Sewage sludge, organic fertilizer

According to the 2001 regulations, organic is taken to mean grown and prepared without the use of synthetic chemicals, sewage sludge (as fertilizers), or ionizing radiation. Synthetic pesticides, defoliants, fertilizers, and herbicides are forbidden. 

Miscellaneous sources total logging, sewage sludge, organic wastes, fertilizer, peat 10,290-23,800... 

The "certified organic label on a food means that the producers of the food followed these rules they did not use any synthetic pesticides, herbicides, or fertilizers to grow crops or feed for animals they did not use crops or feed that had been genetically modified, fertilized with sewage sludge, or irradiated they did not feed animals the byproducts of other animals they gave animals access to the outdoors and treated them humanely and they were inspected to make sure they followed the rules in letter and in spirit. 

Figure 4.9. Electron spin resonance spectra of humic acids isolated from unamended soil (a) and soil amended with 90, 225, and 630tha-1 of sewage sludge (b, c, and d, respectively). Reprinted from Senesi, N. (1989). Composted materials as organic fertilizers. Sci. Total Environ. 81/82, 521-542, with permission from Elsevier.

The supply of the coppice will be undertaken by Yorkshire Environmental Ltd., which will try to maximise the utilisation of biomass fuels supplied by short rotation forestry. Slurry of domestic treated sewage sludge supplied by Yorkshire Wafer Services Ltd. will be applied to the coppice plantations as organic fertiliser to increase crop yield. The sludge will be low in heavy metal, pathogens and odour. Waste ash from both the gasifier and the catalytic cracker will be recycled to the coppice plantations as a soil conditioner and source of base cations and micronutrients to improve soil fertility. 

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