Month: August 2012

Rockwool cubes are used for seed germination, and rockwool blocks and slabs as a rooting medium for growing plants hydroponically. Rockwool is marketed as a rooting medium primarily based on its water-holding capacity and aeration characteristics, rather than its elemental content. The total elemental content of rockwool (decreasing range in %): Fe (10.5-13.4), Ca (7.30-11.8),…

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Chelates, primarily iron (Fe), play important roles in the production of Fe-sensitive crops when grown in alkaline soils. In addition, chelates of the element manganese (Mn) and zinc (Zn) have been of value under similar soil conditions. The form of the chelate and its method of application are important factors determining their effectiveness in providing…

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