April 26, 2012
Subirrigation: Watering From The Ground Up
The goal for any irrigation system is to deliver water to the growing medium as effectively and efficiently as possible. Effectively means getting the right amount of water into the growing medium. Efficiently means minimizing the amount of water that is lost from the system. In order to irrigate effectively, an irrigation system must deliver water uniformly to every pot in an irrigation zone. An efficient irrigation system will either deliver water with minimal leaching and runoff or capture and reuse all the water that is not retained in the growing medium. Sub-irrigation systems are generally both more effective and efficient than top-down systems. These systems include capillary mats, troughs, flood and drain trays and flood floors. Capillary Mats The simplest form of sub-irrigation, in these systems water is delivered to a porous mat that is in contact with the bottom of the container. This allows water to move from […]
April 24, 2012
Hand Watering, Booms, Sprinklers Or Drip?
The amount of water that can be held by the substrate in a given container with a specific irrigation method is the effective water-holding capacity (EWHC). It may be desirable to maintain the moisture content of the medium below EWHC in order to regulate plant growth or reduce the risk of soil-borne diseases. Overall, it is important to irrigate thoroughly. The amount of water applied must be sufficient to re-wet the entire volume of growing medium. If the medium is dry and not enough water is applied, only part of the mix will be re-wetted. In irrigating thoroughly, the method of delivery plays an important role. With top-down irrigation, water will be pulled downward by the force of gravity. As it moves downward, some will be held by the growing medium. Usually, some water will escape from the bottom of the pot before the medium is thoroughly wet. At the […]
June 11, 2008
The term “stakeholders” calls to mind a scene from a vampire movie, with angry villagers about to go after the monster that has been terrorizing them. At the National Sustainable Agriculture Stakeholders Dialogue, sharpened sticks were not in evidence, but several pointed opinions were expressed in presentations and discussions. The conference, held Feb 29 in Washington, D.C., was organized by the Leonardo Academy and Scientific Certification Systems (SCS). About 120 attendees represented a wide range of commodity groups, processors, agribusiness interests, government agencies and environmental advocacy groups. Floriculture and nursery interests were well represented, by OFA and ANLA, as well as representatives from production and distribution companies. Joyce Latimer from Virginia Tech, Jim Barrett from the University of Florida and myself were the floriculturists among a handful of academics. The meeting opened with a presentation by Michael Arny, president of Leonardo Academy. He explained how the American National Standards Institute […]
February 20, 2018
Thrips Causing Headaches? New Research Shows Bio-based …
Dr. Rose Buitenhuis will present practical knowledge for growers to implement immediately during Biocontrols West Conference in San Diego, March 7-9.
February 20, 2018
12 New Poinsettias and Succulents for Holiday Sales, Cr…
Poinsettias and succulents are both in-demand products with today’s consumers. Here’s a look at some of the newer introductions available for retail sales in 2018 and 2019.
February 20, 2018
Top 100 Growers Survey for 2018 Is Now Open!
Operations with more than 400,000 square feet of environmentally controlled production are eligible to take the survey, which provides valuable market knowledge on how the nation's largest growers are innovating, sourcing labor, keeping up with demand, and setting trends.
February 19, 2018
All-America Selections Names Latest Variety Winner, Ann…
All-America Selections (AAS), the 85-year-young non-profit plant trialing organization, had a very busy month of January.
February 17, 2018
Gotham Greens Building Second Greenhouse in Suburban Ch…
The new $12.5 million, 105,000-square-foot greenhouse will be near the company’s first Chicago greenhouse, and will be a free-standing structure.
February 15, 2018
Boxwood Blight, Seed Your Future Among Topics Receiving…
The Horticultural Research Institute recently announced the 10 research projects that will receive funding in 2018 to investigate challenges and solutions in production, pest management, environmental stewardship, and business and marketing.
February 14, 2018
Spring Meadow Nursery Furthers Its Mission of Giving Ba…
The Spring Meadow-Proven Winners Endowment Fund through the Horticultural Research Institute has now topped $800,000, with more scholarships coming in 2018.
February 13, 2018
Don’t Let Your New Year’s Resolutions Fade …
Stuff got real in 2017, and it caused many of us to stop and reflect on the current state of the world, and how we can impact change — or at least improve our own situations. Life is too short, and we work too hard, to not use the annual renewal as an opportunity to take stock of our own personal lives, businesses, and careers, and make the necessary adjustments that will allow us to work smarter and live better. Even if you have already given up on your resolutions, perhaps you can think of January as a trial month and make February the month when you really get to work on your goals. And while I know it’s a difficult month to start on some of these changes, since you’re already immersed in the busy spring season, I promise that if you take some time to evaluate your reality […]
February 12, 2018
Calling All Designers: Enter the International Plantsca…
Applications are being accepted through April 13 for AmericanHort’s International Plantscape Awards, which recognize achievements in interior plantscape design, installation, creativity, renovation, and innovation.
February 11, 2018
Bayer Has New Turf and Ornamentals Global Market Manage…
Jose Milan will be focused on helping growers deal with regulatory issues, while promoting the environmental benefits the ornamentals industry offers.
February 10, 2018
Applications for Dümmen Orange’s Dr. P. Allen Hammer Sc…
Named for Dr. P. Allen Hammer in acknowledgment of the contributions he has made to the floriculture industry, the scholarship is intended to extend Dr. Hammer’s legacy by supporting the next generation of floriculture students.
February 9, 2018
Garden Retailers at TPIE Highlight Their Favorite Produ…
A team of garden retailers once again participated in the 2018 Tropical Plants Industry Expo Cool Product Awards.
February 8, 2018
Who Will Be Our 2018 Head Grower of the Year and Operat…
The deadline for submitting nominations is fast approaching, so be sure to let us know who you feel is most deserving of these awards!
February 8, 2018
Learn the Basics of Biocontrols for Controlled Environm…
Growers producing crops in protected structures, including ornamentals, vegetable crops, and cannabis, can learn about effective sanitation, banker plants, and buying and using beneficials and predatory insects at the Biocontrols USA West Conference in San Diego, March 3-7.
February 6, 2018
Biocontrol Track for Greenhouse Growers Reveals New Pro…
The Biocontrols West USA Conference in San Diego March 7-9 offers greenhouse growers practical knowledge on new research findings and an energetic presentation from a grower who’s taking her customers along on her biocontrols journey.