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- Author or Editor: R. Sheldrake Jr. x
- Journal of the American Society for Horticultural Science x
Abstract
‘Cardinal Sim’ carnations were grown for 2 years in 6 media combinations that were supplemented with 2 particle sizes of vermiculite. The addition of vermiculite resulted in significantly higher K levels in carnation foliage the first year than in control plants. The positive effect of vermiculite persisted through the second year but at a lower level. A combination of 1-1-1 by volume sphagnum peat moss, perlite and #4 vermiculite was as good a growing medium as the control soil when compared on a total production and quality index basis.