P. (2003). Breeding for scab resistance in pecan. Proceedings of the Southeastern Pecan Growers Association, 96, 47–51.Google Scholar
  16. Converse, R. H. (1960). Physiological specialization of Fusicladium effusum and its evaluation in vitro. Phytopathology, 50, 527–531.Google Scholar
  17. Coolman, D. (2003). LSU AgCenter researcher testing ‘trap crops’ to keep stink bugs out of pecan orchards. Louisiana State University AgCenter News. Baton Rouge, LA: Louisiana State University AgCenter Communications.Google Scholar
  18. Cottrell, T. E., & Wood, B. W., (2003). Pecan weevil management: Past, present and toward a future strategy. Southwestern Entomologist, Suppl. 27, 75–84.Google Scholar
  19. Demaree, J. B., & Cole, J. R. (1929). Behavior of Cladosporium effusum (Wint.) Demaree on some varieties of pecan. Journal of Agricultural Research, 18, 363–370.Google Scholar
  20. Diver, S., & Ames, G. (2000). Sustainable pecan production. Horticulture production guide from the national center for appropriate technology. Retrieved July 19, 2007 from
  21. Dutcher, J., & Htay, T. (1985). Resurgence and insecticide resistance problems in pecan aphid management. In W. W. Neel, W. L. Tedders, & J. Dutcher (Eds.), Aphids and phylloxera of pecan. University of Georgia Agric. Experiment Station Special Publication, 38, 17–29.Google Scholar
  22. Dutcher, J. D., & Beaver, R. W. (2005). Butyl carbitol acetate as an ant repellent on the pecan tree trunk. Journal of Entomological Science, 40, 401–408.Google Scholar
  23. Dutcher, J. D., Estes, P. M., & Dutcher, M. J. (1999). Interactions in entomology: Aphids, aphidophaga and ants in pecan orchards. Journal of Entomological Science, 34, 40–56.Google Scholar
  24. Dutcher, J. D., Fonsah, E. G., & Hudson, W. G. (2006). Management of insect and mite pests in pecan orchards. Recent Research Developments in Entomology, 5, 95–109.Google Scholar
  25. Dutcher, J. D., Harris, M. K., & Dean, D. A. (Eds.). (2003). Integration of chemical and biological insect control in native, seedling, and improved pecan production. Southwestern Entomologist, Suppl. 27.Google Scholar
  26. Dutcher, J. D., Hudson, W. G., &. Ellis, H. C. (2003). Recent advances in pecan pest management in improved and seedling pecan orchards. In J. D. Dutcher, M. K. Harris, & A. Dean (Eds.), Integration of chemical and biological insect control in native, seedling, and improved pecan production (pp. 21–32). Southwestern Entomologist. Suppl. 27.Google Scholar
  27. Dutcher, J. D., & Kaakeh, W. (1992). Improved technique helps-better monitoring of black pecan aphid. Pecan South, 25, 8 & 11.Google Scholar
  28. Dutcher, J. D., & Payne, J. A. (1983). Impact assessment of carbaryl, dimethoate, and dialifor on foliar and nut pests of pecan orchards. Journal of the Georgia Entomological Society, 18, 495–507.Google Scholar
  29. Dutcher, J. D., & Sheppard, D. C. (1983). Predation of pecan weevil larvae by red imported fire ants. Journal of the Georgia Entomological Society, 16, 201–213.Google Scholar
  30. Dutcher, J. D. (1983). Carbaryl and aphid resurgence in pecan. Journal of the Georgia Entomological Society, 18, 492–495.Google Scholar
  31. Dutcher, J. D. (1985). Impact of late season aphid control on pecan tree vigor parameters. Journal of Entomological Science, 20, 55–61.Google Scholar
  32. Dutcher, J. D. (1993). Recent examples of conservation of arthropod natural enemies in agriculture. In R. D. Lumsden & J. L. Vaughn. (Eds.), Pest management: Biologically based technologies. American Chemical Society Conference. Proceedings Series, Washington, DC.Google Scholar
  33. Dutcher, J. D. (2004). Habitat manipulation for enhancement of aphidophagous insects in pecan orchards. In G. M. Gurr (Ed.), Habitat manipulation and arthropod pest management. Special Section. International Journal of Ecology and Enviromental Sciences, 30, 13–22.Google Scholar
  34. Dutcher, J. D., Worley, R. E. Conner, P., & Dove, S. (2001). Pecan varietal differences in hemipteran kernel damage. Journal of Entomological Science, 36, 445–452.Google Scholar
  35. Ekbom, B. S., & Pickering, J. (1990). Pathogenic fungal dynamics in a fall population of the black margined aphid [Monellia caryella (Fitch)] (Homoptera: Aphididae). Entomologia Experimentalis Applicata, 57, 29–37.CrossRefGoogle Scholar
  36. Faircloth, W. H., Patterson, M. G., Foshee, W. G., Nesbitt, M. L., & Goff, W. D. (2007). Comparison of preemergence and postemergence weed control systems in newly established pecan. Weed Technhology 21, 972‐976..CrossRefGoogle Scholar
  37. Finch, C. (2001). Pecan as a shade tree. Texas Cooperative Extension Service. Retrieved on July 10, 2007 from
  38. Foshee, W. G., III, Goodman, R. W., Patterson, M. G, Goff, W. D., & Dozier, W. A. (1997). Weed control increases yield and economic returns from young “Desirable” pecan trees. Journal of the American Society of Horticultural Science, 122, 588–593.Google Scholar
  39. Freemark, K. E., & Kirk., D. A. (2001). Birds on organic and conventional farms in Ontario: partitioning effects of habitat and practices on species composition and abundance. Biological Conservation, 101, 337–350.CrossRefGoogle Scholar
  40. Georgia Cooperative Extension Service. (2007). Commercial Pecan Weed Control. Georgia Pest Management Handbook Retreived on July 19 2007 from
  41. Gessler, C., & Blaise, P. (1994). Differential resistance in apple against scab and its use in breeding and in orchard planting strategies to control the disease. In H. Schmidt & M. Kellerhals (Eds.), Progress in temperate fruit breeding (pp. 99–104). Boston: Kluwer Academic Publications.Google Scholar
  42. Goff, W. D., Patterson, M. G., & West, M. S. (1991). Orchard floor management practices influence elemental concentrations in young pecan trees. HortScience, 26, 1379–1381.Google Scholar
  43. Gottwald, T. R. (1985). Influence of wetness period, leaf age, and spore concentration on infection of pecan leaves by conidia of Cladosporium caryigenum. Phytopathology, 75, 190–194.CrossRefGoogle Scholar
  44. Gottwald, T. R. (1989). Pecan scab. In W. D. Goff, J. R. McVay, & W. S. Gazaway (Eds.), Pecan production in the southeast, a guide for growers (pp. 131–132). Alabama Cooperative Extension Service Publication No. ANR-459.Google Scholar
  45. Gottwald, T. R., & Bertrand, P. F. (1989). Effects of an abbreviated pecan disease control program on pecan scab disease increase and crop yield. Plant Disease, 72, 27–32.CrossRefGoogle Scholar
  46. Graves, C. H., & Diehl, S. (1991). The challenges and prospects for developing pecan cultivars with lasting resistance to crop-limiting diseases. In B. W. Wood & J. A. Payne (Eds.), Pecan USDA/ARS Publ. No. ARS-96, 101–106.Google Scholar
  47. Guillebeau, P. (2001). Crop profile for pecans in Georgia. In S. Toth & R. Stinner (Eds.), USDA Crop Profiles National Sciene Foundation Center for IPM and the Department of Entomology, North Carolina State University.Retrieved on July 19 2007 from
  48. Hall, M. J. (2001). Pecan leaf scorch mite. La. State University: Cooperative Extension Service Bullettin, 2.Google Scholar
  49. Harris, M., Knutson, A., Calixto, A., Dean, A., Brooks, L., & Ree, B. (2003). Impact of red imported fire ant on foliar herbivores and natural enemies. In J. D. Dutcher, M. K. Harris, & D. A. Dean husbandry: challenges and opportunities. Proceedings of the 1st National Pecan Workshop. (Eds.) Integration of chemical and biological insect control in native, seedling, and improved pecan production (pp. 123–134). Southwestern Entomologist, Suppl. 27. Google Scholar
  50. Harris, M. K. (1983). Integrated pest management of pecans. Annual Review of Entomology, 28, 291–318.CrossRefGoogle Scholar
  51. Harris, M. K. (1985). Pecan phenology and pecan weevil biology and management. In W. W. Neel (Ed.), Pecan weevil: Research perspective (pp. 51–58). S-177 Technical Committee. Brandon, MS: Quail Ridge Press, Inc., 127pp.Google Scholar
  52. Havlin, J. L., Beaton, J. D., Tisdale, S. L., & Nelson, W. L. (2005). Soil fertility and fertilizers: An introduction to nutrient management. Upper Saddle River, NJ: Pearson Prentice Hall.Google Scholar
  53. Holm, L., Doll, J., Holm, E., & Pancho, J. V. (1997). World weeds: Natural history and distribution. New York: John Wiley and Sons.Google Scholar
  54. Kaakeh, W., & Dutcher, J. D. (1992). Estimation of life parameters of Monelliopsis pecanis, Monellia caryella and Melanocallis caryaefoliae (Homoptera: Aphididae) on single pecan leaflets. Environmental Entomology, 21, 810–817.Google Scholar
  55. Kaakeh, W., & Dutcher, J. D. (1993a). Effect of rainfall on population abundance of aphids (Homoptera: Aphididae) on pecan. Journal of Entomological Science, 28, 283–286.Google Scholar
  56. Kaakeh, W., & Dutcher J. D. (1993b). Survival of yellow pecan aphids and black pecan aphids (Homoptera: Aphididae) at different temperature regimes. Environmental Entomology, 22, 810–817.Google Scholar
  57. Knezevic, S. Z., Evans, S. P., Blankenship, E. E., Van Acker, R. C., & Lindquist, J. L. (2002). Critical period for weed control: The concept and data analysis. Weed Science, 50, 773–786.CrossRefGoogle Scholar
  58. Knutson, A., & Ree, B. (2000). Controlling the pecan nut casebearer. Texas: Agricultural Extension Service Publication L–5134.Google Scholar
  59. Krispyn, J. W., & Todd, J. W. (1982). The red imported fire ant as a predator of the southern green stink bug on soybean in Georgia. Journal of the Georgia Entomological Society, 17, 19–26.Google Scholar
  60. Latham, A. J., & Goff, W. D. (1991). Pecan scab: A review and control strategies. In B. W. Wood & J. A. Payne (Eds.), Pecan husbandry: Challenges and opportunities (pp. 89–93). Proceedings of the 1st National Pecan Workshop. USDA/ARS Publication ARS-96.Google Scholar
  61. McPherson, J. E., & McPherson, R. M. (2000). Stink Bugs of Economic Importance in America North of Mexico., Boca Raton, FL: CRC Press.CrossRefGoogle Scholar
  62. Mizell, R. F., III. (1984). Risk rating: A fruitful approach toward management of the pecan weevil? In W. W. Neel, & P. P. Sikorowski (Eds.), Pecan weevil: Research perspectives. Brandon, MS: Quail Ridge Press.Google Scholar
  63. Mizell, R. F., & Knox, G. W. (1993). Susceptibility of crape myrtle, Lagerstroemia indica L. to the crapemyrtle aphid, Sarucallis kahawaluokalani (Kirkaldy) in North Florida. Journal of Entomological Science, 28, 1–7.Google Scholar
  64. Mizell, R. F., & Schiffhauer, D. E. (1987). Seasonal abundance of the crapemyrtle aphid Sarucallis kahawaluokalani (Kirkaldy) in relation to the pecan aphids Monellia caryella (Fitch) and Monelliopsis pecanis (Bissell) and their common predators. Entomophaga, 32, 511–520.CrossRefGoogle Scholar
  65. Mulder, P. G., & Grantham, R. (2002). The pecan nut casebearer. Oklahoma Cooperative Extension Service Publication EPP-7189.Google Scholar
  66. Mundt, C. C. (2002). Use of multiline cultivars and cultivar mixtures for disease management. Annual Reviews of Phytopathology, 40, 381–410.CrossRefGoogle Scholar
  67. Norris, R. F., & Kogan, M. (2005). Ecology of interactions between weeds and arthropods. Annual Reviews of Entomology, 50, 479–503.CrossRefGoogle Scholar
  68. Ostry, M. E., & Nicholls, T. H. (1978). How to identify and control sapsucker injury on trees. United States Fish & Wildlife Service, U.S. Government Printing Office no. 1978-666–255.Google Scholar
  69. Patterson, M. G. (2005a). Width of weed-free area required for young pecans. Annual Meeting Program of the Weed Science Society of America, Abstract no. 71,Google Scholar
  70. Patterson, M. G. (2005b). Controlling problem weeds in pecan orchards. Proceedings of the Southeastern Pecan Growers Association, 98, 85–86.Google Scholar
  71. Patterson, M. G., & Goff, W. D. (1993). Effects of weed control and irrigation on pecan (Carya illinoinensis) growth and yield. Weed Technology, 8, 717–719.Google Scholar
  72. Patterson, M. G., Wehtje, G., & Goff W. D. (1990). Effects of weed control and irrigation on the growth of young pecans. Weed Technology, 4, 892–894.Google Scholar
  73. Payne, J. A., & Dutcher, J. D. (1985). Pesticide efficacies for the pecan weevil past, present and future. In W. W. Neel (Ed.), Pecan weevil: Research perspective (pp. 103–116). Brandon, MS: Quail Ridge Press.Google Scholar
  74. Payne, J. A., & Johnson, W. T. (1979). Pecan pests. In R. Jaynes (Ed.), Nut tree culture in North America (p. 314–395). Hamden, CT: Northern Nut Growers Association.Google Scholar
  75. Pena, J. G. (2006). Trends in pecan production and consumption. In L. Lombardini (Ed.), Proceedings of the meeting of Pecan Scientist. College Station, TX: Horticulture Department, Texas A & M University.Google Scholar
  76. Pickering, J., Hargrove, W. H., Dutcher, J. D., & Ellis, H. C. (1990). RAIN: A novel approach to computer-aided decision making in agriculture and forestry. Computers and Electronics in Agriculture, 4, 275–285.CrossRefGoogle Scholar
  77. Pickering, J., Dutcher, J. D., & Ekbom, B. S. (1990). The effect of a fungicide on fungal induced mortality of pecan aphids (Homoptera: Aphididae) in the field. Journal of Economic Entomology, 83, 1801–1805.Google Scholar
  78. Pollack, S. (2001). Fruit and tree nuts – Situation and outlook yearbook. Market and Trade Bulletin, ERS, USDA, FTS-294.Google Scholar
  79. Raney, H. G., & Eikenbary, R. D. (1968). Investigations on flight habits of the pecan weevil, Curculio caryae (Coleoptera: Curculionidae). Canadian Entomologist, 100, 1091–1095.CrossRefGoogle Scholar
  80. Raney, H. G., Eikenbary, R. D., & Flora, N. W. (1970). Population density of the pecan weevil under ‘Stuart’ pecan trees. Journal of Economic Entomology, 63, 697–700.Google Scholar
  81. Ree, B., Knutson, A., & Harris M. (2005). Controlling the pecan weevil. Texas Agricultural Extension Service Publication E-343.Google Scholar
  82. Reid, W., & Hunt, K. L. (2000). Pecan production in the Northern United States. HortTechnology, 10, 298–301.Google Scholar
  83. Reid, W., & Mulder, P. G. (2003). Insect pest management systems for native pecans. In J. D. Dutcher, M. K. Harris, & A. Dean (Eds.), Integration of chemical and biological insect control in native, seedling, and improved pecan production (pp. 39–44). Southwestern Entomologist, Suppl. 27.Google Scholar
  84. Rice, G. W. (1994). Pecans – A grower’s perspective. Manhattan, NY: Ag Press, Inc.Google Scholar
  85. Rice, N. R., Smith, M. W., Eikenbary, R. D., Arnold, D., Tedders, W. L., Wood, B., et al. (1998). Assessment of legume and nonlegume ground covers on Coleoptera: Coccinellidae density for low-input pecan management. American Journal of Alternative Agriculture, 13, 111–123.CrossRefGoogle Scholar
  86. Rodenhouse, N. L., Best, L. B., O'Connor, R. J., & Bollinger, E. K. (1993). Effects of temperate agriculture on neotropical migrant landbirds. In D. M. Finch & T. Stangel (Eds.), Status and management of neotropical migratory birds (pp. 280–295). Fort Collins, CO: United States Forest Service, Rocky Mountain Forest Range Experimental Station.Google Scholar
  87. Rodenhouse, N. L., Best, L. B., O'Connor, R. J., & Bollinger, E. K. (1995). Effects of agricultural practices and farmland structures. In T. E. Martin & D. M. Finch (Eds.), Ecology and management of neotropical migratory birds: A synthesis and review of critical issues. New York: Oxford University Press.Google Scholar
  88. Russell, C. E. (1981). Predation on the cowpea curculio by the red imported fire ant. Journal of the Georgia Entomological Society, 16, 13–15.Google Scholar
  89. Shapiro-Ilan, D. I. (2001). Virulence of entomopathogenic nematodes to pecan weevil larvae Curculio caryae (Coleoptera: Curculionidae) in the laboratory. Journal of Economic Entomology, 94, 7–13.CrossRefPubMedGoogle Scholar
  90. Shapiro-Ilan, D. I., Cottrell, T., & Gardner, W. A. (2004). Trunk perimeter applications of Beauveria bassiana to suppress adult Curculio caryae (Coleoptera: Curculionidae). Journal of Entomological Science, 39, 337–349.Google Scholar
  91. Shorey, H. H., Gaston, L. K., Gerber, R. G., Sisk, C. B., & Phillips, P. A. (1996). Formulating farnesol and other ant-repellent semiochemicals for exclusion of Argentine ants (Hymenoptera, Formicidae) from citrus trees. Environmental Entomology, 25, 114–119.Google Scholar
  92. Smith, D., Harris, M., Lee, T., McEachern G., & Ree, B. (2002). Crop profile for pecans in Texas. USDA/CSREES Crop Profiles. Retrieved on July 19, 2007 from
  93. Smith, M. S., Shiferaw, A., & Rice, N. R. (1996). Legume cover crops as a nitrogen source for pecan. Journal of Plant Nutrition, 19, 1117–1130.CrossRefGoogle Scholar
  94. Smith, M. T. (1996). Trap cropping system for control of hemipteran in pecans: A progress report. Proceedings of the Southeastern Pecan Growers Association, 89, 71–81.Google Scholar
  95. Smith, M. T. (1999). Managing kernel feeding hemipterans in pecans. In B. McGraw, E. H. Dean & B. W. Wood (Eds.), Pecan industry: Current situation and future challenges (pp. 163–166). Proceedings of the 3rd National Pecan Workshop. USDA/ARS Publication 1998-04.Google Scholar
  96. Smith, M. W., & Carroll, B. L. (2004). Weed control in pecans, apples and peaches. CR-6242. Oklahoma Cooperative Extension Service, Stillwater, OK.
  97. Smith, M. W., Cheary, B. S., & Carroll B. L. (2005). Temporal weed interference with young pecan trees. HortScience, 40, 1723–1725.Google Scholar
  98. Southern Weed Science Society. (2006). Proceedings of the southern weed science society conference. (Vol. 59). Champaign, IL: SWSS.Google Scholar
  99. Southern Weed Science Society. (2007). Weed identification guide. Champaign, IL: SWSS. Order online at
  100. Sparks, D. (1992). Pecan cultivars. The orchard’s foundation. Watkinsville, GA: Pecan Production Innovations.Google Scholar
  101. Stevenson, K. L. (1995). Distribution and sporulation of overwintered scab lesions on pecan shoots. In M. W. Smith, W. Reid, & B. W. Wood. (Eds.), Sustaining pecan productivity into the 21st century (p. 78). Proceedings of the 2nd National Pecan Workshop. USDA/ARS Publication No. ARS-1995-3.Google Scholar
  102. Stevenson, K. L., Bertrand, P. F., & Brenneman, T. B., (2004). Evidence for reduced sensitivity to propiconazole in the pecan scab fungus in Georgia. Phytopathology, 94, S99.Google Scholar
  103. Tedders, W., & Wood, B. (1985). Estimate of the influence of feeding by Monellia caryella (Fitch) and Monelliopsis pecanis (Bissell) (Homoptera: Aphididae) on the fruit, foliage, carbohydrate reserves, and tree productivity of mature ‘Stuart’ pecans. Journal of Economic Entomology, 78, 642–646.Google Scholar
  104. Tedders, W. L. (1977). Preliminary evaluation of the insect growth regulator diflubenzuron against pecan pests. Journal of the Georgia Entomological Society, 12, 243–247.Google Scholar
  105. Tedders, W. L. (1978). Important biological and morphological characteristics of the foliar-feeding aphids of pecan. USDA Technical Bulletin 1579.Google Scholar
  106. Tedders, W. L. (1985). Potential for the control of pecan weevil with selected biological agents. In W .W. Neel (Ed.), Pecan weevil: Research perspective (pp. 117–127). Brandon, MS: Quail Ridge Press.Google Scholar
  107. Tedders, W. L., Reilly, C., Wood, B., Morrison, R., & Lofgren, C. (1990). Behavior of Solenopsis invicta (Hymenoptera: Formicidae) in pecan orchards. Environmental Entomology, 19, 44–53.Google Scholar
  108. Tedders, W. L., & Schaefer, P. (1994). Release and establishment of Harmonia axyridis (Coleoptera: Coccinellidae) in the Southeastern U.S. Entomol News, 105, 228–243.Google Scholar
  109. Tedders, W. L., Weaver, D. J., & Wehunt, E. J. (1973). Pecan weevil: Suppression of larvae with the fungi Metarhizium anisopliae and Beauveria bassiana and the nematode Neoaplectana dutkyi. Journal of Economic Entomology, 66, 723–725.Google Scholar
  110. United States Department of Agriculture. (2000). Agricultural chemical usage 1999 fruit and nut summary. National Agricultural Statistics Service. Retrieved July 15, 2007 from
  111. United States Environmental Protection Agency. (2004). Trapping stinkbugs the natural way. Nonpoint Source News-Notes, 73, 12–13Google Scholar
  112. Von Broembsen, S. L., Driever, G. F., Smith, M. W., Duthie, J. A., & Carlson, J. D. (1999). Pecan scab management: A predictive model for Oklahoma. In B. McGraw, E. H. Dean, & B. W. Wood (Eds.), Pecan industry: Current situation and future challenges (p. 14-17). Proceedings of the 3rd National Pecan Workshop, USDA/ARS Publication No. 1998-04.Google Scholar
  113. Warburton, D. B., & Klimstra, W. D. (1984). Wildlife use of no-till and conventionally tilled corn fields. Journal of Soil and Water Conservation, 39, 327–330.Google Scholar
  114. Weinbaum, S. A., Johnson, R. S., & Dejong, T. M. (1992). Causes and consequences of overfertilization in orchards. HortTechnology, 2, 112–121.Google Scholar
  115. Wells, M. L. (Ed.). (2007). Southeastern pecan growers handbook. University of Georgia Cooperative Extension Service Publication No. 1327.Google Scholar
  116. White, A. W., Beaty, E. R., & Tedders, W. L. (1981). Legumes as a source of nitrogen and effects of management practices on legumes in pecan orchards. Proceedings of the Southeastern Pecan Growers Association, 74, 97–106.Google Scholar
  117. Williams-Woodward, J. L. (2003). Georgia plant disease loss estimates. University of Georgia Cooperative Extension Service Publication No. SB41-06.Google Scholar
  118. Wiedenfeld, B., Fenn, L. B., Miyamoto, S., Swietlik, D., & Marlene, C. (1999). Using sod to manage nitrogen in orchard floors. Communications in Soil Science and Plant Analysis, 30, 353–363.CrossRefGoogle Scholar
  119. Wood, B. & Reilly, C. (1998). Susceptibility of pecan to black pecan aphids. HortScience, 33, 798–801.Google Scholar
  120. Wood, B., Tedders, W., & Dutcher, J. (1987). Energy drain by three pecan aphid species (Homoptera: Aphididae) and their influence on in-shell pecan production. Environmental Entomology, 16, 1045–1056.Google Scholar
  121. Wood, B., Tedders, W., & Thompson, J. (1985). Feeding influence of three pecan aphid species on carbon exchange and phloem integrity of seedling pecan foliage. Journal American Society of Horticultural Science, 110, 393–397.Google Scholar
  122. Wood, B. W. (2003). Pecan production in North America. In J. D. Dutcher, M. K. Harris & A. Dean (Eds.), Integration of chemical and biological insect contol in native, seedling, and improved pecan production (pp. 1–20). Southwestern Entomologist. Suppl. 27.Google Scholar
  123. Worley, R. E. (1994). Pecan production. Chapter 2. In C. R. Santerre (Ed.), Pecan technology (pp. 12–38). New York: Chapman and Hall.Google Scholar
  124. Worley, R. E. (2002). Compendium of pecan production and research. Ann Arbor, MI: Edwards Brothers Inc.Google Scholar
  125. Worley, R. E., & Mullinix, B. (1997). Pecan cultivar performance at the coastal plain experiment station, 1921–1994. University of Georgia Agricultural Experiment Station Bulletin 426.Google Scholar
  126. Zimdahl, R. L. (2004). Weed-crop competition: A review. (pp. 49–50, 109–145). Ames, IA: Blackwell Publishing.Google Scholar

Copyright information

© Springer Science+Business Media B.V. 2010

Authors and Affiliations

  • James D. Dutcher
    • 1
  • Lenny Wells
    • 2
  • Timothy B. Brenneman
    • 3
  • Michael G. Patterson
    • 4
  1. 1.Entomology DepartmentUniversity of GeorgiaTiftonUSA
  2. 2.Horticulture DepartmentUniversity of GeorgiaTiftonUSA
  3. 3.Plant Pathology DepartmentUniversity of GeorgiaTiftonUSA
  4. 4.Department of Agronomy and SoilsAuburn UniversityTiftonUSA

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