20 Oct 2021
Michigan State University Crop Management Articles
Erik Runkle, Michigan State University
A collection of articles from the past year by Dr. Erik Runkle from Michigan State University that deal with leaf purpling, how photosynthesis and respiration affect plant growth, and the challenges of growing vertically inside greenhouses.
FRA 2021 Runkle Purple leaves (356 KB)
FRA 2021 Runkle Maximize Pn minimize Rs (263 KB)
FRA 2021 Runkle Growing vertically (414 KB)
22 Oct 2020
Rooting Herb Cuttings: Why Daily Light Integral Matters
Annika Kohler and Roberto Lopez, Michigan State University
Annika E. Kohler, graduate student, and Dr. Roberto Lopez from Michigan State University share the latest findings on supplemental lighting's effect of rooting of herbs.
Rooting Herb Cuttings DLI Matters (4583 KB)
22 Oct 2020
How Adding Far-Red Radiation to Supplemental Lighting Affects Plugs
Annika Kohler and Roberto Lopez, Michigan State University
Annika Kohler, graduate student, and Dr. Roberto Lopez from Michigan State University determine the minimum duration of far-red radiation required during plug production to induce long-day requiring plants into flower after transplant.
Lighting in Plugs Kohler Lopez (829 KB)
29 Aug 2019
Quantification of Poinsettia Root Growth by Image Scans or X-ray Computed Tomography Scans in Three Propagation Substrates at Varied Moisture Levels
Erin J. Yafuso, Paul R. Fisher, and Ana C. Bohórquez (University of Florida)
Refining protocols to quantify rooting of plant cuttings and the water/air microenvironment of substrates using x-ray computed tomography (CT).
Quantification of Poinsettia Root Growth by Image Scans or Xray (2363 KB)
1 Oct 2018
How to Grow Superfoods in Containers: Ginger and Turmeric
Sofia Flores, Rosanna Freyre, and Paul Fisher (University of Florida)
How to grow tumeric and ginger.
Ginger and Tumeric Greenhouse Grower (3000 KB)
1 Oct 2018
Cutting Types Transplanting Strategies
Juan C. Vallejo, Paul R. Fisher and Alan W. Hodges
Research on the effect of callusing on production time and shrinkage and to help growers decide when its most profitable to use each cutting type.
GPN October CuttingTypesandTransplanting (1977 KB)
15 Oct 2010
Spray vs. Sprech vs. Drench
Erik Runkle (Michigan State Univ.)
A brief overview of the different methods of applying PGRs
Spray sprench drench (69 KB)
15 Oct 2010
Maximizing PGR spray applications
Erik Runkle (Michigan State Univ.)
Learn about how to get the most out of spray applications of PGRs
Maximizing PGR spray applications (69 KB)
1 Oct 2010
Avoid GA Carryover
Erik Runkle (Michigan State Univ.)
Gibberellic acid (GA) can bind to concrete and be made available to the next crop, causing unintended consequencs. Read more...
Avoid GA carryover (87 KB)
4 Nov 2009
The ABCs of PGRs
Erik Runkle (Michigan State Univ.)
A brief discussion on the recent flurry of activity in the world of plant growth regulators, from new active ingredients to alternative formulations of established products
ABCs of PGRs (118 KB)
4 Nov 2009
Improving Branching and Postharvest Quality
Sonali Padhye (Univ. of Florida) and Erik Runkle (Michigan State Univ.)
When used properly, benzyladenine (BA) sprays can yield tremendous commercial potential, such as stimulating branching and delaying lower leaf chlorosis of some floriculture crops.
BA branching postharvest (458 KB)
4 Nov 2009
PGRs on Perennials
Erik Runkle (Michigan State Univ.)
Insights about how to choose the right PGR and application method for your herbaceous perennial crops.
PGRs perennials (1142 KB)
Key
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