Floriculture Area of
      Expertise (AoE)

 
 

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Plant Growth Regulators (PGRs)

 

 

Plant Growth Regulator Research Website

The link above directs you to a webpage that provides research-based information on greenhouse use of plant growth regulators (PGRs) to regulate height of floriculture crops. All of the information presented is from experiments performed at Michigan State University. The primary objective of many of these experiments was to determine whether a PGR was effective on a particular species, not necessarily to identify a recommended rate. Developed by Matthew Blanchard and Erik Runkle.

Click to watch this short video

Click to watch this webinar

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Increasing plant height
E. Runkle
(Oct. 2014)
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Non-chemical height control techniques
E. Runkle
(Aug. 2014)
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Effective use of PGRs
E. Runkle
(July 2014)
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Using chlormequat chloride with success
E. Runkle
(Apr. 2014)
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Successful use of the PGR daminozide
E. Runkle
(Aug. 2013)
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Using the PGRs Collate and Florel
E. Runkle
(June 2013)
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PGR application considerations
E. Runkle
(May 2013)
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PGR dilution guide
E. Runkle
(Apr. 2013)
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Ethephon drenches on bedding plants
E. Runkle et al.
(Apr. 2013)
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A new height control possibility for daffodils and hyacinths
W. Miller et al.
(Mar. 2013)
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Plug / liner dip guidelines
E. Runkle
(Feb. 2013)
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Sumagic on vegetable transplants
E. Runkle & M. Blanchard
(Nov. 2012)
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Successful use of paclobutrazol
E. Runkle
(Apr. 2012)
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A new paclobutrazol (Piccolo 10XC)
E. Runkle
(Sep. 2011)
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Using ABA to reduce water loss
D. Craig, M. Olrich & E. Runkle
(Aug. 2011)
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Tips on using uniconazole
E. Runkle
(Apr. 2011)
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How to avoid GA carryover
E. Runkle
(Aug. 2010)
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Spray vs. sprench vs. drench
E. Runkle
(July 2010)
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Do it yourself (conduct your own trials)
E. Runkle
(May 2010)
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Maximizing PGR spray applications
E. Runkle
(Apr. 2010)
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Height control for vegetable transplants
E. Runkle
(Feb. 2010)
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Going beyond the surface
E. Runkle
(Sep. 2009)
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ABA coming to floriculture
E. Runkle
(May 2009)
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Brushing plants for height control
E. Runkle
(Feb. 2009)
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Getting results with liner dips
M. Blanchard, R. Lopez & E. Runkle
(Nov. 2008)
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The ABCs of PGRs
E. Runkle
(Nov. 2008)
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Comparing PGRs
R. Lopez, M. Blanchard & E. Runkle
(Oct. 2008)
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PGRs on perennials
E. Runkle
(June 2008)
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Improving branching and postharvest quality
S. Padhye, E. Runkle, M. Olrich, & L. Reinbold
(Aug. 2008)
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Choosing growth regulators doesn't need to be a chore
M. Blanchard, R. Lopez & E. Runkle
(Oct. 2007)
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Increasing poinsettia size
E. Runkle
(Oct. 2007)
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Early PGR drench applications on poinsettias
R. Lopez & E. Runkle
(Aug. 2007)
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Graphical tracking
E. Runkle
(July 2007)
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PGR drench guidelines
E. Runkle
(Apr. 2007)
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Recovering from a PGR overdose
E. Runkle
(Sep. 2006)
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Know your application techniques
E. Runkle
(Aug. 2006)
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PGR liner dips on bedding plants
M. Blanchard & E. Runkle
(Dec. 2005)
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Fascination on poinsettia
M. Blanchard, M. Olrich & E. Runkle
(Sep. 2005)
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How to increase plant height
E. Runkle
(Aug. 2005)
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Sumagic on bedding plants
C. Whitman, M. Olrich & E. Runkle
(Apr. 2005)
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Managing perennial stock plants with Florel
J. Glady, S. Lang & E. Runkle
(Aug. 2004)
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Florel on summer production of pansy
E. Runkle & R. Heins
(Apr. 2004)
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Tips for growth retardants
E. Runkle
(Apr. 2004)
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PGR rates and timing for plug production
C. Whitman & E. Runkle
(Nov. 2003)

Other Floriculture Crop Production Information pages:

 
 

 
 

  Copyright © 2014, Department of Horticulture, Michigan State University.

  This page was last edited Oct 10, 2014.
  Please send your comments to Dr. Erik Runkle runkleer@msu.edu

MSU is an affirmative action, equal opportunity employer. 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. Thomas G. Coon, 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.