Roberto Lopez
Contact Me
Associate Professor
MSU Extension
Phone:
517-353-0342
Email:
rglopez@msu.edu
Degrees:
PhD in Horticulture
Related Work
Authored Articles
- Consult breeder culture sheets for success with new cultivars, March 20, 2024
- Ammonium toxicity can cause chlorosis in pansies and other crops, April 21, 2023
- What’s causing unusual growth on my poinsettias?, October 25, 2021
- Garden center retail survival strategy series: Communicating in extraordinary times, April 20, 2020
- Garden center retail survival strategy series: Thinking through the shopping experience, April 20, 2020
- Resources for greenhouse growers, florists and retailers during the COVID-19 pandemic, April 20, 2020
- Garden center retail survival strategy series: Marketing and merchandizing, April 20, 2020
- Holding greenhouse crops – When temperature and PGRs don’t suffice, April 16, 2020
- Don’t let downy mildew on impatiens surprise you, April 9, 2020
- Garden center retail survival strategy series: Overcoming challenges with a holistic approach, April 9, 2020
- e-GRO: Providing free online education for greenhouse growers, May 1, 2019
- Symptoms and consequences of chilling or freezing injury on greenhouse crops, February 27, 2019
- Inspect greenhouses to mitigate heat loss during sub-zero temperatures, February 1, 2019
- e-GRO: Providing free online education for greenhouse growers, December 11, 2018
- Tips on preventing poor rooting and leaf yellowing of problematic species propagated by cuttings, February 28, 2018
- Register now for 2017 Greenhouse Production, Plant Health and Marketing Conference, July 24, 2017
- Tips for improving the efficacy of ethephon PGR spray applications, May 16, 2017
- Garrett Owen joins MSU floriculture team serving east Michigan, April 28, 2017
- Greenhouse diagnostics workshop: Symptoms of cultural and environmental challenges, November 11, 2016
Articles Featuring
- Controlled-environment agriculture research sees innovation through Project GREEEN, March 13, 2024
- MSU-led team studying expansion of controlled environment culinary herb production across US, October 18, 2022
- Propagation of herbaceous unrooted cuttings of cold-tolerant species under reduced air temperature and root-zone heating, August 24, 2021
- Vertical greens growing trend gets its own USDA grant, July 14, 2021
- Studying how spectrum quality impacts transplant growth, June 24, 2021
- Greenhouse lighting strategies: finish red lettuce year-round with supplemental lighting, June 24, 2021
- Michigan State University Looking to Grow Specialty Cut-Flowers Sustainably with LEDs, June 1, 2021
- MSU Researchers: LED Lighting Speeds Growth for Local Flower Growers, May 21, 2021
- Boosting a blooming industry, May 7, 2021
- Modeling growth and development of hydroponically grown dill, parsley, and watercress in response to photosynthetic daily light integral and mean daily temperature, March 30, 2021
- Daily Light Integral Influences Rooting of Herbaceous Stem-tip Culinary Herb Cuttings, February 24, 2021
- Duration of light-emitting diode (LED) supplemental lighting providing far-red radiation during seedling production influences subsequent time to flower of long-day annuals, February 10, 2021
- Leveraging Controlled-Environment Agriculture to Increase Key Basil Terpenoid and Phenylpropanoid Concentrations: The Effects of Radiation Intensity and CO2 Concentration on Consumer Preference, February 10, 2021
- How Adding Far-red Radiation Affects Supplemental Lighting of Plant Plugs, August 18, 2020
- Connecting Critical Horticulture Research to Those Who Need It, June 2, 2020
- Michigan State Webinar Tackles Tips for Holding Plants, April 11, 2020
- Coronavirus epidemic halts some research at MSU, April 9, 2020
- Three Questions about Succulent Production, March 9, 2020
- A Look at Lighting, March 4, 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 researchers receive grant to study indoor production of greens, January 29, 2020
- GLASE releases schedule for webinar and technical article series, July 22, 2019
- Producing High Quality Microgreens under Sole-source Lighting, June 6, 2019
- Michigan State University partners with Philips Lighting to modernize greenhouse supplemental lighting, October 30, 2017
Authored Documents
- A Focus on Root-zone Temperature, August 5, 2023
- A Focus on DLI, June 11, 2023
- Answering key questions about indoor crops, November 9, 2022
- Avoiding Caladium Conundrums, October 1, 2022
- PGRs and Succulents, July 1, 2022
- Blooming by Lamplight, June 1, 2022
- Indoor farming FAQs, May 4, 2022
- A Study of the Latest Young Plant Technology, March 1, 2022
- Keys to Rooting Success, July 1, 2021
- Do Micro Drenches on Annuals and Perennials Work?, May 1, 2021
- Using and Maintaining High-Pressure Sodium in Greenhouses, March 1, 2021
- Culinary Herbs: To flower or not to flower?, February 1, 2021
- Indoor Production of Herb Seedlings: Light Intensity and Carbon Dioxide, December 1, 2020
- Rooting Herb Cuttings: Why Daily Light Integral Matters, October 1, 2020
- Red and Blue Radiation: Explore the Efficacy of LED Supplemental Lighting for High-Wire Vegetable Transplants, August 10, 2020
- Monitoring Growth of Bedding Plant Seedlings Using Images, October 13, 2019
- Forcing Long-Day Perennials into Flower with High-Intensity LEDs, October 1, 2019
- Leafy greens: Sole-source light intensity, June 6, 2019
- Leafy greens: Carbon dioxide injection, April 1, 2019
- Using Data Loggers in the Greenhouse, April 6, 2018
- Urban Crop Production in Vertical Farms, April 1, 2018
- Monitoring Carbon Dioxide in the Greenhouse, March 3, 2018
- Utilizing Supplemental Lighting in Urban Crop Production Environments, March 1, 2018
- Keeping in Front of the Curve: pH and EC Monitoring, January 12, 2018
- Infrared Thermometers for Monitoring Plant and Substrate Temperatures, December 9, 2017
- Enhancing Your PGR Applications, December 1, 2017
- How does Spray Water Alkalinity affect the Efficacy of Commonly used Plant Growth Regulators?, November 7, 2017
- Producing High-Quality Rooted Cutting, November 1, 2017
- Spice Up Your Container Combinations, September 1, 2017
- Tips for Rooting Perennial Cuttings, Part 2, August 1, 2017
- Tips for Rooting Perennial Cuttings, July 1, 2017
- Bulking and Height Control of Purple Fountain Grass with Plant Growth Regulators, February 1, 2017
- Successful Propagation of Purple Fountain Grass from Single-Internode Culm Cuttings, January 1, 2017
- LEDs for Propagation?, January 1, 2017
- Manejo de la Alcalinidad en Sustratos Hidropónicos, December 19, 2016
- El control de Algas en las Lagunas de Riego, December 19, 2016
- Medición de Luz Diaria Integrada en Invernaderos, December 19, 2016
- Medición de pH y Conductividad Eléctrica en Sustratos, December 19, 2016
- Propagación de Poinsettias (Flores de Pascua), December 19, 2016
- Alkalinity Management in Soilless Substrates, December 19, 2016
- Applying Plant Growth Retardants for Height Control, December 19, 2016
- Census of Ag. - Declines in Floriculture Producers, December 19, 2016
- Controlling Algae in Irrigation Ponds, December 19, 2016
- Disease-resistant Annual & Perennial Production, December 19, 2016
- Flower Induction of Annuals, December 19, 2016
- Measuring Daily Light Integral in a Greenhouse, December 19, 2016
- Measuring Daily Light Integral Pamphlet, December 19, 2016
- pH & EC Measurements in Soilless Substrates, December 19, 2016
- Plant Growth Regulators Pocket Reference, December 19, 2016
- Poinsettia Propagation, December 19, 2016
- Water-soluble and Controlled-release Fertilization, December 19, 2016
- Perennial propagators' successes and challenges, October 19, 2016
- Impact of light on bedding plant flowering response, August 7, 2016
- Using root-zone heating for energy-efficient petunia production, July 17, 2016
- Potential Effect of Water Quality on PGRs, November 18, 2015
- Customizing Crop Foliage Color With LEDs: Red Leaf Lettuce, October 24, 2015
- Successfully Propagating Yellow Petunia Cultivars, December 19, 2014
- High Tunnels: Reduce Heating Costs While Improving Bedding Plant Quality, November 17, 2014
- Growing your crops above their base temperature, November 17, 2014
- Bench-Top Root Zone Heating: Can You Reduce Air Temperatures and Finish Bedding Plants On Time?, November 17, 2014
- Understanding Light: Part 1 of 2, October 24, 2014
- Managing Photoperiodic Lighting, Part 2 of 2, October 24, 2014
- Lighting the Future of Young Plants, October 24, 2014
- Summer Production of Specialty Cut Flowers in High Tunnels, June 7, 2014
- Vermicompost Validity, part 2, March 19, 2014
- Vermicompost Validity, part 1, February 19, 2014
- The Basics and Beyond: Cold Finishing Poinsettias, February 9, 2014
- Using Parboiled Rice Hulls In Substrates To Finish Greenhouse Crops, December 19, 2013
- Keeping [geranium cuttings] green, December 19, 2013
- Keeping it Green, November 18, 2013
- DLICALC Online Tool: Helps Growers Calculate Daily Light Integral, October 24, 2013
- Comparing LED Lighting To High-Pressure Sodium Lamps, October 24, 2013
- Comparing LED Lighting To HPS Lamps For Plug Production, October 24, 2013
- Understanding The Differences Between Photoperiodic And Supplemental Lighting, October 24, 2013
- Parboiled Rice Hulls In Propagation Substrates, April 19, 2013
- Managing photoperiod in the greenhouse, March 24, 2013
- A new height control possibility for daffodils and hyacinths, March 18, 2013
- Potted Plants On CRFs, December 19, 2012
- Bedding Plants and CRFs, December 19, 2012
- Managing photosynthetic light during liner production, December 19, 2012
- A New Height Control Possibility for Easter Lilies, November 18, 2012
- Basics of Monitoring: Scouting for Pathogens & Pests, November 9, 2012
- Producing High-Quality Rooted Cuttings., October 24, 2012
- Reduce Flowering Time., September 24, 2012
- Grow Better Bedding Plants in Cold Weather., July 7, 2012
- Do High Tunnels Make the Cut?, July 7, 2012
- The Poinsettia: history and transformation, December 18, 2011
- How appealing are biodegradable containers?, November 18, 2011
- What are growers doing about sustainability?, November 18, 2011
- No two consumers are alike, November 18, 2011
- The value of biodegradable containers, November 18, 2011
- Consumer interest in 'green' plants, November 18, 2011
- Basics of Monitoring: The Greenhouse Environment, November 9, 2011
- Basics of Monitoring: Graphical Tracking, November 9, 2011
- Basics of Monitoring: Media pH, EC & Water Quality, November 9, 2011
- Rice hulls and PGRs - en Español, December 23, 2010
- Alkalinity in Soilless substrates, December 19, 2010
- Measuring pH and EC of Large Containers, December 19, 2010
- The potential of poinsettia trees, December 18, 2010
- Rice hulls and PGRs, November 18, 2010
- Early growth regulator drenches on poinsettia, November 18, 2010
- Non-Chemical Height Control, November 18, 2010
- Ten ways to heat your house., November 9, 2010
- Biocontainers For long-term crops., October 9, 2010
- Getting the most out of light measurements, September 24, 2010
- Revisiting poinsettia cold finishing up north., August 9, 2010
- In-house pH and electrical conductivity measurements in soilless substrates, December 19, 2009
- Successful poinsettia propagation, December 19, 2009
- Paper or Plastic., October 9, 2009
- Evaluate your greenhouse to save energy, September 9, 2009
- Factors affecting the willingness to adopt sustainable floriculture practices., August 9, 2009
- Consumer perceptions of sustainably produced poinsettias., August 9, 2009
- Producing poinsettias sustainably., August 9, 2009
- Cold finishing up north., July 9, 2009
- Reducing crop shrinkage., May 9, 2009
- Cutting propagation, December 19, 2008
- Gilding the lilies: Rainbow roses and confetti poinsettias, December 18, 2008
- How to market sustainability to consumers part III., December 9, 2008
- Getting results with liner dip, November 18, 2008
- 8 steps to take to become sustainable. part II., November 9, 2008
- Comparing PGRs, October 18, 2008
- Growers look at operating a sustainable greenhouse part I., October 9, 2008
- Cold and sustainable poinsettia production., July 9, 2008
- Steps toward sustainablity., December 9, 2007
- Choosing growth regulators doesn't need to be a chore, October 18, 2007
- Growing the best phalaenopsis 4: A complete production schedule, April 10, 2007
- Growing the best phalaenopsis 3: Temperature & light requirements, height, insect & disease control, March 12, 2007
- Cutting production and propagation: Is there room for improvement?, February 19, 2007
- Growing the best phalaenopsis 2: Media, transplanting, water & nutrient problems, February 5, 2007
- Growing the best phalaenopsis 1: An introduction to potted phalaenopsis orchids, January 10, 2007
- ZZ plant is an excellent choice for tough indoor use, January 8, 2007
- Getting the most out of cuttings, December 19, 2006
- Managing the cuttings environment, December 19, 2006
- Non-chemical height control strategies for greenhouse crops: part II, April 28, 2006
- Non-chemical height control strategies for greenhouse crops, April 14, 2006
- Managing light during propagation, June 24, 2005
- The flowering of orchids - A reality check, March 7, 2004