Stephen Robert Koenning

Works (51)

Updated: April 4th, 2024 17:40

2020 journal article

Corn Yield Loss Estimates Due to Diseases in the United States and Ontario, Canada, from 2016 to 2019

PLANT HEALTH PROGRESS, 21(4), 238–247.

author keywords: corn; maize; disease; yield loss; economic loss
Sources: Web Of Science, NC State University Libraries
Added: January 4, 2021

2020 journal article

Molecular Characterization of an Emerging Root-Knot Nematode Meloidogyne enterolobii in North Carolina, USA

PLANT DISEASE, 105(4), 819–831.

By: W. Ye*, S. Koenning n, Y. Zeng*, K. Zhuo* & J. Liao*

author keywords: 28S D2/D3; DNA sequencing; field crops; internal transcribed spacer 1; mitochondrial DNA cytochrome oxidase gene subunit II-16S; molecular diagnosis; nematodes; pathogen detection; rDNA 18S
MeSH headings : Animals; China; Florida; Louisiana; North Carolina; Plant Diseases; Plant Roots; South Carolina; Tylenchoidea / genetics
TL;DR: One hundred and thirty-five representative RKN populations from North Carolina were characterized and identified as M. enterolobii and six populations from China where the species was originally described were included in this study for identity confirmation and comparison. (via Semantic Scholar)
UN Sustainable Development Goal Categories
2. Zero Hunger (Web of Science)
13. Climate Action (Web of Science)
Source: Web Of Science
Added: July 6, 2021

2017 journal article

Soybean cyst nematode culture collections and field populations from North Carolina and Missouri reveal high incidences of infection by viruses

PLOS ONE, 12(1).

By: C. Ruark n, S. Koenning n, E. Davis n, C. Opperman n, S. Lommel n, M. Mitchum*, T. Sit n

Contributors: C. Ruark n, S. Koenning n, E. Davis n, C. Opperman n, S. Lommel n, M. Mitchum*, T. Sit n

Ed(s): A. Rao

MeSH headings : Animals; DNA-Directed RNA Polymerases / metabolism; Gene Expression Regulation, Plant; Incidence; Life Cycle Stages / genetics; Missouri; North Carolina; Plant Diseases / parasitology; Plant Diseases / statistics & numerical data; Plant Diseases / virology; Plant Viruses / physiology; Real-Time Polymerase Chain Reaction; Soybeans / genetics; Soybeans / parasitology; Soybeans / virology; Species Specificity; Tylenchoidea / growth & development; Tylenchoidea / physiology; Virus Replication / physiology
TL;DR: Viral titers within SCN greenhouse cultures were similar throughout juvenile development, and the presence of viral anti-genomic RNAs within egg, second-stage juvenile (J2), and pooled J4 stages suggests active viral replication within the nematode. (via Semantic Scholar)
UN Sustainable Development Goal Categories
2. Zero Hunger (Web of Science)
13. Climate Action (Web of Science)
15. Life on Land (OpenAlex)
Sources: Web Of Science, ORCID, NC State University Libraries
Added: August 6, 2018

2014 journal article

A Coordinated Effort to Manage Soybean Rust in North America: A Success Story in Soybean Disease Monitoring

PLANT DISEASE, 98(7), 864–875.

By: E. Sikora*, T. Allen*, K. Wise*, G. Bergstrom*, C. Bradley*, J. Bond*, D. Brown-Rytlewski*, M. Chilvers* ...

TL;DR: The rapid response to the threat of SBR in North America resulted in an unprecedented amount of information dissemination and the development of a real-time, publicly available monitoring and prediction system known as the Soybean Rust-Pest Information Platform for Extension and Education (SBR-PIPE). (via Semantic Scholar)
Source: Web Of Science
Added: August 6, 2018

2013 article

First Report of Meloidogyne enterolobii on Cotton and Soybean in North Carolina, United States.

Ye, W. M., Koenning, S. R., Zhuo, K., & Liao, J. L. (2013, September). PLANT DISEASE, Vol. 97, pp. 1262–1262.

By: W. Ye*, S. Koenning n, K. Zhuo* & J. Liao*

TL;DR: Of particular concern is its ability to develop on crop genotypes carrying root-knot-nematode resistance genes (Mi-1, Mh, Mir1, N, Tabasco, and Rk) in tobacco, tomato, soybean, potato, cowpea, sweet potato, and cotton. (via Semantic Scholar)
UN Sustainable Development Goal Categories
2. Zero Hunger (Web of Science)
13. Climate Action (Web of Science)
Source: Web Of Science
Added: August 6, 2018

2011 journal article

Registration of 'N7003CN' Maturity-Group-VII Soybean with High Yield and Resistance to Race 2 (HG Type 1.2.5.7-) Soybean Cyst Nematode

JOURNAL OF PLANT REGISTRATIONS, 5(3), 309–317.

UN Sustainable Development Goal Categories
2. Zero Hunger (Web of Science)
13. Climate Action (Web of Science)
Source: Web Of Science
Added: August 6, 2018

2008 journal article

Crop Response to Rotation and Tillage in Peanut-Based Cropping Systems

AGRONOMY JOURNAL, 100(6), 1580–1586.

By: D. Jordan n, J. Barnes*, T. Corbett*, C. Bogle*, P. Johnson n, B. Shew n, S. Koenning n, W. Ye*, R. Brandenburg n

TL;DR: Comparisons of yield of corn, cotton, and peanut in different rotations planted in conventional and reduced tillage suggest that variation in response to rotation and tillage should be expected based on the crop and edaphic and environmental conditions. (via Semantic Scholar)
UN Sustainable Development Goal Categories
2. Zero Hunger (Web of Science; OpenAlex)
13. Climate Action (Web of Science)
15. Life on Land (Web of Science)
Source: Web Of Science
Added: August 6, 2018

2008 journal article

Rotation with corn and soybean for management of Meloidogyne incognita in cotton

Journal of Nematology, 40(4), 258–265.

By: S. Koenning & K. Edmisten

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

2007 article

First report of Phakopsora pachyrhizi on Kudzu (Pueraria montana var. lobata) in North Carolina and increased incidence of soybean rust on soybean in 2006.

Koenning, S. R., Frye, J. W., Butler, S. C., & Creswell, T. C. (2007, May). PLANT DISEASE, Vol. 91, pp. 637–637.

By: S. Koenning n, J. Frye n, S. Butler n & T. Creswell n

TL;DR: The diagnosis of P. pachyrhizi in kudzu was confirmed visually and by ELISA protocol supplied with the EnviroLogix QualiPlate kit (Portland, ME). (via Semantic Scholar)
UN Sustainable Development Goal Categories
2. Zero Hunger (Web of Science)
13. Climate Action (Web of Science)
Source: Web Of Science
Added: August 6, 2018

2007 article

First report of Phoma terrestris causing red root rot on sweet corn (Zea mays) in North Carolina.

Koenning, S. R., Frye, J. W., Pataky, J. K., Gibbs, M., & Cotton, D. (2007, August). PLANT DISEASE, Vol. 91, pp. 1054–1054.

By: S. Koenning n, J. Frye n, J. Pataky*, M. Gibbs* & D. Cotton

TL;DR: Foliar symptoms and discoloration of crowns of diseased sweet corn plants were similar to previously described symptoms of red root rot on field corn, however, roots of affected sweetcorn plants were not substantially rotted and did not have a symptomatic reddish pink or dark carmine color, presumably because sweet corn is harvested prior to the development of root symptoms. (via Semantic Scholar)
UN Sustainable Development Goal Categories
2. Zero Hunger (Web of Science)
Source: Web Of Science
Added: August 6, 2018

2007 journal article

Potential of an alkaline-stabilized biosolid to manage nematodes: Case studies on soybean cyst and root-knot nematodes

PLANT DISEASE, 92(1), 4–13.

By: I. Zasada*, F. Avendano*, Y. Li*, T. Logan, H. Melakeberhan*, S. Koenning n, G. Tylka*

UN Sustainable Development Goal Categories
2. Zero Hunger (Web of Science)
13. Climate Action (Web of Science)
Source: Web Of Science
Added: August 6, 2018

2007 journal article

Relative efficacy of selected nematicides for management of Rotylenchulus reniformis in cotton

Nematropica, 37(2), 227–235.

By: S. Koenning, D. Morrison & K. Edmisten

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

2007 journal article

The future of nematode management in cotton

Journal of Nematology, 39(4), 283–294.

By: J. Starr, S. Koenning, T. Eirkpatrick, A. Robinson, P. Roberts & R. Nichols

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

2006 journal article

Estimates of disease effects on soybean yields in the United States 2003 to 2005

Journal of Nematology, 38(2), 173–180.

By: J. Wrather & S. Koenning

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

2006 article

First report of soybean rust caused by Phakopsora pachyrhizi in North Carolina.

Koenning, S. R., Moore, A. D., Creswell, T. C., Abad, G. Z., Palm, M. E., McKemy, J. M., … DeVries-Paterson, R. (2006, July). PLANT DISEASE, Vol. 90, pp. 973–973.

By: S. Koenning n, A. Moore n, T. Creswell n, G. Abad n, M. Palm, J. McKemy, J. Hernandez*, L. Levy*, R. DeVries-Paterson*

TL;DR: Although soybean rust was eventually detected in 18 North Carolina counties in 2005, no soybean yield loss occurred since the pathogen was detected when more than 80% of the soybean crop was mature. (via Semantic Scholar)
UN Sustainable Development Goal Categories
2. Zero Hunger (Web of Science)
13. Climate Action (Web of Science)
15. Life on Land (OpenAlex)
Source: Web Of Science
Added: August 6, 2018

2006 article

Increased occurrence of target spot of soybean caused by Corynespora cassiicola in the southeastern United States.

Koenning, SR, Creswell, T. C., Dunphy, E. J., Sikora, E. J., & Mueller, J. D. (2006, July). PLANT DISEASE, Vol. 90, pp. 974–974.

TL;DR: The large increase in incidence of target spot in the southeast may be related to changes in weather patterns, changes in pathogen virulence, and/or the introduction of more susceptible host genotypes. (via Semantic Scholar)
UN Sustainable Development Goal Categories
2. Zero Hunger (Web of Science)
13. Climate Action (Web of Science)
Source: Web Of Science
Added: August 6, 2018

2006 journal article

Quantifying potential tolerance of selected cotton cultivars to Belonolaimus longicaudatus

Journal of Nematology, 38(2), 187–191.

By: S. Koenning, D. Bowman & R. Morris

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

2005 journal article

Cotton tolerance to Hoplolaimus columbus and impact on population densities

PLANT DISEASE, 89(6), 649–653.

By: . Koenning n & D. Bowman n

author keywords: Columbia lance nematode; fumigant nematicide
TL;DR: Glyphosate-tolerant transgenic-cotton cultivars were evaluated for tolerance to Hoplolaimus columbus in field experiments conducted from 2001 to 2003 and both groups of cultivars expressed significant levels of tolerance to H.columbus, but late-season cultivars tended to yield more than early- season cultivars in infested fields. (via Semantic Scholar)
UN Sustainable Development Goal Categories
2. Zero Hunger (Web of Science)
13. Climate Action (Web of Science)
Source: Web Of Science
Added: August 6, 2018

2004 journal article

Efficacy of selected nematicides for management of Hoplolaimus columbus in cotton.

Nematropica, 34(2), 211–218.

By: S. Koenning, D. Morrison, K. Edmisten & R. Taylor

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

2004 journal article

Influence of poultry litter applications on nematode communities in cotton agroecosystems

Journal of Nematology, 36(4), 524–533.

By: S. Koenning & K. Barker

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

2004 review

Plant-parasitic nematodes attacking cotton in the United States - Old and emerging production challenges

[Review of ]. PLANT DISEASE, 88(2), 100–113.

By: . Koenning n, T. Kirkpatrick, J. Starr*, J. Wrather*, N. Walker* & J. Mueller*

TL;DR: Reductions in pest pressure from weeds and insects as a result of the deployment of transgenic resistance and the boll weevil eradication program have greatly reduced the need for inputs of pesticides. (via Semantic Scholar)
UN Sustainable Development Goal Categories
2. Zero Hunger (Web of Science)
13. Climate Action (Web of Science)
Source: Web Of Science
Added: August 6, 2018

2004 chapter

Population biology

In R. D. Riggs & J. A. Wrather (Eds.), Biology and management of the soybean cyst nematode (2nd ed.) (pp. 73–88). Weinheim: Wiley-VCH.

By: S. Koenning

Ed(s): . R. D. Riggs & J. Wrather

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

2004 chapter

Population density based management

In R. D. Riggs & J. A. Wrather (Eds.), Biology and management of the soybean cyst nematode (2nd ed.) (pp. 89–110). Weinheim: Wiley-VCH.

By: D. Schmitt, S. Koenning & K. Barker

Ed(s): . R. D. Riggs & J. Wrather

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

2004 journal article

Resistance of soybean cultivars to field populations of Heterodera glycines in North Carolina

PLANT DISEASE, 88(9), 942–950.

By: . Koenning n

author keywords: damage function; host-plant resistance
TL;DR: The initial inoculum level was negatively correlated with soybean seed yield, but cysts 28 days after planting proved to be better at predicting seed yield than Pi and Hartwig and Delsoy 5710 generally yielded more than susceptible cultivars or cultivars derived from other sources of resistance. (via Semantic Scholar)
UN Sustainable Development Goal Categories
2. Zero Hunger (Web of Science)
13. Climate Action (Web of Science)
Source: Web Of Science
Added: August 6, 2018

2003 journal article

Effect of diseases on soybean yields in the United States and Ontario 1992-2002

Plant Health Progress, (2003 March 25).

By: J. Wrather*, S. Koenning n & T. Anderson

TL;DR: The objective of this project was to compile estimates of soybean yield losses due to diseases for each soybean producing state in the U.S. and Ontario from 1999 to 2002 to help funding agencies and scientists prioritize research objectives and budgets. (via Semantic Scholar)
UN Sustainable Development Goal Categories
11. Sustainable Cities and Communities (OpenAlex)
Source: NC State University Libraries
Added: August 6, 2018

2003 journal article

Effects of rate and time of application of poultry litter on Hoplolaimus columbus on cotton

PLANT DISEASE, 87(10), 1244–1249.

By: . Koenning, K. Edmisten*, K. Barker*, D. Bowman n & D. Morrison*

author keywords: Columbia lance nematode; Gossypium hirsutum; management; manure; organic amendments; population dynamics; sustainable agriculture
TL;DR: Poultry litter can be used effectively to supply nutrients to the crop and suppress damaging levels of H. columbus, but application of poultry litter at these rates, however, may exceed nutrient levels required for best management practices. (via Semantic Scholar)
UN Sustainable Development Goal Categories
2. Zero Hunger (Web of Science)
13. Climate Action (Web of Science)
Source: Web Of Science
Added: August 6, 2018

2003 journal article

Impact of cotton production systems on management of Hoplolaimus columbus

Journal of Nematology, 35(1), 73–77.

By: S. Koenning, K. Edmisten, K. Barker & D. Morrison

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

2003 journal article

Root-parasitic nematodes enhance soil microbial activities and nitrogen mineralization

MICROBIAL ECOLOGY, 46(1), 134–144.

By: C. Tu n, . Koenning n & S. Hu n

MeSH headings : Animals; Biomass; Carbon Dioxide / metabolism; Gossypium / physiology; Nematoda / metabolism; Nitrogen / metabolism; North Carolina; Plant Roots / parasitology; Soil / analysis; Soil Microbiology
TL;DR: It is indicated that nematode infection of plant roots may enhance microbial activities and the turnover of soil microbial biomass, facilitating soil N cycling. (via Semantic Scholar)
UN Sustainable Development Goal Categories
2. Zero Hunger (Web of Science)
13. Climate Action (Web of Science)
15. Life on Land (Web of Science)
Sources: Web Of Science, NC State University Libraries
Added: August 6, 2018

2003 journal article

Rotylenchulus reniformis management in cotton with crop rotation

Journal of Nematology, 35(1), 58–64.

By: R. Davis, S. Koenning, R. Kemerait, T. Cummings & W. Shurley

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

2002 journal article

Nematicides

By: S. Koenning*

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

2002 journal article

Tolerance to Hoplolaimus columbus in glyphosate-resistant, transgenic soybean cultivars

Journal of Nematology, 34(4), 370–373.

By: S. Koenning

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

2001 journal article

Other stem and root diseases

Compendium of Cotton Diseases (2nd Ed), 33.

By: R. Hillocks & S. Koenning

Ed(s): . T. L. Kirkpatrick & C. Rothrock

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

2001 journal article

Resistance as a tactic for management of Meloidogyne incognita on cotton in North Carolina

Journal of Nematology, 33(2-3), 126–131.

By: S. Koenning, K. Barker & D. Bowman

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

2001 journal article

Soybean disease loss estimates for the United States from 1996 to 1998

CANADIAN JOURNAL OF PLANT PATHOLOGY-REVUE CANADIENNE DE PHYTOPATHOLOGIE, 23(2), 122–131.

By: J. Wrather*, W. Stienstra* & . Koenning n

author keywords: phytophthora root and stem rot; brown stem rot; sclerotinia stem rot
TL;DR: Soybean disease loss estimates were compiled for the 1996 to 1998 harvested crops from all soybean-producing states in the United States based on field surveys, information from field workers and university extension staff, and research plot data. (via Semantic Scholar)
UN Sustainable Development Goal Categories
2. Zero Hunger (OpenAlex)
Source: Web Of Science
Added: August 6, 2018

2000 journal article

Density-dependent yield of Heterodera glycines-resistant and -susceptible cultivars

Journal of Nematology, 32(4), 502–507.

By: S. Koenning

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

2000 journal article

Stem canker of cotton caused by Phoma exigua in North Carolina

Plant Disease, 84(2000), 1251.

By: S. Koenning, F. Abdel Alim & L. Grand

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

2000 journal article

Tolerance of selected cotton lines to Rotylenchulus reniformis

Journal of Nematology, 32(4), 519–523.

By: S. Koenning, K. Barker & D. Bowman

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

1999 journal article

Survey of crop losses in response to phytoparasitic nematodes in the United States for 1994

Journal of Nematology, 31(4), 587–618.

By: S. Koenning, C. Overstreet, J. Noling, P. Donald, J. Becker & B. Fortnum

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

1998 chapter

Biology

In The cyst nematodes (pp. 156–190).

By: S. Koenning* & B. Sipes*

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

1998 review

Developing sustainable systems for nematode management

[Review of ]. ANNUAL REVIEW OF PHYTOPATHOLOGY, 36, 165–205.

By: K. Barker n & . Koenning n

author keywords: biological control; cropping systems; cultural practices; food webs; induced host resistance
TL;DR: The systems focusing on soil biology hold great promise for sustainable crop-nematode management, but only a few research programs are currently involved in this labor-intensive endeavor. (via Semantic Scholar)
UN Sustainable Development Goal Categories
2. Zero Hunger (Web of Science)
13. Climate Action (Web of Science)
Source: Web Of Science
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

Management of plant-parastic nematodes on peanut with selected nematicides in North Carolina

Journal of Nematology, 30(4 suppl.), 643–650.

By: S. Koenning, J. Bailey, D. Schmitt & K. Barker

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

1998 journal article

Survey of Heterodera glycines races and other plant-parastic nematodes on soybean in North Carolina

Journal of Nematology, 30(4, Suppl.), 569–576.

By: S. Koenning & K. Barker

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

1996 journal article

Impact of soil texture on the reproductive and damage potentials of Rotylenchulus reniformis and Meloidogyne incognita on cotton

Journal of Nematology, 28(4), 527.

By: S. Koenning, S. Walters & K. Barker

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

1996 journal article

Soybean maturity group and planting date effects on seed yield and population densities of Heterodera glycines

Fundamental and Applied Nematology, 19(2), 135.

By: S. Koenning, D. Schmitt & K. Barker

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

1995 journal article

IMPACT OF CROP-ROTATION AND TILLAGE SYSTEM ON HETERODERA-GLYCINES POPULATION-DENSITY AND SOYBEAN YIELD

PLANT DISEASE, 79(3), 282–286.

By: . Koenning, D. Schmitt, K. Barker & M. Gumpertz

author keywords: CONSERVATION TILLAGE; ECOLOGY
TL;DR: The long-term effects of no-till planting practices and rotation on the population dynamics of the soybean cyst nematode (Heterodera glycines) and soybean yield were investigated in field experiments over a period of 8 yr. (via Semantic Scholar)
UN Sustainable Development Goal Categories
2. Zero Hunger (Web of Science)
13. Climate Action (Web of Science)
Source: Web Of Science
Added: August 6, 2018

1995 journal article

Soybean photosynthesis and yield as influenced by Heterodera glycines, soil type and irrigation

Journal of Nematology, 27(1), 51.

By: S. Koenning & K. Barker

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

1993 journal article

EFFECTS OF CROPPING SYSTEMS ON POPULATION-DENSITY OF HETERODERA-GLYCINES AND SOYBEAN YIELD

PLANT DISEASE, 77(8), 780–786.

By: . Koenning, D. Schmitt & K. Barker

TL;DR: Planting date had variable effects on final population density of Heterodera glycines: early planting resulted in the highest nematode numbers in some years, whereas late planting was associated with significantly greater population densities in other years. (via Semantic Scholar)
UN Sustainable Development Goal Categories
2. Zero Hunger (Web of Science; OpenAlex)
13. Climate Action (Web of Science)
Source: Web Of Science
Added: August 6, 2018

1992 journal article

A novel technique for infesting field sites with encapsulated eggs of Meloidogyne spp

Journal of Nematology, 24(1), 183.

By: S. Koenning & K. Barker

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

1992 journal article

Field evaluation of selected soybean cultivars for resistance to two races of Meloidogyne arenaria

Journal of Nematology, 24(4), 735.

By: S. Koenning & K. Barker

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

1992 journal article

Relative damage function and reproductive potentials of Meloidogyne arenaria and M. hapla on peanut

Journal of Nematology, 24(1), 187.

By: S. Koenning & K. Barker

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

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