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Yellowmargined leaf beetle (YMLB) adult. Photo: Michael Skvarla, Penn State
Yellowmargined Leaf Beetle Serious Pest in Pennsylvania - Articles Articles

Yellowmargined Leaf Beetle Serious Pest in Pennsylvania

Michael J. Skvarla, Shelby Fleischer, Ph.D.

Yellowmargined leaf beetle (YMLB) (Microtheca ochroloma) is a serious pest of cruciferous crops. More
European corn borer: mouthparts pointing forward, glassy or cream colored body, wriggles when flicked with a finger as an escape behavior. Invades ear from side, bottom, or tip. Photo credit: M. E. Rice.
Avoiding Worms in Sweet Corn: How to Time Management Options - Articles Articles
Three species cause ‘wormy’ corn: the European corn borer, corn earworm, and fall armyworm. Insect traps baited with sex pheromones help time management options. More
Onion, Seed Corn, and Cabbage Maggots
Onion, Seed Corn, and Cabbage Maggots - Articles Articles

Onion, Seed Corn, and Cabbage Maggots

Shelby Fleischer, Ph.D.

These maggots attack seeds and small seedlings. While cabbage maggot and onion maggot attack only the seeds and seedlings of their namesakes, seed corn maggot will attack many plant species. More
Seedcorn maggot life cycle Photo: Art Cushman, USDA Systematics Entomology Laboratory, Bugwood.org
Don’t Transplant Maggots - Articles Articles

Don’t Transplant Maggots

Shelby Fleischer, Ph.D.

Root maggot infestations can start when growing the transplants. More
Bombus in pollinator cover crop plots. Photo credit Tianna DuPont.
Pesticides and Pollinators - Articles Articles

Pesticides and Pollinators

Christina Grozinger, Ph.D., Shelby Fleischer, Ph.D.

Researchers believe that long term honey bee declines are a result of a complex set of factors. More
Wild Bees for Pennsylvania Cucurbits
Wild Bees for Pennsylvania Cucurbits - Articles Articles

Wild Bees for Pennsylvania Cucurbits

Shelby Fleischer, Ph.D.

In addition to honey bees, which are managed, various un-managed species that exist as wild populations play key roles in providing pollination of cucurbit crops. More
Photo credit Mary Ann Frazier, Penn State Extension.
Who are Our Pollinators? - Articles Articles

Who are Our Pollinators?

Christina Grozinger, Ph.D., Shelby Fleischer, Ph.D.

Approximately three quarters of our major food crops are pollinated. Here we will look at how wild bees provide insurance against ongoing honey bee losses. More
Small Striped Bee (Halictus). Photo USGS Bee Inventory.
What Can We Do to Encourage Native Bees? - Articles Articles

What Can We Do to Encourage Native Bees?

Christina Grozinger, Ph.D., Shelby Fleischer, Ph.D.

Pollinators need a diverse, abundant food source and a place to build their nests and rear their young. If we keep these two elements in mind we can encourage native bee populations. More
Varroa mite parasitizing bee. Thought to be one of the major factors contributing to hive losses. Photo Alex Wild.
Pollinator Declines - Articles Articles

Pollinator Declines

Christina Grozinger, Ph.D., Shelby Fleischer, Ph.D.

Domestic honey bees hives are down by 59% compared to 60 years ago with rapid declines over the last forty years. The populations of some native bee species may also be declining. More