A Policy Postion Statement on Composting from The Chartered Institution of Water and Environmental Management

May 14th, 2010 by Richard Lord

The Chartered Institution of Water and Environmental Management (CIWEM) has produced a Policy Position statement on the role of composting in the management of organic waste and considers the operational, policy and environmental issues relating to this practice.

The full Policy Position Statement on composting is very worthwhile reading.  It makes manys points that are relevant to Guernsey’s situation.

The CIWEM Policy Position statement on composting states that “composts provide effective replacements for mineral phosphate and potassium fertilisers for crop production, but are generally poor sources of N as the organic N in the product is not readily released. However, this makes composts ideal substrates for building soil organic matter because the risk of nitrate leaching into groundwater is low.”

“UK agriculture requires significant inputs of biomaterials to correct the declining organic matter in soil used for food production. Composts provide an ideal substrate for this purpose as they contain significant amounts of organic matter.  Their low N availabilities also have the advantage of minimal risk of nitrate leaching to groundwater. Large rates of addition are necessary to increase soil organic matter reserves, but there is a conflict apparent between the need to raise soil organic matter and the current restrictions on N additions via organic manures. CIWEM recommends that these conflicts be resolved so that the full agronomic benefit of these materials on soil quality can be realised.”

“The market for alternatives to peat as horticultural soil conditioners is approaching saturation. Therefore the agricultural sector, land reclamation, soil improvement in urban areas, etc. are likely to be the main outlets for recycling bulk quantities of composted biowastes to land.”

1 Response to “A Policy Postion Statement on Composting from The Chartered Institution of Water and Environmental Management”

  1. Neil

    Protecting environment must be a compulsory motto in every organization. If the natural resources are not preserved now, then the day is not so far when they got extinct, especially water. So, some major steps must be taken in preserving and saving water.

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