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Mature marestail plant in Rock Springs, PA
Marestail (Horseweed) Management - Articles Articles

Marestail (Horseweed) Management

Dwight Lingenfelter, Annie Klodd, William S. Curran, Ph.D.

Effective management of marestail (horseweed) involves a combination of herbicide, mechanical, and cultural tactics. More
Treated (left) and non-treated (right) soybean seeds. Photo credit: Paul Esker & Alyssa Collins, Penn State.
Seed Selection Based on Disease Resistance Ratings - Articles Articles

Seed Selection Based on Disease Resistance Ratings

Paul D. Esker, Alyssa Collins, Ph.D.

Make choices for a healthy crop next season before putting even one seed in the ground. More
2017 Results: PA Commercial Grain and Silage Hybrid Corn Tests Report
2017 Results: PA Commercial Grain and Silage Hybrid Corn Tests Report - Articles Articles
This report provides independent and unbiased information for the evaluation of commercial corn grain and silage hybrids available in Pennsylvania. More
Photo by Margaret Douglas/Penn State
Pay Attention to Seed Options When Replanting Following Slug Damage - Articles Articles
Some are replanting corn and/or soybean following heavy slug damage. Pay attention to genetic, insect-resistant traits and seed-applied treatments because all that is offered is not always necessary. More
Figure 1 Penn State SEAREC- 2014 Corn Response to Fungicide Applications- D.G. Voight and A. Collins.
When to Consider Foliar Fungicide Applications on Corn - Articles Articles
Under certain conditions, applying a fungicide to corn may provide an economic return. A look at few key criteria will help in determining whether to apply fungicides or wait things out. More
2016 Results: PA Commercial Grain and Silage Hybrid Corn Tests Report
2016 Results: PA Commercial Grain and Silage Hybrid Corn Tests Report - Articles Articles
This report provides independent and unbiased information for the evaluation of commercial corn grain and silage hybrids available in Pennsylvania. More
2014 Results: PA Commercial Grain and Silage Hybrid Corn Tests Report
2014 Results: PA Commercial Grain and Silage Hybrid Corn Tests Report - Articles Articles
This report provides independent and unbiased information for the evaluation of commercial corn grain and silage hybrids available in Pennsylvania. More
2015 Results: PA Commercial Grain and Silage Hybrid Corn Tests Report
2015 Results: PA Commercial Grain and Silage Hybrid Corn Tests Report - Articles Articles
This report provides independent and unbiased information for the evaluation of commercial corn grain and silage hybrids available in Pennsylvania. More
Credit: Jeff Graybill
Pennsylvania Five Acre Corn Club - Articles Articles

Pennsylvania Five Acre Corn Club

Gregory W. Roth, Ph.D.

Pennsylvania Five Acre Corn Club is a collaboration between Penn State Extension and the Pennsylvania Corn Growers Association. More
Kansas Department of Agriculture, Bugwood.org
Wireworms as Pests of Field Crops - Articles Articles
Wheat wireworms and the eastern field wireworm are the predominant species that attack corn and other field crops in Pennsylvania. More
USDA ARS Photo Unit, USDA Agricultural Research Service, Bugwood.org
Western and Northern Corn Rootworm Management in Pennsylvania - Articles Articles
Corn rootworms have long been major economic pests in the United States. In Pennsylvania, corn rootworm damage has been sporadic, but increasing in recent years. More
Joseph LaForest, University of Georgia, Bugwood.org
Weevils on Stored Grain - Articles Articles
Worldwide, three species of weevils are among the most destructive pests of stored grains, seeds, and grain products. These are the rice, granary, and maize weevils. More
Frank Peairs, Colorado State University, Bugwood.org
Two-Spotted Spider Mite on Soybeans and Field Corn - Articles Articles
The two-spotted spider mite is an occasional pest of soybeans in Pennsylvania. Over the past 15 years, outbreaks have been associated with drought conditions. More
James Kalisch, University of Nebraska, Bugwood.org
Stalk Borer - Articles Articles
The stalk borer has been recognized as a problem in Pennsylvania agriculture for 150 years. The larvae bore into stalks and stems and feed within the plants. More
Sod Webworm as Occasional Pests of Field Corn
Sod Webworm as Occasional Pests of Field Corn - Articles Articles
Several species of sod webworms occasionally may be serious pests to young corn plants during May and early June. More
Whitney Cranshaw, Colorado State University, Bugwood.org
Snailcase Bagworm - Articles Articles
The snailcase bagworm is a moth (family Psychidae) that was accidentally introduced into the United States from Europe in the 1940s. More
Howard F. Schwartz, Colorado State University, Bugwood.org
Seedcorn Maggot as a Pest of Field Corn - Articles Articles

Seedcorn Maggot as a Pest of Field Corn

Mary Barbercheck, Ph.D.

The seedcorn maggot, a pest imported from Europe, is now established throughout the United States. Corn and soybeans are the major crops attacked. More
Clemson University - USDA Cooperative Extension Slide Series, Bugwood.org
Sawtoothed and Merchant Grain Beetle - Articles Articles
The sawtoothed grain beetle, and the closely related merchant grain beetle, can be found with other insects in contaminated stored grains in Pennsylvania. More
Pest Alert - Omnivorous Leafroller
Pest Alert - Omnivorous Leafroller - Articles Articles
The omnivorous leafroller has recently been confirmed in a greenhouse in Pennsylvania. Your assistance is needed in monitoring this pest indoors and outdoors in Pennsylvania. More
Gary Alpert, Harvard University, Bugwood.org
Indian Meal Moth - Articles Articles
The Indian meal moth is a common pest of stored grains and pantries. The larvae feed on grains, dried fruits, nuts, cereals, and a variety of processed foods. More
Garden Symphylan as a Pest of Field Crops
Garden Symphylan as a Pest of Field Crops - Articles Articles
The garden symphylan is an occasional but destructive pest of field crops. Symphylans are not insects, but are more closely related to centipedes and millipedes. More
Agna Rodrigues, Bugwood.org
Flour and Grain Mites - Articles Articles
The grain or flour mites are one of the most important mites infesting food and feed products, cereals, dried vegetable materials, cheese, corn and dried fruits. More
Frank Peairs, Colorado State University, Bugwood.org
Flea Beetle - Articles Articles
The corn flea beetle is the most common species found in Pennsylvania attacking field corn. More
Clemson University - USDA Cooperative Extension Slide Series, Bugwood.org
Dark and Yellow Mealworms - Articles Articles
Mealworms are among some of the largest insect pests of stored products. More
Frank Peairs, Colorado State University, Bugwood.org
Corn Leaf Aphid on Field Corn - Articles Articles
The corn leaf aphid is found throughout the United States and southern Canada. This native pest species feeds on sorghum, corn, small grains, and other grasses. More
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