Economical, nonpolluting solutions to greenhouse growing found

A recent study of an ancient growing medium has implications for advancing growth and yield of greenhouse crops grown in soilless conditions.

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<p><a href="http://www.physorg.com/news113054177.html">Economical, nonpolluting solutions to greenhouse growing found</a></p> <p>A recent study of an ancient growing medium has implications for advancing growth and yield of greenhouse crops grown in soilless conditions.</p>