Researchers have suggested that the 'greening' of the CAP has been a failure. The latest version of the CAP is no greener than its predecessor and would fail a basic Advertising Standards Authority test in terms of its claims: No greening
The researchers conclude that it fails to encourage greater wildlife abundance or adequate protection for vulnerable habitats such as grasslands.
I would not wish to dispute the specific conclusions made. Policy instruments have often not been well designed and policy effectiveness insufficiently monitored. The sums of money available do not match the scale of the challenge, but have often not been well used.
However, one must beware of reducing environmental policy to the protection of biodiversity or landscape effects. Reducing water pollution from agricultural activities has been a key policy objective and some progress has been made. Climate change mitigation is surely the key objective, but little progress has been made, despite the contribution of modern agriculture to greenhouse gases.