November 30, 2010
When To Light and When To Shade: Ready Research Results
Plants increase in mass, or dry weight, through photosynthesis. Photosynthesis is the process that harvests light energy to drive critical processes resulting in plant growth. Why is increasing photosynthesis important? Increased photosynthesis is associated with increased flowering, increased plant quality and increased post-harvest life. How much, or how fast, a plant can photosynthesize depends on light intensity, carbon dioxide and temperature. Although much work was done during the 1960s and ’70s, there is little recent research on how changing light intensity, carbon dioxide and/or temperature affect photosynthesis of commonly grown greenhouse crops today. For this reason, we started a research project at the University of Minnesota with support from the Floriculture and Nursery Research Initiative and the American Floral Endowment to provide growers with answers to questions such as: How much supplemental light should I add to maximize photosynthesis? What is the impact on photosynthesis of adding supplemental carbon dioxide? […]
February 10, 2009
Energy-Efficient Annuals: Perfecting Temps & Light
Bedding and garden plants are the largest category of floriculture crops in the United States with a wholesale value of $1.76 billion in 2007. Scheduling these crops in flower for specific market dates, at different times of the year, can be a challenge. In addition, most bedding plants are produced when energy for heating a greenhouse is a large production cost, particularly in northern climates. To optimize the greenhouse environment and produce crops as energy efficiently as possible, more information is needed on how bedding plants respond to temperature and light. Figure 1. The effects of average daily temperature on time to flower and number of flower buds in petunia. Plants were grown under a 16-hour photoperiod and an average daily light integral of 20 molâˆ™mâˆ’2âˆ™dâˆ’1. The photograph was taken four weeks after transplant from a 288-cell plug tray. During the past several years, we have performed greenhouse experiments […]
June 17, 2008
If you think about it, there has been a huge increase in tools and instruments available to greenhouse growers during the last couple of decades that vary from large instruments like greenhouse control computers, to more portable instruments that help with day-to-day monitoring of plant growth. This article outlines some of the portable instruments available today and advantages and disadvantages of each. In many cases, these instruments can save you money by avoiding production problems, reducing the amount of outside testing that needs to be done and helping in immediate problem solving. How many times would you like to know your pH and EC immediately to decide what to fertilize with at that moment? What is your plant temperature? Is your media temperature what you think it is? New instruments available today can answer these questions. Infrared Thermometers Temperatures are rarely what we think they are! This is especially the […]
May 21, 2018
Insights From Lawmaker’s Visit to a Top 100 Greenhouse …
When Rep. Julia Brownley of California visited Sun Valley Group, she got a firsthand look at a very busy time in the life of a flower grower.
May 20, 2018
Smithers-Oasis Now Offering Rootcubes Foam Media in Ret…
Designed with smaller or hobby growers in mind, the Rootcubes packs are also ideal for larger growers to use for trials.
May 19, 2018
Westerlay Orchids Shows Its Support for Local Schools
Proceeds from all sales the company made during the Carpinteria Greenhouse and Nursery Tour will be donated to fund STEAM (Science, Technology, Engineering, Art, and Math) programs.
May 17, 2018
Ian Baldwin: Why the Rise of the Under 35s Will Help Yo…
In his latest blog, garden retail consultant Ian Baldwin says this new generation of plant buyers is seriously engaged in gardening, and is using social media to help become successful plant owners.
May 16, 2018
2018 Perennial Plant Symposium Offering Power to the Pe…
Perennial and gardening enthusiasts of all experience levels are invited to attend plant discussions on Monday, July 30 for a chance to hear from the best in the field on a range of topics.
May 15, 2018
Floriculture’s Future Hangs in the Balance Between Labo…
The nation’s largest growers are investing heavily in technology, new structures, human resources, and efficiency measures to stay competitive and profitable, despite significant labor shortages.
May 15, 2018
Gotham Greens Expanding Greenhouse Production Into Balt…
Scheduled to open in early 2019, Gotham Greens’ Baltimore facility will bring a reliable, year-round, local supply of fresh produce to serve retail, restaurant, and foodservice customers throughout the mid-Atlantic region.
May 14, 2018
Growing Innovations Geared to Connect Specialty Ag With…
Innovation abounds in agriculture, yet it can feel sometimes as if the gap between exciting new developments and what growers actually need in their operations can be awfully wide. We at Meister Media Worldwide intend to help narrow this gap. Which is why we’re pleased to introduce Growing Innovations – an altogether new type of event that will debut Nov. 7-8 at the Las Vegas Convention Center in Las Vegas, NV. Unlike most agricultural events and trade shows, Growing Innovations is not about technology per se, nor is it about everyday issues that growers face. Instead, this new conference and tradeshow is very acutely solutions oriented. It takes as its starting point specialty crop growers’ most pressing real-world challenges – production efficiency, labor and water shortages, logistics, and data management to name just a few – and showcases advances, both current and up-and-coming, that have the greatest potential to bring […]
May 12, 2018
Fungicide Resistance in Botrytis is an International Ch…
Clemson University’s research team is exploring Botrytis in cut roses to find out how to help you maintain postharvest crop quality by avoiding fungicide resistance.
May 11, 2018
New Sterile Ornamental Grasses One Solution to Grass In…
Aggressive grass species can turn gardeners off to using ornamental grasses. Less fertile alternatives offer options for keeping grasses from taking over the garden.
May 10, 2018
Beekenkamp Plants Acquires Sunny Osteospermum Breeding …
Beekenkamp took over all Sunny Holland sales activities in 2017, and now has ownership of the company’s entire breeding program.
May 9, 2018
How Greenhouse Sanitation Helps You Start Clean and Sta…
If you keep your greenhouse clean from the start, you’ll save yourself money in the end.
May 8, 2018
Greenhouse Production Costs Keep Going Up, So Why Are P…
There is a general sentiment within the industry that pricing needs to be reevaluated to better account for the trend toward rising input costs.
May 7, 2018
Lighting Innovator Fluence Bioengineering Acquired by O…
Fluence specializes in LED-based horticultural systems, using Osram LED chips, for a wide variety of applications, including vertical farming and greenhouses.
May 7, 2018
2018 Greenhouse Grower Top 100 Growers: The Complete Li…
Strong growth among the nation's largest growers shows no signs of slowing down, as nearly a third of the Top 100 growers have significantly expanded production, and many have ongoing projects underway.
May 6, 2018
Growing Tips From an Expert for Stokesia ‘Divinit…
'Divinity’ has large, white flowers that open with a hint of yellow in the center and then mature to a pure, long-lasting white.
May 5, 2018
Michigan State Experts Offer Tips on Managing Xanthomon…
After receiving numerous samples from across the state of begonias testing positive for Xanthomonas, experts at the university have developed a series of articles aimed at helping growers identify and control this disease.