Gylling Data Management, Inc.
Providing Research Software Solution Since 1982!


We at Gylling Data Management (GDM) create, market, and support ARM software for managing and summarizing agriculture research experiments.
  • ARM saves time creating trials, analyzing data, and producing the many reports required for successful and timely trial management.

  • ARM is a recognized and respected standard throughout the crop production and protection industry.

  • ARM is used by thousands of researchers in nearly 100 countries worldwide.



Registration is now open for GDM ARM training at upcoming meetings

GDM is offering a free training session during the APS Annual Meeting in San Antonio, Texas, and during the ESA Annual Meeting in Denver, Colorado.
Please see our Meeting Calendar for information about when and where GDM workshops are held.

GDM workshops are offered free-of-charge to all that want to attend,

but registration is requested as limited seating is available.


Click here to register for the APS training session.
Click here to register for the ESA training session.

ARM 2017


ARM 9 and ST 8 are Obsolete

ARM 9 and ST 8 are obsolete and unsupported after 31 December 2016. Upgrade now to receive support.
  • ARM 9 licenses can be reassigned only when upgraded to the newest ARM version.
  • No support for questions or install problems.
  • Problems with protocols or trials created by an obsolete ARM version (ver. 9 or older) are not supported.
    Note: protocols or trials in .prt9/.dat9 created by supported ARM versions are supported.
  • Supported ARM versions will create protocols and trials in.prt0/.dat0 format in 2017, including ARM versions used by global sponsors.
  • See this presentation (pdf) for new features added to ARM since version 9.

Statistical Handbook, Third Edition is now available

GDM is pleased to announce the Third Edition of the Statistical Handbook.
"A Statistical Handbook for Agricultural Field Trials Specialist" is now available in eBook format from Amazon and Kobo.
  • The printed version of the handbook is also available from Amazon using this same link.

Recent changes

Here are the recent website updates:

ARM Maintenance Renewal

ARM version 2015+ includes a software maintenance plan, as described in ARM Licensing FAQ. Key maintenance benefits are:
  • All new software features are immediately available, delivered in the next update.
  • Software updates and upgrades are delivered automatically (including ARM 2016!).
  • Regardless of when you purchase ARM or ST, you receive all the newest software enhancements.
See ARM Client License Maintenance and Renewal (pdf) for an overview of the ARM maintenance renewal process.

ARM 2017 is now available!

The "ARM 2017" name identifies this ARM version as prepared for the 2017 field season. ARM 2017 contains all features of ARM 9.2014, ARM 2015, ARM 2016, plus many new features.
  • If you have not yet upgraded to the latest version of ARM, please review the information below about new features and benefits of ARM 2017. Contact your GDM Representative to request a price list.
  • ARM License Comparison (pdf) gives an overview of ARM license features for Full and Technician licenses.
  • See ARM 2015+ FAQ for details on ARM 2015+ questions, also support and upgrade changes.
  • See an ARM 2017-2016 Overview (pdf) of new features added in ARM 2017 and 2016. See ARM Features Since ARM 9 (pdf) for an overview of enhancements since ARM 9.
  • Use the Write to Us page to ask additional questions or request a price list.
  • GDM continues our policy that the most economical time to upgrade is always when a new version is first released.
  • For contract researchers, ARM 2017 fully supports all sponsor customizations and ARM versions, and will provide sponsors with better quality trials than previous ARM versions.
  • For ARM and ST license and copyright information, see the End-User License Agreement (EULA) (pdf) for GDM software.

Electronic Downloads to Install ARM, ST, and Sponsor Customizations

Throw away those old program install CDs! The ARM Check for Updates tool will download and install the newest supported ARM and ST version that you have licensed from GDM.
  • If replacing an old computer, see Transferring ARM to a New Computer (pdf) for instructions to migrate ARM and current settings, deactivate the old computer, and transfer the ARM activation to a new computer.
  • On a new PC, add your purchased GDM software by selecting this link to install and start Check for Updates (choose "Run" if asked whether to Run or Save).
    • Enter your ARM login name and password provided by GDM on the Log In dialog.
    • Select "Install Updates" to start installing the licensed GDM software available to you.
    • See ARM Install Instructions (pdf) for more information.
  • If you are a contractor or cooperator, Check for Updates also installs sponsor customizations you have been approved to receive: BASF, Bayer CropScience (only in North America), Dow AgroSciences, Syngenta, or SCC Group (Sumitomo Chemical Company/Valent). See Contract Researchers for more information. Contractors may request sponsor customizations (pdf).
  • If having troubles installing or updating ARM, see Issues Running Check For Updates FAQ to diagnose installation problems.
  • Request a Free Software Demonstration by using Write To Us page. You receive a time-limited full license that allows using all software features, so any experiments you create will be available after purchasing a full license.

Organization Membership

GDM proudly supports the following organizations as a corporate sustaining member:

Better Business Bureau Accreditation is registered with the Better Business Bureau's Dynamic Seal program.
Gylling Data Management, Inc., Computer Software Publishers & Developers, Brookings, SD