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We will see later that further reforms to the CAP in the late
1980’s (that offered subsidies to farmers who reduced livestock
density, decreased fertilizer use or switched to organic farming
or other extensive forms of production),  some National
control measures introduced by individual member states,
and the introduction in 1991 of the Nitrate Directive,
are having some effects.
Annex 11 of the Nitrate directive outlines Code(s) of Good
Agricultural Practice with the objective of reducing pollution
by nitrates.