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Fire Blight and Apple Scab Models Available at PA-PIPE

Posted: April 26, 2011

Fire blight and apple scab models for locations throughout Pennsylvania are available at PA-PIPE. It is important to collect site-specific weather data in your orchards, but these models serve as a guide.

 

The Pennsylvania Pest Information Platform for Extension and Education (PA PIPE; http://extension.psu.edu/pa-pipe) was developed as a collaborative effort between Penn State College of Agricultural Sciences faculty, the Pennsylvania State Department of Agriculture, and ZedX, Inc. to provide an early warning system for key pests affecting agriculture and forestry in Pennsylvania.

The models developed utilize weather data, combined with local observations from researchers, local growers, and specialists, which are then processed with algorithim's intended to predict important events in crop, insect, and disease development cycles. The result is a spatial view of the development and significance of diseases, insects, weeds, and crop conditions for the entire Pennsylvania region.

The system is not intended for use when making important economic management decisions, but to help target the timing and need for monitoring of key insects, diseases, and crops in the area.

Apple Scab Model

The Apple Scab Disease model results depict disease severity based on suitability of environmental conditions for disease development. Suitability is determined or forecast based on wetness events and associated temperature. A wetness event is defined as a rainfall event or dew formation. Disease severity is organized into classes: inactive (no infection), active but no infection, and five severity levels: very low, low, moderate, high and very high.

Fire Blight Model

The Fire Blight model results depict disease severity based on suitability of environmental conditions for disease development. Suitability is determined or forecast based on wetness events and associated temperature. A wetness event is defined as a rainfall event or dew formation. Disease severity is organized into three classes. These classes are inactive (no infection), active, but no infection, and active and infectious.