Jackson BE 2009 Pine tree subsrate: an alterntative and renewable substrate for horticultural crop production. in ACTA hort
Brian Jackson's early work on using de-limbed logs (no needles, but does contain small volumes of bark) as a wood-based substrate for ornamental plant production. BE Jackson and RD Wright 2009. ACTA Hort. 819:265-272.
Jackson and Wright 2009 Pine tree subsrates in ACTA hort.pdf
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