It explains the benefits of using compost and includes WRAP’s report on growing trials with substrates containing green compost. The 2003 trials used peat-reduced and peat-free formulations combined with varying rates of green compost. It concluded using a quantity of green compost in the substrate, particularly when blended with peat could produce plants of similar quality to those grown in traditional media.
WRAP say benefits include: a reduction in fertiliser rates, suppression of disease, more compact growth and increased environmental responsibility. Disadvantages may include unreliable quality, increased bulk density which increases transport costs and possible sciarid fly problems.
Head of WRAP’s organics programme Anne O’Brien said: “Confidence in the performance of composted materials is continuing to grow, and we now hope to encourage even more of those within the horticulture industry to use compost on a broader scale.”
The site also shows all UK producers and suppliers of BSI PAS 100 compost.
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