Already the largest producer in the world of soy and beef, it has the capacity to adapt more crops to its tropical soils and develop its vast land frontier.

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The second generation of bioenergy crops has the potential to produce more energy on poorer soils and with fewer inputs than any crops we use for energy now.

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Environmental baselines to enable an assessment of the degree of contamination of soils and agricultural crops by heavy metals have not been established in the majority of African countries.

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There is rarely crop rotation and soils are depleted after years of grain crops.

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Few legal crops flourish in Putumayo, which is remote and has poor soils.

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The system is not suitable for many soils and is used on only around 10% of Britain's arable crops.

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