Professor of Entomology
Publication TagsSeed Neonicotinoid Pesticide Insecticide Insecticides Predation Wheat Crop Insect Corn Arthropods Soil Pest Bees Insects Maize Arthropod Crops Pests Integrated Pest Management Pest Control Economics Host Plant Effect Seeds Host Plants
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
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
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
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
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 F. 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, 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
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
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
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
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
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.
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.
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.
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.
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.
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.
May 16, 2019
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.
May 02, 2019
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.