July 13, 2011
5 Tips For A More Energy-Efficient Greenhouse
Scott Longfellow, owner of Longfellow’s Greenhouses in Manchester, Maine knows a thing or two about dealing with cold winters. With two acres of greenhouse production, he also deals with many of the same issues of finding ways to conserve energy that other small to mid-size growers do. Longfellow offered several tips for finding energy improvements that can benefit your greenhouse operation during heating season – and in the summer too. 1. Get an energy audit. Longfellow had one performed as part of a USDA grant process, but recommends doing an audit whether it’s required or not. “You’ll find a whole list of things you’re not paying attention to,” he says. “It cost us about $1000 and it was money well spent.” 2. Adjust your boiler temperatures in the summer. “You don’t want to shut it down, but there’s no need to keep the boiler running at 210-220 degrees all summer […]
July 13, 2011
Solar-Powered Greenhouse Heating
For an industry that runs on sunlight, solar power has been a somewhat elusive development. Cees Kattenberg says Sika Energy USA has a potential solution that may interest growers. The Sikaplex Solar System uses a special curved lens in the peak of a greenhouse that concentrates light into a single line at a temperature of nearly 400 degrees. That light is focused on a water line running just beneath the lens. Water running through the line is heated to 190 degrees and stored in an insulated tank. The line is also warmed by heat rising from the greenhouse. The water can be used for heating in the winter or absorption cooling in the summer, he says. Kattenberg says shadows aren’t a problem because the lens diffuses the light, leading to only 1 to 2 percent loss. The system works best with glass or acrylic coverings. The system costs around $200,000 […]
July 13, 2011
A Big Fogger For Big Greenhouse Spaces
As growing spaces have gotten bigger and bigger in recent years, traditional spray methods have become less efficient. Dramm is addressing the needs of larger growing operations with its new TracFog mist blower system. TracFog is designed for very large spaces. It is mounted to a tractor by a three-point hitch and is PTO driven and requires 9 HP to operate. The PTO drives a blower/compressor creating ultra-fine particles and rapidly applies all chemical formulations as a fog. The fog created from a full 100 gallon tank travels long distances and the system can treat up to 2 million square feet. The TracFog can treat an acre of greenhouse in less than 15 minutes. Directable nozzles are adjustable to work with any crop, and the system can be used outdoors as well as in the greenhouse.
July 12, 2011
Mechanized Basket Elevator Makes Loading Conveyors Easier
Need some help loading those high hanging basket systems? AgriNomix’s Mechanized Basket Elevator alleviates some of the physical stress and danger in loading hanging basket conveyors, lifting baskets from the lower position to the upper position. Crews can work more efficiently. Capacity for the basket elevator is 500 to 1,300 baskets per hour, but custom heights can be ordered. AgriNomix also displayed the Trike Horticulture Forklift, which is different because of its tires. Widely spaced front wheels and closley spaced rear wheels keep rutting to a minimum, and will drive over even difficult terrain smoothly without sinking. A programmable hands-off pot spacing option adds to the machine’s features. Load capacity is 1,000 kg. with a Kubota 3-cylinder diesel engine.
June 15, 2011
Greenhouse Cooling, Ventilating & Shading
The improved Poly-Vent natural ventilation system from Poly-Tex is an alternative to rack-and-pinion vents and rollup curtain systems. The new frame has improved water drainage and is designed to be mounted to most greenhouse sidewalls without modification. Poly-Vent operates using only small blowers that can be thermostatically controlled. Single-stage allows growers to fully open or close off their ventilation while two-stage gives them the ability to select different temperatures at which the top and bottom will open or close. Combined with aluminum-wall housing, an aluminum shutter and a vinyl-coated wire guard, AL aluminum fans from American Coolair provide years of service. The aluminum blades of fans are bolted to a cast aluminum hub, which also serves as the fan pulley. Power is applied through V-belts directly to the propeller with the blade load concentrated directly over the fan bearings, eliminating overhung bearing load. It is available with single- or two-speed […]
June 9, 2011
Netafim’s More Sustainable Dripline
Netafim USA’s high performance Techline CV dripline is now manufactured with recycled materials, giving Netafim the opportunity to earn LEED credits on landscape installations. Techline CV is used in a broad range of applications to irrigate turf, trees, shrubs and bedding areas. The flexible tubing features two PSI check valves in each dripper for equalized application of water throughout the system (all drippers turn on and off at the same time). Check valves also prevent low emitter drainage with elevation changes up to 4 1/2 feet. Techline CV’s dripper design offers continuous self-flushing throughout the line, not just at the beginning or end or a cycle. Pressure compensation allows equal amounts of water to be delivered over a broad pressure range (14.7 to 70 PSI), and a physical root barrier protects the internal system from root intrusion without chemicals. Techline CV can be installed above ground or sub-surface, and it delivers water directly […]
June 2, 2011
Greenhouse Equipment: Improving Your Efficiencies
Dramm The new 350PL Screen-Aire updates Dramm’s popular nursery nozzle by reducing the weight and cost. Made from durable, lightweight POM plastic and stainless steel screens, the 350PL offers high flow with a soft, aerated pattern. Perfect for watering containers quickly, the aerated flow will not disturb soil or fertilizer in the container. The air-intake holes entrain air to soften the flow and add much-needed oxygen to the water for better plant growth. Orival The ORG series of automatic, self-cleaning, line pressure-powered water filters are available in sizes from 1.5- to 8-inch single units that can handle flow rates up to 1320 gpm. Units can be installed in parallel to handle larger flow rates. Fine screens are available down to 1500 mesh in a variety of constructions, including standard stainless steel mesh, multi-layer sintered stainless steel and wedgewire. Growing Systems New boomless monorail traveling irrigators are custom made for any […]
April 25, 2011
Counting On Carts
Keeping track of carts and making sure there is enough on hand for shipments when spring gets rolling is an issue for wholesale growers of all sizes, whether they serve large retailers or independent garden centers. Take Robin Waldrop Sr. of First Stage Greenhouses near South Bend, Ind., who serves garden centers within a 150-mile radius. He takes good care of his carts and hates to see them swapped out with old rusty ones in exchange on a return trip. “The problem I’ve run into geographically is other growers using the same type of cart as us,” he says. “It’s tough to ship new carts out and get old ones back, even though they are the same type. We have all our wholesale customers unload them while our drivers wait. It’s worth it for me to pay my drivers to wait rather than wondering where my carts are, or worse […]
April 21, 2011
Dramm Introduces 350PL Screen-Aire Nozzle
[imageviewer] The new 350PL Screen-Aire updates Dramm’s popular nursery nozzle by reducing the weight and cost. Made from durable, lightweight POM plastic and stainless steel screens, the 350PL offers high flow with an ultra-soft, aerated pattern. Perfect for watering containers quickly, the aerated flow will not disturb soil or fertilizer in the container. The air-intake holes entrain air to soften the flow and add much needed oxygen to the water for better plant growth. For more information about Dramm, visit www.dramm.com.
April 21, 2011
Spectrum Hires Horticulture Specialist
Rob Knapp joins Spectrum Technologies as the new horticulture specialist. Knapp’s responsibilities include consulting, educating and promoting research to our nursery, greenhouse and vegetable industry segments. Knapp holds a bachelor’s of science in plant and soil science from the Southern Illinois University-Carbondale. He has more than 20 years experience selling soilless growing media, fertilizers and pesticides to nurseries and greenhouses. Learn more about Spectrum online at www.specmeters.com.