Effect of Fertilizer and Fixed Nitrogen on the Water Use Efficiency of Genge (Astragalus sinicus L.)
To compare the effect of fertilizer nitrogen (N) and fixed N on water use efficiency (WUE), we measured the cumulative evapotranspiration (ΣET) and total dry matter mass (DM) of genge growing in plant growth chambers. When regulating NH4–N application at 11 levels ranging from 0 – 315 mgN flask −1,...
| Main Authors: | , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Taylor & Francis Group
2015-01-01
|
| Series: | Plant Production Science |
| Subjects: | |
| Online Access: | http://dx.doi.org/10.1626/pps.18.104 |
| _version_ | 1831839156410515456 |
|---|---|
| author | Akio Sumi Shinpei Sugata Ikumi Yahiro Mina Odawara |
| author_facet | Akio Sumi Shinpei Sugata Ikumi Yahiro Mina Odawara |
| author_sort | Akio Sumi |
| collection | DOAJ |
| description | To compare the effect of fertilizer nitrogen (N) and fixed N on water use efficiency (WUE), we measured the cumulative evapotranspiration (ΣET) and total dry matter mass (DM) of genge growing in plant growth chambers. When regulating NH4–N application at 11 levels ranging from 0 – 315 mgN flask −1, N concentration of the genge rose from 0.7% to 3.9% as fertilizer N application was increased. Although both DM and ΣET changed on a quadratic curve, their relationship approximated a single regression line, regardless of N concentration. The effects of rhizobial inoculation of genge samples along with NH4–N application rates of 0, 10.5, 105, and 252 mgN flask−1 were also tested. The samples with application rates of 0 and 10.5 mgN flask −1, where both nodulation and fixed N application were confirmed, had lower WUE than un-inoculated samples. These results suggest that the impact on WUE is much greater in fixed N than in fertilizer N. |
| first_indexed | 2024-12-23T05:48:41Z |
| format | Article |
| id | doaj.art-eaa21cfd23854fc7a77431310454262c |
| institution | Directory Open Access Journal |
| issn | 1343-943X 1349-1008 |
| language | English |
| last_indexed | 2024-12-23T05:48:41Z |
| publishDate | 2015-01-01 |
| publisher | Taylor & Francis Group |
| record_format | Article |
| series | Plant Production Science |
| spelling | doaj.art-eaa21cfd23854fc7a77431310454262c2022-12-21T17:58:02ZengTaylor & Francis GroupPlant Production Science1343-943X1349-10082015-01-0118110410810.1626/pps.18.10411645229Effect of Fertilizer and Fixed Nitrogen on the Water Use Efficiency of Genge (Astragalus sinicus L.)Akio Sumi0Shinpei Sugata1Ikumi Yahiro2Mina Odawara3Faculty of Agriculture, Kagoshima UniversityFaculty of Agriculture, Kagoshima UniversityFaculty of Agriculture, Kagoshima UniversityFaculty of Agriculture, Kagoshima UniversityTo compare the effect of fertilizer nitrogen (N) and fixed N on water use efficiency (WUE), we measured the cumulative evapotranspiration (ΣET) and total dry matter mass (DM) of genge growing in plant growth chambers. When regulating NH4–N application at 11 levels ranging from 0 – 315 mgN flask −1, N concentration of the genge rose from 0.7% to 3.9% as fertilizer N application was increased. Although both DM and ΣET changed on a quadratic curve, their relationship approximated a single regression line, regardless of N concentration. The effects of rhizobial inoculation of genge samples along with NH4–N application rates of 0, 10.5, 105, and 252 mgN flask−1 were also tested. The samples with application rates of 0 and 10.5 mgN flask −1, where both nodulation and fixed N application were confirmed, had lower WUE than un-inoculated samples. These results suggest that the impact on WUE is much greater in fixed N than in fertilizer N.http://dx.doi.org/10.1626/pps.18.104Biological nitrogen fixationDry matter productionEvapotranspirationFertilizer nitrogenFixed nitrogenGengeWater use efficiency |
| spellingShingle | Akio Sumi Shinpei Sugata Ikumi Yahiro Mina Odawara Effect of Fertilizer and Fixed Nitrogen on the Water Use Efficiency of Genge (Astragalus sinicus L.) Plant Production Science Biological nitrogen fixation Dry matter production Evapotranspiration Fertilizer nitrogen Fixed nitrogen Genge Water use efficiency |
| title | Effect of Fertilizer and Fixed Nitrogen on the Water Use Efficiency of Genge (Astragalus sinicus L.) |
| title_full | Effect of Fertilizer and Fixed Nitrogen on the Water Use Efficiency of Genge (Astragalus sinicus L.) |
| title_fullStr | Effect of Fertilizer and Fixed Nitrogen on the Water Use Efficiency of Genge (Astragalus sinicus L.) |
| title_full_unstemmed | Effect of Fertilizer and Fixed Nitrogen on the Water Use Efficiency of Genge (Astragalus sinicus L.) |
| title_short | Effect of Fertilizer and Fixed Nitrogen on the Water Use Efficiency of Genge (Astragalus sinicus L.) |
| title_sort | effect of fertilizer and fixed nitrogen on the water use efficiency of genge astragalus sinicus l |
| topic | Biological nitrogen fixation Dry matter production Evapotranspiration Fertilizer nitrogen Fixed nitrogen Genge Water use efficiency |
| url | http://dx.doi.org/10.1626/pps.18.104 |
| work_keys_str_mv | AT akiosumi effectoffertilizerandfixednitrogenonthewateruseefficiencyofgengeastragalussinicusl AT shinpeisugata effectoffertilizerandfixednitrogenonthewateruseefficiencyofgengeastragalussinicusl AT ikumiyahiro effectoffertilizerandfixednitrogenonthewateruseefficiencyofgengeastragalussinicusl AT minaodawara effectoffertilizerandfixednitrogenonthewateruseefficiencyofgengeastragalussinicusl |