A classic text on a critical issue of modern-day concern. The publication of this booklet was prompted by the growing concern about excessive nitrate contents in water supplies, feeds, and even food. These high concentrations of nitrate are potential, and sometimes actual, dangers to humanity and animals, and they can also bring about changes in landscape patterns. Dr. Herbert Koepf clearly spells out the significant ecological imbalances that result from the present methods of nitrate application. A clearly written and concise piece by the knowledgeable Dr. Koepf, this booklet remains highly recommended for its comprehensive style and educational value. The importance of this topic has certainly, and unfortunately, not decreased in the years since its publication. Topics covered include: Nitrate, nitrite, man, and livestock; Nitrate and nitrite in soil and plants; Fuming silos; Nitrate moving downward; Eutrophication; and The nitrate syndrome.