New PGR calculator available for smart phones

Kristin Getter , Michigan State University Extension, Department of Horticulture, and Jeanne Himmelein, Michigan State University Extension -

This free, smart-phone application helps calculate dilution rates for all registered commercial plant growth regulators (PGRs).

PGR App LogoDr. Brian Krug at University of New Hampshire and Fine Americas, Inc. have developed a new smart-phone application that helps growers calculate PGR dilutions. This is similar to the old PGRCALC spreadsheet or web-based calculator that was available in the past, but now you can have it with you at all times on your smart phone. This free app is available for Apple (iPhone, iPad), Android, and Blackberry devices.

To use the app, first download it from the appropriate site – the Apple App Store for iPhone or iPad, the Android Market for Androids, or theNew Hampshire Cooperative Extension website for Blackberries. The application asks for three simple pieces of information that you must enter: The PGR used (from a drop-down list of all commercially available registered PGRs), gallons of final product to make, and concentration of that final solution in parts per million. Then, click the “calculate” button for the app to calculate the gallons of water and mL of PGR needed to mix together to achieve that final solution.

For more information, watch a video tutorial offered by Greenhouse Grower Magazine.

PGR App
Photo credits for this article: Brian Krug

This article was published by Michigan State University Extension. For more information, visit https://extension.msu.edu. To have a digest of information delivered straight to your email inbox, visit https://extension.msu.edu/newsletters. To contact an expert in your area, visit https://extension.msu.edu/experts, or call 888-MSUE4MI (888-678-3464).

Did you find this article useful?

You Might Also Be Interested In

Tag List
  • agriculture,
  • floriculture,
  • msu extension
  • follow us on youtube
  • follow us on linkedin
Michigan State University
  • Spartans Will.
  • © Michigan State University

MSU is an affirmative-action, equal-opportunity employer, committed to achieving excellence through a diverse workforce and inclusive culture that encourages all people to reach their full potential.

Michigan State University Extension programs and materials are open to all without regard to race, color, national origin, gender, gender identity, religion, age, height, weight, disability, political beliefs, sexual orientation, marital status, family status or veteran status. Issued in furtherance of MSU Extension work, acts of May 8 and June 30, 1914, in cooperation with the U.S. Department of Agriculture. Quentin Tyler, Director, MSU Extension, East Lansing, MI 48824. This information is for educational purposes only. Reference to commercial products or trade names does not imply endorsement by MSU Extension or bias against those not mentioned.

The 4-H Name and Emblem have special protections from Congress, protected by code 18 USC 707.

We comply with the Federal Trade Commission 1998 Children’s Online Privacy Protection Act (COPPA).