EFFECT OF CARBON DIOXIDE ON PROPAGATION OF SOFTWOOD, CONIFER AND HERBACEOUS CUTTINGS

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Abstract
Cuttings in an atmosphere enriched with CO2 or in carbonated mist rooted faster and produced more roots per cutting and more fresh and dry weight than the controls. Within a month, 88% of the Juniperus horizontalis cuttings rooted, compared with [Formula: see text] to 3 months for similar or lower rooting percentages in non-carbonated mist. The results with Thuja, Chrysanthemum, Potentilla and Weigela species indicate that additional CO2, either in the atmosphere or in carbonated water, produces larger and more vigorous rooted cuttings.

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