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| Content Provider | Springer Nature Link |
|---|---|
| Author | Djumaeva, D. Lamers, J. P. A. Martius, C. Khamzina, A. Ibragimov, N. Vlek, P. L. G. |
| Copyright Year | 2010 |
| Abstract | Afforestation with fast growing N-fixing trees is an option for ecological restoration of highly-salinized irrigated croplands, but information about the N-fixing capability of trees on saline soils is sparse. The 15N-enrichment technique (15NET) and the A value (AV) method were used to quantify in lysimeters the proportion of atmospheric N2 (%Ndfa) fixed by Elaeagnus angustifolia L., with a reference to non-N-fixing Gleditsia triacanthos L. and Ulmus pumila L. Twenty kg N ha−1 of 5 atom %15N excess ammonium nitrate (35% N) was applied to 1-year-old trees in 2007 and 2-year-olds in 2008. Since this rate was insufficient for the older reference trees, 60 kg N ha−1 was applied in 2008. With 15NET, the %Ndfa of E. angustifolia in 2007 was 79% when referenced against U. pumila and 68% against G. triacanthos. With the AV method, the %Ndfa of 2-year-old E. angustifolia was 80 and 68% when referenced against U. pumila and G. triacanthos, respectively. Over 2 years, E. angustifolia fixed 17 kg N ha−1 when related to U. pumila and 14 kg N ha−1 with G. triacanthos (assumed density: 5,000 trees ha−1). N-fixing E. angustifolia has the potential to be self-sufficient in N when planted in the strongly saline soils. |
| Starting Page | 329 |
| Ending Page | 339 |
| Page Count | 11 |
| File Format | |
| ISSN | 13851314 |
| Journal | Nutrient Cycling in Agroecosystems |
| Volume Number | 88 |
| Issue Number | 3 |
| e-ISSN | 15730867 |
| Language | English |
| Publisher | Springer Netherlands |
| Publisher Date | 2010-03-19 |
| Publisher Place | Dordrecht |
| Access Restriction | One Nation One Subscription (ONOS) |
| Subject Keyword | Atom %15N excess BNF Lysimeters Labeling method Soil fertility Uzbekistan Agriculture |
| Content Type | Text |
| Resource Type | Article |
| Subject | Agronomy and Crop Science Soil Science |
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