Sentence examples for n surplus from inspiring English sources

Such a system approach allows identifying the causes of varying N surplus and N utilisation.

A clear relation was found between N management, as expressed by the N surplus, and nitrate concentration in the groundwater.

So compared with a 'current average' farm in the middle of the 1990s with the same milk production level (N surplus of 408 kg ha−1), a reduction of 62% in N surplus was realized.

Higher plant densities promoted shoot N uptake and reduced soil mineral N residues and apparent N surplus in root zone.

This would minimize N surplus in areas of lower productivity and to improve the sustainability of N management overall.

In 1997, the mean N surplus on dairy farms in the Netherlands was 324 kg N ha−1.

In North Atlantic Europe intensive dairy farms have a low nitrogen (N) use efficiency, with high N surpluses often negatively affecting water quality.

Since 1993 the farm has succeeded in realising low N surpluses (1997: 76 kg N ha−1) and low nitrate concentrations (1993 1999 mean: 55 mg l−1).

Substantial reductions in N surpluses were achieved for both treatments TN and GC compared with treatment CN (N surpluses ha−1: 254, 168 and 119 kg at Site 1, and 247 kg, 190 and 73 kg at Site 2, for CN, TN and GC, respectively).

It was concluded that the combinations of mitigation options used were successful in reducing N surpluses compared with the conventional N management system, but animal and herbage production was reduced.

The amount of digestate for a reasonable fertilization strongly depends on the N surpluses and the straw management of the pre-crop.