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Fertilization in Greenhouses: an Introduction
Nutritional problems are among the most common problems in greenhouses and can lead to serious economic losses. |
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Irrigation Control for greenhouse and nursery crops.
Water is becoming an increasingly scarce resource and there is increasing pressure on the greenhouse industry to use water more efficiently. We are working on using soil moisture sensors to determine when irrigation is needed and how much water needs to be applied. |
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The use of recycling subirrigation systems in greenhouses.
The goal of this research was to develop simple and reliable guidelines to enable growers to manage recirculating irrigation systems. This includes the development of guidelines for pH and electrical conductivity of the growing medium. |
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Whole plant CO2 exchange.
By measuring the carbon exchange rate of whole plants continuously, plant growth can be determined very accurately and non-destructively.This technique is currently being used to determine the drought tolerance of bedding plants. Other research areas include the estimation of growth respiration and maintenance respiration throughout plant development, and light, temperature, nutrition, and atmospheric CO2 concentration effects on plant growth and carbon use efficiency. Whole plant CO2 exchange measurements have also been used to determine phytotoxic effects of pesticides, and to quantify the effects of azalea lace bugs on the growth of azalea plants. |
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Water Requirements of Greenhouse and Nursery Crops
There is increasing pressure on the greenhouse and nursery industries to use water more efficiently. For many years, it has been common practice to water until water runs out of the bottom of the pots, and up to 50% of all the water may be lost this way. By watering according to the needs of the plants, this can be prevented. |
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Organic Blueberry production in High Tunnels
Organic blueberries receive a high price on the market but their price does fluctuate widely throughout the year due to variations in supply. Growers who can gain an edge on the market by having their berries ripen a month early or more will have a tremendous advantage in the price they can receive for their product. Therefore, technologies that induce early flowering in blueberries are currently being explored for their feasibility. Click HERE to see the information presented at the Organic / High Tunnel Workshop in May, 2009. |
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