| http://www.w3.org/ns/prov#value | - Yet another object of the invention is to provide a polymerized soil plug for growing a plant therein from seed including a body of spongy open-celled hydrophilic polymer, a quantity of particles of soil mix distributed throughout the body of spongy polymer, and a quantity of foam-forming synthetic organic plastic resin being reacted in situ to form the body of spongy open-celled hydrophilic polym
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