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Proceedings of the International Plant Propagator's Society

Vol. 44

Understanding Fog Technology

Thomas R. Mee

pp: 350-353

Historically, many methods have been used in the attempt to retain moisture in unrooted cuttings. These have included sprinkling, misting, intermittent mist, and more recently micromist and fog. It has long been recognized that large droplets get the rooting medium too wet and soggy and that intermittent application of a fine mist is superior to sprinkling. Intermittent misting works fine for some applications, but it is difficult to control and sometimes results in an environment that is either too wet or too dry. Fog technology can solve those problems, but few people understand that the application of fog technology in propagation is entirely different from that of intermittent misting.

First, it's important to understand the difference between fog, micromist, mist, and sprinklers (rain size drops). The difference to the grower boils down to how wet things get, specifically plants and the growing medium. Big drops hold much more water than tiny droplets, so on a drop-by-drop

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