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December 07, 2012
In the past several years, growers have tightly sealed their greenhouses to reduce heat losses and save on fuel costs, but the consequence can be slower plant growth. If crops develop roots slowly, if shoot growth is retarded, or if plants don’t use...
December 06, 2012
As Roberto Lopez helped more and more growers working to better understand and manage light in their greenhouses, a light bulb came on: There had to be an easier way.Working with graduate student Christopher Currey, Lopez, an associate professor and...
December 06, 2012
Many growers seek spring flowering perennials with attractive foliage characteristics. Erysimum ‘Fragrant Star’ is an exciting stable variegated spring blooming wallflower, destined to earn a place in many perennial programs. ‘Fragrant Star’ is easy...
December 06, 2012
Penny Goff, general manager and co-owner of Gritt’s Midway Greenhouse in Red House, W. Va., says all of the greenhouse vegetable growers she knows who grow hydroponically use some type of substrate.   “Hydroponics to me means growing with water...
December 06, 2012
Over the past few years Plug Connection has become more focused on vegetative varieties. Our Spring Trials display is known for being the only large-scale objective, side-by-side comparison trial in the industry. I hear from sales reps and growers...
November 12, 2012
About three years ago, I decided to take my sixteen years of experience as a process mechanical engineer and apply it to the greenhouse industry. In my previous work life, I was accustomed to more traditional practices of design and construction...
November 12, 2012
Newly developed natural products are offered to growers every day. Depending on the type of product, the label claims can include increased insect and disease resistance, increased water use efficiency, higher plant quality and longer shelf life....
October 12, 2012
Temperature is the primary factor that controls the speed of developmental processes in plants, such as time to flower, root development, and leaf unfolding. Growers usually monitor and control the temperature of the air because it’s easy and...
September 10, 2012
A greenhouse operation, like any business, wins on its margins. Every infrastructure investment must be evaluated for its ability to sustain profit margin gains. Lighting is no exception. Yield gains achieved through artificial lighting are...
August 09, 2012
Incandescent lamps are on their way out — or at least the traditional ones. Beginning in 2005, countries began to phase out the manufacturing, importation and/or sales of incandescent lamps simply because they are so inefficient at converting energy...
July 11, 2012
Light-emitting diodes (LEDs) are one of the trendiest technologies in the greenhouse industry. There are particularly interesting opportunities with LEDs in the production of young plants (plugs and liners) and high-wire vegetable (tomato, cucumber...
July 11, 2012
Daylilies (Hemerocallis) have long been popular perennials at retail and in the garden because they are beautiful and very easy to grow.   The challenge for retailers is having daylilies in bloom while retail traffic is at its peak since they...
June 08, 2012
Plant quality is an elusive term to describe. If you ask a grower to define what crop quality is, a common response is to hesitate and then say, “I know it when I see it.” That’s probably because a lot of different parameters are simultaneously...
June 08, 2012
Life branching out from the earth” is the simple philosophy of TerraVida. This new collection of tropical vine plants offers 18 unique and beautiful varieties that will provide a distinctive and colorful focal point for any garden, patio, doorway,...
June 08, 2012
These days, greenhouse growers are faced with increased competition and the rising cost of labor, energy and crop inputs. To maximize return on their investment, growers are gradually diversifying their crops to include hydroponic vegetables. Smart...
May 10, 2012
Temperature and light conditions in a greenhouse vary significantly throughout the year, especially in northern, temperate climates. During the winter, our environmental concerns for greenhouse production typically focus on low light levels, short...
May 10, 2012
The greenhouse environment, including light and temperature, has a large impact on our ability to grow and schedule high-quality greenhouse crops. Additionally, energy costs are second only to labor for many in today’s greenhouse industry. As a...
April 20, 2012
Western flower thrips (Frankliniella occidentalis) is the most destructive insect pest of greenhouses worldwide causing both direct and indirect damage to a wide range of horticultural crops. The primary means of dealing with these pests in...
March 13, 2012
Ornamental herbaceous perennials represent approximately 14 percent of the total value of floriculture crop production in the United States. An increasing number of perennials are grown and marketed in flower. Michigan State University faculty and...
March 13, 2012
In the process of solving a water source problem about three years ago, Metrolina Greenhouses learned a lot about the wide range of issues potentially affecting their water quality. As a result, they embarked on a deliberate program to evaluate the...
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