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Proceedings of the International Plant Propagator's Society

Vol. 30

Title:
COMPARISON OF POTTING MIXES FOR MACADAMIA NUT TREES

Author:
T. Thochoulias

pp: 608-611

Abstract:
Nine month old composted macadamia husks were tested with sand, soil and sawdust in a combination of potting mixes.

Sand and husks increased macadamia seedling height by 73% after one year in 10 containers while sand and sawdust depressed growth by 39% compared to soil and sand.

Dry weight of leaves, stems, tap roots and fibre roots at the end of the experiment showed high dry matter in the leaves (61%) compared to Pinus radiata (49%) The shoot to root ratio was 4.6 compared to 21 recorded for avocados.

The sand and husks treatment (11 v/v) would reduce the time for macadamia seedlings to reach graftable size by 9 months compared to sand and soil( 11 v/v).

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