March 21, 2014
Greenhouse Heating Basics From The National Greenhouse Manufacturers Association
Here's a Q&A from the National Greenhouse Manufacturers Association that might help you improve your greenhouse.
February 25, 2014
Behind The New Greenhouse Projects At Van de Wetering And Kurtz Farms
Read about the projects VB Greenhouses worked on at Van de Wetering Greenhouses and Kurtz Farms.
January 21, 2014
Exclusive: Danziger Is Building A State-Of-The-Art Stock Farm In Guatemala
The breeder is constructing almost nine acres of state-of-the-art greenhouses near Barbarena, Guatemala, to bring its stock farm closer to the U.S. market. The first phase of construction was complete in February 2014.
December 2, 2013
Greenhouse Glazings FAQ: National Greenhouse Manufacturers Association Offers Advice
The National Greenhouse Manufacturers Association has taken on several common questions about greenhouse glazings in this FAQ.
October 11, 2013
Purchasing A Greenhouse: Advice From The National Greenhouse Manufacturers Association
There are some common questions growers ask about structures. NGMA collected answers to the most frequently asked questions.
October 4, 2013
Top 10 Mistakes Greenhouse Growers Make When Planning An Expansion
From financing to production concerns, don't make these mistakes when planning additional greenhouse space.
September 13, 2013
Comparing LED Lighting To High-Pressure Sodium Lamps
Cuttings of vegetatively propagated bedding plants are frequently rooted in late winter and early spring to meet the spring and early summer market demand for flowering bedding plants. However, this is also the time when dirty and old glazing material, interior superstructures, and hanging baskets suspended above benches reduce already seasonally low ambient outdoor daily light integrals (DLIs) inside the greenhouse. Increasing the DLI during propagation has been shown to improve growth and quality of rooted cuttings, as well as reduce time to flower after transplanting. While maintaining clean glazing material, minimizing superstructure and reducing the density of hanging baskets may increase greenhouse DLI, the only way to appreciably increase DLI is to provide supplemental or photosynthetic lighting. Light-emitting diodes (LEDs) are solid-state, semi-conducting diodes that can emit light from ~250 nm to ≥1000 nm. There are several features of LEDs that make them attractive alternatives to high-pressure sodium (HPS) […]
August 23, 2013
Structural Design Manual From National Greenhouse Manufacturing Association Offers Construction Guidance
The manual guides designers through the building code provisions for production and commercial greenhouse structures. It includes the provisions for roof live load, snow load, wind loads and seismic and collateral loads as contained in the building code or reference standards. Structural design methods for roof framing systems, the support columns and the lateral bracing systems are also detailed. This chapter looks at bracing, connection materials, roof support systems, trusses, arches, rigid frames, gutters, ridges, purlins and more. It also includes two design examples. Click here to visit the NGMA Downloads page and click on the dropdown menu under Design Manuals.
August 15, 2013
Time to Upgrade Your Greenhouse Operation?
Unhappy plants, discontented workers and high production costs are all signs that it might be time for some changes to your greenhouses, says A.J. Both, associate extension specialist in the Department of Environmental Sciences at Rutgers University. â€œAny or all of these conditions can be a good reason to investigate and implement upgrades,â€� he says. Wasted Energy Energy is one of the costliest aspects of running a growing operation, second only to labor expenses. According to a fact sheet produced by Both and Michigan State Universityâ€™s Erik Runkle, approximately 65 to 85 percent of the energy consumed in greenhouse production goes toward heating, while electricity and transportation make up the remainder. In older greenhouses, itâ€™s common for air leaks to reduce efficiency, leading to higher energy costs. Both and Runkle recommend inspecting your current houseâ€™s glazing, walls, doors, fans and vents for leaks. Pay close attention to the areas around […]