NC State Extension

Proper Citation

Publications (since 2000)

Hardee, D.D, J.W. Van Duyn, M.B Layton, and R.D. Bagwell. 2000. B.t. Cotton & the Tobacco Budworm-Bollworm Complex. USDA-ARS-154. 37pp. 

Sorenson, C.E., R.A. Ihrig, J.R. Bradley, Jr., J.W. Van Duyn and D.A. Herbert. 2000. Comparison of two computer techniques and a visual technique for the estimation of wheat leaf consumption by cereal leaf beetle (Coleoptera:Chrysomelidae). J. Entomol. Sci. 35:391-401. 

Suh, C. P.C., D. B. Orr, and J. W. Van Duyn. 2000. Effect of insecticides on Trichogramma exiguum(Trichogrammatidae: Hymenoptera) preimaginal development and adult survival. J. Econ. Entomol. 93:577-583. 

Suh, C. P.C., D. B. Orr, and J. W. Van Duyn. 2000. Trichogramma exiguum (Trichogrammatidae: Hymenoptera) releases in North Carolina cotton: Part I. Evaluation of heliothine pest suppression. J. Econ. Entomol. 93:1127-1136. 

Suh, C. P.C., D. B. Orr, and J. W. Van Duyn. 2000. Trichogramma exiguum (Trichogrammatidae: Hymenoptera) releases in North Carolina cotton: Part II. Why releases fail to suppress heliothine pests. J. Econ. Entomol. 93:1137-1145. 

Agi, A. L., J. S. Mahaffey, J. R. Bradley, and J. W. Van Duyn. 2001. Efficacy of seed mixes of transgenic B.t.and nontransgenic cotton against bollworm. J. Cotton Sci. 5(2): 74-80. 

Agi, A. L., A. Burd, J. R. Bradley, Jr., and J. W. Van Duyn. 2001. Planting date effect on heliothine larval numbers, fruit damage, and yield of transgenic B.t. cotton in North Carolina. J. Entomol. Sci. 36(4):402-410. 

Faircloth, J. C., J. R. Bradley, Jr., J. W. Van Duyn, and R. L. Groves. 2001. Reproductive success and damage potential of tobacco thrips and western flower thrips on cotton seedlings in a greenhouse environment. J. Agric. Sci. 37(4):308-316. 

Ihrig, R. A., D. A. Herbert, Jr., J. W. Van Duyn and J. R. Bradley, Jr. 2001. Relationship between cereal leaf beetle (Coleoptera: Chrysomelidae) egg and fourth instar populations and impact of fourth instar defoliation of winter wheat yields in North Carolina and Virginia. J. Econ. Entomol. 94:634-639. 

Storer N. G., G. G. Kennedy, and J. W. Van Duyn. 2001. Life history traits of Helicoverpa zea (Lepidoptera: Noctuidae) on non-B.t. and B.t. transgenic corn hybrids in eastern North Carolina. J. Econ. Entomol. 94:1162-1169. 

Storer N, G., Steve Peck, Fred Gould, John W. Van Duyn, and George G. Kennedy. 2001. Spatial processes in the evolution of resistance in Helicoverpa zea (Lepidoptera: Noctuidae) to B.t. transgenic corn and cotton in a mixed agroecosystem: a biology-rich stochastic simulation model. J. Econ. Entomol. 96:173-188. 

Jackson, R.E., J.R. Bradley,Jr., F. Gould and J.W. Van Duyn. 2002. Genetic Variation for Resistance to Cry1Ac and Cry2Ab in Bollworm,Helicovepa zea, in North Carolina. Proc. Beltwide Cotton Conf. National Cotton Council, Memphis, TN. 

Jackson, R.E., J.R. Bradley,Jr., F. Gould and J.W. Van Duyn. 2002. Estimated Production of Helicovepa zeaadults form Bollgard and Bollgard II cottons and implication for resistance Management. Proc. Beltwide Cotton Conf. National Cotton Council, Memphis, TN. 

Suh, C. P-C., David Orr, John Van Duyn, and Daniel Borchert. 2002. Influence of cotton microhabitat on temperature and survival of Trichogramma (Hymenoptera: Trichogrammatidae) within cardboard capsules. Environ. Entomol. 31(2): 361-366. 

Faircloth, J. C., J. R. Bradley, Jr., and J. W. Van Duyn. 2002. Growth and productivity of cotton plants as affected by thrips species, thrips population size, insecticides, and environmental factors. J. Entomol. Sci. 37(4):308-316. 

Ambrose, M. L., J. R. Bradley, Jr., and J. W. Van Duyn. 2003. Comparative ovicidal activity of various neonicotinoids against current standards in cotton. Proc. Beltwide Cotton Conf. National Cotton Council, Memphis, TN. p.p. 1382-1384 

Burd, A. D., F. Gould, J. R. Bradley, J. W. Van Duyn, and W. J. Moar. 2003. Estimated frequency of nonrecessive B.t. resistance genes in bollworm, Helicoverpa zea (Boddie)(Lepidoptera: Noctuidae) in eastern North Carolina. J. Econ. Entomol. 96: 137-142. 

Jackson, R. E., J. R. Bradley, Jr. and J. W. Van Duyn. 2003. Field performance of transgenic cottons expressing one or two Bacillus thuringiensis spp. kurstaki endotoxins against bollworm, Helicoverpa zea(Boddie), (Lepidoptera: Noctuidae). J. Cotton Sci. 7:57-64. 

Jackson, R. E., J. R. Bradley, Jr., and J. W. Van Duyn. 2003. Bollworm population production and associated damage in Bollgard and Bollgard II cottons under insecticide-treated and non-treated conditions. Proc. Beltwide Cotton Conf., National Cotton Council, Memphis, TN. p.p.1022-1025. 

Jackson, R. E., J. R. Bradley, Jr., and J. W. Van Duyn. 2003. Quantification of Helicoverpa zea populations in eastern North Carolina crop environments: implications for B.t. resistance management. Proc. Beltwide Cotton Conf., National Cotton Council, Memphis, TN. p.p.1168-1176. 

Jackson, R. E., J. R. Bradley, Jr., F. Gould, and J. W. Van Duyn. 2003. B.t. resistance evolution in theHelicoverpa zea population in eastern North Carolina. Proc. Beltwide Cotton Conf., National Cotton Council, Memphis, TN. 

Bradley, J. R., Jr., J. W. Van Duyn, and R. E. Jackson. 2004. VipCot: Field performance in North Carolina under conditions of high bollworm populations. Proc. Beltwide Cotton Conf. p.p. 1362-1364. 

Jackson, R. E., J. R. Bradley, Jr. and J. W. Van Duyn. 2004. Performance of feral and Cry1Ac-selectedHelicoverpa zea (Lepidoptera: Noctuidae) strains on transgenic cottons expressing one or two Bacillus thuringiensis spp. kurstaki proteins under greenhouse conditions. J. Entomol. Sci. 39: 46-55. 

Jackson, R. E., J. R. Bradley, Jr., J. W. Van Duyn, and F. Gould. 2004. Comparative production of bollworm,Helicoverpa zea (Boddie) (Lepidoptera: Noctuidae), from transgenic cottons expressing either one or twoBacillus thuringiensis Berliner proteins with and without insecticidal oversprays. . J. Econ. Entomol. 97: 1719-1725. 

Jackson, R. E., J. R. Bradley, and J. W. Van Duyn. 2004. Temporal and spatial production of bollworm from various host crops in North Carolina: implications for B.t. resistance management. Proc. Beltwide Cotton Conf. 1637-1640. 

Kurtz, R. W., F. Gould, J. R. Bradley, Jr., and J. W. Van Duyn. 2004. Helicoverpa zea fitness on B.t. corn and cotton in eastern North Carolina: potential effects of alternate host crops and pyramided Bt plants. Proc. Beltwide Cotton Conf. 1430-1434. 

Marcus, M., J. R. Bradley, Jr., F. Gould, and J. W. Van Duyn. 2004. Fitness evaluations of Helicoverpa zea(Boddie) from Bollgard cotton in subsequent generations. Proc. Beltwide Cotton Conf. 1390-1394. 

Blinka, Eric L., J. R. Bradley, and John Van Duyn. 2005. Spatial and temporal occurrence of brown stinkbug (Euschistus servus, Say) in eastern North Carolina ecosystems. Proceedings of the Beltwide Cotton Conferences.p.p. 1437-1441. 

Jackson, R. E., J. R. Bradley, Jr. and J. W. Van Duyn. 2005. Comparative efficacy of B.t. technologies against bollworm in North Carolina. Proceedings of the Beltwide Cotton Conferences.p.p.1373-1378. 

Jackson, R. E., J. S. Mahaffey, J. R. Bradley, Jr. and J. W. Van Duyn. 2005. The impact of Ostrinia nubilalis(Hubner) larval instar on survival and damage potential on cotton bolls that produce one or two Bacillus thuringiensis toxins. J. Cotton Sci. 9: 199-203. 

Kurtz, Ryan W., J. R. Bradley, Jr. and John W. Van Duyn. 2005. B.t. resistance management for an eastern North Carolina Helicoverpa zea population: Potential role of soybeans, mandated refuges, and pyramided B.t.plants. Proceedings of the Beltwide Cotton Conferences. p.p. 1522-1526. 

Marcus, M. A., J. R. Bradley, Jr., F. L. Gould, and J. W. Van Duyn, 2005. Cross resistance evaluations of Cry1Ac tolerant strains of tobacco budworm, Heliothis virescens, to the novel insecticidal protein Vip3A. Proceedings of the Beltwide Cotton Conferences. p.p.1564-1569 

Roe, R. M., J. Van Kretschmar, D. M. Thompson, K. V. Donohue, C. E. Sorenson, G. D. Thompson, N. P. Storer, C. Blanco, J. D. Lopez Jr., B. R. Leonard, John Van Duyn, A. Kilpatrick, A. Hagerty, and Debbie Brickle. 2005. Larval feeding disruption tests (FDT) for monitoring insect resistance to Cry1Ac, Cry1F, and Cry1Ab. 2005. Proceedings of the Beltwide Cotton Conferences. p.p. 1651-1662 

John W. Van Duyn, Eric L. Blinka, and J. R. Bradley, Jr. 2005. Impacts of plant-feeding bug complex on cotton cultured under protected and unprotected environments in North Carolina. Proceedings of the Beltwide Cotton Conferences. p.p. 1396- 1403 

Bacheler, Jack, Phillip Roberts, Eric L. Blinka, John Ruberson, Dan W. Mott, David E. Morrison, Thomas Pegram, John W. Van Duyn, and J. R. Bradley. 2006. Relationship between cotton phenology and bug pressure vs. yield and quality in a progressive spray environment. Proceedings Beltwide Cotton Conferences, National Cotton Council, Memphis, TN. p.p. 1393-1399. 

Blinka, Eric L., Jack Bacheler, J. R. Bradley, and John W. Van Duyn. 2006. Stink bug distribution based on black light trap captures across North Carolina in relation to surrounding agricultural host plant ratios. Proceedings Beltwide Cotton Conferences, National Cotton Council, Memphis, TN. p.p. 967-968. 

Goerger, Carter, D. Ames Herbert, John Van Duyn, Sean Malone, and Carlyle Brewster. 2006. Association of bug-induced boll damage symptoms with hard lock, lint yield, and quality. Proceedings Beltwide Cotton Conferences, National Cotton Council, Memphis, TN. p.p. 1352-1358. 

Jackson, R. E., Sean Malone, J. R. Bradley, John Van Duyn, Ames Herbert, and R. M. Huckaba. 2006. Efficacy of Widestrike and Bollgard II cottons against bollworm under insecticide-sprayed and non-sprayed conditions in North Carolina and Virginia. Proceedings Beltwide Cotton Conferences, National Cotton Council, Memphis, TN. p.p. 1531- 1535. 

Jackson, R. E., M. A. Marcus, Fred Gould, J. R. Bradley, and John Van Duyn. 2006. Cross-resistance levels between the Bacillus thuringiensis proteins CRY1AC and VIP3A in Heliothis virescens. Proceedings Beltwide Cotton Conferences, National Cotton Council, Memphis, TN. p.p. 1215-1221. 

Kurtz, Ryan W., Fred Gould, J. R. Bradley, and John Van Duyn. 2006. Evaluating B.t. IRM requirements in North Carolina through computer modeling. Proceedings Beltwide Cotton Conferences, National Cotton Council, Memphis, TN. p.p. 1484-1491. 

Morrison, David, Tom Pegram, John Van Duyn, Jack Bacheler, Eric Blinka, Dan Mott, J. R. Bradley, Ames Herbert, Carter Goerger, Phillip Roberts, and John Ruberson. 2006. Identifying practical knowledge and solutions for managing the sucking bug complex in cotton: Research in the southeast region; A progress report. 2006. Proceedings Beltwide Cotton Conferences, National Cotton Council, Memphis, TN. p.p. 1609-1610. 

Roberts, Phillip M., Jack S. Bacheler, Eric L. Blinka, John Van Duyn, J. R. Bradley, Dan Mott, and John Ruberson. 2006. Variability in the relationship between bug damaged bolls and yield. Proceedings Beltwide Cotton Conferences, National Cotton Council, Memphis, TN. p.p. 1400-1403. 

Gould, Fred, Michael B. Cohen, J. S. Bentur, George G. Kennedy, and John Van Duyn. 2006. Impact of small fitness costs on pest adaptation to crop varieties with multiple toxins; A heuristic model. J. Econ. Entomol. 99: 2091-2099. 

Jackson, R. E., F. Gould, J. R. Bradley, Jr., and J. W. Van Duyn. 2006. Genetic variation for resistance toBacillus thuringiensis toxins in Helicoverpa zea (Lepidoptera: Noctuidae) in eastern North Carolina. J. Econ. Entomol. 99:1790-1797. 

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