Standards Development
This document specifies a method for the determination of the dimensions measured of the bulk density of plugs.
This document has been developed so that there is a standard method to measure and weigh plugs (small pre-shaped growing media) and to calculate the volume and bulk density. "Plugs" are small units used for seedlings and cuttings, which are often cylindrical in shape; once the seed has germinated or the cutting has grown, the seedling in the plug might then be placed into a larger unit like a container. The volume of plugs is a useful attribute for growers and is critical for ensuring plants have sufficient growing media for their root system. The bulk density is crucial as the reporting of all chemical analyses is expressed in units of weight per volume, and the volume is determined from the weight of the sample used for the chemical analyses.
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