Pests

Fire Blight Forecasting Software

Maryblyt v. 7.1 for Windows©


Welcome to the Maryblyt v.7.1 for Windows download page. This validated fire blight forecasting software is offered free of charge to growers, county agents, extension specialists, private consultants, and researchers. The software is offered without support (we will not be answering questions on software installation issues or program mechanics); however, comments and suggestions for improvement are welcomed.

Please don’t wait until blossoms are open in the spring to figure out how to use the software.

Please read the Disclaimer for use of Maryblyt 7.1 for Windows
West Virginia University, The University of Maryland, the USDA, and the software authors provide the software as a service. There are no warranties, express or implied, and, as with any disease prediction model, users should be aware that disease may occur even when the software is used properly. This software is easy to use and is therefore offered to users without support. By downloading the software, users agree to not hold responsible the above institutions and individuals for any losses associated with its use.

If you have questions about content on this page, please contact:

Dr. Alan Biggs (email)
Professor of Plant Pathology, retired
Division of Plant and Soil Sciences

Procedure for downloading and installing Maryblyt 7.1 for Windows

  1. In your browser, click on this link and save to the folder where you would normally store downloaded files.
  2. After the download is complete, unzip the MB7.1_Release_04-10-14.zip file by going to the Downloads folder.
  3. Then, RIGHT click on the file with the ZIP extension and select “Extract Files/All…” and click [OK]/[Extract]. This will create a new folder containing the installation items.
    Note: You also might be able to double-click on the ZIP file, and it should extract normally.
  4. Open the new folder and run the “setup.exe” program file.
  5. Follow the instructions on the screen to continue with the installation.

Notes on download issues: Mail servers running Outlook may not be able to come directly to this page by clicking on the embedded link. If this is a problem, you will need to copy and paste the URL (web address) into a browser’s address line. You may need to open a new tab before pasting the URL.

Notes on Installation issues: Microsoft no longer supports Windows XP. On computers still running XP, you may be asked during Maryblyt 7.1 installation to install Microsoft .Net Framework—more about .Net Framework)—required for the Maryblyt program to run. Windows Vista computers usually have .Net Framework installed already. Windows XP computers might want to download and install .Net Framework prior to installing Maryblyt 7.

Notes on program issues: On the first screen, clicking “View User Manual” may give an error message on some computers. In this case, open the user manual from Start/All Programs/Maryblyt Version 7/. This issue seems to be fixed in Version 7.1.

Download the Maryblyt 7 Manual (updated May 2014). Note this is the same manual that is packaged with Version 7.1, so you don’t need to download it if you’re running the latest version. Return to this page occasionally for updates to the manual.

Fire Blight Fact Sheets

Model Validations

A Statistical Comparison of the Blossom Blight Forecasts of MARYBLYT and Cougarblight with Receiver Operating Characteristic Curve Analysis. 2007. M. M. Dewdney, A. R. Biggs, and W. W. Turechek. Phytopathology 97:1164-1176. ( PDF version )

Analysis of fire blight shoot infection epidemics on four apple cultivars. 2008. Biggs, A.R., Turechek, W. W., and Gottwald, T. R. Plant Disease 92:1349-1356. ( PDF version )

Evaluation of the MARYBLYT computer model for predicting blossom blight on apple in West Virginia and Maryland. 1994. T. van der Zwet, A. R. Biggs, R. Heflebower, and G. W. Lightner. Plant Disease 78:225-230. ( PDF version )

See also:

Jones, A. L. 1992. Evaluation of the computer model Maryblyt for predicting fire blight blossom infection on apple in Michigan. Plant Dis. 76:344-347.

Bonn, G., and Leuty, T. 1993. An assessment of the Maryblyt computer program for the prediction of fire blight in Ontario, Canada. Acta Horticulturae 338:145-152.

Presentation Transcripts on Fire Blight Management by Paul Steiner, author of Maryblyt

Problems in Managing Fire Blight in High Density Orchards on M-9 and M-26 Rootstocks, Paul W. Steiner, Professor and Extension Fruit Pathologist, University of Maryland, College Park, MD (January 1998).

How Good are our Options with Copper, Bio-controls, and Aliette for Fire Blight Control?, Paul W. Steiner, Professor and Extension Fruit Pathologist, University of Maryland, College Park, MD (January 1998).

The Biology and Epidemiology of Fire Blight, Paul W. Steiner, Professor and Extension Fruit Pathologist, University of Maryland, College Park, MD (January 2000)

Managing Fire Blight in Apples, Paul W. Steiner, Professor and Extension Fruit Pathologist, University of Maryland, College Park, MD (January 2000).

A Philosophy for Effective Fire Blight Management, Paul W. Steiner, Professor and Extension Fruit Pathologist, University of Maryland, College Park, MD (January 2000).

Acknowledgements: Improvements to Maryblyt 4.3c made in part with grant funds awarded to W. Turechek and A. R. Biggs by USDA-CSREES/NE-IPM Program for projects entitled “Reduced antibiotic use on apple with improved Maryblyt forecasting” and “Using Maryblyt to manage economic risks of fire blight.”