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Proceedings of the International Plant Propagator's Society

Vol. 29

Title:
USE OF SIERRA BLEND PLUS 100­DAY OSMOCOTE ON NATIVE PLANTS

Author:
Gordon Lamb

pp: 567

Abstract:
When Sierra Blen Nursery Mix (19–6–10 + iron) was initially marketed in Perth, Australia it was inferred that we need not use a primary source of nitrogen to counteract drawdown on a sand and sawdust mix. We decided to conduct our own trials to determine if this was the case, using 160 plants in 8 groups:
Group I. 4 pounds U.F.38 lime, trace elements, 5 pounds 280-day Osmocote. (Control)
Group 2. 4 pounds U.F. 38 lime, 5 pounds Sierra Blend
Group 3. 4 pounds U.F. 38 lime, 4 pounds Sierra Blend, 1 pound 100-day Osmocote
Group 4. 4 pounds U.F. 38 lime, 3 pounds Sierra Blend, 2 pounds 100-day Osmocote
Group 5. 4 pounds U.F. 38 lime, 4 pounds Sierra Blend, 2 pounds 100-day Osmocote
Group 6. 4 pounds U.F. 38 lime, 2 pounds Sierra Blend, 2 pounds 100-day Osmocote
Group 7. 4 pounds U.F. 38 lime, 2½ pounds Sierra Blend, 2 pounds 100-day Osmocote
Group 8. 4 pounds U.F. 38 lime, 1 pound Sierra Blend, 2 pounds 100-day Osmocote

The plants selected for experimentation were Grevilea biternata, G. robusta, G.

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