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| Content Provider | Springer Nature Link |
|---|---|
| Author | Lim, Sang Sun Choi, Woo Jung Kwak, Jin Hyeob Jung, Jae Woon Chang, Scott X. Kim, Han Yong Yoon, Kwang Sik Choi, Soo Myung |
| Copyright Year | 2007 |
| Abstract | The effects of the liquid pig manure (LM) used in organic farming on the natural abundance of $^{15}$N and $^{13}$C signatures in plant tissues have not been studied. We hypothesized that application of LM will (1) increase δ$^{15}$N of plant tissues due to the high δ$^{15}$N of N in LM as compared with soil N or inorganic fertilizer N, and (2) increase δ$^{13}$C of plant tissues as a result of high salt concentration in LM that decreases stomatal conductance of plants. To test these hypotheses, variations in the δ$^{15}$N and δ$^{13}$C of Chinese cabbage (Brassica campestris L.) and chrysanthemum (Chrysanthemum morifolium Ramatuelle) with two different LMs (with δ$^{15}$N of +15.6 and +18.2‰) applied at two rates (323 and 646 kg N ha$^{-1}$ for cabbage and 150 and 300 kg N ha$^{-1}$ for chrysanthemum), or urea (δ$^{15}$N = -2.7‰) applied at the lower rate above for the respective species, in addition to the control (no N input) were investigated through a 60-day pot experiment. Application of LM significantly increased plant tissue δ$^{15}$N (range +9.4 to +14.9‰) over the urea (+3.2 to +3.3‰) or control (+6.8 to 7.7‰) treatments regardless of plant species, strongly reflecting the δ$^{15}$N of the N source. Plant tissue δ$^{13}$C were not affected by the treatments for cabbage (range −30.8 to −30.2‰) or chrysanthemum (−27.3 to −26.8‰). However, cabbage dry matter production decreased while its δ$^{13}$C increased with increasing rate of LM application or increasing soil salinity (P < 0.05), suggesting that salinity stress caused by high rate of LM application likely decreased stomatal conductance and limited growth of cabbage. Our study expanded the use of the δ$^{15}$N technique in N source (organic vs. synthetic fertilizer) identification and suggested that plant tissue δ$^{13}$C maybe a sensitive indicator of plant response to salinity stress caused by high LM application rates. |
| Starting Page | 67 |
| Ending Page | 77 |
| Page Count | 11 |
| File Format | |
| ISSN | 0032079X |
| Journal | Plant and Soil |
| Volume Number | 295 |
| Issue Number | 1-2 |
| e-ISSN | 15735036 |
| Language | English |
| Publisher | Kluwer Academic Publishers |
| Publisher Date | 2007-04-20 |
| Publisher Place | Dordrecht |
| Access Restriction | One Nation One Subscription (ONOS) |
| Subject Keyword | δ$^{13}$C δ$^{15}$N Liquid livestock manure Organic input Salinity Synthetic fertilizer Ecology Plant Physiology Soil Science & Conservation Plant Sciences |
| Content Type | Text |
| Resource Type | Article |
| Subject | Soil Science Plant Science |
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