Growing Media

Growing Media, Components, Evaluation & Testing, Properties

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Phosyn Laboratory

Phosyn Analytical was established in 2001 and provides nutritional analysis of soil, plant tissue (including fruit, vegetables and grains) and water samples across the agricultural, horticultural, amenity and environmental sectors.

<a href="https://www.phosynanalytical.com.au">https://www.phosynanalytical.com.au</a>

 

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pH and electrical conductivity meters

pH and electrical conductivity (EC) meters are essential pieces of equipment for onsite testing of water and growing media. Onsite testing allows immediate decisions to be made on the nutritional status of crops, as well as being able to monitor changes in water quality.

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PH And EC Testing Method 2013

The pH measures the hydrogen ions in the growing media, while EC (electrical conductivity) measures the soluble salts in the mix. For optimal plant health, the pH and EC of the growing media should be in accordance with the plant’s requirements because different plants can have different preferred pH and EC ranges.

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PH And EC Testing Benefits 2012

The pH measures the hydrogen ions in the growing media, while EC (electrical conductivity) measures the soluble salts in the mix. The pH and EC of the growing media should be in accordance with the plant’s requirements because different plants can have different preferred pH and EC ranges.

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Calibrating pH and EC meters

pH and Electrical Conductivity meters are extremely useful pieces of equipment used to measure and monitor basic chemical characteristics of water and growing media. Regular and correct calibration of this equipment is necessary to ensure the results are as accurate as possible. The following video describes the basic procedures for calibrating pH and EC meters.

https://www.youtube.com/watch?v=DYjFVODA2mE

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Growing Media Wettability Testing Video

The ability of a growing media to take up water effectively once it has dried out is critical to the growth of plants and the ability of the media to become wet again. This is known as wettability. Testing for wettability isn't difficult and can be done at minimal cost with some basic equipment and a little bit of time. This video shows a process for carrying out a practical on-site wettability test on growing media.

youtu.be/fO5TE_RV2Y0

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Growing Media Water Holding Capacity Testing

Knowing the amount of water held within a growing media, referred to as Water Holding Capacity (WHC) of your growing media can help you manage irrigation scheduling more effectively and ensure plants have adequate moisture. Testing for Water Holding Capacity isn't difficult and can be done at minimal cost with some basic equipment and a little bit of time. This video shows a process for carrying out a practical on-site water holding capacity test on growing media.

youtu.be/eQ_DgZZZD9U

 

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Growing Media Physical Properties 2013

Air filled porosity (AFP), water holding capacity (WHC), bulk density, shrinkage, wettability and water retention efficiency (WRE) are all physical properties of growing media that influence plant growth and ultimately plant health.

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Growing Media pH and EC Testing Video

Knowing the pH and Electrical Conductivity or EC of your growing media can help you to grow better and more consistent crops. Testing procedures aren't difficult and can be done at minimal cost. This video shows a process for carrying out a practical on-site pH and electrical conductivity test on growing media.

https://www.youtube.com/watch?v=nVNnVGMh9TU

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Growing Media Nursery Paper 2010

In this month’s Nursery Paper, NGINA Industry Development Officer, Michael Danelon provides an overview of growing media and the importance of selecting the most appropriate media to achieve optimum plant performance.

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Growing Media Air Filled Porosity Testing Video

Plant roots require air as well as water to remain healthy. The amount of air held within a growing media is referred to as Air filled porosity or AFP . Testing procedures for AFP aren't difficult and can be done at minimal cost with simple equipment built from readily available materials and a little bit of time. This video shows a process for carrying out a practical on-site air filled porosity test on growing media.

https://www.youtube.com/watch?v=iBAHYXWtOgc

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Coir properties

Coir, coir fibre pith or coconut fibre is a one hundred percent natural, sustainable and renewable product. Coir is a ‘peat like’ byproduct produced from the processing of coconut husks, and is composed of the fibrous material found between the hard, internal shell and the outer coat of a coconut. Coir is lightweight, retains moisture and is an affordable growing media substrate or component for adding to growing media blends, producing stronger, healthier and more fibrous root systems.

youtu.be/wl89UXi-hY4

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Coir or coconut fibre

Coir is a ‘peat like’ byproduct produced from the processing of coconut husks. Its characteristics are described, including water holding capacity, wetting and rewetting capacity, air-filled porosity, cation exchange capacity and physical stability in containers.

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Chemical Properties Of GM 2010

Understanding the chemical properties and their possible interactions is actually quite complex. Hence this article will only touch on a few key points, other key areas such as the buffering capacity of mixes will not be covered in this article.

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Calibrating pH and EC meters

pH and Electrical Conductivity (EC) meters are extremely useful pieces of equipment used to measure and monitor basic chemical characteristics of water and growing media.

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Calculating Air Filled Porosity 2010
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Air Filled Porosity Testing 2013

The air filled porosity (AFP) of a growing media is the percentage of its volume that is air after being saturated with water and just after it has stopped draining. This is the method used in the Australian Standard for Potting Media for testing AFP.

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1. AN INDEX OF GROWING MEDIA TECHNICAL ITEMS