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 …

of first deriving the optimal nitrogen stock and application, ceteris paribus, was followed by an assessment of tillage …

Nitrogen is a crucial input for the efficient production of rice and is generally applied in two split treatments … is no pre-sowing test to estimate nitrogen requirements and farmers use cropping history to make this decision. The aim … of this study was to first value the information to growers provided by a nitrogen test for soils of rice paddocks and …

. Optimal nitrogen rates are calculated for two yield response functions: linear response plateau and quadratic. Nonstochastic … are small since optimal nitrogen rates do not differ greatly between stochastic and nonstochastic models. …

We estimate the cost of offsets tied to reductions in the use of nitrogen on U.S. cornfields under the proposed …

regulation systems aimed at reducing nitrogen leaching, analyses of measures for reducing phosphorus losses and estimation of … regulation when compared with administrative regulation and set a side. For phosphorus a balance between incoming and outgoing … phosphorus is very costly as this requires that much slurry is transported from the western to the eastern part of Denmark. The …

regulation systems aimed at reducing nitrogen leaching, analyses of measures for reducing phosphorus losses and estimation of … regulation when compared with administrative regulation and set a side. For phosphorus a balance between incoming and outgoing … phosphorus is very costly as this requires that much slurry is transported from the western to the eastern part of Denmark. The …

inherent in agricultural cropland for policy use. Phosphorus abatement cost functions for cropland farmers in a southeastern … non point phosphorus discharges into the Minnesota River. Results indicate an efficiently targeted policy to reduce … phosphorus discharge by 40% would cost US$ 167,700 or 844 per farm. © 2003 Elsevier B.V. All rights reserved. …