HE TREND toward composting reached its peak in Switzerland in 1975 when approximately 10 percent-or over 200,000 tons-of garbage were composted. However, as garbage production per capita and per year increased ;gin 1960 to 430 kg in 1987, cheminination also accelerated. This led to concern about excessive pollutants in compost and their impact on human health and the environment. Switzerland's...

OBJECTIVE We investigated the effectiveness of a theoretically motivated intervention at reducing procedural errors in train yard operations, where making these errors could be costly or life-threatening. BACKGROUND A widespread and persistent memory error that people commit on a daily basis is the postcompletion error (PCE), that is, forgetting to complete the final step of a procedural task...

A capability to determine the availability of nitrogen in organic amendments is necessary to ensure that such materials will provide sufficient nitrogen to the growing crop and cause minimal environmental degradation. Greenhouse bioassays were used to evaluate N availability of organic by-products, including several employed in the field study of this research. Tall fescue was grown in greenhou...