more efficient under larger reductions. Phosphorus reductions at the subwatershed level vary but provide information about …

proposed policy options in the Upper Waikato catchment. In the first phase nitrogen emissions are determined for representative …

Policymakers are concerned about nitrogen and phosphorus export to water bodies. Exports may be reduced by paying … evaluate the cost-effectiveness of practice and performance incentives for reducing nitrogen exports. Performance incentives …

benefits through a reduction in losses due to cold and an increase in yield from the better use of nitrogen by the cold …

Agriculture is the main source of nitrogen loading (EEA, 2012) and is the sector with the largest remaining emission … reduction potential (Sutton et al., 2011). Furthermore, surpluses of nitrogen are forecast to grow in the next decade (FAO, 2008 …). The objective of this study is to evaluate the determinants of the use of nitrogen inputs in agriculture, and the effects …

. Specifically, it investigates the economic impact of SSNM, focusing on SSNM-induced changes in the yield, profit, nitrogen use and … profit by $150 per hectare. It has no statistically significant effect on the amount of pesticide and nitrogen use of farmers …

-maximizing nitrogen rates, yields, and net returns for corn grown after corn, cotton, and soybeans. The stochastic response functions were … best. The profit-maximizing nitrogen rates were similar for corn after corn, cotton, and soybeans, but relative to corn …

maximum likelihood. Optimal levels of nitrogen were lower than recommended levels. …