Increased bird density on egg production operations has led to high electricity consumption and manure handling problems. Anaerobic diqestion offers a source of energy (biogas) and a consistent method of manure management. This paper reports the results of a computer simulation model desiqned to...

Policy issues surrounding Federal programs for land retirement as a means of curtailing soil erosion are discussed in this paper. The analysis is structured around productivity differentials observed for New York cropland rated as highly erosive, moderately erosive, or nonerosive.

The U.S . Senate Committee on the Environment and Public Works is considering legislative proposals to reduce emissions of long-range transport air pollutants which may be a major factor in acid depostion. Preliminary results indicate that these proposals will have substantial ~ pacts on coal...