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Symptoms of potassium deficiency.
Assessing and Managing Potassium Concentration in the Vineyard - Articles Articles
Potassium (K) plays a critical role in many plant physiology and biochemistry processes such as photosynthesis, osmoregulation, and enzyme activation. More
Spotted lanternfly feeding on grapevine. Image by Erica Smyers.
Updated Insecticide Recommendations for Spotted Lanternfly on Grape - Articles Articles
Insecticide recommendations for spotted lanternfly in grape, updated August 2018. More
Spotted Lanternfly Grape Pest Alert
Spotted Lanternfly Grape Pest Alert - Articles Articles

Spotted Lanternfly Grape Pest Alert

Heather L Leach, Michela Centinari, Ph.D.

This fact sheet provides identification, damage, quarantine, and management information for the spotted lanternfly, an invasive sap-feeding planthopper that feeds on the vine trunk, shoots, and leaves of grape plants, among other crops. More
Female spotted lanternfly and her egg mass. Photo: Emelie Swackhamer, Penn State
Tree Fruit Insect Pest - Spotted Lanternfly - Articles Articles

Tree Fruit Insect Pest - Spotted Lanternfly

Grzegorz (Greg) Krawczyk, Ph.D.

The spotted lanternfly, Lycorma delicatula, an invasive plant hopper was first detected in Pennsylvania in the fall of 2014. More
Botrytis bunch rot. Photo by W.J. Moller
Botrytis Bunch Rot: Winemaking Implications and Considerations - Articles Articles
This article will review the implications of molds and fruit rots on wine composition and quality and discuss remedial actions in the winery. More
Freeze damage on Concord. Photo: Michela Centinari, Penn State
Understanding and Preventing Spring Frost and Freeze Damage - Articles Articles
When early spring warming is followed by below freezing temperatures, grape growers keep their fingers crossed hoping to escape freeze injury. More
Osmia cornifrons on an apple blossom. Photo: David Biddinger
Orchard Pollination: Solitary (Mason) Bees - Articles Articles
Growers of bee-pollinated crops, particularly apples, may be interested in the possible use of solitary bees as pollinators. More
Mowing the sudex cover crop at the blueberry site at Five Elements Farm. The sudex was sown to compete against weeds, and was incorporated to add organic matter to the soil. Photo by J. Bozzelli.
Adding Small Fruits to Your Small Farm - Articles Articles

Adding Small Fruits to Your Small Farm

Marley E Skinner, Robert Pollock, Mike Basedow

Consider diversifying your farm by adding small fruit like blueberries or strawberries. More
Photo by M. Seetin.
Pollinators and Pesticide Sprays during Bloom in Fruit Plantings - Articles Articles

Pollinators and Pesticide Sprays during Bloom in Fruit Plantings

Dave Biddinger, Ph.D., Kathy Demchak, Ed Rajotte, Ph.D., Tara Baugher

Use of pesticides during bloom is a complicated problem with the solutions relying on understanding the detailed relationships among chemicals, pollinators and pest management needs. More
Establecimiento y Preparación de una Huerta
Establecimiento y Preparación de una Huerta - Articles Articles

Establecimiento y Preparación de una Huerta

Robert Crassweller, Ph.D., Montserrat Fonseca Estrada

El éxito de una huerta va de la mano con la planeación y preparación del sitio. More
University of Georgia Plant Pathology, University of Georgia, Bugwood.org
Grape Disease - Eutypa Dieback - Articles Articles
Eutypa dieback, Eutypa lata, is a fungal disease appearing as cankers on trunks and arms of infected grapevines. It is one of the most destructive diseases on the woody tissue of grapes. More
Grape Disease - Downy Mildew
Grape Disease - Downy Mildew - Articles Articles
Downy mildew, Plasmopara viticola, can infect berries, leaves and young shoots. It occurs wherever it is wet and warm during the growing season. More
John Hartman, University of Kentucky, Bugwood.org
Grape Disease - Crown Gall - Articles Articles
Crown gall, Agrobacterium tumefaciens, is characterized by galls or overgrowths that form on the roots, trunk, and arms of grape vines. V. vinifera are more susceptible than V. labrusca varieties. More
Riesling vines that show severe dieback due to winter kill. Photo: Bryan Hed
Grape Disease - Crown Gall, A Growing Concern in Vineyards - Articles Articles
Research efforts are generating extensive information on management of crown gall in vineyards, and there are new solutions in the pipeline. More
Cómo Diagnosticar un Problema en la Planta – 101
Cómo Diagnosticar un Problema en la Planta – 101 - Articles Articles
¿Hay algún problema con su planta? ¿Cuál es la causa? No asuma que sabe la respuesta y accidentalmente trate el problema equivocado. More
Botrytis infection at site of feeding damage. Photo by Kathy Demchak.
Bramble Disease - Botrytis - Articles Articles
Botrytis fruit rot or gray mold, Botrytis cinerea, is the most common and most serious disease of Rubus species worldwide. More
Grape Disease - Botrytis Bunch Rot
Grape Disease - Botrytis Bunch Rot - Articles Articles
Botrytis bunch rot, or gray mold, exists in all vineyards worldwide. This disease is caused by the fungus Botrytis cinerea and is commonly associated with the decay of ripe or nearly ripe grapes. More
University of Georgia Plant Pathology, University of Georgia, Bugwood.org
Grape Disease - Black Rot Photo Gallery - Articles Articles
Slideshow depicting various stages of black rot on grapes. More
Photo by Kathy Demchak.
Grape Disease - Black Rot - Articles Articles

Grape Disease - Black Rot

Kathy Demchak

Black rot, Guignardia bidwelli, is one of the most serious diseases of grapes in the eastern United States. More
Orchard Wildlife Management - Birds
Orchard Wildlife Management - Birds - Articles Articles

Orchard Wildlife Management - Birds

Margaret C. Brittingham, Ph.D.

On many farms or orchards, bird damage is minimal while for others, problems from birds can be substantial. 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
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., Krishona Martinson

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., Tianna DuPont

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., Tianna DuPont

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
Drift herbicide damage on tomato.
Using Proper Herbicide Formulations to Prevent Damage - Articles Articles
Use the proper herbicide formulations to prevent damage to non-target plants. More
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