Penn State Extension
Penn State Extension
News Marssonina blotch is a foliar disease first identified in Pennsylvania in September 2017. Conditions are favorable for this disease and symptoms have been observed in several orchards. More
News Cation Exchange Capacity or CEC is a measure of the ability of a soil to hold cations or elements with positive charges. More
Articles MIP – Exploración y Manejo de la Roña de la Manzana
Kari A. Peter, Ph.D., Montserrat Fonseca Estrada, Tianna Dupont
Asegúrese de saber dónde pasa el invierno la roña de manzana, cómo supervisarla y cuándo es más probable que aparezca. More
News The Tree Fruit Pathology Lab at the Fruit Research and Extension Center is seeking apples infected with the fungus causing bitter rot from around the state of Pennsylvania in commercial orchards. More
News Continuamos nuestra serie donde hemos estado examinando informes de prueba del suelo para los túneles altos. More
News July started out dry and hot but transitioned quickly, with almost no warning, to very wet and hot. More
News Soluble salts commonly found in soils are calcium, magnesium, sodium, chloride, sulfate, and bicarbonate. Potassium, ammonium, nitrate, and carbonate are also found, but in smaller quantities. More
News Managing Fruit Rots This Season
07/26/2018
Fungicide re-applications are necessary since several inches of rain have fallen the last few days. Management considerations are discussed for mitigating pome and stone fruit rots. More
News Downy mildew was confirmed on cucumber in Mifflin County on July 11. Warmer weather throughout the state is helping crops along, but has also been good for insect pests. More
News Wet weather and variable temperatures across the state continue to be challenging for vegetable and berry production. More
News pH del suelo en una encuesta de 27 túneles altos en Pennsylvania More
News Niveles de fósforo, potasio, magnesio y calcio en una encuesta de 27 túneles altos en Pennsylvania. More
News Mid-Season Tree Fruit Disease Update
06/26/2018
The latest 2018 disease updates growers need to know for apple scab, fire blight, sooty blotch and flyspeck, bacterial spot, and cherry leaf spot. More
News Phosphorus (P), potassium (K), magnesium (Mg), and calcium (Ca) levels in a survey of 27 high tunnels across Pennsylvania. More
Articles Tree Fruit Disease Toolbox - Fungicide Resistance Management
Kari A. Peter, Ph.D.
Resistance has sometimes resulted in pest-management-program failures. Below are presented tactics to help delay resistance to fungicides. More
Articles Stone Fruit Disease - Rhizopus Rot
Kari A. Peter, Ph.D.
Rhizopus rot, caused by Rhizopus nigricans, can be very destructive to harvested fruit. More
Articles Apple Disease - Blossom End Rot
Kari A. Peter, Ph.D.
Blossom end rot of apple, is caused by various fungi (Sclerotinia sclerotiorum, Botrytis cinerea, Botrysphaeria obtusa) just before or during petal fall. More
News Cloudy weather, rainstorms, and variable temperatures across the state have slowed some crops and created very favorable conditions for disease development. More
News Fire blight symptoms are widespread throughout Pennsylvania and Maryland. Growers are encouraged to use Apogee or Kudos to shut down tree growth to limit the spread of the disease in orchards. More
News Conditions were incredibly optimal for many tree fruit diseases during the month of May. Management strategies for pome and stone fruit diseases are discussed. More
News Reports of fire blight infections have started to occur. The dos and don’ts of managing fire blight infections are discussed. More
News High Tunnel Soil Test Report: Soil pH
05/24/2018
Soil pH in a Survey of 27 High Tunnels in Pennsylvania More
News Trees need to be protected during wet conditions. The following are strategies for keeping diseases in check on apple and stone fruit during persistent rainy weather. More
News It’s no secret that this spring has been cold and wet across Pennsylvania. On many farms, planting has been delayed as much as three weeks, and many crops already in the ground are developing more slowly than usual. More
News The forecast for May 15–18 indicates conditions will be favorable for apple scab and bacterial spot on peach infections. If infections occurred during bloom, fire blight symptoms could begin to appear this week. More