meirs Apr 28, 2013:

Isn't it plain "density" ? If it is measured in plants per dunam/acre/hectare ? BTW, dunam is known only in these parts of the world - the density figure must be converted to units with which the reader is familiar - acres or hectares - depending on the target country.

Textpertise Apr 28, 2013:

Could it be a stand of plants? A stand of plants is a loosely described arrangement of plants as in a field or an orchard. See, for example at the very top of page 2 of the following document:
http://ag.montana.edu/msga/Seed Standards/pre-variety standa...
where it says:
"IV. Unit of Certification
An individual plant, clone, or stand of plants (field or orchard) may be certified in producing Tested, Selected, or Source-Identified seed. Seed production zones and/or breeding zones may be defined as a unit of certification for Selected and Source Identified seed."
If you feel your context admits this definition, I will enter it as a possible answer.
P.S. Hardcopy Alcalay dictionary defines עומד (spelt without the ו) as standing place, stand, position.
More examples of this term may be found here:
http://tinyurl.com/cpsqoxs