Julius R. Bradley

Works (27)

Updated: April 4th, 2024 23:44

2012 article

Novel adult feeding disruption test (FDT) to detect insecticide resistance of lepidopteran pests in cotton

Kretschmar, B., Cabrera, A. R., Bradley, J. R., & Roe, R. M. (2012, September 6). Pest Management Science, Vol. 69, pp. 652–660.

By: B. Kretschmar n, A. Cabrera n, J. Bradley n & R. Roe n 

author keywords: resistance; bioassay; feeding disruption; Lepidoptera; moth; permethrin
MeSH headings : Animals; Coloring Agents / analysis; Feces / chemistry; Female; Food Deprivation; Gossypium; Herbivory; Insecticide Resistance; Insecticides; Male; Moths; Permethrin; Plant Nectar; Sucrose; Trypan Blue / analysis
topics (OpenAlex): Insect Resistance and Genetics; Insect and Pesticide Research; Insect Pest Control Strategies
TL;DR: Proof of concept was demonstrated for an adult FDT in which resistant moths were distinguished from susceptible moths on the basis of the ability of the insect to feed on insecticide in dyed nectar and produce dyed feces. (via Semantic Scholar)
UN Sustainable Development Goals Color Wheel
UN Sustainable Development Goal Categories
2. Zero Hunger (Web of Science)
Sources: Web Of Science, NC State University Libraries
Added: August 6, 2018

2010 article

Relationship Between External Stink Bug (Hemiptera: Pentatomidae) Boll-Feeding Symptoms and Internal Boll Damage With Respect to Cotton Lint Gin-Out and Fiber Quality

Blinka, E. L., Herbert, A., Malone, S., Duyn, J. W. V., Roberts, P., Bradley, J. R., & Bacheler, J. S. (2010, December 1). Journal of Economic Entomology.

By: E. Blinka*, A. Herbert*, S. Malone *, J. Duyn n, P. Roberts*, J. Bradley n, J. Bacheler n

author keywords: stink bug; cotton; boll damage; external lesions; sampling
MeSH headings : Animals; Cotton Fiber / standards; Feeding Behavior; Gossypium / parasitology; Heteroptera / physiology; Host-Parasite Interactions
topics (OpenAlex): Hemiptera Insect Studies; Insect-Plant Interactions and Control; Research on scale insects
TL;DR: Predictability plots indicated a rapid increase in relationship strength when relating external stink bug lesions to internal damage as the number of external lesions increased, and Gin-turnout and fiber quality decreased with increasing intensity of internal stink bug damage. (via Semantic Scholar)
UN Sustainable Development Goals Color Wheel
UN Sustainable Development Goal Categories
2. Zero Hunger (Web of Science)
13. Climate Action (Web of Science)
15. Life on Land (Web of Science)
Source: Web Of Science
Added: August 6, 2018

2010 article

Spatial and temporal variability in host use by Helicoverpa zea as measured by analyses of stable carbon isotope ratios and gossypol residues

Head, G., Jackson, R. E., Adamczyk, J., Bradley, J. R., Duyn, J. V., Gore, J., … Voth, R. (2010, March 30). Journal of Applied Ecology.

By: G. Head *, R. Jackson*, J. Adamczyk, J. Bradley n, J. Duyn n, J. Gore*, D. Hardee*, B. Leonard* ...

author keywords: Bacillus thuringiensis; cotton; cotton bollworm; insect resistance management; refuge
topics (OpenAlex): Insect Resistance and Genetics; Genetically Modified Organisms Research; Insect and Pesticide Research
TL;DR: Structured refuges, consisting of non-Bt cotton, have been a mandated part of this strategy to produce non-selected insects that are temporally and spatially synchronous with insects from the Bt crop, diluting Bt resistance alleles through mating. (via Semantic Scholar)
UN Sustainable Development Goals Color Wheel
UN Sustainable Development Goal Categories
2. Zero Hunger (Web of Science)
Source: Web Of Science
Added: August 6, 2018

2008 article

Effects of Vegetated Field Borders on Arthropods in Cotton Fields in Eastern North Carolina

Outward, R., Sorenson, C. E., & Bradley, J. R. (2008, February 1). Journal of Insect Science.

By: R. Outward n, C. Sorenson* & J. Bradley*

MeSH headings : Agriculture / methods; Animals; Gossypium / parasitology; Host-Parasite Interactions / physiology; Insecta / physiology; Insecticides; North Carolina; Population Density
topics (OpenAlex): Insect-Plant Interactions and Control; Hemiptera Insect Studies; Insect Resistance and Genetics
TL;DR: Overall, foliage-dwelling predaceous arthropods were somewhat more abundant in fields with borders than in fields without borders, and egg numbers and damage rates were largely unaffected by the presence or absence of a border. (via Semantic Scholar)
UN Sustainable Development Goals Color Wheel
UN Sustainable Development Goal Categories
15. Life on Land (OpenAlex)
Source: NC State University Libraries
Added: August 6, 2018

2008 article

Efficacy of Transgenic Cotton Expressing Cry1Ac and Cry1F Insecticidal Protein Against Heliothines (Lepidoptera: Noctuidae)

Siebert, M. W., Nolting, S., Leonard, B. R., Braxton, L. B., All, J. N., Duyn, J. W. V., … Huckaba, R. M. (2008, December 1). Journal of Economic Entomology.

By: M. Siebert, S. Nolting, B. Leonard, L. Braxton, J. All*, J. Duyn n, J. Bradley n, J. Bacheler n, R. Huckaba*

author keywords: Bacillus thuringiensis; cotton; integrated pest management; tobacco budworm; bollworm
MeSH headings : Animals; Bacillus thuringiensis Toxins; Bacterial Proteins / genetics; Bacterial Proteins / metabolism; Endotoxins / genetics; Endotoxins / metabolism; Gossypium / genetics; Gossypium / growth & development; Hemolysin Proteins / genetics; Hemolysin Proteins / metabolism; Insect Control / methods; Insecticides; Moths; Plants, Genetically Modified / growth & development; Plants, Genetically Modified / metabolism; United States
topics (OpenAlex): Insect Resistance and Genetics; Insect-Plant Interactions and Control; Research in Cotton Cultivation
TL;DR: In situations of moderate to high heliothine infestations, cotton plants expressing Cry1Ac and Cry1F may sustain higher levels of damage compared with that same variety in low infestation levels, indicating cotton plants may compensate for those levels of plant damage. (via Semantic Scholar)
UN Sustainable Development Goals Color Wheel
UN Sustainable Development Goal Categories
2. Zero Hunger (Web of Science)
Source: Web Of Science
Added: August 6, 2018

2008 article

Regional assessment of Helicoverpa zea populations on cotton and non‐cotton crop hosts

Jackson, R. E., Bradley, J. R., Duyn, J. V., Leonard, B. R., Allen, K. C., Luttrell, R., … Head, G. (2008, January 3). Entomologia Experimentalis Et Applicata.

By: R. Jackson*, J. Bradley n, J. Duyn n, B. Leonard*, K. Allen *, R. Luttrell*, J. Ruberson *, J. Adamczyk * ...

author keywords: Bacillus thuringiensis; bollworm; alternative hosts; resistance management; Lepidoptera; Noctuidae; refuge; Cry protein; maize; grain sorghum; peanut; soybean
topics (OpenAlex): Insect Resistance and Genetics; Insect and Pesticide Research; Insect Pest Control Strategies
TL;DR: It is demonstrated that substantial natural refuge is present for Bt‐resistance management of H. zea throughout the mid‐South and Southeast portions of the US cotton belt and that adults move extensively from their natal host origins. (via Semantic Scholar)
UN Sustainable Development Goals Color Wheel
UN Sustainable Development Goal Categories
2. Zero Hunger (Web of Science)
Source: Web Of Science
Added: August 6, 2018

2007 article

Cross-Resistance Responses of Cry1Ac-Selected <I>Heliothis virescens</I> (Lepidoptera: Noctuidae) to the <I>Bacillus thuringiensis</I> Protein Vip3A

Jackson, R. E., Marcus, M. A., Gould, F., Bradley, J. R., & Duyn, J. W. V. (2007, February 1). Journal of Economic Entomology, Vol. 100, pp. 180–186.

By: R. Jackson*, M. Marcus, F. Gould* , J. Bradley* & J. Duyn*

author keywords: Bacillus thuringiensis; Vip3A; Heliothis virescens; cross-resistance; resistance management
topics (OpenAlex): Insect Resistance and Genetics; Insect and Pesticide Research; Insect Pest Control Strategies
TL;DR: Results of these experiments demonstrate that cross-resistance is nonexistent between Cry1Ac and Vip3A in H. virescens, and the introduction of VIP3A-producing lines could delayCry1Ac-res resistance evolution in H., if these lines gain a significant share of the market. (via Semantic Scholar)
UN Sustainable Development Goals Color Wheel
UN Sustainable Development Goal Categories
2. Zero Hunger (Web of Science)
3. Good Health and Well-being (OpenAlex)
Sources: Web Of Science, NC State University Libraries
Added: August 6, 2018

2007 article

Effect of Tobacco Budworm (Lepidoptera: Noctuidae) Infestation Level on Budworm-Resistant and -Susceptible Varieties of Flue-Cured Tobacco in North Carolina

Juba, T. R., Bradley, J. R., Notz, A., Southern, P. S., & Sorenson, C. E. (2007, June 1). Journal of Economic Entomology.

By: T. Juba n, J. Bradley n, A. Notz n, P. Southern n & C. Sorenson n

author keywords: flue-cured tobacco; treatment threshold; damage relationships; infestation
topics (OpenAlex): Insect-Plant Interactions and Control; Weed Control and Herbicide Applications; Insect Pest Control Strategies
TL;DR: The results provide economic support for tolerance of a higher treatment threshold for resistant varieties, as the combination of pest pressure and the benefit of host plant resistance must be greater than the capacity of a susceptible variety to produce competitive yields, despite sustaining significantly higher loss. (via Semantic Scholar)
UN Sustainable Development Goals Color Wheel
UN Sustainable Development Goal Categories
2. Zero Hunger (Web of Science)
3. Good Health and Well-being (OpenAlex)
13. Climate Action (Web of Science)
15. Life on Land (Web of Science)
Source: Web Of Science
Added: August 6, 2018

2007 article

Limitations of stable carbon isotope analysis for determining natal host origins of tobacco budworm, Heliothis virescens

Abney, M. R., Sorenson, C. E., Gould, F., & Bradley, J. R. (2007, November 14). Entomologia Experimentalis Et Applicata, Vol. 126, pp. 46–52.

By: M. Abney n, C. Sorenson n, F. Gould n  & J. Bradley n

author keywords: Lepidoptera; Noctuidae; host plant utilization; isotope ratio mass spectrometry; biological markers
topics (OpenAlex): Isotope Analysis in Ecology; Plant and animal studies; Animal Ecology and Behavior Studies
TL;DR: Results demonstrate that within the range of C3 host plants tested, carbon isotope signatures are not sufficiently unique to enable a reliable determination of natal origin of feral tobacco budworm with current IRMS technology. (via Semantic Scholar)
UN Sustainable Development Goals Color Wheel
UN Sustainable Development Goal Categories
3. Good Health and Well-being (OpenAlex)
14. Life Below Water (Web of Science)
Sources: Web Of Science, NC State University Libraries
Added: August 6, 2018

2006 article

Genetic Variation for Resistance to <I>Bacillus thuringiensis</I> Toxins in <I>Helicoverpa zea</I> (Lepidoptera: Noctuidae) in Eastern North Carolina

Jackson, R. E., Gould, F., Bradley, J. R., & duyn, J. W. V. (2006, October 1). Journal of Economic Entomology, Vol. 99, pp. 1790–1797.

By: R. Jackson n, F. Gould* , J. Bradley* & J. duyn*

MeSH headings : Animals; Bacillus thuringiensis Toxins; Bacterial Proteins; Bacterial Toxins; Endotoxins; Female; Genetic Variation; Gossypium / parasitology; Hemolysin Proteins; Insecticide Resistance / genetics; Larva / growth & development; Moths / genetics; Moths / growth & development; North Carolina
topics (OpenAlex): Insect Resistance and Genetics; Genetically Modified Organisms Research; Insect and Pesticide Research
TL;DR: Results suggesting partially dominant inheritance of resistance to Cry1Ac and Cry2Ab, are critically important for determining appropriate resistance management strategies that impact the sustainability of transgenic cotton, Gossypium hirsutum. (via Semantic Scholar)
Sources: NC State University Libraries, NC State University Libraries
Added: August 6, 2018

2005 journal article

The impact of transgenic cottons expressing one or two proteins from Bacillus thuringiensis on survival and damage potential of first and second instars of Ostrinia nubilalis (Lepidoptera: Crambidae)

Journal of Cotton Science (Online), 9(4), 199.

By: R. Jackson, J. Mahaffey, J. Bradley, J. Van Duyn & C. Sorenson

Source: NC State University Libraries
Added: August 6, 2018

2004 article

Comparative Production of <I>Helicoverpa zea</I> (Lepidoptera: Noctuidae) from Transgenic Cotton Expressing Either One or Two <I>Bacillus thuringiensis</I> Proteins with and without Insecticide Oversprays

Jackson, R. E., Bradley, J. R., Duyn, J. W. V., & Gould, F. (2004, October 1). Journal of Economic Entomology, Vol. 97, pp. 1719–1725.

By: R. Jackson n, J. Bradley n, J. Duyn n & F. Gould n 

author keywords: Bacillus thuringiensis; bollworm; cotton; Helicoverpa zea; resistance management
MeSH headings : Animals; Bacillus thuringiensis; Bacillus thuringiensis Toxins; Bacterial Proteins / biosynthesis; Bacterial Toxins / biosynthesis; Endotoxins / biosynthesis; Gossypium / genetics; Gossypium / parasitology; Hemolysin Proteins; Insecticide Resistance; Insecticides; Lepidoptera; Pest Control, Biological / methods; Plants, Genetically Modified; Population Dynamics
topics (OpenAlex): Insect Resistance and Genetics; Genetically Modified Organisms Research; Viral Infectious Diseases and Gene Expression in Insects
TL;DR: The addition of pyrethroid oversprays to Bollgard II cotton seemed to be the best resistance management strategy available for bollworm because no bollworms were capable of completing development under these conditions. (via Semantic Scholar)
UN Sustainable Development Goals Color Wheel
UN Sustainable Development Goal Categories
2. Zero Hunger (Web of Science)
Sources: Web Of Science, NC State University Libraries
Added: August 6, 2018

2004 article

Performance of Feral and Cry1Ac-Selected Helicoverpa zea (Lepidoptera: Noctuidae) Strains on Transgenic Cottons Expressing One or Two Bacillus thuringiensis ssp. kurstaki Proteins Under Greenhouse Conditions

Jackson, R. E., Bradley, J. R., & Duyn, J. W. V. (2004, January 1). Journal of Entomological Science.

By: R. Jackson n, J. Bradley n & J. Duyn n

author keywords: Bacillus thuringiensis; Helicoverpa zea; bollworm; cotton
topics (OpenAlex): Insect Resistance and Genetics; Viral Infectious Diseases and Gene Expression in Insects; Insect and Pesticide Research
TL;DR: Transgenic cottons that express either one or two Bacillus thuringiensis Berliner proteins, respectively, along with the conventional sister genotype, demonstrated that when averaged across bollworm strains, the Bollgard II genotype significantly reduced larval survival and fruit penetration by bollworms compared to the Boll Gardner variety. (via Semantic Scholar)
UN Sustainable Development Goals Color Wheel
UN Sustainable Development Goal Categories
2. Zero Hunger (Web of Science)
Source: Web Of Science
Added: August 6, 2018

2003 article

Estimated Frequency of Nonrecessive <I>Bt</I> Resistance Genes in Bollworm, <I>Helicoverpa zea</I> (Boddie) (Lepidoptera: Noctuidae) in Eastern North Carolina

Burd, A. D., Gould, F., Bradley, J. R., Duyn, J. W. V., & Moar, W. J. (2003, February 1). Journal of Economic Entomology, Vol. 96, pp. 137–142.

By: A. Burd*, F. Gould* , J. Bradley*, J. Duyn* & W. Moar

author keywords: Bacillus thuringiensis; Bt resistance; gene frequency; bollworm
topics (OpenAlex): Insect Resistance and Genetics; Insect Pest Control Strategies; Insect and Pesticide Research
TL;DR: Results that indicate partially dominant inheritance of Cry1Ac resistance in bollworm are important for determining the rate of resistance evolution in H. zea to specific Bt toxins. (via Semantic Scholar)
UN Sustainable Development Goals Color Wheel
UN Sustainable Development Goal Categories
2. Zero Hunger (Web of Science)
Sources: Web Of Science, NC State University Libraries
Added: August 6, 2018

2003 article

Whitefringed Beetles (Graphognathus spp.) Damage to North Carolina Cotton

Faircloth, J. C., Edmisten, K. L., & Bradley, J. R. (2003, January 1). Journal of Entomological Science.

By: J. Faircloth n, K. Edmisten n & J. Bradley n

author keywords: seedling cotton; conservation tillage; crop host
topics (OpenAlex): Insect-Plant Interactions and Control; Research on scale insects; Insect Resistance and Genetics
Source: Web Of Science
Added: August 6, 2018

2002 article

Effect of Insecticide Treatments and Environmental Factors on Thrips Populations, Plant Growth and Yield of Cotton

Faircloth, J. C., Bradley, J. R., & Duyn, J. W. V. (2002, October 1). Journal of Entomological Science.

By: J. Faircloth n, J. Bradley n & J. Duyn n

author keywords: Frankliniella fusca; Frankliniella occidentalis; Frankliniella tritici; Thrips tabaci; Neohydatothrips variabilis; Gossypium hirsutum
topics (OpenAlex): Insect-Plant Interactions and Control; Research in Cotton Cultivation; Plant Virus Research Studies
TL;DR: Field experiments were conducted in 1997–1999 in Washington Co., NC, to examine how cotton, Gossypium hirsutum, is affected by thrips species composition and abundance, environmental factors, and other factors. (via Semantic Scholar)
UN Sustainable Development Goals Color Wheel
UN Sustainable Development Goal Categories
2. Zero Hunger (Web of Science)
13. Climate Action (Web of Science)
15. Life on Land (Web of Science)
Source: Web Of Science
Added: August 6, 2018

2001 article

Planting Date Effects on Heliothine Larval Numbers, Fruit Damage, and Yield of Transgenic B.t. Cotton in North Carolina

Agi, A. L., Burd, A., Bradley, J. R., & Duyn, J. W. V. (2001, October 1). Journal of Entomological Science.

By: A. Agi n, A. Burd, J. Bradley n & J. Duyn n

author keywords: cotton; bollworm; Helicoverpa zea; Bacillus thuringiensis; transgenic
topics (OpenAlex): Insect Resistance and Genetics; Insect-Plant Interactions and Control; Genetically Modified Organisms Research
TL;DR: The susceptibility of Bollgard® cotton and non-B.t. cotton to bollworm, Helicoverpa zea (Boddie), was examined under contrasting crop management strategies in northeastern North Carolina in 1995. (via Semantic Scholar)
UN Sustainable Development Goals Color Wheel
UN Sustainable Development Goal Categories
2. Zero Hunger (Web of Science)
Source: Web Of Science
Added: August 6, 2018

2001 journal article

Reproductive success and damage potential of tobacco thrips and western flower thrips on cotton seedlings in a greenhouse environment

Journal of Agricultural and Urban Entomology, 18(3), 179–185.

By: J. Faircloth, J. Bradley, J. Van Duyn & R. Groves

Source: NC State University Libraries
Added: August 6, 2018

2000 journal article

Integrating new insecticide technologies in IPM

Emerging Technologies for Integrated Pest Management : Concepts, Research, and Implementation, 384.

By: J. Bradley

Source: NC State University Libraries
Added: August 6, 2018

1999 journal article

Performance of selected Bt cotton genotypes against bollworm in North Carolina

Beltwide Cotton Conferences. Proceedings, 2(1999), 931–934.

John VanDuyn; Julius Bradley; Anthony David Burd

Source: NC State University Libraries
Added: August 6, 2018

1998 journal article

Bollworm (Helicoverpa zea): adaptation to BT toxin?

Beltwide Cotton Conferences. Proceedings, 2(1998), 1033–1037.

By: A. Lambert, J. Bradley, F. Gould  & J. Van Duyn

Source: NC State University Libraries
Added: August 6, 2018

1998 journal article

Effects of a low rate, of aldicarb on soybean and associated pest interactions in fields infested with Heterodera glycines

Nematropica, 28(2), 205–211.

By: S. Koenning, H. Coble, J. Bradley, K. Barker & D. Schmitt

Source: NC State University Libraries
Added: August 6, 2018

1998 journal article

New approaches to insect control

Beltwide Cotton Conferences. Proceedings, 1(1998), 17–18.

By: J. Bradley

Source: NC State University Libraries
Added: August 6, 2018

1997 journal article

Interactions of Helicoverpa zea and BT cotton in North Carolina

Beltwide Cotton Conferences. Proceedings, 2(1997), 870–873.

A. L. Lambert; Julius Bradley; John VanDuyn

Source: NC State University Libraries
Added: August 6, 2018

1996 journal article

Boll weevil eradication: Economic benefits to North Carolina and program status

Special Report (University of Arkansas, Fayetteville. Agricultural Experiment Station), (178), 40.

By: J. Bradley

Source: NC State University Libraries
Added: August 6, 2018

1996 article

Controlling Cotton Pests

Bradley, J. R. (1996, September 20). Science.

By: J. Bradley*

topics (OpenAlex): Insect Resistance and Genetics; Research in Cotton Cultivation
TL;DR: The bollworm outbreak on Bt cotton is not a manifestation of physiological resistance predicted in 1991, but rather, the epidemic apparently arises from extant populations that have the inherent ability to discriminate among tissues with varying concentrations of the toxin within a plant. (via Semantic Scholar)
UN Sustainable Development Goals Color Wheel
UN Sustainable Development Goal Categories
2. Zero Hunger (OpenAlex)
Source: NC State University Libraries
Added: August 6, 2018

1980 chapter

Insect pest management in North Carolina soybeans

In World Soybean Research Conference II: Proceeding (p. 343). Boulder, Colorado: Westview Press Inc.

By: J. Bradley & J. Vab Duyn

Ed(s):

Source: NC State University Libraries
Added: August 6, 2018

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