Food production remains the highest agricultural priority, subject to the constraint that it be done in harmony with nature, or at least with minimum environmental pollution. The amount of fertilizer applied can be controlled using modern application techniques, including soil and crop management, guaranteeing higher economic profit and lower environmental cost. It is in such a context that the present book addresses the efficient and rational use of mineral and organic fertilizers while preserving environmental quality. The book discusses the impact on surface and groundwaters, soils and crops, and experience of nitrate leaching, denitrification, ammonia volatilization, heavy metal pollution, agricultural and urban waste management, and international and national legislation.
Audience: Agronomists, environmentalists, soil and food chemists, ecologists, policy makers, and managers in the fertilizer industry concerned with the trend of public opinion.

Inhalt
Opening speech.- Opening lecture.- Session I: Fertilizers for Food Production.- Session II: Fertilizers for Forestal Production.- Session III: Nutrient Cycling and Sustainability.- Session IVa: Mineral Fertilizers Management.- Session IVb: Organic Manures Management.- Session Va: Fertilizer Impact on Environment-Water, Air.- Session Vb: Fertilizer Impact on Environment-Soil, Crops.- Session VI: Code for Agricultural Practices.- Author index.