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Horticulture Monitoring Applications

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    Gas Sensing for Horticulture

    Controlled Environment Horticulture is a vast topic, and has been utilised in varying forms for centuries. Excavations of the city of Pompeii showed remains of early greenhouses dating back to AD79; and the modern greenhouses are thought to originate in the thirteenth century in Italy. Most people recognise the use of greenhouses for growing flowers and vegetables, whether in their own garden, at garden centres or on a commercial basis. Indeed most people will be conversant with irrigation systems that are used to supply water to such greenhouses and the use of heaters to control the temperature and thereby extend the growing season. However, modern systems have been developed for Controlled Environment Horticulture that are designed to further optimise the growing conditions; with sophisticated computer controlled sensors, combined with advanced software models, that can control not only the temperature, light level and water, but also the level of nutrients, humidity, pH and CO2

    By Edinburgh Instruments Ltd based in Livingston, UNITED KINGDOM.

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    Fertigation Monitoring /Nutrient Concentration Monitoring

    We have optimized six and four ion probes for horticultural applications. For growers, these products offer a “lab-in-hand” solution — a quick and affordable way to maintain the proper nutrient balance required for better yield, improved flavor and color, greater disease resistance and longer shelf life. Controlling the concentration of nutrients in liquids is a vital step in the fertigation process. Today, nutrient levels are tested daily, most commonly by measuring pH and EC, and dispatching samples to offsite labs for analysis. This traditional testing protocol is time-consuming and costly, and delays access to information on potential yield-threatening nutrient levels.

    By CleanGrow based in Vacaville, CALIFORNIA (USA).

  • Measuring Ion Concentrations in Hydroponics Samples

    Required Apparatus:

    • Aptisens Digital or Mobile Multiple Ion Kit

    Required chemicals:

    • Aptisens multiple ion conditioning solution
    • Aptisens multiple ion HORTICULTURE calibration solutions
    • Deionised water

    Sample Preparation:
    Typically, it is not a requirement to filter a hydroponics sample.

    Calibration:
    Before use the multiple ion probe must be conditioned in Aptisens multiple ion conditioning solution. Ensure the correct calibration solutions for a three-point calibration are set up on the Mobile meter or MeterLink. Follow the instructions for calibration and proceed to take a sample reading when the calibration data is ‘very good’ or ‘good’ for all ions.

    Sample Reading:
    Place the probe in the aqueous extract and ‘Take a Sample’ reading. The concentrations for each ion will be displayed in ppm or mmol / L.

    Probe Care:
    After taking your reading be sure to remove the sensors from the solution as quickly as possible, rinse with deionised water and replace the cap of the probe.

    By Aptisens based in Little Island, IRELAND.

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