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 80 countries worldwide (more than any other integrated research trial management software).



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.

Research Sponsors Recommended Practices

Is your company using ARM to standardize research data used to support product development and sales? This document (pdf) offers some recommended practices.
These practices are especially relevant when many of the company's experiments are conducted by contractors or cooperators, or even for in-house trials when the protocol writer is not the person who actually conducts trials for that protocol.

Recent changes

Here are the recent website updates:

GDM Position Announcement

GDM is looking for a Software Support Specialist (pdf) to join the GDM team! Contact GDM if interested.

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.

Electronic Downloads to Install ARM, ST, and Sponsor Customizations

Throw away those old program install CDs! The ARM Check for Updates tool will automatically download and install the newest supported ARM and ST version that you have licensed from GDM.
  • On a new PC, add GDM software by selecting this link www.gdmdata.com/ARMupdt/ARMupdt.exe to install and start Check for Updates (choose "Run" if asked whether to Run or Save).
    • Enter your ARM user name and password on the Login 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).

Organization membership

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


Better Business Bureau Accreditation

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