| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 8488164 | Agriculture, Ecosystems & Environment | 2013 | 13 Pages |
Abstract
⺠The developed models can be used to construct a tool for optimizing N management. ⺠N balances increased more steeply in moderately than in slightly acidic soils. ⺠Nopt was strongly governed by the control yield without added N. ⺠On poorly responsive fields N inputs can be reduced by 20-75 kg haâ1 without economic loss. ⺠Such improved practices could reduce N balances by 10-40 kg haâ1 yearâ1.
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Authors
Elena Valkama, Tapio Salo, Martti Esala, Eila Turtola,