John Tooker
Professor of Entomology

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506 ASI
University Park, PA - jft11@psu.edu
- 814-865-1895
Huck Graduate Students
Huck Affiliations
Publication Tags
Neonicotinoid Pesticide Seed Insecticide Soil Crop Insecticides Pest Control Effect Crops Glucose Oxidase Biological Control Bees Pests Pest Predation Corn Arthropod Life History Insect Seed Treatment Lycopersicon Esculentum Trichomes Maize Integrated Pest Management EconomicsMost Recent Papers
Planted-green cover crops in maize/soybean rotations confer stronger bottom-up than top-down control of slugs
Marion Le Gall, Matthew Boucher, John F. Tooker, 2022, Agro-Ecosystems
Life History, Biology, and Distribution of Pterostichus melanarius (Coleoptera
Anna K. Busch, Briana E. Wham, John F. Tooker, 2021, Environmental Entomology on p. 1257-1266
Preventative pest management in field crops influences the biological control potential of epigeal arthropods and soil-borne entomopathogenic fungi
Lindsay Johnston-Fennell, John Tooker, Brian A. Nault, Kyle Wickings, 2021, Field Crops Research
Newer characters, same story
John F. Tooker, Kirsten A. Pearsons, 2021, Current Opinion in Insect Science on p. 50-56
Wheat intraspecific diversity suppressed diseases with subdued yield, economic return and arthropod predation services
Julie Baniszewski, Amanda Burton, Armen R. Kemanian, Greg 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, István Mikó, 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
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
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
Most-Cited Papers
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 F. Tooker, 2015, Environmental Science & Technology on p. 5088-5097
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
Biology, ecology, and management of brown marmorated stink bug (Hemiptera
Kevin B. Rice, Chris J. Bergh, Erik J. Bergmann, Dave J. Biddinger, Christine Dieckhoff, Galen Dively, Hannah Fraser, Tara Gariepy, George Hamilton, Tim Haye, Ames Herbert, Kim Hoelmer, Cerruti R. Hooks, Ashley Jones, Greg 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 F. 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 Tooker, Michelle Peiffer, Seung Ho Chung, Gary W. 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 F. Tooker, 2015, Journal of Applied Ecology on p. 250-260
Salivary glucose oxidase from caterpillars mediates the induction of rapid and delayed-induced defenses in the tomato plant
Donglan Tian, Michelle Peiffer, Erica Shoemaker, John Tooker, Eric Haubruge, Frederic Francis, Dawn S. Luthe, Gary W. Felton, 2012, PLoS One
News Articles Featuring John Tooker
Mar 21, 2022
The Fight to Save the Embattled Monarch Butterfly
In the depths of the Californian winter, an ember of hope has flickered for the monarch butterfly, the charismatic and beloved visitor that has seemingly been on a graceful descent into oblivion.
Full Article
Mar 09, 2022
EPA Expected to Extend Use of Bee-Killing Pesticides
The U.S. Environmental Protection Agency (EPA) is expected to approve a proposal to extend the use of four neonicotinoids for the next 15 years. These pesticides are known to be especially dangerous for essential pollinators, like bees and butterflies, and have been linked to the widespread decline of insect populations.
Full Article
Mar 08, 2022
Fears for bees as US set to extend use of toxic pesticides that paralyse insects
The US Environmental Protection Agency is poised to allow the use of four of the most devastating chemicals to bees, butterflies and other insects to continue in America for the next 15 years, despite moves by the European Union to ban the use of toxins that have been blamed for widespread insect declines.
Full Article
Feb 22, 2022
Farmers are overusing insecticide-coated seeds, with mounting harmful effects on nature
Planting season for corn and soybeans across the U.S. will begin as soon as March in Southern states and then move north. As farmers plant, they will deploy vast quantities of insecticides into the environment, without ever spraying a drop.
Full Article
Apr 05, 2021
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.
Full Article
Apr 01, 2021
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.
Full Article
Jan 12, 2021
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.
Full Article
Jul 09, 2020
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.
Full Article
Aug 22, 2019
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.
Full Article
Jul 01, 2019
Find potato leafhoppers in your alfalfa with these 5 tips
Applying insecticides without knowing the number of pests in a field can cost you.
Full Article