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Proceedings of the International Plant Propagator's Society

Vol. 27

Title:
THE USE OF SAWDUST AS A GROWING MEDIUM

Author:
Peter E. Albery

pp: 537

Abstract:
The word "sawdust" is simple, but complexities arise when the grower finds that variables are present when using sawdust, and that one cannot copy another grower's "recipe" and have immediate success (not usually anyway). Some of these variables are:
    Initial pH of the sawdust; age source, i.e., tree type and
    area from which it comes; particle size; sensitivity of
    the crop to be grown in it; length of time the plant is to
    be grown in it before planting out, etc.; pot shape (sur-
    face area in relationship to depth); temperature of
    medium at planting time; composting procedure; mix-
    ing procedure; local environment conditions, e.g. evap-
    oration rate, rainfall, etc., and quality of irrigation wa-
    ter; and, very important, the method and approach of
    fertility maintenance.

When one discovers these variables from practical experience, it must be realized that the grower should be prepared to put into operation his own experiments. Much good information has come from various research workers here in

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