March 29, 2017
How You Can Embrace Greenhouse Food Production With Confidence
Maintaining balance, learning continuously, and seeking support will help make your transition into producing greenhouse food crops a smooth one.
March 26, 2014
Producing Hydroponic Culinary Herbs
Switching over to tomato, cucumber or pepper production can be a big change for any greenhouse. These crops have long production cycles and may not fit as easily into windows of opportunity between ornamental production cycles. However, culinary herbs are a relatively quick and can easily be grown in simple hydroponic systems.
September 12, 2012
Produce High-Quality Rooted Cuttings
Whether you are a propagation specialist or are rooting cuttings for your own in-house production, the goals of propagators are the same — to efficiently produce high-quality rooted cuttings. In order to meet the spring and early summer market dates for flowering bedding plants, cuttings are typically rooted in mid- to late-winter and early spring when the outdoor daily light integrals (DLIs) are at seasonally low levels. The DLI inside a greenhouse is often further reduced as a result of glazing material and interior structures, as well as hanging baskets suspended above benches to maximize production space. Research has recently shed some light on the impact of light levels during propagation of New Guinea impatiens and petunias. However, the number of species and cultivars grown from cuttings is quite large and diverse. Therefore, we wanted to better understand the impact of DLI during propagation on growth and quality of several […]
September 12, 2012
Reduce Flowering Time
This is the second article in a two-part series looking at the effects of light during cutting propagation. While the first article focused on the effects of daily light integral (DLI) during propagation of rooted cuttings, this article will focus on finished plants. We wanted to see how DLI during propagation affected growth and flowering after transplant, as well as identify how the DLI during propagation interacted with the DLI during finishing to influence crop timing and quality. Study 1: Lighting During Propagation Cuttings of Angelonia ‘AngelFace White,’ Nemesia ‘Aromatica Royal,’ Osteospermum ‘Voltage Yellow,’ and Verbena ‘Aztec Violet’ were stuck in 105-cell trays and placed in a propagation greenhouse with an air and substrate temperature set point of 73°F and the average DLI was maintained at about 5 mol•m¯²•d¯¹. After seven days, cuttings were placed under a range of DLIs, from 1.2 to 12.3 mol•m¯²•d¯¹, achieved using supplemental light from […]
August 14, 2012
When Fertilizing, Don’t Neglect The Root Zone
Bedding and potted plants are traditionally fertilized daily or several times a week with water soluble fertilizer (WSF) applied in the irrigation water. With WSF, the fertilizer components are in a form that can be directly absorbed by the plant. This also means the fertilizer components can immediately impact the soluble salts and the pH of the substrate. WSF are also in a form that can readily be leached from the root zone. When using controlled-release fertilizers (CRF) the nutrients are primarily held within the CRF prills and are not available for plant absorption until they are released slowly over time. Thus, when a CRF is added to the substrate, its effects on pH and salts are not immediate. Instead, they occur slowly over time as nutrients diffuse from the prills. Use the results from three studies to better manage the root-zone pH and electrical conductivity (EC) when using CRFs. […]
July 18, 2012
High Tunnels: Grow Better Bedding Plants In Cold Weather
Bedding production begins in mid- to late-winter and early spring in the northern half of the U.S., when outdoor air temperatures and light are at seasonally low levels. During this time, greenhouses must be heated to maintain desirable production temperatures. The costs involved can be huge. Energy for heating in northern climates accounts for 10 to 30 percent of the total operating costs of commercial greenhouses. So it makes sense to find alternative strategies. Our research shows that high tunnels are a viable alternative for plant producers. High tunnels are an unheated polyhouse or hoop house covered with a single layer of plastic, although a double layer of plastic or additional covering inside may be used. In floriculture, high tunnels are most commonly used in cut-flower production for season extension and protection against frost, rain and wind. They are also used to produce and overwinter containerized herbaceous and woody perennials. […]
January 6, 2012
Height Control For Easter Lilies
Flurprimidol drenches have been shown to successfully control height of oriental lilies and Dutch bulbs such as hyacinth, narcissus and tulips, but there is no data that shows how effective flurprimidol drenches are on Easter lilies. Researchers decided to find out.
July 25, 2011
Graphical Tracking: The Basics Of Monitoring
Figure 2. Long, thin and weak poinsettia stems due to tight spacing (shade avoidance response) on the greenhouse bench. Scroll down to see the rest of the figures for this story. Controlling height is a major challenge for growers with most floriculture crops. Unfortunately, not only do environmental growing conditions vary from year to year due to the weather, but growers must continuously adjust their height management strategies due to the introduction of new cultivars, shipping dates and container sizes. We are all aware of the consequences of crops that do not meet or exceed maximum height requirements: poor quality and damaged plants, higher shipping and labor costs and, ultimately, shrink. So how do you make decisions related to height control in your greenhouse? Relying on your plant growth regulator (PGR) crop notes from last year may not be the best strategy to follow. The first step in making educated […]
June 14, 2011
Monitoring The Greenhouse Environment
How do you make decisions related to crop production in your greenhouse? The most common decision-making aids are notes made during previous production seasons and reacting to problems that arise. While using notes and reacting to situations as they arise are commonplace, each season and year is going to be different than the previous one. The first step toward making educated decisions and avoiding problems is to monitor factors that affect your crop production. Constant monitoring can help growers make decisions and help manage the causes of problems as opposed to treating symptoms. This is the first article in a series focused on monitoring the greenhouse environment, plant growth and development, substrate pH and EC and water quality, and greenhouse pests and diseases. These articles will provide concepts and ideas to help you develop a comprehensive greenhouse monitoring program. This particular article will focus on monitoring the greenhouse environment. Because […]
October 26, 2010
Non-Chemical Height Control
[imageviewer] As part of the movement toward sustainable production of greenhouse crops, many growers are looking for non-chemical alternatives to control plant height and size. Fortunately, there are numerous options available. These options include genetic selection, planning and graphical tracking, environmental manipulation of light quality and air temperature, cultural manipulation of irrigation and mineral nutrition and mechanical control. Genetic Selection When trying to control plant size, the first step is to select naturally compact or dwarf cultivars. Many breeding companies are constantly introducing new cultivars of popular genera and species with a more compact growth habit (Figure 1). This benefits growers by providing them with plant material that can be finished at a smaller size than their standard-sized counterparts. Planning & Graphical Tracking After selecting the proper genetics for production, the next step in controlling crop height is to put your pen to the paper (or finger to the keyboard!) […]
June 28, 2017
How Will Potential Cannabis Legalization Affect You? Co…
The Canadian government released a report late last year that highlights what cannabis legalization might mean for producers.
June 28, 2017
5 Factors to Consider When Expanding Into Cannabis
When you take a long-term approach to planning, budgeting, and equipping an indoor growing operation, you build more efficiency — and profits — into it.
June 27, 2017
Steve Garvey is a Finalist for the 2017 Head Grower of …
Winner of the Excellence in Quality Award, Steve Garvey has become relentless in looking for the next new thing to improve quality in every aspect of production, from growing to shipping to marketing.
June 27, 2017
New Pilot Project for Offshore Unrooted Plant Cutting C…
Four breeders — Ball Horticultural Co., Dümmen Orange, Proven Winners, and Syngenta Flowers — will participate in the initial pilot, which will include greenhouse growing operations in six Latin American countries.
June 25, 2017
Consumers Revel in Gardening at Metrolina Greenhouses’ …
Metrolina wanted to promote plants, gardening, and creating a sense of community, so it decided to host Dig & Swig events at a local brewery.
June 24, 2017
Green Fuse Botanicals New Vice President is Focused on …
Jim Devereux, who will oversee production, sales, and marketing for Green Fuse, says he hopes to bring genetics to the market that break from traditional production methods for finished growers.
June 23, 2017
Greenbelt Microgreens is a Finalist for the 2017 Operat…
Winner of the Excellence in Innovation Award, Greenbelt Microgreens is constantly staying on top of the latest trends in technology,
June 22, 2017
Japanese Breeder Ushio Sakazaki Wins Medal of Excellenc…
From Supertunias to Superbells, this innovative Japanese breeder has used wild genetics to create game-changing plants that help consumers reconnect with the beauty of nature.
June 21, 2017
New Tool from Koppert Provides More Effective Thrips Ma…
A newly patented sachet for the predatory mite Amblyseius swirskii is resistant to both low and high levels of humidity, helping growers combat thrips infestations.
June 20, 2017
Dümmen Orange Enters Calla Market With Acquisition of G…
Golden State will continue to supply the market through September 2018, at which time Dümmen Orange will assume supply and delivery of much of Golden State’s product line.
June 20, 2017
Sign Up For The Luxflora Flower Run At Cultivate’17
The5k walk/run race, sponsored by Luxflora, is an opportunity for industry members to network, build relationships, have some healthy fun, and start off Cultivate’17 with a flourish.
June 19, 2017
IGC Show Features Talks on How to Cash in on the Buy Lo…
This year’s event, which takes place Aug. 15-17 in Chicago, also includes a free workshop on what you might do when starting your business over from scratch.
June 18, 2017
Protect Your Employees from Heat-Related Illnesses with…
The National Institute for Occupational Safety and Health and the Occupational Safety and Health Administration have released an updated app for smart phones that can help workers stay safe when working outdoors in hot weather.
June 17, 2017
Visser, Ball Partner on New Sticking Technology for Cut…
The new AutoStix system is designed to provide better consistency and uniformity with shipped cuttings, easier and more reliable counting, automatic transplanting, and optional buffering in the peak season.
June 16, 2017
Five Guidelines to Investing in Software for Your Green…
Any software improvement you make should make sense for your team and be worth the investment.
June 15, 2017
Greenhouse Grower’s 2017 Evening Of Excellence Will Rec…
Registration is now open for the 2017 Greenhouse Grower Evening Of Excellence, which takes place Monday, July 17, during Cultivate’17.