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Alfalfa regrowth after the last summer cutting. Image Credit: Hanna Wells.
Potassium Management to Improve Alfalfa Winter Survival - Articles Articles
Proper potassium management in fall can improve winter survival of alfalfa. More
Nitrogen deficiency in corn, characterized by yellowing along the midrib of the lower leaves, starting at the leaf tip and moving towards the stalk. (Image credit: Charlie White)
What is the Potential for Nitrogen Losses from Extreme Summer Rainfall - Articles Articles
The severity of nitrogen losses from extreme summer rainfalls, and how you react to them, depends on many factors. More
Potassium deficiency on this corn crop is exhibited by yellowing and necrosis of the leaf edges in the lower part of the canopy. Image credit: Jeff Graybill
Scouting for Nutrient Deficiencies - Articles Articles
Regular visual inspections, paired with tissue testing, soil sampling, and some help from eyes in the sky, can help diagnose nutrient deficiencies in a growing crop. More
Urea granules treated with a urease inhibitor. Photo credit: Charlie White
Will Your Nitrogen Stabilizer be Effective? - Articles Articles
Nitrogen stabilizer products are valuable management tools to prevent losses of N fertilizer and increase N use efficiency by the crop. Knowing how these products work will you help you maximize their effectiveness. More
Photo credit: Patrick Drohan
Soil pH Affects Forage Production - Articles Articles

Soil pH Affects Forage Production

Jessica A. Williamson, Ph.D., Charles White

Soil pH can be one of the greatest determinates of forage productivity and stand life. More
A field must have greater than 25% crop residue cover or a cover crop to be eligible for winter manure spreading, along with other restrictions. Photo credit: Charlie White
The Do’s and Don’ts of Winter Manure Spreading - Articles Articles
If winter manure spreading is absolutely unavoidable, follow these requirements to do it legally. More
Can I Apply Potash in Winter?
Can I Apply Potash in Winter? - Articles Articles

Can I Apply Potash in Winter?

Charles White, Nicole Santangelo

Ensuring properly timed potassium applications where they are needed when conditions permit. 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
Sclerotia of Slerotinia White Mold (Timber Rot) on a tomato stem.
Frequently Asked Questions about Timber Rot on Tomato - Articles Articles
I lost a lot of tomato plants to Sclerotinia/White mold/Timber Rot this past season, while I’ve seen some in past years, why was it so bad this season? More
Figure 5. Alternating row configuration is one strategy to manage competition between species in a mixture. Here forage radish alternates with Austrian winter pea.
Making the Most of Mixtures: Considerations for Winter Cover Crops - Articles Articles
This article discusses tailoring a cover crop mixture, building a complementary mix, determining which species to use, methods to establish mixtures, and considerations when terminating mixtures. More
Downy mildew on pumpkin. Photo: Beth K. Gugino, Penn State
Vegetable Disease Updates: August 30, 2017 - Articles Articles
Within the past week, there have been three separate reports of downy mildew on jack-o-lantern pumpkin in eastern Virginia. More
Managing Soil Health: Concepts and Practices
Managing Soil Health: Concepts and Practices - Articles Articles

Managing Soil Health: Concepts and Practices

Charles White, Mary Barbercheck, Ph.D.

Information for farmers and gardeners who want to understand the physical, chemical, and biological components of healthy soil and how to manage them. More
Rye Hairy Vetch. Photo: Elsa Sanchez
Growing Cover Crops for Nitrogen on Vegetable Farms - Articles Articles

Growing Cover Crops for Nitrogen on Vegetable Farms

Elsa Sanchez, Ph.D., Charles White

There are a lot of good reasons for using covers crops on vegetable farms including recycling or adding nitrogen to the soil. More
Symptoms of potato blackleg. Photo: Bob Leiby, PA Coop Potato Growers
Best Management Practices for Soft Rot Associated with Dickeya in Potatoes - Articles Articles
An aggressive form of black leg/soft rot caused by the bacterial pathogen Dickeya dianthicola has been confirmed in potato seed lots being grown in Northeast regions including Pennsylvania. More
Tomato-Potato Late Blight in the Home Garden
Tomato-Potato Late Blight in the Home Garden - Articles Articles
This article describes tomato-potato late blight, including symptoms; disease development, cycle, and management; and management after harvest. More
Bacterial wilt of pumpkin (Photo: Beth K. Gugino)
Why Are My Cucurbits Wilting? - Articles Articles

Why Are My Cucurbits Wilting?

Beth K. Gugino, Ph.D.

There are a number of diseases like bacterial wilt, cucurbit yellow vine decline and Fusarium wilt as well as abiotic stresses such as water logged soils that can cause cucurbits to wilt. More
Tomato late blight. Photo credit Beth Gugino, Penn State Plant Pathology.
Plant Disease Basics - The Disease Triangle - Articles Articles
Disease management begins with the fundamental understanding the three factors must be present and interact for disease to develop. More
Potato Cultivars Suggested for Pennsylvania and Resistance Characteristics
Potato Cultivars Suggested for Pennsylvania and Resistance Characteristics - Articles Articles
Host resistance is an important tool for managing diseases. Potato cultivars vary in susceptibility to common diseases including late blight, early blight and common scab. More
Bacterial Spot of Tomato: Biology and Management
Bacterial Spot of Tomato: Biology and Management - Articles Articles
Bacterial spot is becoming an increasingly devastating disease of tomato. The pathogen can directly damage the fruit, and severe foliar infection can lead to defoliation. More
Cucurbit Yellow Vine Decline in Pumpkins
Cucurbit Yellow Vine Decline in Pumpkins - Articles Articles
A number of different diseases including bacterial wilt and Fusarium wilt can cause cucurbits collapse in the field. Unfortunately, cucurbit yellow vine decline is another one to be concerned about. More
Gray fuzzy sporulation characteristic of leaf mold on the underside of a tomato leaf. Yellow chlorotic spots will be visible on the upper leaf surface.
Leaf Mold on Tomato: Host Resistance is a Management Option - Articles Articles
Leaf mold is not just a high tunnel disease, it can also be a problem in the field when conditions are favorable. More
Ecological Disease Management
Ecological Disease Management - Articles Articles

Ecological Disease Management

Beth K. Gugino, Ph.D.

In order for a plant to become diseased three conditions must be met: a pathogen, a favorable environment where the pathogen can thrive, and a susceptible host. More
Early blight symptoms on potato leaf
Early Blight - Articles Articles

Early Blight

Beth K. Gugino, Ph.D.

Early blight is caused by the fungus Alternaria solani and is a common problem for potato growers. More
Field of diverse crops in rotation
Introduction to Organic Farming: A Growing Opportunity for Pennsylvania Farmers - Articles Articles
This article provides basic information about organic farming, including getting started, considering your product/market, and deciding whether to be certified. More