Water Woes
Greenhouse Product News
June 2008
By Demie Moore, Fred Harned and Rick Bechtel
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Grower 101: When Water Becomes an Issue
Greenhouse Product News
December 2007
Sylvain Hélie
Capillary mats are nothing new, but with the relatively recent design revisions, growers are finding they can help produce a uniform crop while conserving water.
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Handling Drainage Water
Greenhouse Product News
October 2007
By John W. Bartok, Jr.
Ensuring proper water drainage both within and around your greenhouse can prevent pesky problems down the road, such as erosion, flooding, disease and accidents. Here’s what you need to know to keep your greenhouse dry and healthy.
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Grower 101: Quenching Your Thirst for Irrigation
Greenhouse Product News
March 2007
By George Elliot
Last month, this 2-part series discussed principles of irrigation management and looked at irrigation management systems. This article discusses irrigation delivery systems in terms of functional characteristics and management potential.
PDF Version
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Whats In Your Water?
GPNmag.com
January-December 2006
Jeff Roseman
This newsletter is the first in a bi-monthly series designed to help educate growers on water quality issues, on treatment technologies, proper testing procedures, pending regulations that could be implemented and what some growers did to lessen the impact of poor water quality. In this issue, we want to make readers aware of the benefits of instituting a water quality program and introduce some the different technologies and procedures surrounding Water Quality.
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Grower 101: Get Cultured
Greenhouse Product News
April 2005
By Donald J. Merhaut
The greater the concentration, the more quickly it disinfects. However, too much chlorine may also kill plants.
PDF Version
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Water Quality: Is It An Issue?
Greenhouse Product News
October 2004
By Carrie Burns
This just shows that different growers have different needs with water quality.
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Alternative Hydroponic Substrates
Greenhouse Product News
August 2004
By Bridget White
Rockwool and perlite have been the standard for years, but with so many alternatives out there now, it’s time
to reconsider the basis of your growing system.
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Pythium and Recycled Irrigation Water
Greenhouse Product News
May 2004
By Ping Kong, Patricia A. Richardson and Chuan Hong
Reclaiming water may be cost efficient, but are you doing the right things to prevent a Pythium outbreak?
PDF Version
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Clearstream Myco Media Filter
Greenhouse Product News
February 2004
By Neda Simeonova
The Myco filtration system is unique in that it is extremely effective but doesn't require frequent maintenance such as backwashing or cleaning.
PDF Version
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Mist 'R Drench Sprayers
Greenhouse Product News
October 2003
Neda Simeonova
Because selecting dependable and long lasting equipment is a key factor for a successful business, we asked growers to evaluate and share their experiences with Mist 'R Drench Sprayers.
PDF Version
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Hydroponic Tomatoes
Greenhouse Product News
October 2003
Lynette Morgan
Obtaining economic yields of high-quality fruit while minimizing the use of pesticides and other agrichemicals has put commercial tomato growers under increasing pressure, and many are now looking to modified hydroponic systems where higher profits are possible. Many of these new tomato-growing techniques involve the production of "spray-free" crops and using organically based systems.
PDF Version
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Grower 101: Reverse Osmosis --The Pros and Cons
Greenhouse Product News
June 2003
Jeff Roseman
By starting with water that is free from impurities and minerals, reverse osmosis water can help make growing more calculable, since the water quality is constant. Nutrients can be better controlled without having to worry about what is in the water source at the beginning of the irrigation process. Contaminants in the water source, such as iron, manganese, calcium, magnesium and chlorine, can react with the nutrients and cause problems with fertilizer mix.
PDF Version
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A Water-Wise Industry
Greenhouse Product News
February 2003
Bridget White, Editor
. I've been invited to speak for four hours about the Federal Clean Water Act, water conservation measures and drought-tolerant plants. And while I'm a little nervous about having to fill such a large chunk of time, I'm excited to see that people are already preparing for what's ahead.
PDF Version
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Hydroponics: Successful Surfing
Greenhouse Product News
September 2002
Elizabeth Pensgard
Following are listings of Web sites that GPN found useful for the beginner or the established hydroponic vegetable grower, as well as for those on the fence.
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Overcoming Drought Part III: Saving Waste to Water
Greenhouse Product News
September 2002
Brandi D. Thomas
If you live in an area prone to drought, where your water supply could be restricted, if you're looking for possible long-term cost savings on water, or if you just happen to be concerned about the future of our fresh water supply, you may want to start thinking about wastewater as an alternative irrigation source--the treated kind, that is.
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A Primer on Hydroponic Cut Tulips
Greenhouse Product News
August 2002
Bill Miller
In Holland, approximately 30-35 percent of the cut tulip crop is forced hydroponically, and we have been evaluating this production method at Cornell over the past two seasons. While our experiences have been very positive, there are several important details to understand and act upon before a high-quality crop can be produced.
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Overcoming Drought, Part II: Trends in Greenhouse Irrigation
Greenhouse Product News
August 2002
Beth Meneghini
The view of water as cheap and plentiful has slowly begun to change. To help reduce the demand on fresh water supplies, the idea of using reclaimed water is gaining momentum. Cities like Tucson, Ariz.; San Diego and Pasadena, Calif.; Austin, Texas; and Tampa and St. Petersburg, Fla., are using reclamation systems to conserve water and reduce heavy reliance on water sources from outside their regions.
PDF Version
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GROWER 101: Irrigation Practices
Greenhouse Product News
July 2002
Carrie Burns
These three steps can help you utilize water properly with the minimum amount of waste. The first step should be implemented by all greenhouses wherever feasible. The second is better but more expensive, so it should be executed when financially possible. And the third is ideal.
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Maximizing Fertilizer Use and Minimizing Runoff
Greenhouse Product News
May 2002
John M. Dole and Janet C. Cole
Controlling fertilizer and water use and runoff is a necessity for some businesses due to their proximity to environmentally sensitive natural areas or water sources. Reducing water and fertilizer use for many businesses, however, is becoming increasingly important to control expenses. Research at North Carolina State University and Oklahoma State University is shedding new light on how to manage fertilizer and water use.
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Automated Benching Systems
Greenhouse Product News
May 2002
Mike Porter
Flood floor systems and automated benching systems cost approximately the same, and automation exists for both systems that allows efficient use of labor and maximum flexibility.
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Disease Management
Greenhouse Product News
April 2001
Hannah Mathers
Although the use of recirculated water has brought on increased incidence of both Phytophthora and Pythium, disinfectants can help you combat the onslaught.
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plant nutrition
Greenhouse Product News
March 2001
John D. Lea-Cox, David S. Ross, K. Marc Teffeau and Ellen N. Varley
Management Planning —A New Paradigm for the Nursery and Greenhouse Industries
In light of increased EPA regulation of the floriculture industry, growers should start evaluating fertilizer use and greenhouse runoff. A new program developed at the University of Maryland provides an easy to use model that is applicable to most growing operations.
PDF Version
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Water Quality – Sources of Irrigation Water
Greenhouse Product News
December 2000
By Jim Barrett
You might be a grower that doesn’t give much thought to the quality of your irrigation water or you might monitor it regularly. Whatever the case may be, this month’s Grower 101, the first in a three part series, will have you taking a closer
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Irrigation
Greenhouse Product News
November 2000
Bodie V. Pennisi and Marc van Iersel
A new study shows that subirrigating
poinsettias may be
one way to get your crop the nutrients
it needs and spare
the environment;
all without the
need for leaching.
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Removing Contaminants From Recycled Water
Greenhouse Product News
June 2000
Jerry Kovach
Growers who recycle water must employ the appropriate technologies to avoid also recycling steadily higher concentrations of salts, metals, organic solids, and other contaminants that can harm both crops and equipment.
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