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| Content Provider | Springer Nature Link |
|---|---|
| Author | Yun, Soek In Lim, Sang Sun Lee, Gwang Sung Lee, Sang Mo Kim, Han Yong Ro, Hee Myong Choi, Woo Jung |
| Copyright Year | 2011 |
| Abstract | Nitrogen isotope abundance (δ 15N) of paddy rice (Oryza sativa L.) grown for 110 days after transplanting (DAT) under field conditions with ammonium sulfate (AS with −0.4‰ as a synthetic fertilizer), pig manure compost (PMC with 15.3‰ as a livestock manure compost), and hairy vetch (HV with −0.5‰ as a green manure) was investigated to test the possible use of δ 15N technique in discriminating organically grown from conventionally grown rice. At 15 DAT, the δ 15N of whole rice decreased (P < 0.05) in the order of 10.5‰ for PMC > 5.5‰ for control (without N input) > 4.0‰ for HV > 1.8‰ for AS. This difference seemed to reflect primarily the δ 15N signal of N sources. Although differences in δ 15N of rice grown with isotopically distinct N inputs (i.e. PMC vs. AS and PMC vs. HV) became smaller over time, the difference (2.8 and 3.0‰ difference at harvest on 110 DAT, respectively) was still significant (P < 0.05). However, there was no distinguishable difference between AS and HV treatment after 42 DAT. Such effect of N inputs on δ 15N of whole rice was also observed for root, shoot, and grain at harvest. Therefore, our study suggests that it is possible to distinguish rice grown with manure composts from that grown with synthetic fertilizers. However, if green manure of preceding N2-fixing plants is used as the N source, δ 15N of rice may not be a good surrogate of N sources. |
| Starting Page | 607 |
| Ending Page | 617 |
| Page Count | 11 |
| File Format | |
| ISSN | 01782762 |
| Journal | Biology and Fertility of Soils |
| Volume Number | 47 |
| Issue Number | 6 |
| e-ISSN | 14320789 |
| Language | English |
| Publisher | Springer-Verlag |
| Publisher Date | 2011-04-12 |
| Publisher Place | Berlin, Heidelberg |
| Access Restriction | One Nation One Subscription (ONOS) |
| Subject Keyword | δ 15N technique Green manure N sources Organic produce certification Temperate rice Soil Science & Conservation Agriculture |
| Content Type | Text |
| Resource Type | Article |
| Subject | Agronomy and Crop Science Soil Science Microbiology |
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