Nigeria's president, Olusegun Obasanjo, committed $10 million to a fund to finance wider use of fertilizers.
Economic planning has encouraged double and triple cropping, intercropping, and the increased use of fertilizers.
The use of fertilizers is now strictly controlled, and mustard is sown to absorb excess nitrates.
Environmental problems, however, have made it necessary to reduce the use of fertilizers.
"It makes no sense to then reverse that by allowing damage from the inappropriate use of fertilizers".
Urbanization demanded greater agricultural productivity, which was achieved through the use of fertilizers, scientific breeding practices, and mechanization.
These include destruction of crop residues, deep plowing, crop rotation, use of fertilizers, strip-cropping, irrigation, and scheduled planting operations.
The main effects initially were seed improvement, greater use of fertilizers, and an increase in contractual tenancy.
The higher levels reflect the heavy use of fertilizers in agriculture, an East End industry that the Suffolk law does not cover.
Yet others are limiting or banning the use of fertilizers to avoid chemicals leaching into the groundwater, or imposing strict energy efficiency requirements for new homes.
Because of their vast size and the increased use of fertilizers, India and China are, in absolute terms, among the major consumers.
