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You are here: Home / Picture Tutorials, Videos and maintenance information / PMS Guidelines For Selected Agricultural Crops

PMS Guidelines For Selected Agricultural Crops

Warning!Important Safety Information
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Considerable research has been done on water relations of agricultural crops. Much of this data has not been compiled or summarized. PMS Instrument Company has attempted to summarize available information for a variety of crops. The striking similarity of the plant responses to moisture stress has led to the development of Tables I and II. Crops were divided into three stress categories, Low, Medium and High Stress Crops (Table I). Table II indicates how plants in each stress category differ in response to PMS (plant moisture stress). This preliminary classification will be further refined as additional information becomes available, but these tables at least provide a starting point for using the pressure chamber to manage crop irrigation. Refinements are available for some crops at this time (i.e., cotton, grapes, avocado) and more will be forthcoming.

Tables I and II (below) have been prepared using both research data and field experiences of growers. We are continuing to collect data on this project and welcome information from all sources

Crop Information PMS Instruments

Crop Information PMS Instruments

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More Resources:

  • Instruments
    • Instrument Quick-Connect Couplers
    • Filling the Model 610 internal Portable Tank
    • Filling the Model 615, Model 615D or Model 1515D Internal Tank
    • Filling the Portable Tank
    • Sealing a sample in the Compression Gland Cover
    • Setting the Rate Valve
    • What it should look like when it’s all hooked up
  • Making the Measurements – Plant Moisture Stress
    • Interpreting Data
    • Making the Measurement of the Plant Sample
    • Measuring Leaf Water Potential in Wine Grapes
    • Measuring Stem Water Potential (SWP)
    • Measuring Stem Water Potential in Almond Trees
    • Measuring Stem Water Potential in Prune Trees
    • Measuring Stem Water Potential in Walnut Trees
    • PMS – Meaning and Importance
    • Stress levels, crop tables and information
    • Using a Pressure Chamber with Almond
    • Using a Pressure Chamber with Walnuts
    • Using a Pressure Chamber with wine grapes
    • Using a Pressure Chamber with Prunes
    • What kind of plants can be measured?
    • When to make measurements
  • Accessories to Nitrogen Gas Units
    • Installing the Almond Compression Gland Gasket and Insert
    • Installing the Grass Compression Gland
    • Using the Grass Compression Gland
    • Pressure Regulators: Do I need one?
    • Using the Grass Compression Gland with corn
    • Sealing a sample using inserts, gaskets and tools
    • Standard Sealing System

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