Overall nitrogen application rates for Great Britain illustrated by bar chart over the past 25 years. The decline in nitrogen usage since the mid 1980's is marked.

Overall nitrogen application rates for Great Britain illustrated over the past 25 years. The decline in nitrogen usage since the mid 1980's is marked.

Overall nitrogen application rates for Great Britain illustrated over the past 30 years. The recent decline in nitrogen usage on grassland is particularly marked.

Overall nitrogen application rates for Engalnd and Wales illustrated over the past 30 years. The recent decline in nitrogen usage on grassland is particularly marked, application rates are now lower than at any time in the past 30 years.

Phosphate application rates for England and Wales have been falling gradually for the past 30 years. This is probably unsustainable if crop and grassland yields are to be maintained.

Potash application rates for England and Wales have fallen markedly since 1997 depleting soil reserves.

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