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Tomatoes by Simon Hart

Tomatoes by Simon Hart

Author:Simon Hart
Language: eng
Format: epub
ISBN: 9781847977328
Publisher: Crowood
Published: 2013-10-31T16:00:00+00:00


ROCKWOOL

Introduced to the UK in the early 1970s, this material soon became the most popular substrate for tomato production, a position it still occupies to this day. Rockwool (or ‘stonewool’ to the Dutch) is made from a type of basalt rock, which is heated to melting point (around 600°C) and spun into fibres, which are then made into an array of slabs, blocks and cubes. In appearance it looks similar to loft insulation material. Because it is specifically manufactured for the job, rockwool can be made to a specific density to give ideal water-/air-holding characteristics for a healthy root system, and as all plants experience the same root environment, crop uniformity is improved.



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