farming: materials and inputs

This article was written by Jane Sooby. Widespread leakage of nitrogen from agricultural production has become a huge problem worldwide. Recent news articles have reported that numerous small towns in California’s central valley, the country’s most productive agricultural region, must use bottled water because their municipal water supplies are contaminated with dangerous levels of nitrates. A report issued by UC Davis in early 2012 documented that in California’s Tulare Lake Basin and Salinas Valley, “roughly 254,000 people are currently at risk for nitrate contamination of their drinking water.” The “dead zone” in the Gulf of Mexico grows larger each year, depleted of oxygen by uncontrolled algal growth.