CAMPUS ADDRESS: Barton Laboratory/264 Roberts Hall

PHONE: 315.787.2355
607.255.4677

E-MAIL: jpn2@cornell.edu

Mathcad for crop protection decision making

EDUCATION
1982 Ph.D. Michigan State University
1979, 1982 M.S. Michigan State University
1977 B.A./B.S. University of Maine

ACADEMIC RANKS
Professor: 1999
Associate Professor: 1992
Assistant Professor: 1985

PRIMARY DEPARTMENTAL PROGRAM AREA
Population ecology of arthropods in horticultural crops. Research program consists of three programmatic thrusts; biological control, pest control decision making, and quantitative population ecology.

AREAS OF EXPERTISE
Integrated pest management, biological control, sampling and decision making, risk assessment, quantitative population ecology

PROFESSIONAL EXPERIENCE
1977-80 Research Assistant, Department of Entomology, Michigan State University, East Lansing, MI

1978-80 Forest Insect Specialist, Michigan DNR, Forest Management Division, East Lansing, MI

1981-82 Research Assistant, Department of Entomology, Michigan State University, East Lansing, MI

1982-85 Extension Associate, IPM Program, Cornell University, Geneva, NY

1985-1992 Assistant Professor, Department of Entomology, New York State Agricultural Experiment Station, Cornell University, Geneva, NY

1992-1999 Associate Professor, Department of Entomology, New York State Agricultural Experiment Station, Cornell University, Geneva, NY

1999-Current Professor, Department of Entomology, New York State Agricultural Experiment Station, Cornell University, Geneva, NY

2004-Current Chair, Department of Entomology, Cornell University, Ithaca, NY

SABBATICALS AND STUDY LEAVES
1994 Developing methods for monitoring pest populations through time; Department of Theoretical Production Ecology, Wageningen Agricultural University, Wegeningen, the Netherlands

HONORS AND AWARDS
1999 Excellence in IPM Award — presented by NY IPM Program

1994 Research Fellowship, Wageningen Agricultural University, Wageningen, the Netherlands

1982 Entomological Society of America John Henry Comstock Award for graduate studies

1982 Dr. Robert R. Dreisbach Award, Department of Entomology, Michigan State University

1980 Dr. Paul Wooley Award, Department of Entomology, Michigan State University

1976 Dr. Robert Ashman Award, School of Forestry, University of Maine

ADMINISTRATIVE RESPONSIBILITIES
Senior Associate Dean, College of Agriculture and Life Sciences

RESEARCH RESPONSIBILITIES
Research Professionals Supervised: Karen Wentworth, Carol Herring
Recent Research Accomplishments (all are in collaboration with other researches):

• Discovered that leaf trichomes promote phytoseiid mite abundance primarily through the behavioral response of the mites; factors that likely drive the evolution of this behavior are reduced risk of predation and increased capture of alternate foods.
• Determined that carbon balance in apple trees integrates the affects of multiple stresses.
• Determined that mite injury to grapes can result in reduced quality; however, high mite numbers are needed.  Also showed that pest mites can be managed using biological control.
• Evaluated reduced risk management tactics for apple insect pests and determined that key pests can be controlled with these tools.
• Developed methods for assessing the quality of mass-produced biological control agents.
• Developed novel tools for managing onion maggot including risk assessment, planting date manipulation and insecticidal baits.

TEACHING AND ADVISING RESPONSIBILITIES
ENT 277 Natural Enemies and Invasive Species – taught yearly with Dr. Ann Hajek

EXTENSION RESPONSIBILITIES
Fruit Program work team member
6.5% Formal appointment in Extension
2% Estimation of time spent in outreach activities

GRADUATE FIELD MEMBERSHIPS
Entomology
Plant protection (MPS)

GRADUATE MAJORS

GRADUATE MINORS

PROFESSIONAL SOCIETIES
Entomological Society of America
Phi Kappa Phi

EDITORIAL BOARDS
2002-2003 Subject editor, Environmental Entomology
1996-2001 Associate editor, Entomologia Experimentalis et Applicata
1994-1996 Subject editor, Experimental and Applied Acorology
1990-1991 Subject editor, Journal of Economic Entomology

COMMITTEE ASSIGNMENTS
International/National:
2002 Member and chair, Journal of Economic Entomology Editorial Review Board
2001 President, Entomological Society of America, Northeast Branch
2000 Program co-chair, Entomological Society of America, Northeast Branch
2001 Panel Manager, USDA NRI Biobased pest management grants review panel
2000 USDA NRI Biobased pest management grants review panel
1999 USDA NRI Biobased pest management grants review panel

University:
University Appeals Panel
Committee on Financial Policies

College:
2002-2004 NYSAES Computer Committee, chair
2003 NYSAES adhoc committee for webpage development, chair
2003-2004 CALS Strategic Communication ad hoc Committee
2003-2004 CALS Agricultural Science Curriculum Commitee

Department:
2001-2003 Department of Entomology Graduate Admissions Committee

RECENT INVITED PRESENTATIONS
Department of Entomology, University of Maryland “Mites, management and morphology-tritrophic interactions in mite biological control systems”, February 2002

Annual meeting of the Korean Entomological Society – Plenary speaker “The influence of plant morphology on mite biological control systems”, May 2002

Workshop for Association of Natural Bio-Control Producers, Los Angeles, CA. “Strategies for quality assessment of mass produced biological control agents”, October 2002

Department of Entomology, University of Massachusetts “Tritrophic interactions in mite biological control systems”, February 2003

Department of Plant Pathology, Cornell University, NYSAES “Quantifying risk in crop protection decision making”, April, 2003

Workshop for Association of Natural Bio-Control Producers, Niagara, Canada. “Estimating bias in a quality control assessment procedure”, October 2003

Annual Natural Bio-Control Producers Meeting, Guadalajara, Mexico.  “Quantitative quality assessment of mass-produced natural enemies: Concepts, accomplishments and needs”, October 2005

Annual Entomological Society of America Meeting, Fort Lauderdale, Florida.  “Quality conrol decision making for natural enemies”, December, 2005

RESEARCH PANELS
1999-01 National Research Council Committee on the Scientific Basis for Predicting the Invasive Potential of Non-Indigenous Pests of Plants in the U.S. Panel charged with evaluating the predictability of invasiveness by exotic organisms.

CONSULTING
1995 One week consultancy in Brazil on mite biological control and sampling in apples

1995 One week consultancy (Florida and California Avocado Commissions) on quantitative assessment of the risk of introducing exotic pests by importing Mexican Avocados

The goal of my research is to develop the tools required for biologically-based management of arthropods in horticultural crops.  I work towards this goal along three programmatic thrusts; biological control, pest control decision making, and quantitative population ecology.  My biological control research focuses on improving the effectiveness of natural enemies in selected cropping systems.  This is exemplified through my research on mite predator-prey interactions in apple and grape.  In this work I have asked what characterizes a successful mite biological control agent, how crop management practices can be modified to encourage mite biological control, and how tri-trophic interactions mediate biological control.  Pest control decision making is one of the foundations of pest management and this research addresses tools for measuring pest abundance, understanding pest impact on crops, and risk assessment for non-indigenous species.  Currently I am working collaboratively to determine whether leaf feeding by arthropods on perennial fruit crops has additive effects.  My work in quantitative ecology is currently focused on determining the relative contributions of host plant quality and natural enemies to the dynamics of leafrollers that infest apple orchards.  In addition to my research I also have a strong commitment to teaching.  I currently teach, in collaboration with Ann Hajek,  a course entitle “Natural Enemies and Invasive Species” which is geared towards non-majors.

Refereed journal articles
Sarvary, M. A., Nyrop, J. P., Reissig, H. and K. M. Gifford.  2007. Potential for conservation biological control of the obliquebanded leafroller (OBLR) Choristoneura rosaceana (Harris) in orchard systems managed with reduced-risk insecticides.  Biological Control. 40:37-47.

Luczynski, A., Nyrop, J.P. and A. Sh.  2007.i Influence of cold storage on pupal development and mortality during storage and on post-storage performance of Encarsia formosa and Eretmocerus eremicus (Hymenoptera: Aphelinidae)  Biological Control. 40:107-117

Musser F. R., Nyrop J. P. and Shelton A. M. 2006 Integrating biological and chemical controls in decision making: European Corn Borer (Lepidoptera: Crambidae) control in sweet corn as an example. J. Econom. Entomol. 99:1538–1549.

Nault, B. A., Zhao, J. Z., Straub, R. W., Nyrop, J.P., and Hessney, M. L.  2006. Onion maggot (Diptera Anthomyiidae) resistance to chlorpyrifos in New York onion fields. J Econ Entomol. 99:1375-1380.

Nyrop, J. P. and Lakso, A. N.  2006. Modeling from a crop protection decision support perspective what is most important? Acta Hort. 707:187-195.
Renkema, J. M., Nyrop, J. P., Difonzo, C.,  Sears, M. K. and Schaafsma, A. W. 2006. Control decision rule for European chafer (Coleoptera Scarabaeidae) larvae in field corn.  J. Econ. Entomol. 99:76-84.

Werling, B. P., J. P. Nyrop and B. Nault.  2006.  Spatial and temporal patterns of onion adult activity and oviposition within onion fields that vary in bordering habitat. Entomol. Exp. Applicat. 118: 49–59.

Musser, F. R, B. A. Nault, J. P. Nyrop and A. M. Shelton.  2005.  Impact of glossy collard trap crop on diamondback moth adult movement, oviposition and larval survival.  Entomol. Exp. Applicat. 117:71-81.

Musser, F. R., J. P. Nyrop and A. M. Shelton. 2004. Survey of predators and sampling method comparison in sweet corn. J. Econ. Entomol. 97:136-144.
Roda, A., J. Nyrop and G. English-Loeb.  2003. Leaf pubescence mediates the abundance of non-prey food and the density of the predatory mite Typhlodromus pyri..  Exp. Appl. Acarol.  29:193-211.

Agnello, A. M., W. H. Reissig, J. Kovach, and J. P. Nyrop.  2003. Integrated apple pest management in New York with predator mite establishment and a selective pesticide programme.  Agric., Ecosyst., Environ. 94: 183-195.

Waldstein, D. E., W. H. Reissig and J. P. Nyrop. 2001. Larval movement and its potential impact on the management of the obliquebanded leafroller (Lepidoptera: Tortricidae). The Canadian Entomologist. 133: 687-696.

Roda, A., J. Nyrop, G. English-Loeb and M. Dicke. 2001. Leaf pubescence and two-spotted spider mite webbing influence phytoseiid behavior and population density. Oecologia. 129:551-560

Roda, A., J. Nyrop, M. Dicke and G. English-Loeb. 2000. Trichomes and spider-mite webbing protect predatory mite eggs from intraguild predation. Oecologia. 125:428-435.

Dalthorp, D. J. P. Nyrop, and M. J. Villani. 2000. Spatial ecology of the Japaneese beetle , Popillia japonica. Entomol. Exp. et Applicata. 96:129-139

Dalthorp, D. J. P. Nyrop, and M. J. Villani. 2000. Foundations of spatial ecology: The reification of patches through quantitative description of patterns and pattern repetition. Entomol. Exp. et Applicata. 96:119-127.

Chang, Y., M. J. Tauber, C. A. Tauber and J. P. Nyrop. 2000. Interpopulation variation in Chrysoperla carnea reproduction: implications for mass-rearing and storage. Entomol. Exp. et Applicata. 95:293-302.

Hardman, J. M., W. van der Werf and J. P. Nyrop. 1999. Modelling mite dynamics on apple trees in eastern North America. Proc. 5^th Int. Symp. on Comp. Mod., Acta Hort 499:201-209.

Portillo-Aguilar, C., M. G. Villani, M. J. Tauber, C. A. Tauber and J. P. Nyrop 1999. Entomopathogenic nematode (Rhabditida: Heterorhabditidae and Steinernematidae) response to soil texture and bulk density. Environ. Entomol. 28: 1021-1035.

Nyrop, J. P., M. R. Binns and W. van der Werf. 1999. Sampling for IPM decision making: Where should we invest time and resources? Phytopathology 89:1104-1111.

Dalthorp, D. J. P. Nyrop, and M. J. Villani. 1999. Estimation of local mean population densities of Japanese beetle grubs (Scarabeiidae: Coleoptera). Environ. Entomol. 28:255-265.

Gray, G. M., J. C. Allen, D. E. Burmaster, S. H. Gage, J. K. Hammitt, S. Kaplan, R. L. Keeney, J. G. Morse, D. W. North, J. P. Nyrop, A. Stahevitch and R. Williams. 1998. Principles for conduct of pest risk analysis: report of an expert workshop. Risk Analysis. 18:773-780.

Reissig, W. H., J. P. Nyrop and R. Straub 1998. Oviposition model for timing insecticide sprays against plum curculio. Environ. Entomol. 27:1053-1061.

Tauber, M. J., C. A. Tauber, J. P. Nyrop, and M. G. Villani. 1998. Moisture, a vital but neglected factor in the seasonal ecology of insects: hypotheses and tests of mechanisms. Environ. Entomol. 27:523-530.

Lawson, D. S., J. P. Nyrop and W. H. Reissig. 1997. Assays with commercially produced Trichogramma species (Hymenoptera: Trichogrammatidiae) to determine suitability for Obliquebanded leafroller (Lepidoptera: Tortricidae) control. Env. Entomol. 26:684-693.

van der Werf, W., J. P. Nyrop, and M. R. Binns. 1997. Adaptive frequency classification: a new methodology for pest monitoring and its application to European red mite (Panonychus ulmi, Acari: Tetranychidae). Exp. Appl. Acarol. 21:431-462

Binns, M. R., J. P. Nyrop and W. van der Werf. 1996. Monitoring pest abundance by cascading density classification. American Entomologist. 42:113-121.

Francesconi, A. H. D., A. N. Lakso, J. P. Nyrop, J. Barnard and S. S. Denning. 1996. Carbon balance as a physiological basis for the interactions of European red mite and crop load on ‘Starkrimson Red Delicious’ apple trees. J. Amer. Soc. Hort. Sci. 121:959-966.

Francesconi, A. H. D, C. B. Watkins, A. N. Lakso, J. P. Nyrop, J. Barnard and S. S. Denning. 1996. Interactions of European red mite and crop load on maturity and quality, mineral concentrations, and economic value of ‘Starkrimson Delicious’ apples. J. Amer. Soc. Hort. Sci. 121:967-972.

Hoffman, M. P., J. P. Nyrop, J. J. Kirkwyland, D. M. Riggs, D. O. Gilrein and D. D. Moyer. 1996. Development and validation of a sequential sampling plan for lepidopterous pests of fresh market sweet corn in New York. J. Econ. Entomol. 89:386-395.

Lakso, A. N., G. B. Mattii, J. P. Nyrop and S. S. Denning. 1996. Influence of European red mite on leaf and whole-canopy carbon dioxide exchange, yield, fruit size, quality, and return cropping in ‘Starkrimson Delicious’ apple trees. J. Amer. Soc. Hort. Sci. 121:954-958.

Lawson, D. S., J. P. Nyrop and T. J. Dennehy. 1996. Aerial dispersal of European red mites (Acari: Tetranychidae) in commercial apple orchards. Exp. Appl. Acarol. 20:193-202.

Schmaedick, M. A. and J. P. Nyrop. 1995. A method for sampling arthropod pests with uncertain phenology with application to spotted tentiform leafminer Phyllonorycter blancardella (Lepidoptera: Gracillariidae). J. Econ. Entomol. 88:875-889.

Nyrop, J. P., M. J. Villani and J. A. Grant. 1995. A control decision rule for European chafer (Coleoptera: Scarabaeidae) larvae infesting turfgrass. Environ. Entomol. 24:521-528.

Agnello, A. M., J. Kovach, J. P. Nyrop, W. H. Reissig, D. I. Breth, and W. F. Wilcox. 1994. Extension and evaluation of a simplified monitoring program in New York apples. Amer. Entomol. 40:37-49.

Tauber, M. J., C. A. Tauber and J. P. Nyrop. 1994. Soil moisture and post-dormancy emergence of Colorado potato beetles (Coleoptera: Chrysomelidae): A descriptive model and field emergence patterns. Environ. Entomol. 23:1485-1496.

van der Werf, W., J. P. Nyrop and J. M. Hardman. 1994. Sampling predator/prey ratios to predict cumulative pest density in the mite - predator mite system Panonychus ulmi - Typhlodromus pyri. Aspects Applied Biology 37:41-52.

Nyrop, J. P. , M. R. Binns, W. van der Werf, and J. Kovach. 1994. Cascading tripartite binomial classification plans to monitor European red mite (Acari, Tetranychidae) through a season; Development and evaluation of a new methodology for pest monitoring. Exp. Appl. Acarol. 18:123-153.

Nyrop, J. P., J. Minns and C. Herring. 1994. Influence of ground cover on dynamics of Amblyseius fallacis Garman (Acarina: Phytoseiidae) in New York apple orchards. Agric. Ecosys. Environ. 50:61-72.

Nyrop, J. P. and W. van der Werf. 1994. Tripartite classification and adaptive frequency classification sampling plans for monitoring population density through time. Aspects Applied Biology. 37:53-62.

Lawson, D. S., W. H. Reissig, J. P. Nyrop and S. K. Brown. 1994. Management of arthropods on columnar trees using exclusionary cages. Crop Protection. 13:346-356.

Lawson, D. S., S. K. Brown, J. P. Nyrop, and W. H. Reissig. 1994. Micro climate and columnar apple tree performance within insect exclusionary cages. HortScience 29(9) : 1008-1015.

Schroeder, P. C., M. G. Villani, C. S. Fergusun, J. P. Nyrop, and E. J. Shields. 1993. Behavioral interactions between Japanese Beetle (Coleoptera: Scarabaeidae) grubs and an entomopathogenic nematode (Nematoda: Heterorhabditidae) within turf microcosms. Environ. Entomol. 22:595-600.

Walde, S. J., J. P. Nyrop, and J. M. Hardman. 1992. Dynamics of Panonychus ulmi and Typhlodromus pyri: Factors contributing to persistence. Exp. Appl. Acarol. 14:261-291.

Hoffman, C. J. , T. J. Dennehy, and J. P. Nyrop. 1992. Phenology, monitoring, and control decision components of the grape berry moth (Lepidoptera : Tortricidae) risk assessment program in New York. J. Econ. Entomol, 85(6) 2218-2227.

Nyrop, J. P and M. R. Binns. 1992. Algorithms for computing operating characteristic and average sample number functions for sequential sampling plans based on binomial count models. J. Econ. Entomol. 85:1253-1273.

Kruger, S. R., M. G. Villani, J. P. Nyrop, and D. W. Roberts. 1992. Effect of soil environment on the efficacy of fungal pathogens against scarab grubs in laboratory assays. Biol. Control. 1:203-209.

Binns, M. R. and J. P. Nyrop 1992. Sampling insect populations for the purpose of IPM decision making. Ann. Rev. Entomol. 37:427-453.

Villani, M. G. and J. P. Nyrop. 1991. Age-dependent movement patterns of Japanese beetle and European chafer (Coleoptera: Scarabeidae) grubs in soil-turfgrass microcosms. Environ. Entomol. 20: 241-251.

Zhang, Z.-Q., J. P. Sanderson, and J. P. Nyrop. 1991. Foraging time and spatial patterns of predation in experimental populations: A comparative study of three mite predator-prey systems (Acari: Phytoseiidae, Tetranychidae). Oceologia 90: 185-196.

Martinson, T. E., J. P. Nyrop, T. J. Dennehy, and W. H. Reissig. 1991. Field measurement of selection for Twospotted spider mite (Acari: Tetranychidae) resistance to dicofol in apple orchards. J. Econ. Entomol. 84: 7-16.

Martinson, T. E., J. P. Nyrop, T. J. Dennehy, and W. H. Reissig. 1991. Field measurement of selection for European red mite (Acari: Tetranychidae) resistance to dicofol in apple orchards. J. Econ. Entomol. 84: 1-6.

Martinson, T. E., J. P. Nyrop, T. J. Dennehy, and W. H. Reissig. 1991. Temporal variability in repeated bioassays of field populations of European red mite (Acari: Tetranychidae): Implications for resistance monitoring. J. Econ. Entomol. 84:1119-1127.

Hardman, J. M., R. E. L. Rogers, J. P. Nyrop, and T. L. Frisch. 1991. Effect of pesticide applications on abundance of European red mite (Acari: Tetranychidae) and Typhlodromus pyri (Acari: Phytoseiidae) in Nova Scotian apple orchards. J. Econ. Entomol. 84:570-580.

Seaman, A. J., J. P. Nyrop, and T. J. Dennehy. 1990. Ecology and impact of egg and larval parasitoids of the grape berry moth (Lepidoptera: Tortricidae) in New York. Environ. Entomol. 19: 764-770.

Trumble, J. T., M. J. Brewer, A. M Shelton, and J. P. Nyrop. 1990. Transportability of fixed-precision level sampling plans. Res. Popul. Ecol. 31: 325-342.

Nyrop, J. P., W. H. Reissig, A. M. Agnello, and J. Kovach. 1990. Development and evaluation of a control decision rule for first generation spotted tentiform leafminer Phyllonorycter blancardella (Lepidoptera: Gracillariidae) in New York apple orchards. Environ. Entomol. 19: 1624-1638.

Nyrop J. P., A. M. Agnello, J. Kovach, and W. H. Reissig. 1989. Binomial sequential classification sampling plans for European red Mite (Acari: Tetranychidae) with special reference to their performance criteria. J. Econ. Entomol. 82: 482-490.

Nyrop, J. P., A. M. Shelton, and J. Theunissen. 1989. Value of a control decision rule for leek moth infestations in leek. Entomologia exp. et appl. 53: 167-176.

Huber, B., J. P. Nyrop, W. Wolf, H. Reissig, A. Agnello, and J. Kovach. 1989. EASY-MACS; a knowledge based system for use in apple integrated pest management. Comp. and Electr. in Agriculture. 4: 293-304.

Martinson, T. E., J. P. Nyrop, and C. J. Eckenrode. 1989. Long range host finding behavior and colonization of onion fields by Delia antiqua (Diptera : Anthomyiidae). J. Econ. Entomol. 82: 1111-1120.

Martinson, T. E., J. P. Nyrop, and C. J. Eckenrode. 1988. Dispersal of the onion fly (Diptera: Anthomyiidae) and larval damage in rotated onion fields. J. Econ. Entomol. 81: 508-514.

Nyrop, J. P. 1988. Sequential classification of prey-predator ratios with application to European red mite (Acarina: Tetranychidae) and Typhlodromus pyri (Acarina: Phytoseiidae) in New York apple orchards. J. Econ. Entomol. 81: 14-21.

Nyrop, J. P. 1988. Spatial dynamics of an acarine predator - prey system: Typhlodromus pyri (Acari: Phytoseiidae) preying on Panonychus ulmi (Acari: Tetranychidae). Environ. Entomol. 17: 1019-1031.

Shelton, A. M., J. P. Nyrop, R. C. North, C. Petzoldt, and R. E. Foster. 1987. Development and use of a dynamic sequential sampling program for onion thrips Thrips tabaci (Thysanoptera: Thripidae) on onions. J. Econ. Entomol. 80: 1051-1056.

Dennehy, T. J., J. P. Nyrop, W. H. Reissig, and R. W. Weires, Jr. 1988. Characterization of resistance to dicofol in spider mites from New York apple orchards. J. Econ. Entomol. 81: 1551-1561.

Nyrop, J. P., J. T. Olsen, D. G. Mosher, and G. A. Simmons. 1983. Simulation of the effect of jack pine budworm on economic returns from jack pine timber production in Michigan. Great Lakes Entomol: 16: 157-165.

Nyrop, J. P., and G. A. Simmons. 1984. Errors incurred when using Iwao's sequential decision rule in insect sampling. Environ. Entomol. 13: 1459-1465.

Nyrop, J. P. and R. J. Wright. 1985. The use of double sample plans in insect sampling with reference to the Colorado potato beetle Leptinotarsa decemlineata (Say). Environ. Entomol. 14: 644-649.

Eckenrode, C. J. and J. P. Nyrop. 1986. Impact of physical injury and commercial lifting on damage to onion bulbs by larvae of onion maggot (Diptera: Anthomyiidae) J. Econ. Entomol. 79:1606-1608.

Foster, R. E., J. J. Tollefson, J. P. Nyrop, and G. L. Hein. 1986. The value of adult corn rootworm population estimates in pest management decision making. J. Econ. Entomol. 79: 303-310.

Nyrop, J. P. and G. A. Simmons. 1986. The temporal and spatial dynamics of an adult parasitoid Glypta fumiferana (Vierick) and their influence on parasitism. Environ. Entomol. 15: 481-487.

Nyrop, J. P., R. E. Foster, and D. W. Onstad. 1986. The value of sample information in pest control decision making. J. Econ. Entomol. 79: 1421-1429.

Shelton, A. M., J. P. Nyrop, A. Seaman, and R. E. Foster. 1986. The distribution of European corn borer (Ostrinia nubilalis (Hubner)) egg masses and larvae on sweet corn in New York. Environ. Entomol. 15: 501-506.

Kemp, W. P., J. P. Nyrop, and G. A. Simmons. 1980. Simulation of the effects of stand factors on spruce budworm larval redistribution. Great Lakes Entomol. 13:81-91.

Technical articles and books
Board on Agriculture and Natural Resources. 2002. Predicting invasions of nonindigenous plants and plant pests. Committee on the Scientific Basis for Predicting the Invasive Potential of Nonindigenous Plants and Plant Pests in the United States, Board on Agriculture and Natural Resources, National Research Council.

Binns, M., J. P. Nyrop, and W. van der Werf. 2000. Sampling and Monitoring for Crop Protection Decision Making. CAB International, London.

Nyrop, J. P., G. English-Loeb and A. Roda. 1997. Conservation biological control of spider mites in perennial cropping systems. In Perspectives on the Conservation of Natural Enemies of Pests. P. Barbosa [ed]. Academic Press, New York.

Nyrop, J. P. 1995. A critique of the risk managment analysis for importation of avocados from Mexico. in Risks of Exotic Pest Introductions from Importation of Fresh Mexican Haas Avocados into the United States. Morse, J. G., R. L. Metcalf, M. L. Arpaia and R. E. Rice [eds]. Universitity of California, Riverside.

Nyrop, J. P. and W. van der Werf. 1993. Sampling to predict or monitor biological control. in: L. Pedigo and G. D. Buntin eds. Handbook of Sampling Methods for Arthopod Pests in Agriculture. CRC Press, Boca Raton. pp 207-336.

McInnis, P. J., J. P. Nyrop, and W. A. Wolf. 1992. Programming environment needs for pest management decision support systems. Proc. 4th Inter. Confer. on Computers in Agric., Lake Buena Vista, FL.

Villani, M. G., S. R. Kreuger, and J. P. Nyrop. 1992. A case study of the impact of the soil environment on insect/pathogen interactions: Scarabs in turfgrass. in The Use of Pathogens in Scarab Pest Management. T. J. Jackson and T. R. Glare (eds.) Intercept, London.

Nyrop, J. P. and M. Binns. 1991. Quantitative methods for designing and analyzing sampling programs for use in pest management. in: D. Pimentel ed. Handbook of Pest Management in Agriculture, pgs 67-132, 2nd edition, Volume III, CRC Press, Boca Raton.

McInnis, P. J. Jr., J. P. Nyrop, and W. A. Wolf. 1990. Agricultural decision support system design; the evolution of EASY-MACS. Proc. 3rd Inter. Confer. on Computers in Agric., Lake Buena Vista, FL.

Dennehy, T. J., J. P. Nyrop, and T. E. Martinson. 1990. Characterization and exploitation of instability of spider mite resistance to acaricides. in Managing Resistant to Agrochemicals: From Fundamental Research to Practical Strategies. M. B. Green, H. M. LeBaron and W K. Moberg eds. ACS Symposium Series 421 pgs 77-91. American Chemical Society, Washington.

Nyrop, J. P., B. Huber, and W. Wolf. 1989. Expert systems for use in integrated pest management; opportunities, requirements and pitfall. in Leslie, A. ed. Pesticide Problems and IPM Solutions for Urban Turfgrass and Ornamentals. U.S. Govt. Printing Press, EPA.

Dennehy, T. J., J. P. Nyrop, and T. E. Martinson. 1989. Characterization and exploitation of instability of spider mite resistance to acaricides. in Moberg, W. ed. Fundamental and Practical Approaches to Combating Resistance, pgs. 77-91, ACS Symposium Series, American Chemical Society.

Dennehy, T. J., C. J. Hoffman, J. P. Nyrop, and M. C. Saunders. 1989. Development of low spray, biological and pheromone approaches for control of grape berry moth, Endopiza viteana Clemens, in the Eastern United States. in Bostonian, B. ed. Monitoring and Integrated Management of Arthropod Pests of Small Fruits. Intercept, Andover, Hants, England.

Nyrop, J. P. 1989. Threshold use and sampling procedures. in Glass, E. H. ed. National IPM Symposium/Workshop Proceedings, April 1989, Las Vegas, Nevada. NYSAES, Geneva, NY.

Extension publications
Elliot, D. A. Luczynski, J. Nyrop and R. GreatRex.  2005.  Standard specification for Encarsia Formosa Gahan (Hymenoptera: Aphelinidae).  ASTM Standards.  2005.

Sarvary, M. H. Reissig and J. Nyrop.  2004.  Mortality of obliquebanded leafroller due to natural enemies in orchards treated with conventional or reduced-risk insecticides. New York Fruit Quarterly 12(4) 23-26.

Agnello, A., J. Nyrop, H. Reissig and D. Straub.  2004.  Apple arthropod management using reduced-risk pesticide programs.  New York Fruit Quarterly 12(3) 15-17. 

Prokopy, R., S. Wright, I. Jacome, W. Coli, J. Nyrop, K. Wentworth and C. Herring.  2003.  Establishment and biocontrol potential of released Typhlodromus pyri predator mite sin Massachusetts apple orchards.  Fruit Notes 68(2) 6-11.

Li, Kuo-Tan, J. P. Nyrop and A. N. Lakso. 2003  Effects of spotted tentiform leafminer and European red mite on apple leaf function and crop development.  New York Fruit Quarterly 11(4) 29-31.

Agnello, A., J. Nyrop, H. Reissig, and D. Straub.  2003.  Multi-species pheromone disruption inorchards under a selective pesticide program.  New York Fruit Quarterly  11 (1): 17-19.

Breath, D. J. P. Nyrop and J. Kovach. 1998. A guide for integrated mite control in apples in the northeast. Cornell IPM Publ. #215.

Nyrop, J. P., A. Roda, K. Wentworth, C. Herring and J. Minns. 1997. Advances in the biological control of spider mites in northeast apple orchards. Proceeding of the New England Fruit School, Sturbridge, MA.

Prokopy, R., S. Wright, J. Mason, J. Nyrop, K Wentworth and C. Herring. 1997. Comaparative level of establishment of released Typhlodromus pyri predatory mites in first-level and second-level IPM Orchard Blocks. Fruit Notes 62(2): 6-16.

Prokopy, R., S. Wright, J. Black, J. Nyrop, K. Wentworth, and C. Herring. 1997. Establishment and spread of released Typhlodromus pyri predator mites in apple orchard blocks of different size: 1997 results. Fruit Notes 62(4): 9-13.

Eckenrode, C. J. and J. P. Nyrop. 1995 Onion maggot management in New York, Michigan and Wisconsin. N.Y’s Food and Life Sciences Bull. No. 144.

Kain, D. P. and J. P. Nyrop. 1995. Predatory Mites. Insect identification sheet 123. Cornell Cooperative Extension.

Lakso, A. N., A. H. D. Francisconi, J. Nyrop and S.S. Denning. 1995. Heavy crop loads increase apple tree sensitivity to European red mites. New York Fruit Quarterly. 3:6-8

Lakso, A. N., A. H. D. Francisconi, J. Nyrop and S.S. Denning. 1995. How crop load changes apple tree sensitivity to European red mite. Proceedings New York Horticultural Society. 140:11-14.

Nyrop, J. P., D. P. Kain, J. Minns and A. Agnello. 1995. Improving the success of transferring the mite predator Typhlodromus pyri from one orchard to another. Proceedings New York Horticultural Society. 140:6-10.

Nyrop, J. P., A. M. Agnello and J. Minns. 1994. Impact of petroleum oil on phytoseiid mite predators. New York Fruit Quarterly. 2:11-13.

Reissig, W. H. and J. P. Nyrop. 1994. Timing insecticide applications for controlling plum curculio using a predictive model. New York Fruit Quarterly. 2:3-5.

Agnello, A. M., H. Reissig, J. Nyrop, J. Kovach, and R. Morse. 1994. Biology and management of apple arthropods. Cornell Cooperative Extension Bulletin 231.

Nyrop, J. P. 1993. Biological control of European red mite in apple orchards. New York Fruit Quarterly. 1:13-15.

Schmaedick, M. A. and J. P. Nyrop. 1993. Sampling second generation spotted tentiform leafminer: a means to reduce overall control costs and facilitate biological control of mites in apple orchards. New York’s Foos and Life Sciences Bullentin. No. 143. 4pp.

Agnello, A. M., J. Kovach, J. P. Nyrop, W. H. Reissig, and W. Wilcox. 1993. Apple IPM : a guide for sampling and managing major apple pests in New York State. New York State Integrated Pest Management Program. Number 207.

Nyrop, J. P. 1991. Bio-based management of insects and mites in apples. Proceedings Annual Meeting of the New York Horticultural Society, Rochester, NY.

Agnello, A., J. Kovach, J. Nyrop, H. Reissig, and W. Wilcox. 1991. Simplified Integrated Management Program. A Guide to Apple Sampling Procedures in New York. Cornell Cooperative Extension. IPM Number 201C.

Nyrop, J. P., P. McInnis, H. Reissig, A. Agnello, D. Rosenberger, W. Wilcox, and J. Kovach. 1990. EASY-MACS: A computer based system for apple pest management. Cornell Agric. News Service #15.

Nyrop, J. P. , W. H. Reissig, and A. M. Agnello. 1989. Mite management in apple orchards; new knowledge and tools. in Autio, W. ed. Proceedings of the 1989 New England Fruit School, Sturbridge, MA.

Petzoldt, C. H., R. Bellinder, W. Fry, R. Loria, J. Nyrop, W. Tingey, R. Wright, and T. Zitter. 1989. A guide to monitoring potato pests in New York state. New York Integrated Pest Management Program. No. 107. 58 pg.

Agnello, A., J. Kovach, J. Nyrop, and H. Reissig. 1990. Simplified Insect Management Program. A Guide to Apple Sampling Procedures in New York. Cornell Cooperative Extension. IPM Number 201B.

Nyrop, J. P. 1987. Integrated mite control in New York apple orchards. Prepared for Agricultural News Service (3/87 #16)

Dennehy, T. J., J. P. Nyrop, R. T. Roush, J. P. Sanderson, and J. G. Scott. 1988. Managing pest resistance to pesticides: A challenge to New York's agriculture. New York's Food and Life Science Quarterly. 17: 13-17.

Nyrop, J. P., and W. H. Reissig. 1988. Basing European red mite control decisions on a census of mites can save costs. New York's Food and Life Sciences Bulletin No. 123.

Agnello, A., J. Kovach, J. Nyrop, and H. Reissig. 1989. Simplified Insect Management Program. A Guide of Apple Sampling Procedures in New York. Cornell Cooperative Extension. IPM Number 201A.

Nyrop, J. P., R. L. Murray, and D. G. Mosher. 1979. Predicting forest tent caterpillar defoliation on sugar maple. Michigan Dept. Natural Resources Forest Pest Management Report MR-2-79. 4p.

Nyrop, J. P., J. T. Olsen, and D. G. Mosher. 1980. Management of jack pine-jack pine budworm system in the lower peninsula. Michigan Dept. Natural Resources For. Pest Mgt. Rpt. MR-2-80. 4p.

Nyrop, J. P., G. A. Simmons, and D. G. Mosher. 1982. The economics of pre-salvage alternatives as a method of minimizing spruce budworm losses. Mich. Coop. For. Pest Mgt. Prog. Tech. Rpt. 82-9. 54p.

Trade publications
Nyrop, J. P. and D. Dalthorp. 1995. Deciding on control of scarab grubs. Turf Grass Trends 4(8):8-15.

Nyrop, J. P. 1995. Petroleum oils and mite biological control: Do they mix? American Fruit Grower. 115:16J-16K.

Computer programs
Binns, M., J. P. Nyrop, and W. van der Werf. 2000. Sampling and Monitoring for Crop Protection Decision Making: MathCad programs for design and analysis url: www.nysaes.cornell.edu/ent/faculty/nyrop/cpdm

Nyrop, J. P., P. McInnis, W. Wolf, H. Reissig, A. Agnello, D. Rosenberger, W. Wilcox, and J. Kovach. 1992. EASY-MACS: A computer based decision system for apple pest management. Computer program available in IBM or Mcintosh format.

Nyrop, J. P., P. McInnis, W. Wolf, H. Reissig, A. Agnello, D. Rosenberger, W. Wilcox, and J. Kovach. 1991. EASY-MACS: A computer based decision system for apple pest management. Computer program available in IBM or Macintosh format.

McInnis, P.J., W. Wolf, and J. P. Nyrop. 1990. EASY MACS : A pest management system for apple production in New York, users guide. New York State Integrated Pest Management Program, Cornell University.