Rockwool as a Substrate for Greenhouse Crops

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Abstract

In the Scandinavian countries, the first crops were grown on rockwool in the beginning of the 1970’s. From 1975, rockwool was used by Dutch growers, and soon a growing system was developed for fruit vegetable crops, like tomato, cucumber, sweet pepper, and eggplant. Later, systems were developed also for cut flowers, like gerbera, rose, and carnation. In the meantime systems came into being for plant propagation, rooting of cuttings, and growing of container plants. For these purposes, propagating cubes, plugs, and granulated rockwool were produced.