Christina DiFonzo
Contact Me
Professor & Field Crops Entomologist
Saginaw Valley Research and Extension Center
Phone:
517-353-5328
Email:
difonzo@msu.edu
Degrees:
PhD - University of Minnesota, Entomology (1995)
MS - University of Minnesota, Entomology (1993)
BS - Mercyhurst College, Biology (1987)
Related Work
Authored Articles
- Weevils are popping in alfalfa fields, May 16, 2024
- Everything you need to know about seedcorn maggot, May 16, 2024
- Thrips, aphids and mites: Piercing-sucking pests that thrive in dry weather, July 5, 2023
- How insects survive cold: The potential effect of a mild winter, March 14, 2023
- Southwest Michigan field crops update – July 15, 2021, July 15, 2021
- First true armyworm outbreak in wheat since 2010, June 24, 2020
- Handy Bt Trait Table for U.S. corn production updated for 2020, February 18, 2020
- Identifying late-season caterpillars feeding in corn ears, August 9, 2019
- Potato leafhopper and general insect update for field crops, July 18, 2019
- How will the wet spring impact field crop insects?, June 18, 2019
- Black cutworms are here, May 20, 2019
- European corn borer resistance confirmed to Cry1F Bt corn, May 10, 2019
- Field crop insect update for July 23, 2018, July 23, 2018
- Asiatic garden beetles, soybean aphids and western bean cutworms arrive in time to see fireworks, July 5, 2018
- Attack of the Asiatic garden beetles in field crops, June 14, 2018
- Grubs and grub damage in field crops, May 14, 2018
- Asiatic garden beetles may cause corn field yield losses in southwest Michigan, March 26, 2018
- Time to scout and manage western bean cutworm in southern Michigan, July 13, 2017
- Western bean cutworms and Asiatic garden beetles are emerging in field crops, July 3, 2017
- Why and how to trap for western bean cutworms in corn and dry beans, June 19, 2017
- Spring moth flights and infestation potential for corn and wheat, May 4, 2017
- Sandhill crane repellent available for one more season, April 18, 2017
- Efficacy of Cry1F trait on western bean cutworm, October 6, 2016
- Check corn now for western bean cutworm damage before harvest, August 26, 2016
- Spider mite spraying in Michigan field crops: Brand new cheat sheet, August 1, 2016
- Western bean cutworm and corn rootworm populations increasing in corn, July 25, 2016
- Spider mite population could increase in field crops, July 6, 2016
- Soybean aphid thresholds, July 6, 2016
- Updated cereal leaf beetle fact sheet, June 23, 2016
- Armyworms, cutworms, cereal leaf beetles and refuge-in-a-bag concerns, June 7, 2016
- Crop scouting and…ticks?, June 2, 2016
- Armyworm and black cutworm trap catches for May 2016, May 26, 2016
- Early-season insect risk checklist for field crops, May 20, 2016
- Weeds, wet weather and cutworms, May 3, 2016
- New MSU Extension specialist to address apiculture and pollination, March 10, 2014
- Western bean cutworm flight and egg masses increasing, July 22, 2013
- Soybean aphid mini-outbreak continues in Michigan’s Thumb region, July 22, 2013
- Looking for unexpected damage to rootworm Bt corn, July 15, 2013
- Soybean aphid outbreak in Michigan’s Thumb region, July 15, 2013
- Yellow, stunted alfalfa may not be entirely due to drought, July 25, 2012
- The hidden costs of insurance pesticide applications to field crops, June 21, 2012
- Field crop insect update for June 21, 2012, June 21, 2012
- Potential for spider mites, especially in southern Michigan, June 21, 2012
- More black cutworm or soybean aphids this spring?, March 30, 2012
- Check corn fields for western bean cutworm in early September, August 29, 2011
- Western bean cutworms and soybean aphids are on the decline, August 17, 2011
- Soybean aphid numbers creep up, August 4, 2011
- Insect update for early August, 2011, August 2, 2011
- Western bean cutworm update for August 2, 2011, August 2, 2011
- Western bean cutworm update for July 25, 2011, July 25, 2011
- Insect update for July 15, 2011, July 15, 2011
- Western bean cutworm laying eggs in corn, July 15, 2011
- Insect update for early July 2011, July 11, 2011
- Silver spotted skipper in soybeans, June 27, 2011
- Armyworm and grass sawfly showing up in wheat, June 27, 2011
- Soybean aphids are infesting early planted fields, June 27, 2011
- Stink bugs in corn, June 27, 2011
- First western bean cutworm moths trapped, June 27, 2011
- Q&A about the strange world of cutworms this season, June 13, 2011
- Insect update for the week of June 12, 2011, June 13, 2011
- Scout now for armyworm and cutworm in southern and central Michigan, June 6, 2011
- How to bake a black cutworm cake, May 17, 2011
- 2ee labels issued for Brown Marmorated Stink Bug control in Michigan, April 28, 2011
Articles Featuring
- Overuse of Bt Corn Leads to Pest Resistance in U.S. Corn, April 11, 2025
- 100 years of MSU-USDA sugar beet research celebrated, September 18, 2023
- Christina DiFonzo awarded ESA professional award for excellence in extension, December 4, 2020
- Three students earn USDA NIFA predoctoral fellowships, September 24, 2020
- MSU virtual vegetable trial reviews for Saginaw Bay area, July 16, 2020
- Resistance: Yesterday, today & tomorrow, August 15, 2018
Authored Documents
- Strategies for Managing Mycotoxins, Ear Rots, and Ear Damaging Insects in Corn Silage, November 9, 2021
- Planting Date and Seeding Rate Impact Ear Rots, Mycotoxins, and Quality in Corn Silage, November 8, 2021
- Hybrid Selection and Fungicide Application for Managing Ear Rots and Mycotoxins in Silage Corn, November 10, 2020
- Insects Taking Flight, July 16, 2020
- Insects in Industrial Hemp Production in Michigan E3436, July 1, 2020
- Insect Issues for Late Summer, July 25, 2019
- Discussion about European Corn Borer, June 6, 2019
- Industrial Hemp Production in Michigan, May 24, 2019
- Aphids infesting winter wheat in Michigan, November 7, 2016
- Brown Marmorated Stink Bug Moves in the Midwest, April 4, 2011
- Integrated Mycotoxin Management in Corn Grain Through Control of Ear Rot and Western Bean Cutworm,
Videos
- Current Topics with Insects
- Insect Issues for End of July 2023
- Insect Bug Update
- Mid-summer Insect Update
- Insects Taking Flight
- First True Armyworm Outbreak in Wheat Since 2010
- Emergent Pests and Diseases
- Insect Issues for Late Summer
- Discussion about European Corn Borer
- Mitigating Control Failures in Bt Corn
- Resurgence of Western Bean Cutworm
- Basics of Insect Morphology
- Evaluating Insecticide Seed Treatments
- Entomology Farm Site-Specific Training Video