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Substrates


and improved nutrient buffering

Humic acid coloured perlite for higher consumer acceptance

Despite perlite being a 100 % pure natural product, consumers tend to associate its white colour with being an artificially made or chemical product. This leads gardeners selling organic herbs to concerns about customer acceptance. Knauf introduceddark-coloured Perligran® Organic. The perlite is mixed with.....

Peat moss: A sustainable component of growing media

Peat bogs were formed thousands of years ago after the last receding ice age. As peat bogs continue in their evolution, mosses and other plant debris slowly accumulate in thick deposits. In Canada, peatlands cover 280 million acres (113.6 million hectares), or 13% of the land area of Canada. Of this, less.....

Biochar could replace unsustainable peat moss in greenhouse industry

Plant lovers are familiar with peat moss as the major component of potting mix, but harvest of the material is becoming unsustainable. Not only is peat being removed faster than it can re-form, its use in potting mix contributes to the release of carbon dioxide into the atmosphere.“Peat bogs naturally store.....

UK wants to get rid of UK peat in commercial horticulture

In the recent report 'A Green Future: Our 25 Year Plan to Improve the Environment', the UK government outlines measures to improve the environment in the country. One of those is the phasing out of peat in horticulture:"Our peat bogs and fens are important habitats that provide food and shelter for wildlife,.....

Phosphate detection in hydroponics using molecularly imprinted sensors

In a new study from the University of Manchester, an interdigitated electrode sensor was designed and microfabricated for measuring the changes in the capacitance of three phosphate selective molecularly imprinted polymer (MIP) formulations, in order to provide hydroponics users with a portable nutrient.....

US (MI): Managing substrate pH of soilless substrates

Did you know different substrate components in soilless mixes have different pHs? Peat moss and aged pine bark only have a natural pH between 3.0 and 4.0. The optimal substrate pH for most greenhouse and nursery crops, however, is between 5.4 and 6.4 (Figure 1). Therefore, soilless substrate manufacturers.....