John Tooker

Professor of Entomology

John Tooker

Huck Affiliations

Publication Tags

Seed Insecticide Insecticides Crop Neonicotinoid Pesticide Corn Insect Maize Insects Integrated Pest Management Crops Soil Pest Host Plant Arthropods Predation Wheat Host Plants Cover Crops Ecology Tephritidae Pest Control Bees Pheromones Trichomes

Most Recent Papers

Wheat intraspecific diversity suppressed diseases with subdued yield, economic return and arthropod predation services

Julie Baniszewski, Amanda Burton, Armen R. Kemanian, Gregory Wayne Roth, John Tooker, 2021, Agro-Ecosystems

Small-Grain Cover Crops Have Limited Effect on Neonicotinoid Contamination from Seed Coatings

Kirsten A. Pearsons, Elizabeth K. Rowen, Kyle R. Elkin, Kyle Wickings, Richard G. Smith, John F. Tooker, 2021, Environmental Science & Technology on p. 4679-4687

Giant polyploid epidermal cells and male pheromone production in the tephritid fruit fly Eurosta solidaginis (Diptera

Eric C. Yip, Istvan Miko, Jonah M. Ulmer, Nancy A. Cherim, Mark A. Townley, Steffen Poltak, Anjel M. Helms, Consuelo M De Moraes, Mark C Mescher, John F. Tooker, 2021, Journal of Insect Physiology

Assessing surface and subsurface transport of neonicotinoid insecticides from no-till crop fields

Sarah T. Frame, Kirsten A. Pearsons, Kyle R. Elkin, Louis S. Saporito, Heather E. Preisendanz, Heather D. Karsten, John F. Tooker, 2021, Journal of Environmental Quality on p. 476-484

Are polycultures for silage pragmatic medleys or gallimaufries?

Amanda B. Burton, Julie Baniszewski, Greg W. Roth, John F. Tooker, Armen R. Kemanian, 2021, Journal of Production Agriculture on p. 1205-1221

Wild bees as winners and losers

Melanie Kammerer, Sarah C. Goslee, Margaret R. Douglas, John F. Tooker, Christina M. Grozinger, 2021, Global Change Biology on p. 1250-1265

Ground Predator Activity-Density and Predation Rates Are Weakly Supported by Dry-Stack Cow Manure and Wheat Cover Crops in No-Till Maize

Elizabeth K. Rowen, John F. Tooker, 2021, Environmental Entomology on p. 46-57

Are bacterial symbionts associated with gall induction in insects?

Tobin J. Hammer, Rosemarie De Clerck-Floate, John F. Tooker, Peter W. Price, Donald G. Miller, Edward F. Connor, 2021, Arthropod-Plant Interactions

Sensory co-evolution

Eric C. Yip, Consuelo M. De Moraes, John F. Tooker, Mark C. Mescher, 2021, Journal of Ecology on p. 99-108

Preventive insecticide use affects arthropod decomposers and decomposition in field crops

Kirsten A. Pearsons, John F. Tooker, 2021, Applied Soil Ecology

Most-Cited Papers

Herbivore exploits orally secreted bacteria to suppress plant defenses

Seung Ho Chung, Cristina Rosa, Erin D. Scully, Michelle Peiffer, John F. Tooker, Kelli Hoover, Dawn S. Luthe, Gary W. Felton, 2013, Proceedings of the National Academy of Sciences of the United States of America on p. 15728-15733

A framework for evaluating ecosystem services provided by cover crops in agroecosystems

Meagan E. Schipanski, Mary Barbercheck, Margaret R. Douglas, Denise M. Finney, Kristin Haider, Jason P. Kaye, Armen R. Kemanian, David A. Mortensen, Matthew R. Ryan, John Tooker, Charlie White, 2014, Agricultural Systems on p. 12-22

Large-scale deployment of seed treatments has driven rapid increase in use of neonicotinoid insecticides and preemptive pest management in U.S. Field crops

Margaret R. Douglas, John Frazier Tooker, 2015, Environmental Science & Technology on p. 5088-5097

Biology, ecology, and management of brown marmorated stink bug (Hemiptera

Kevin B. Rice, Chris J. Bergh, Erik J. Bergmann, David Biddinger, Christine Dieckhoff, Galen Dively, Hannah Fraser, Tara Gariepy, George Hamilton, Tim Haye, Ames Herbert, Kim Hoelmer, Cerruti R. Hooks, Ashley Jones, Grzegorz Krawczyk, Thomas Kuhar, Holly Martinson, William Mitchell, Anne L. Nielsen, Doug G. Pfeiffer, Michael J. Raupp, Cesar Rodriguez-Saona, Peter Shearer, Paula Shrewsbury, P. Dilip Venugopal, Joanne Whalen, Nik G. Wiman, Tracy C. Leskey, John Frazier Tooker, 2014, Journal of Integrated Pest Management

Bee nutrition and floral resource restoration

Anthony D. Vaudo, John F. Tooker, Christina M. Grozinger, Harland M. Patch, 2015, Current Opinion in Insect Science on p. 133-141

Genotypically diverse cultivar mixtures for insect pest management and increased crop yields

John F. Tooker, Steven D. Frank, 2012, Journal of Applied Ecology on p. 974-985

Macronutrient ratios in pollen shape bumble bee (Bombus impatiens) foraging strategies and floral preferences

Anthony D. Vaudo, Harland M. Patch, David A. Mortensen, John F. Tooker, Christina M. Grozinger, 2016, Proceedings of the National Academy of Sciences of the United States of America on p. E4035-E4042

Role of trichomes in defense against herbivores

Donglan Tian, John Frazier Tooker, Michelle Peiffer, Seung Ho Chung, Gary Felton, 2012, Planta on p. 1053-1066

Neonicotinoid insecticide travels through a soil food chain, disrupting biological control of non-target pests and decreasing soya bean yield

Margaret R. Douglas, Jason R. Rohr, John Frazier Tooker, 2015, Journal of Applied Ecology on p. 250-260

Seeds of change

David W. Onstad, Paul D. Mitchell, Terrance M. Hurley, Jonathan G. Lundgren, R. Patrick Porter, Christian H. Krupke, Joseph L. Spencer, Christine D. Difonzo, Tracey S. Baute, Richard L. Hellmich, Lawrent L. Buschman, William D. Hutchison, John F. Tooker, 2011, Journal of Economic Entomology on p. 343-352

News Articles Featuring John Tooker

US Pesticide Use Is Down, but Damage to Pollinators Is Rising

The use of pesticides has decreased in the US by more than 40 percent since 1992, but the emergence of more-potent chemicals means that they are far more damaging to many species.

Birds versus bees: Here are the winners and losers in the great pesticide trade-off

Farms are battlefields, pitting growers against rapacious pests and aggressive weeds in never-ending, costly campaigns that often involve chemical weapons. Those weapons, alas, also harm innocent bystanders such as bees, fish, and crustaceans. Now, a large study charts epic shifts that have occurred in recent decades as U.S. farmers have changed their arsenal of pesticides.

Climate change reduces the abundance and diversity of wild bees, study finds

Wild bees are more affected by climate change than by disturbances to their habitats, according to a team of researchers led by Penn State. The findings suggest that addressing land-use issues alone will not be sufficient to protecting these important pollinators.

Gall fly outmaneuvers host plant in game of 'Spy vs. Spy'

Over time, goldenrod plants and the gall flies that feed on them have been one-upping each other in an ongoing competition for survival. Now, a team of researchers has discovered that by detecting the plants’ chemical defenses, the insects may have taken the lead.

Half a billion dead honey bees in Brazil show what happens when you roll back pesticide regulations

Insecticides kill insects. It should be no surprise, then, that in Brazil, which has seen a 27% increase in pesticide sales since last year, roughly 500 million honey bees were found dead in piles across four states in early spring.

Find potato leafhoppers in your alfalfa with these 5 tips

Applying insecticides without knowing the number of pests in a field can cost you.

New crop-destroying pest enters China amid devastating swine fever epidemic

A new pest that threatens key agricultural commodities is spreading through China while the nation already is reeling from an African swine fever epidemic that may wipe out hundreds of millions of hogs.

Alumna Laura Russo receives Robert May Prize from the British Ecological Society

PSU alumna Laura Russo has been selected to receive the Robert May Prize from the British Ecological Society, the oldest ecological society in the world. The prize recognizes the best paper by an early career researcher in the society’s scientific journal Methods in Ecology and Evolution.