| http://www.w3.org/ns/prov#value | - For example, the impact of rising oil or fertiliser prices, or tighter environmental legislation, can have a disproportionate impact on the non-organic sector.Cropped farms6 year average organic margin compared to non-organic (??/ha): +??26.17Commentary: Cropped farms, on which cereals and other crops account for more than two-thirds of the total standard gross margin, have reported a steady incre
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