Erik Runkle
Related Work
Authored Articles
- How do I use less energy to heat my greenhouse?, November 5, 2021
- Resources for greenhouse growers, florists and retailers during the COVID-19 pandemic, April 20, 2020
- Holding greenhouse crops – When temperature and PGRs don’t suffice, April 16, 2020
- Holding greenhouse crops, March 25, 2020
- Decreasing greenhouse expenses, November 14, 2018
- Annual Plant Trial Field Day: Aug. 6, 2019, July 27, 2018
- Cool night temperatures induce crown buds in garden mums, July 26, 2018
- Participate in the 2017 Michigan Garden Plant Tour, June 7, 2017
- Roberto Lopez joins MSU Horticulture with Extension responsibilities, August 2, 2016
- MSU Plant Trial Field Day on August 2, 2016, July 19, 2016
- 2016 Michigan Garden Plant Tour, June 23, 2016
- Increasing chrysanthemum height, September 16, 2015
- Putting plants on hold before shipping, March 27, 2015
- 2014 Michigan Garden Plant Tour, May 1, 2014
- Nutritional problems on geraniums, March 18, 2014
- Fresco now labeled for drench applications to promote extension growth of ornamentals, October 3, 2013
- New MSU Extension floriculture/nursery crop educator for southwest Michigan, August 22, 2013
- Michigan Flower Planting Day June 8, June 6, 2013
- New PGR Collate now registered in Michigan for greenhouse use, April 12, 2013
- REAP grant and loan opportunities for greenhouse energy projects, April 4, 2013
- New bulletin: Managing photoperiod in the greenhouse, March 18, 2013
- Wave Petunia Smart Scheduling Tool for greenhouse growers, January 30, 2013
- Participate in the MSU Plant Trial Field Day, July 19, 2012
- High temperatures on mum production, July 11, 2012
- Fresco guidelines to treat over-regulated plants, June 22, 2012
- Greenhouse shading options, April 27, 2012
- Fertilizer accumulation in growing media, April 19, 2012
- New free Greenhouse Energy Conservation Guide available, January 25, 2012
- Using CFLs to provide long days, January 16, 2012
- New videos address greenhouse sustainability, October 31, 2011
- Meet our new floriculture outreach specialist, October 20, 2011
- MSU plant trial field day on August 9, July 15, 2011
- The 2011 Michigan garden plant tour, June 10, 2011
- Tips on holding greenhouse crops, April 29, 2011
- Free webinar on plant growth retardants, April 21, 2011
- What are your biggest ornamental pest and PGR issues?, April 1, 2011
- Vegetative Petunia Propagation and Production Challenges, March 22, 2011
Articles Featuring
- What do you want to know about plant lighting in controlled environment crop production?, October 12, 2021
- Monitoring Vapor Pressure Deficit: use VPD sensor data for smarter growing, August 23, 2021
- Vertical greens growing trend gets its own USDA grant, July 14, 2021
- Increasing greenhouse production by spectral-shifting and unidirectional light-extracting photonics, June 22, 2021
- Technology extends ‘Salad Bowl’ to Midwest, March 29, 2021
- Regulation of the Photon Spectrum on Growth and Nutritional Attributes of Baby-Leaf Lettuce at Harvest and during Postharvest Storage, March 22, 2021
- MSU Horticulture faculty members ranked in top 2% of their field, January 6, 2021
- Plant science in a new light, December 17, 2020
- University Spotlight: Michigan State University, What’s Happening During Quarantine, November 6, 2020
- Ways the New Technical Requirement for LEDs Will Affect Horticulture Lighting, September 27, 2020
- Understand horticultural LED SPD for optimum plant wall experience, June 22, 2020
- Connecting Critical Horticulture Research to Those Who Need It, June 2, 2020
- Michigan State Webinar Tackles Tips for Holding Plants, April 11, 2020
- A Look at Lighting, March 5, 2020
- What Is the Ideal Lighting Spectrum?, March 1, 2020
- Michigan State University’s specialty crop research initiative grant funded by the USDA, February 11, 2020
- Lettuce research, pathogen control pursued on academic, industry fronts, January 31, 2020
- MSU leads study exploring the viability of using indoor farming to grow leafy greens, January 29, 2020
- Startups move indoors in race to find future farming solutions, October 13, 2019
- The Future of Greenhouse Lighting, August 8, 2019
- Osram Opto expands horticultural LED line with purple and broader white spectra, July 22, 2019
- GLASE releases schedule for webinar and technical article series, July 22, 2019
- Growing the future: High-tech farmers are using LED lights in ways that seem to border on science fiction, November 6, 2018
- Promoting agricultural innovation: US Secretary of Agriculture Sonny Perdue visits MSU to meet faculty, students, April 3, 2018
- Growing food in the future, January 11, 2018
Authored Documents
- The shade-avoidance response, May 11, 2022
- Evaporative cooling, part 1: Methods, April 6, 2022
- Light and temperature responses of bedding plants, March 10, 2022
- Photoperiod, light intensity, and daily light integral, March 2, 2022
- Blue light as a PGR, February 7, 2022
- Fixed vs. dynamic light quality for indoor hydroponic lettuce, February 2, 2022
- A closer look at LED efficacy, January 5, 2022
- Water vapor-pressure deficit, December 6, 2021
- The buzz of secondary metabolites, November 9, 2021
- Strategies to shorten crop production time, October 6, 2021
- Far-red and PPFD: A tale of two lettuce cultivars, October 5, 2021
- Light spectrum for different applications, September 8, 2021
- Differentiating broad spectra, September 6, 2021
- Increasing the daily light integral, August 6, 2021
- LEDs: More than μmol×J–1, July 7, 2021
- The indoor lighting guide: Growing seedlings under LEDs, July 1, 2021
- Challenges of growing vertically in greenhouses, June 8, 2021
- LEDs on lettuce: White light vs. red+blue light, June 7, 2021
- Light fixtures and their photon fluxes, May 6, 2021
- “Hidden” benefits of supplemental lighting, April 7, 2021
- Sole-source (lighting) for seed, April 5, 2021
- Maximizing photosynthesis, minimizing respiration, March 8, 2021
- Making sense of light sensors, February 10, 2021
- Purpling of leaves, January 8, 2021
- Early scaling-up challenges with LED lighting, December 14, 2020
- Effective long-day lighting fixtures, November 9, 2020
- Greenhouse energy efficiency tips, October 12, 2020
- How to produce poor-quality floriculture crops, September 11, 2020
- Height control of perennials: What works and what doesn’t, August 17, 2020
- Indoor propagation, July 14, 2020
- UV-transmitting greenhouse glazing, June 16, 2020
- Common plant production acronyms, May 8, 2020
- The importance of plant diagnostics, April 10, 2020
- What is the ideal lighting spectrum?, March 16, 2020
- The perils of low (greenhouse) temperature, February 13, 2020
- LED fixture efficacy: A 2020 update, January 13, 2020
- How much supplemental lighting do you need?, December 17, 2019
- Propagation pointers, November 14, 2019
- Greenhouse environment checklist, October 10, 2019
- Including far red in an LED lighting spectrum, September 9, 2019
- Managing light pollution, August 9, 2019
- An overview of long-day lighting, July 17, 2019
- Is green light useful to plants?, June 17, 2019
- The economics of lighting young plants indoors, June 12, 2019
- DLI 'requirements', May 10, 2019
- A little far-red light goes a long way, May 3, 2019
- LEDs: Blue & far-red light, April 10, 2019
- Crops suitable for vertical farming, April 10, 2019
- Success with PGRs, March 18, 2019
- Green and blue LED lighting, March 6, 2019
- LEDs: Far red & light intensity interaction, March 4, 2019
- Selecting an LED fixture, February 18, 2019
- How green light affects floriculture crops, February 13, 2019
- Lighting young plants indoors, February 4, 2019
- Leafy greens: Green & far red LED lighting, February 1, 2019
- Ethylene in floriculture, January 7, 2019
- DLC requirements for LED fixtures, December 5, 2018
- Growing ornamental seedlings under white LEDs, November 15, 2018
- White LEDs for plant applications, November 12, 2018
- New, high-resolution, interactive DLI maps, October 10, 2018
- Purple vs. pink vs. white LED fixtures, September 10, 2018
- Using a GA to increase plant height, August 8, 2018
- An update on LED lighting efficacy, July 5, 2018
- Horticultural lighting applications, June 11, 2018
- UV radiation and applications in horticulture, May 1, 2018
- Accelerating growth: What works and what does not, April 1, 2018
- Causes of flower bud abortion, March 14, 2018
- Temperature integration, February 5, 2018
- Maximize the benefits of supplemental lighting, January 8, 2018
- Does light quantity trump light quality?, December 5, 2017
- Factors that influence leaf coloration, November 15, 2017
- Developing new plant lighting standards, October 23, 2017
- Investment considerations for greenhouse lighting, October 11, 2017
- Supplemental greenhouse lighting: LED or HPS?, September 20, 2017
- Sole-source lighting of plants, September 13, 2017
- Lighting plans: Their generation and importance, August 17, 2017
- Plant lighting efficiency and efficacy, July 10, 2017
- Increasing height of chrysanthemum with PGR drenches, July 10, 2017
- Growing plants with green light, June 7, 2017
- Understanding how PGRs work, May 17, 2017
- The importance of light uniformity, March 3, 2017
- Far red is the new red, February 6, 2017
- Effects of blue light on plants, February 2, 2017
- Lighting Up Profits, December 23, 2016
- Wave® Smart Scheduling Tool, December 23, 2016
- Bedding plants with high base temperatures, December 14, 2016
- Red light spectrum - Role of far red radiation, November 9, 2016
- The economic viability of LED lighting, October 7, 2016
- Managing light to improve rooting of cuttings, September 7, 2016
- Red light and plant growth, August 7, 2016
- Success with succulents, July 31, 2016
- Juvenility in perennials, June 29, 2016
- A closer look at far-red radiation, May 7, 2016
- Diffused glass, April 23, 2016
- The boundary layer & its importance, March 31, 2016
- VPD vs. relative humidity, March 1, 2016
- Efficacy of lamp types at controlling flowering, February 23, 2016
- Improve rooting of cuttings, January 19, 2016
- Environment and PGR interactions, December 17, 2015
- FlowersOnTime, November 20, 2015
- Keys to successful seedling production, November 19, 2015
- Lighting metrics... and what matters, October 23, 2015
- Photoperiodic vs. photosynthetic lighting, September 23, 2015
- Dealing with nonuniformity, August 31, 2015
- Boom lighting, July 23, 2015
- Interactions of light, CO2, and temperature on photosynthesis, June 23, 2015
- Crops with relatively low optimum temperatures, May 17, 2015
- Trending: PGR sprenches, April 17, 2015
- Light wavebands & their effects on plants, March 23, 2015
- Crop Scheduling of Bedding Plants, February 23, 2015
- The PGR ancymidol, February 17, 2015
- Dealing with the cold, January 17, 2015
- Managing temperature during propagation, December 19, 2014
- Evaluating different colors of LEDs to control flowering, December 10, 2014
- Replacing incandescents with LEDs, November 23, 2014
- Growing your crops above their base temperature, November 17, 2014
- Increasing plant height, October 17, 2014
- The double-ended HPS lamp, September 23, 2014
- Growing ornamental seedlings under different wavelengths of red light from LEDs, August 23, 2014
- Effective use of PGRs, July 18, 2014
- LEDs vs. HPS lamps: A reality check, June 23, 2014
- Dealing with high temperatures, May 17, 2014
- Using chlormequat chloride with success, April 18, 2014
- Control flowering with LEDs, March 23, 2014
- Greening up calibrachoa & petunia, March 6, 2014
- Growing seedlings under LEDs, part 2, February 23, 2014
- Cold-intermediate bedding plants, February 22, 2014
- Growing seedlings under LEDs, part 1, January 23, 2014
- Cold-tolerant bedding plants, January 22, 2014
- Cold-sensitive bedding plants, December 22, 2013
- Flowering of petunia at low temperatures, November 22, 2013
- Keeping it Green, November 18, 2013
- Turning on/off supplemental lighting, October 23, 2013
- Problems with footcandles, lux and lumens, September 23, 2013
- Successful use of the PGR daminozide, August 18, 2013
- Temperature on chyrsanthemum, July 17, 2013
- Using the PGRs Collate and Florel, June 18, 2013
- PGR application considerations, May 18, 2013
- Non-chemical height control techniques, May 18, 2013
- Ethephon drenches on bedding plants, April 18, 2013
- PGR dilution guide, April 18, 2013
- Managing photoperiod in the greenhouse, March 23, 2013
- Wave petunia smart scheduling, March 22, 2013
- A new height control possibility for daffodils and hyacinths, March 18, 2013
- Manipulating day and night temperatures to control flowering and heating costs, February 22, 2013
- Plug / liner dip guidelines, February 18, 2013
- Controlling flowering of Echinacea, February 8, 2013
- Lighting plugs at different growth stages, January 23, 2013
- Maximizing photosynthesis to improve growth, December 23, 2012
- Sumagic on vegetable transplants, November 18, 2012
- Plant temperature under greenhouse curtains, October 17, 2012
- Which light sensor should I use?, September 23, 2012
- The latest on plug production: Seedling plug size effects on flowering time, September 22, 2012
- Replacing incandescent lamps, August 23, 2012
- Lighting the way with LEDs, July 10, 2012
- Improving crop quality, June 6, 2012
- High-temperature stress of bedding plants, May 17, 2012
- Successful use of paclobutrazol, April 18, 2012
- Greenhouse Energy Conservation Strategies (E3160), April 2, 2012
- Environmental & genetic approaches to lower greenhouse heating costs, March 22, 2012
- Long-day perennials, March 12, 2012
- Scheduling bedding plants for energy-efficient production, February 22, 2012
- Greenhouse energy conservation strategies, February 6, 2012
- Cutting edge greenhouse technology, January 6, 2012
- Lighting greenhouse vegetables, December 7, 2011
- Are you recognizing your heating costs?, November 17, 2011
- Resources for scheduling bedding plants, October 22, 2011
- A new paclobutrazol (Piccolo 10XC), September 18, 2011
- Watering bedding plants before shipping, August 22, 2011
- Propagating orchids, August 19, 2011
- Using ABA to reduce water loss, August 18, 2011
- Holding plugs and liners, July 7, 2011
- Managing crop quality, June 7, 2011
- The red to far red ratio, May 23, 2011
- Tips on using uniconazole, April 18, 2011
- Measuring greenhouse temperature, March 17, 2011
- Saturating DLIs for flowering, February 15, 2011
- Implications of base temperature, January 17, 2011
- Grow perennials with your annuals, December 29, 2010
- Sustainable production technologies -- a Dutch perspective, December 7, 2010
- Daily light integral & flowering of annuals, November 23, 2010
- Early growth regulator drenches on poinsettia, November 18, 2010
- The fundamentals of temperature, November 17, 2010
- Greenhouse temperature considerations, October 17, 2010
- The future of greenhouse lighting, September 24, 2010
- How to avoid GA carryover, August 18, 2010
- Spray vs. sprench vs. drench, July 18, 2010
- Correcting problems with HPS lamps, June 24, 2010
- Do it yourself (conduct your own trials), May 18, 2010
- Do it yourself (conduct experiments), May 7, 2010
- Reducing greenhouse energy consumption, April 22, 2010
- Maximizing PGR spray applications, April 18, 2010
- Rapid flowering of pansy, March 22, 2010
- Energy-efficient annuals 12: Pentas & verbena, February 22, 2010
- Height control for vegetable transplants, February 18, 2010
- Supplemental lighting guidelines for young plants, January 24, 2010
- Energy-efficient annuals 11: Angelonia & browallia, January 22, 2010
- Problems with petunia production?, December 22, 2009
- Energy-efficient annuals 10: Vinca & wax begonia, December 22, 2009
- Strategies for supplemental lighting, November 24, 2009