Source: NORTH CAROLINA STATE UNIV submitted to NRP
ENHANCING COST EFFECTIVE AND ENVIRONMENTALLY FRIENDLY PEST MANAGEMENT PROCEDURES FOR TURFGRASS AND PEANUT SYSTEMS.
Sponsoring Institution
National Institute of Food and Agriculture
Project Status
COMPLETE
Funding Source
HATCH
Reporting Frequency
Annual
Accession No.
0219080
Grant No.
(N/A)
Cumulative Award Amt.
(N/A)
Proposal No.
(N/A)
Multistate No.
(N/A)
Project Start Date
Oct 1, 2009
Project End Date
Sep 30, 2014
Grant Year
(N/A)
Program Code
[(N/A)]- (N/A)
Recipient Organization
NORTH CAROLINA STATE UNIV
(N/A)
RALEIGH,NC 27695
Performing Department
Entomology
Non Technical Summary
Turfgrass is a significant industry throughout the Southeast and contributes signficantly to the economy. The rapid growth of the industry and the current demand for high quality turf has created an increasing demand for cost effective nad environmentally friendly insect management strategies. In the past twenty years, pests such as fire ants, mole crickets, fall armyworms, white grubs, sugarcane beetles, and hunting billbugs have emreged as signficant pests while others such as sod webworms and chinch bugs are m a much less troublesome problem. These new pests have not been thoroughly studied in North Carolina and they have become serious pests. To ensure effective management, the biology and ecology of these pests must be well understood. The research described in this project all relates to developing a better understanding of these pests so cost effective management can be obtained. Additional research is investigating new control strategies for thrips in peanut to ensure contiued success in keeping tomato spotted wilt virsu in check. This disease is spread by thrips in the field. Additionally, new alternative approaches for southern corn rootworm are under investigation as traditional approaches are not always perfomring as well as expected.
Animal Health Component
(N/A)
Research Effort Categories
Basic
(N/A)
Applied
(N/A)
Developmental
(N/A)
Classification

Knowledge Area (KA)Subject of Investigation (SOI)Field of Science (FOS)Percent
2111830113015%
2112130113025%
2161830113010%
2162130113050%
Knowledge Area
211 - Insects, Mites, and Other Arthropods Affecting Plants; 216 - Integrated Pest Management Systems;

Subject Of Investigation
2130 - Turf; 1830 - Peanut;

Field Of Science
1130 - Entomology and acarology;
Goals / Objectives
Turfgrass has emerged as a major economic commodity in the past decade and its maintenance requires effective pest management programming. Societal pressures demand that these control strategies fit into the context of being environmentally friendly. The turfgrass sytem has evolved significantly over the past 20 years and new pests have emerged as major factors in maintaining high qulaity turfgrass. Preliminary studies have indicated that mole crickets modify their behavior when a control agent is applied to the soil surface. Continued research efforts using entomopathogenic fungal conidia and the commercially available insecticides bifenthrin and fipronil found that certain treatments resulted in modified mole cricket behavior. Further exploration of this modified behavior will take place in this project in the field and greenhouse using bifenthrin, fipronil, and an experimental product, chlorantraniliprole. Billbugs are well known insect pests of turf in many parts of the world. In the United States this has historically been true in areas where cool season turfgrass is grown. In regions that are dominated by warm season turfgrass the hunting billbug, S. venatus vestitus, has become an emerging pest. In the Southeast, hunting billbug adults are often observed, but our knowledge of their biology and ecology is limited and our ability to effectively manage them is poor. Recent work in Florida has revealed hunting billbug as the dominate species there and it has up to six overlapping generations per year. Based upon reports of billbug biology in cool season turfgrass regions, we assumed that hunting billbug may over winter in many stages, including larvae and adults and may have more than one generation per year in North Carolina but no concrete evidence has been provided. Since 2007 research investigating the biology and ecology of billbugs in North Carolina turfgrass systems has yielded results. Adult trapping has revealed four different billbug species in North Carolina, the most abundant of which is the hunting billbug accounting for 97% of all beetles collected in both warm and cool season grasses. We have found that the hunting billbug has two generations per year, with peaks in adult activity in spring and late summer, and overwinters as both larva and adult. The larvae overwinter in the soil beneath the host but the location of adult overwintering sites have not yet been determined. Preliminary management test suggest that Allectus can provide temporary reduction in the adult population when applied the first of September, but suppression of larval populations was inconclusive. Sugarcane beetles have quietly emerged as a pest of warm season turfgrass and very little is known about them outside of their agricultural crops habitat. This project will elucidate the life cyccle of this pest provindg for appropriate timing of control measures. The threat from tomato spotted wilt virus in peanut due to thrips transmission has been reduced through previous research on management but strategies to more cost effectively manage thrips are underway. Research to seek alternative strategies for rootworm management are also underway in peanut.
Project Methods
Experiments to quantify mole cricket behavior will be conducted in greenhouse experiments. Plastic tubs will contain native soil that has been treated with the three insecticides and allowed to "age" for 0, 30, 60, or 90 days after treatment. Mole crickets will be placed in large containers that have been treated at the intervals listed above. After 24 hours each tub will be assessed for damage and the location of the cricket will be noted. Similar "choice" experiments will be conducted in the field using 3 ft x 3 ft plots treated at the intervals above. Crickets will be placed in the center or the corner of the plot and their movement will be monitored with RFID tags. Finally, two bioassays will be conducted to determine efficacy of the insecticides using small and large nymphs. The soil will be treated at the intervals listed above with five replicates of each treatment. Each container will be checked day 1, 2, and 3 after initial cricket placement. Field season research will begin to evaluate a technique designed for implanting RFID tags into crickets, which were placed in treated plots and monitored with an RFID reader. Data will be collected on using RFID tagging for terrestrial insect behavioral research. As our understanding of mole cricket behavioral responses increase, we will design more elaborate studies to further elucidate the behaviors and impact on control. We will collect adult and larval specimens and track their population densities through the course of the season with the use of pitfall trapping and soil samples. The management trials will expanded to include numerous products applied during the spring and late summer. Lab testing to determine the LD 50 and LD 95 of these products on both larvae and adults will continue. We also hope to determine the turfgrass damaging life stage or stages by isolating larvae and adults alone in previously uninfested turf. This will provide valuable information as to which life stage to target in management strategies. In addition, we will investigate the potential for using pheromones already developed for other weevil species to attract billbugs. Finally, we have developed a novel way to track adult billbugs using RFID tags. Using this technology we will track their movement through the course of the season determining their range and ultimately overwintering sites. Continued refinement of techniques and research findings will allow the research to investigate overwintering, dispersal, turf species preference and other ecological components of billbug biology. Sugarcane beetle activity will be monitored using light traps for adults and sampling the turf root zone for larvae to determine life cycles and generation time. In addition, Studies will be conducted to determine whether the adult or larva are responsbile for damage to the turfgrass. Peanut research will focus exclusively on thrips management strategies with new prodcuts such as treated seed and developing new strategies for rootworm control. These will be focused primarily on field studies of alternative compounds.

Progress 10/01/12 to 09/30/13

Outputs
Target Audience: The target audiences include crop consultants, extension agents, farmers, agricultural dealers, turf managers, homeowners, other research and extension faculty, and students Changes/Problems: There will be more emphasis on cultural control strategies given the lack of new chemistry for insect pest control in limited acreage crops such as peanuts. What opportunities for training and professional development has the project provided? Lectures and seminars have been provided at numeorus state, regional and national conferences focusing on the pallication fo the data developed and its use by othe rscientists and end users. How have the results been disseminated to communities of interest? The results have been dissemtinated via multiple routes. 1. Printed media such as Peanut Information 2014 and 2014 Pest Cotnrol Recommendations for Turfgrass Managers through NC Ext. Serv. 2. Lectures, seminars, and conference 3. Internet via turffiles.ncsu.edu, Facebook "Turf, Bugs, and Rock n Roll, and Twitter, DrTurfBug What do you plan to do during the next reporting period to accomplish the goals? Focus more on new bilogical control stratgies to create more options for crop managers, provide cost effective and environmentally friendly insect control strategies. and address the increasing demand fo rnon chemical control strategies.

Impacts
What was accomplished under these goals? Cost effective thrips and tomoato spotted wilt virus strategies have been developed and refined to compensate for the loss of aldicarb. Studies to evaluate the role of IPM programming and adjustments in risk indices havbe been completed associated with the use of new cultivars. These data have resulted in adjustments to the peanut risk advisory and individual risk indicies available on line http://www.peanut.ncsu.edu/. Research focusing on environmentally friednly pest management for insect pests of turfgrass has resulted in refined pest control recommendations through numeorus ecological studies on pest biology to provide data fior more targeted pesticidie applucation and use. This infomraiton is avaialble through an on line data base www.turffiles.ncsu.edu that has over 10 millions hits per year.

Publications

  • Type: Journal Articles Status: Published Year Published: 2013 Citation: Abudulai, M, I. K. Dzomeku, D. Opare-Atakora, S. K. Nutsugah, A. B. Salifu, R. L. Brandenburg and D. L. Jordan . 2013. Survey of soil arthropod pests and assessment of yield loss in peanut in northern Ghana. Peanut Science. 39: 113-120. 105. Hertl, P. T. and R. L. Brandenburg. 2013. First record of Larra bicolor (Hymenoptera: Crabronidae) in North Carolina. Fla Entomol. 96:1175-1176.
  • Type: Journal Articles Status: Published Year Published: 2013 Citation: Hertl, P. T. and R. L. Brandenburg. 2013. First record of Larra bicolor (Hymenoptera: Crabronidae) in North Carolina. Fla Entomol. 96:1175-1176.
  • Type: Journal Articles Status: Awaiting Publication Year Published: 2014 Citation: J. N. L. Lamptey, F. Anno-Nyako, M. Owusu-Akyaw, M. B. Mochiah, G. Bolfrey-Arku, K. Osei. R. L. Brandenburg, and D. L. Jordan/ 2014. Incidence and Management of Peanut (Arachis Hypogaea L.) Rosette Disease in Southern Ghana. International Journal of Agriculture Innovations and Research Volume 2, Issue 4, ISSN (Online) 2319-1473
  • Type: Book Chapters Status: Published Year Published: 2013 Citation: Williamson, R. C., D. Held, R. L. Brandenburg, and F. Baxendale. 2013. Turfgrass Insect Pests. (In) Turfgrass: Biology, Use, and Management. p 809-890. ASA Monograph 56. 1307 p.
  • Type: Journal Articles Status: Published Year Published: 2013 Citation: Gurinderbir, S. Chahal, D. L. Jordan, A.C. York, R. L. Brandenburg, , B.S. Shew, J. D. Burton, and D. Danehower. 2013. Interactions of Clethodim and Sethoxydim with Other Pesticides. Peanut Science. 40:127-134.


Progress 10/01/11 to 09/30/12

Outputs
OUTPUTS: The overall goals and objectives are to produce cost effective and environmentally sound insect pest management programming for peanuts and turf. Research on hunting billbugs and sugar cane beetles in warm season turfgrass have resulted in several studies completed in the last year. These studies have focused on basic biology and ecology of these pests to provide a more complete understanding of the pests and their relationship to the host plant and environment they inhabit. Additional preliminary studies and surveys on novel techniques to manage ground pearls have been completed with promising results for management of this troublesome pest. Also completed is the development of a technique that helps elucidate the feeding behavior of insect pests feeding on turfgrass plants to help improve our understanding of pest feeding sites which may allow improved insecticide targeting and use. Efforts to find alternatives to the use of Temik (aldicarb) as an plant, in furrow insecticide for control of thrips and the management of tomato spotted wilt disease in peanuts. These studies have yielded promising results in spite of the lack of new insecticide product development. The refinement of pest risk indices in the context of the complete production and the interactions of combination insecticide use patterns and tank mixes are studies that have all been completed in the past year. PARTICIPANTS: Dr. Fred Yelverton, North Carolina State University collaborator Dr. Lane Tredway, North Carolina State University collaborator Dr. David Jordan North Carolina State University collaborator Dr. Barb Shew North Carolina State University collaborator Dr. Ames Herbert, Jr. Virgina Tech, collaborator Dr. Mike Owusu-Akyaw, Crops Research Institute, Kumasi, Ghana Dr.Mumuni Abudulai, Savanna Agricultural Institute, Tamale, Ghana TARGET AUDIENCES: The target audiences in turfgrass is large and diverse. They include golf curse superintendents, lawn care operators, sod producers, parks and recreational field managers, city and school ground managers, sports turf managers, and even homeowners. Through website presence, conferences and workshops and on line publications, the most recent and relevant research finding are made available to these audiences. Additionally professionals in other states are made aware of our research findings through conferences. In peanut the main target audience are the county agents in the peanut producing counties, but information is also made available to individual peanut growers. Research findings are also made available to colleagues at other universities through conference. PROJECT MODIFICATIONS: Nothing significant to report during this reporting period.

Impacts
The findings of the hunting billbug and sugar cane biology studies have helped us actually develop management strategies that have been disseminated to end users and utilized in turfgrass pest management systems. The use of steam injection has been shown to reduce ground pearl numbers in centipede grass and the winter seeding of seed hybrid bermudagrasses into the sites permits recovery of the area in the early spring. The ELISA technique using an animal protein on the plant tissues has provided valuable insight into how and where insects feed on various types of turfgrass. This enhances our understanding of how insecticides that are translocated in the plant might actually work and how we can modify their use to get better results. The use of seed treatments and novel chemistry applied in the furrow as a replacement for Temik (aldicarb), which is no longer labeled for peanuts,have produced two options that farmers find acceptable, cost effective, and with good efficacy. These new options are now available for farmers and the only remaining research is to evaluate them more fully for use in different production systems such as twin row, reduced tillage, and otehr option. The studies on tank mixes and pesticide interaction has produced a compatibility chart with recommendations for treatment options and combinations.

Publications

  • Silcox, D.E. and R.L. Brandenburg. 2012. Quantifying efficacy and avoidance behavior by tawny mole crickets (Orthoptera: Gryllotalpidae: Scapertiscus) to three synthetic insecticides. Fla Entomol. 95 (1): 63-74. Doskocil, J. P., C. E. Sorenson, R. N. Royalty, and R. L. Brandenburg. 2012. Evaluation of insecticides for letha dose, lethal concentration, and field activity on hunting billbug in warm-season turfgrass.. Online. Applied Turfgrass Science doi:10.1094/ATS-2012-0227- 01-RV. Doskocil, J. P. and R. L. Brandenburg. 2012. Determination of billbug (Coleoptera: Curculionidae) species composition, life cycle, and damaging life stage in North Carolina Turfgrass. J. Econ. Entomol. 105:2045-51. Gurinderbir, S. Chahal, D. L. Jordan, B.S. Shew, R. L. Brandenburg, A.C. York, J. D. Burton, and D. Danehower. 2012. Interactions of agrochemicals applied to peanut: part 1: Effects on herbicides. Crop Protection 41: 134-142. Gurinderbir, S. Chahal, D. L. Jordan, B.S. Shew, R. L. Brandenburg, J. D. Burton, D. Danehower, and A.C. York. 2012. Interactions of agrochemicals applied to peanut: part 2: Effects on fungicides. Crop Protection 41: 143-149. Gurinderbir, S. Chahal, D. L. Jordan, R. L. Brandenburg, B.S. Shew, R. L. Brandenburg, J. D. Burton, D. Danehower, and A.C. York. 2012. Interactions of agrochemicals applied to peanut: part 2: Effects on insecticides and prohaxadione calcium. Crop Protection 41: 150-157. Gurinderbir, S. Chahal, D. L. Jordan, R. L. Brandenburg, B.S. Shew, R. L. Brandenburg, J. D. Burton, D. Danehower, and A.C. York. 2012. Influence of selected fungicides on efficacy of clethodium and 2,4-DB. Peanut Sci. 39: (in press) Abudulai, M, I. K. Dzomeku, D. Opare-Atakora, S. K. Nutsugah, A. B. Salifu, R. L. Brandenburg and D. L. Jordan . 2012. Survey of soil arthropod pests and assessment of yield loss in peanut in northern Ghana. Peanut Science. 39: (in press).


Progress 10/01/10 to 09/30/11

Outputs
OUTPUTS: Data on hunting billbug and sugarcane beetle biology has been provided to turfgrass managers throughout the Southeastern United State through web-based materials, presentations and popular press articles. These new pests have created significant problems for turf managers of warm season turfgrass species. Insecticide evaluations are permitting the development of cost effective control recommendations. The evaluation of new formulations of insecticides is providing insight into approaches for more cost effective and environmentally-sound pest control strategies in turfgrass settings. The use of new techniques to better understand turfgrass insect pest ecology through enhanced knowledge of overwintering, movement, and feeding behavior. The use of RFID microchips for monitoring pest movement has increased our understanding of pest dispersal and overwintering while the use of genetic markers is providing insight into feeding behavior which helps target control strategies using modern control products The reliance upon old pesticide chemistry for peanut pest management continue to challenge our ability to provide cost effective pest management that is environmentally sound programming. recent research has established the value of limited cost cultural practices that can be used to reduce the likelihood of outbreaks. In addition, the loss of many pesticide standards in year years, including Temik in 2011, has created the need for rapid response to develop alternatives to these products. Options for Temik replacement have been evaluated and offered to growers and reasonable alternatives. The use of cultural practices has proven to be effective enough that they are now incorporated into standard production planning. These data have been integrated into a peanut production risk management data base for improved decision making, yields, and profits. The Peanut CRSP project in Ghana has completed several key research projects leading to improved crop production efficiency. PARTICIPANTS: Dr. David Jordan, Professor, Crop Science, NC State University Dr. Fred Yelverton, Professor, Crop Science, NC State University Dr. Lane Tredway. Assoc. Professor, Plant Pathology, NC State University Dr. Barb Shew, Assoc. Professor, Plant Pathology,NC State University Dr. Grady Miller, Profesor, Crop Science, NC State University Dr. Ames Herbert, Entomology, Professor, Virginia Tech Dr. Clyde Sorenson, Professor, Entomology, NC State University TARGET AUDIENCES: Peanut farmers, county field faculty, agrichemical dealers, seed companies Golf course superintendents, sod producers, athletic field managers, public grounds managers, lawn care operators, research and extension scientists and land-grant and private institutions, USDA personnel, state agencies. PROJECT MODIFICATIONS: Nothing significant to report during this reporting period.

Impacts
A peanut decision and risk management program is now available to all peanut producers, county agents, and allied industry personnel on line http://www.peanut.ncsu.edu/riskmgmt/. This tool incorporates recent research into a date base driven tool that helps growers make wise decisions, both prior to planting and during the growing season. Other decision making tools are refined each with with the additional data generated. These tools have resulted in a reduced number of acres treated in a preventive manner for southern corn rootworms, less incidence of tomato spotted wilt virus in peanuts, and a reduced incidence of secondary pests such as spider mites as a result of unnecessary pesticide use. Turfgrass managers now have access to multiple sites for pest forecast information based upon the research data generated. These sites include Facebook, Twitter, and Turffiles (www.turffiles.ncsu.edu) which has become the most widely accessed turf website for turfgrass insect pest management information. There are more than 13 millions "hits" per year on the Turffiles website. Numerous research publications are available to the research community to help promote enhanced knowledge of pest biology which is critical for effective pest control with the latest insecticide chemistry. The USAID funded peanut project in Ghana has undergone a complete socioeconomic evaluation in 2011 and the findings of that study should be available in 2012. Improved peanut cultivars developed within this project are scheduled for release in 2012.

Publications

  • Silcox, D.E. and R.L. Brandenburg. 2011. Gut content analysis of southern and tawny mole crickets (Orthoptera: Gryllotalpidae: Scapteriscus). Florida Entomologist 94 (1): 117-118. Silcox, D.E., J.P. Doskocil, C.E. Sorenson, and R.L. Brandenburg. 2011. Radio frequency Identification tagging: a novel approach to monitoring surface and subterranean insects. American Entomologist. 57:86-93. Kingsley, O., S. R. Gowen, B. Pembroke, R. L. Brandenburg, and D. L. Jordan. 2010. Potential of Leguminous Cover Crops in the Management of a Mixed Population of Root-knot Nematodes (Meloidogyne spp.). J of Nematology. 42:173-178. Jordan, D. L., S. H. Lancaster, J. E. Lanier, P.D. Johnson, J. B. Beam, A. C. York, and R. L. Brandenburg. 2011. Influence of Application Variables on Efficacy of Manganese-Containing Fertilizers Applied to Peanut (Arachis hypoggaea L.), Peanut Sci. (accepted). Abudulai, M, I. K. Dzomeku, D. Opare-Atakora, S. K. Nutsugah, A. B. Salifu, R. L. Brandenburg and D. L. Jordan. 2008. Survey of soil arthropod pests and assessment of yield loss in peanut in northern Ghana. Peanut Science. (accepted). Doskocil, J. P. and R.L. BrandenburgEvaluation ofInsecticides for Lethal Dose, Lethal Concentration, and Field Activity on Hunting Billbug in Warm-Season Turfgrass. Appl. Turfgrass Sci. (accepted) Silcox, D.E., L. Verburgt, A.S. Schoeman, and R. L. Brandenburg. 2011. Comparison of mole cricket (Orthoptera: Gryllotalpidae) mating calls: characteristics in recently expanded geographic areas. Florida Entomologist. Submitted.


Progress 10/01/09 to 09/30/10

Outputs
OUTPUTS:Peanut insect management has been improved through the development of enhanced decision making tools and information data bases made available to peanut growers, industry personnel, and extension field faculty. A joint, multi-disciplinary effort that combined weed science, entomology, plant pathology, agronomy, plant breeding, and soil sciences has completed a data base and decision tool that is available to the public on line. This data base incorporates past extension publications, control recommendations and algorithms for decision making regarding variety selection, planting date, tillage, insect control, weed control, and disease management. Users add inputs that are used by the decision tools to provide a level of risk associated with the inuts (or lack thereof). Growers can adjust production practices and pest management procedures to reduce risk and/or costs. This tool has gained wide acceptance by extension field faculty and is more slowly being accepted and utilized by peanut growers across the state. Furthermore, this tool has been enhanced for use in Virignia and South Carolina through collaborations with scientists in those state making it a regional output of even greater value and impact. Currently, we are in the process of adding an additional link that will supply weekly alerts or updates to users based upon field observations and crop and pest modeling tools. A similar on line tool has been available for turfgrass managers for more than five years and was recently enhanced with more decision making software and availability of alerts or updates and links for information. A pest management template has been completed and is now available for golf course superintendents that allows end users to make informed pest management decisions based on local research. This new tool takes into account both cost-effective and environmentally-friendly components. Also included are recommendations for pest management. PARTICIPANTS: Dr. David Jordan, peanut agronomist, NCSU Dr. Barb Shew, peanut plant pathologist, NCSU Dr. Gail Wilkerson, crop physiologist, NCSU Dr. Tom Isleig, peanut breeder, NCSU Dr. Ames Herbert, peanut entomologist, Va Tech Dr. Fred Yelverton, turf weed scientist, NCSU Dr. Lane Tredway, turf plant pathologist, NCSU Dr. Charles Peacock, turf agronomist, NCSU Dr. Grady Miller, turf agronomist, NCSU TARGET AUDIENCES: Peanuts - peanut farmers, allied industry personnel, and extension field faculty in North Carolina, South Carolina and Virginia. Turf - sod producers, golf course superintendents, lawn care operators, parks and recreational facility managers, sports turf managers, allied industry personnel in North Carolina, South Carolina, and Virginia PROJECT MODIFICATIONS: Nothing significant to report during this reporting period.

Impacts
All findings and results are now extended to end users through electronic media. The two website tools mentioned in 'outputs' are available on line to the public and contain the latest information from local and regioal research sources. The use of these findings provide information and education that contributes in a beneficial manner to end users in two primary means. First, these tools provide education and an informed decision is always the bet decision. That is the key focus of these websites and the ability to update them on a regular basis assures current information. They are also interactive among disciplines and this interacive nature provides the greatest benefit to end users. For example, agronomic and disease management practices in peanuts can impact the likelihood of insect and mite damage. These decision tools adjust for risk from insect and mite damage as disease and crop production inputs are placed in the system. Thus a grower can develop the most cost effective production scheme that technology allows since, in effect, that grower has the collective wisdom of all specialists at their finger tips. The same is true for the turf website decision tool. Traditional approaches such as seminars, classes, etc are still used, but they all point clientele toward use of the websites for more effective programming.

Publications

  • Williams, M., L. Smith, M. Rayburn, C. Ellison, A. Whitehead, Jr., D. Morrison, D.L. Jordan, B.B. Shew, and R.L. Brandenburg. 2008. Delivery of pertinent information to peanut growers and the associated industry by North Carolina Cooperative Extension Service agents. Proc. Am. Peanut Res. and Ed. Soc. 40:79.
  • Jordan, D., R. Brandenburg, B. Shew, S. Lancaster, and B. Lassiter. 2008. Pesticide interactions complicate implementation of Integrated Pest Management strategies in peanut (Arachis hypogaea L.) Pages 8-9, No. 20 in Abstr. 5th International Weed Control Congress, June 23-27, 2008, Vancouver, British Columbia, Canada.
  • Jordan, D., G. Bolfrey-Arku, I. Dzomeku, M. Owusu-Akyaw, M. Abudulai, D. Jordan, and R. Brandenburg. 2008. Distribution and management of weeds in peanut (Arachis hypogaea L.) in Ghana, West Africa. Page 7, No. 7 in Abstr. 5th International Weed Control Congress, June 23-27, 2008, Vancouver, British Columbia, Canada.
  • Carley, D. S., D. L. Jordan, R. L. Brandenburg, L. C. Dharmasri. 2010. Factors Influencing Response of Virginia Market Type Peanut (Arachis hypogaea) to Paraquat Under Weed-Free Conditions. J. Crop Management doi: 10.1094/CM-2010-0430-01-RS.
  • Jordan, D. L., L. Fisher, B. Shew, R. L. Brandenburg, and W. Ye. 2009. Comparison of Cropping Systems Including Corn, Peanut, and Tobacco in the North Carolina Coastal Plain. J. Crop Management doi: 10.1094/CM-2009-0612-01-RS:
  • Drake, W. L., D. L. Jordan, M. Schroeder-Moreno, P. D. Johnson, J. L. Heitman, Y. J. Cordoza, R. L. Brandenburg, B. B. Shew, T. Corbett, C. R. Bogle, W. Ye, and D. Hardy. 2010. Crop Response Following Tall Fescue and Agronomic Crops. Agronom. J. 102:1692-1699.
  • Chahal, G.B.S., D.L. Jordan, B.B. Shew, R.L. Brandenburg, J.D.Burton, D. Danehower, and P. Eure. 2010. Interactions of clethodim and 2,4-DB with relatively new fungicides used in peanut. Proc. South. Weed Sci. Soc. 63: (in press).
  • Kingsley, O., S. R. Gowen, B. Pembroke, R. L. Brandenburg, and D. L. Jordan. 2010. Potential of Leguminous Cover Crops in the Management of a Mixed Population of Root-knot Nematodes (Meloidogyne spp.). Peanut Science (submitted).
  • Lassiter, B., G. Wilkerson, D. Jordan, R. Brandenburg, B. Shew, A. Herbert, and P. Phipps. 2010. Development of a comprehensive website and decision support system for peanut pest management in the Virginia-Carolina region. Abstr. Am. Soc. Agron.,2010 Annual Meeting, Oct. 31 - Nov. 3, 2010, Long Beach, CA.
  • Jordan, D.L. and P.D. Johnson. 2010. Summary of peanut response to tillage in North Carolina from 1997-2009. Proc. Am. Peanut Res. and Ed. Soc. 42: (in press)
  • Ellison, C., D.L. Jordan, B.B. Shew, and R.L. Brandenburg. 2010. Peanut production and extension programs in Northampton county North Carolina. Proc. Am. Peanut Res. and Ed. Soc. 42: (in press)
  • Chahal, G., D.L. Jordan, J.D. Burton, B.B. Shew, R.L. Brandenburg, and D. Danehower. 2010. Summary of compatibility trials with agrichemicals applied to peanut. Proc. Am. Peanut Res. and Ed. Soc. 42: (in press)
  • Drake, W.L., D.L. Jordan, J.L. Heitman, M. Schroeder-Moreno, Y. Cardoza, R.L. Brandenburg, B.B. Shew, T. Corbett, C. Bogle, W. Ye, and D. Hardy. 2010. Influence of sod-based rotation on peanut yield and pest development. Proc. Am. Peanut Res.and Ed. Soc. 42: (in press)
  • Chahal, G., D. Jordan, B. Shew, R. Brandenburg, J. Burton, and D. Danehower. 2010. Efficacy of graminicides applied with chloroacetamide herbicides, pyraclostrobin, and 2,4-DB. Abstr. Weed Sci. Soc. Am. (in press)
  • Chahal, G., D. Jordan, J. Burton, D. Danehower, R. Brandenburg, B. Shew. 2010. Efficacy of glyphosate as Influenced by water quality and co-applied agrichemicals. Abstr. Weed Sci. Soc. Am. (in press)
  • Chahal, G.B.S., D.L. Jordan, B.B. Shew, R.L. Brandenburg, J.D. Burton, D. Danehower and P. Eure. 2010. Weed, disease and insect control in peanut as influenced by co-application of agrichemicals. Proc. South. Weed Sci. Soc. 63: (in press).
  • Chahal, G.S.H., D.L. Jordan, B.B. Shew, R.L. Brandenburg, J.D. Burton, and D. Danehower. 2009. Weed and disease control in peanut as influenced by co-application of agrichemicals. Proc. Am. Peanut Res. and Ed. Soc. 41:51.
  • Cochran, A., J.B. Coletrain, Jr., D.L. Jordan, B.B. Shew, and R.L. Brandenburg. 2009. Addressing grower needs through Cooperative Extension programs in Martin county, North Carolina. Proc. Am. Peanut Res. and Ed. Soc. 41:62-63.
  • Lassiter, B.R., D.L. Jordan, G. Wilkerson, R.L. Brandenburg, and B.B. Shew. 2009. Performance of runner market type peanut in North Carolina. Proc. Am. Peanut Res. and Ed. Soc. 41:84.
  • Brandenburg, R., D.L. Jordan, M. Owusu-Akyaw, and M. Abudalai. 2009. Developing and implementing IPM strategies for groundnut in Ghana. Page 11 in Abstr. 5th National Integrated Pest Management Symposium, March 24-26, 2009, Portland, OR.
  • Chahal, G., D.L. Jordan, J. Burton, S.B. Clewis, R.L. Brandenburg, and B.B. Shew. 2009. Weed Control in peanut with tank mixtures containing five components. Proc. Southern Weed Sci. Soc. 62:124.
  • Wilkerson, G.G., B.R. Lassiter, D.L. Jordan, B.B. Shew, and R.L. Brandenburg. 2008. Incorporating climate forecasts into a peanut risk management decision aid. Abstr. Climate Information for Managing Risks (CIMR). (in press)
  • Jordan, D. L., S. H. Lancaster, J. E. Lanier, P.D. Johnson, J. B. Beam, A. C. York, and R. L. Brandenburg. 2010. Influence of Application Variables on Efficacy of Manganese-Containing Fertilizers Applied to Peanut (Arachis hypoggaea L.), Peanut Sci. (accepted).
  • Jordan, D. L. P. Dewayne Johnson, Rick L. Brandenburg, and Joel Faircloth. 2010. Peanut (Arachis hypogaea L.) Response to Bradyrhizobia Inoculant Applied In-furrow with Agrichemicals. Peanut Science 37:32-38.
  • Tu, C. Y. Wang, W. Duan, P. T. Hertl,L. Tredway, R. L. Brandenburg, D. Lee, M. Snell, and S. Hu. 2010. Effects of Fungicides and Insecticides on Feeding Behavior and Community Dynamics of Earthworms: Implications for Casting Control in Turfgrass Systems. Applied Soil Ecol 47: 31-36.
  • Drake, W. L., D. L. Jordan, R. L. Brandenburg, B. R. Lassister, and P. D. Johnson. 2009. Peanut Cultivar Response to Damage from Tobacco Thrips and Paraquat Under Weed-Free Conditions. Agronom. J. 101:1388-1393.