The share is higher in most European OECD countries compared to most non-European OECD countries. This development may have slowed or even reversed the previous upward trend in adopting management practices beneficial to water quality for some regions within countries. At the same time, however, rising chemical input prices (fertilisers, pesticides) can have a counter-effect, by inducing farmers to use less of these inputs, assuming no other changes in farm costs/output prices.