Greenhouse Management - Greenhouse Management is the …
网页Greenhouse Management is the leading source of business management information and industry research serving greenhouse growers in the U.S. and Canada.
Cooling and Ventilation - Greenhouse Management
网页2011年6月9日 · When the regular ventilation system is unable to provide sufficient cooling for greenhouse temperature control, additional cooling is needed. Two cooling systems, the pad-and-fan and a fog system, are commonly used in greenhouses. Both make use of the cooling effect resulting from the evaporation of water. The process of evaporation …
Cooling your greenhouse with fog - Greenhouse Management
网页2018年5月30日 · Fog generators with high pressure pumps, filters and control units are available in several capacities. Fog is an alternative evaporative cooling method to the fan and pad system. Its advantages include more uniform cooling throughout the greenhouse, higher efficiency and lower maintenance costs. It also provides a method for cooling ...
In review: greenhouse film plastic properties
网页2021年4月19日 · Thermicity. A plastic film is considered an infrared film (IR) if less than 25% of the heat generated within the greenhouse is allowed to escape. The lower the percentage, the lower the winter heating bill. Regular greenhouse grade polyethylene film allows 30% to 60% of the IR heat to escape. Plastic manufacturers have found that mineral based ...
Choose the right plastic film for your needs
网页2010年5月27日 · The life of polyethylene film is limited due to degradation processes induced by sunlight and heat. Copolymer poly is a low-cost material that is good for one season. It is a good choice for seasonal greenhouses, overwintering structures and high tunnels. Avoid construction grade material that has less strength.
A strong and viable market - Greenhouse Management
网页2020年4月20日 · It’s a strong and viable market. Breeders continue to develop innovative lines and varieties. New 2021 selections are coming from key players including Beekenkamp, Dummen Orange, Koppe and others. Though a longtime seed breeder, the notable newcomer to vegetative cultivars is Syngenta, offering two new series.
Overwintering can be easier than you think - Greenhouse …
网页2007年11月30日 · This technique creates a microclimate 8°F to 10°F warmer than the air above the blanket inside the structure. Place the thermoblanket over the plants only during extremely low temperatures to avoid excessive moisture buildup. Maintaining plants above freezing. Heated greenhouse or poly-covered house with roll-up sides.
Greenhouse maintenance tips - Greenhouse Management
网页2021年11月29日 · To keep everything operating smoothly, Neve says the operation’s growers do frequent water testing to make sure quality is up to par for production. Another key is checking every other component – irrigation equipment, substrate measurements, etc. – to make sure they are where they should be. Another key area is the shipping area, …
The ABCs of PGRs in vegetables - Greenhouse Management
网页GM Staff. March 10, 2015. According to our 2014 State of the Industry Report, 43 percent of growers project edibles to be the category with the biggest increase in production this year. Greenhouse Management recently spoke with T. Casey Barickman, Ph.D., about the use of plant growth regulators (PGRs) in vegetable transplant production.
Scouting in the greenhouse
网页2021年5月25日 · Scouting should begin as early as possible in a growing cycle. For those bringing plant material such as seedling plugs and rooted cutting liners, plant material should be inspected immediately upon receipt; no plant should enter the greenhouse without this check. A small quarantine area, isolated from the main production area, is useful to ...
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