Penn State Extension

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Photo by David Almquist on Bugguide.org, used with permission.
Camphor Shoot Borer (Cnestus mutilatus) - Articles Articles
Camphor shoot borers are an introduced species of ambrosia beetle that attack small-diameter branches and trunks of stressed, weakened, and dying trees. They also accidentally bore holes into plastic gasoline containers, hoses, and tanks. More
Insects on Real Christmas Trees
Insects on Real Christmas Trees - Articles Articles

Insects on Real Christmas Trees

Michael J. Skvarla

Most real Christmas trees are free of insects and other arthropods. However, it is possible that some trees may harbor one or more species. More
Asian longhorned ticks are can be found on deer and other wildlife, as well as livestock and companion animals.
Asian Longhorned Tick, Haemaphysalis longicornis - Articles Articles

Asian Longhorned Tick, Haemaphysalis longicornis

Erika Machtinger, Michael J. Skvarla

The Asian Longhorned tick is a recent invasive tick to Pennsylvania. This tick can be found on wildlife and on livestock. It is important to be aware of the presence of this tick and to implement prevention and control measures when necessary. More
Sclerodermus Latreille
Sclerodermus Latreille - Articles Articles

Sclerodermus Latreille

Michael J. Skvarla

Sclerodermus are small wasps that can become pestiferous and sting people when they attack wood-boring beetle larvae that have infested wooden structures and furniture. More
Magnolia Leaf-Footed Bug
Magnolia Leaf-Footed Bug - Articles Articles

Magnolia Leaf-Footed Bug

Michael J. Skvarla

Magnolia leaf-footed bugs are brown bugs occasionally found on magnolia. They do not pose a risk to human health and do not cause damage to or reduce the vigor of infested trees, but may be nuisance pests. More
Jalysus wickhami. Photo © John Rosenfeld
Spined Stilt Bug - Articles Articles

Spined Stilt Bug

Michael J. Skvarla

Spined stilt bugs are an occasional pest of greenhouse tomatoes that can cause flower and fruit abortion and unsightly feeding damage in mature fruits. More
Researcher Aims to Limit Technology-based Distractions Researcher Aims to Limit Technology-based Distractions - News
Serap Gorucu, researcher at PSU, recently discussed youth ag safety at the “Technology-based Distractions in Farming Youth” seminar December 6 at Marshfield Clinic Research Institute. More
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
Michael Skvarla, director of the Insect Identification Lab in Penn State's College of Agricultural Sciences, holds a walking stick. Photo by Amy Duke
Penn State Department of Entomology Offers Insect Identification Services - News News
Director of the Insect Identification Lab in Penn State's College of Agricultural Sciences knows his bugs More
Photo: T. Baugher, Penn State
A Brief Guide to Hand Lenses - Articles Articles

A Brief Guide to Hand Lenses

Michael J. Skvarla

Arthropods, including plant pests and biocontrol agents, are often difficult to identify with the naked eye. More
Brown marmorated stink bug
Brown Marmorated Stink Bug - Articles Articles

Brown Marmorated Stink Bug

Michael J. Skvarla

The brown marmorated stink bug (BMSB) was first collected in September of 1998 in Allentown, but probably arrived several years earlier. More
Beef Feeding Operation
Beef Feeding Operation - Videos Videos

Beef Feeding Operation

Lynn Kime, Jayson K. Harper, Ph.D., John W. Comerford

4:08

Producer video describing the benefits, challenges, and marketing opportunities of a beef feeding operation. More
SAY Clearinghouse: Aligns with AFRN CS.03 and PST.02
Blind Spots and Peripheral Vision Demonstrations - Articles Articles
Aligns with the following AFNR Standard(s): CS.03 and PST.02: Low Alignment More
SAY Clearinghouse: Aligns with AFRN CS.03 and PST.02
Blind Spots and Skid Steers Demonstrations - Articles Articles
Aligns with the following AFNR Standard(s): CS.03 and PST.02. More
Beef calf
Beef Cow-Calf Production - Articles Articles

Beef Cow-Calf Production

Jayson K. Harper, Ph.D., H. Louis Moore, Ph.D., John W. Comerford

The beef cow-calf business is well adapted to small-scale and part-time farmers who have land suitable for pasture and hay production. More
Beef Cattle in feedlot
Feeding Beef Cattle - Articles Articles

Feeding Beef Cattle

Lynn Kime, Jayson K. Harper, Ph.D., John W. Comerford

Beef cattle feeding is possible on small and part-time farms, but the cost of feeding drops significantly as the size of the operation increases. More
Beef Cow-calf Operation
Beef Cow-calf Operation - Videos Videos

Beef Cow-calf Operation

Jayson K. Harper, Ph.D., H. Louis Moore, Ph.D., John W. Comerford

4:40

Producer video describing the benefits, challenges, and marketing opportunities of a cow-calf operation. More
Replacement Heifer Selection
Replacement Heifer Selection - Articles Articles

Replacement Heifer Selection

John W. Comerford

A costly, but extremely important, feature of the cow-calf herd is the selection and development of replacement heifers. More
Considerations for Retained Ownership of Feeder Cattle
Considerations for Retained Ownership of Feeder Cattle - Articles Articles
Retaining ownership of feeder cattle beyond the traditional time of sale at or near weaning is an option some cow-calf producers may consider. More
Cattle on Feed
Weaning Rations for Beef Steers for Two Rates of Gain - Articles Articles

Weaning Rations for Beef Steers for Two Rates of Gain

Daniel M. Kniffen, John W. Comerford

These rations are based on calves receiving an average grass/legume hay that is .28 mcal/lb NEg and 10% crude protein. More
Influence of Temperature on Feed Requirements of Beef Cows
Influence of Temperature on Feed Requirements of Beef Cows - Articles Articles

Influence of Temperature on Feed Requirements of Beef Cows

Daniel M. Kniffen, John W. Comerford

Here are some basic rules to evaluate the feed requirements of beef cows during the winter. More
Cows with calves on grass
Green Grass Calving - Articles Articles

Green Grass Calving

Daniel M. Kniffen, John W. Comerford

There are many advantages to green grass calving when compared to late winter early spring calving. More
Causes of Vaccine Failure in Beef Cattle
Causes of Vaccine Failure in Beef Cattle - Articles Articles

Causes of Vaccine Failure in Beef Cattle

Daniel M. Kniffen, John W. Comerford

Vaccine failure can be reduced by understanding cattle status, using good vaccination management using the right vaccines at the right time. More
Healthy pastures are the first step to weed management.
Weed Management in Pastures - Articles Articles

Weed Management in Pastures

John W. Comerford, Nancy Glazier

The best approach to weed control is the integrated approach. Keeping pastures healthy is the first step. More
Early Weaning Calves
Early Weaning Calves - Articles Articles

Early Weaning Calves

John W. Comerford

Early weaning calves will be an effective management tool for many breeders and will improve subsequent performance of the cow herd. More
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