| Title |
Effect of wood ash and crushed rock soil amendments on red clover growth and dinitrogen fixation |
| ID_Doc |
23893 |
| Authors |
Dahlin, AS; Stenberg, M |
| Title |
Effect of wood ash and crushed rock soil amendments on red clover growth and dinitrogen fixation |
| Year |
2017 |
| Published |
Agricultural And Food Science, 26, 4 |
| DOI |
10.23986/afsci.63739 |
| Abstract |
The fertiliser effect of adding wood ash or crushed rock to a low-fertility soil, compared with an unamended control, was assessed in a pot experiment with a perennial ryegrass-red clover mixture. Dinitrogen (N-2) fixation by the clover and translocation of fixed N to the grass were determined using N-15 natural abundance. The wood ash produced the highest accumulated clover biomass over two cuts, followed by the crushed rock. Chemical analyses suggested that the increase was due to K supply by the amendments. The wood ash also led to larger amounts of fixed N compared with the control. However, N-2 fixation was not increased as much as biomass amount, leading to dilution of plant N. There were minor or no treatment effects on mineralisation from soil N pools. This indicates that good-quality wood ash can be successfully used as a multi-element soil amendment to enhance clover growth on low-fertility soils. |
| Author Keywords |
circular economy; nitrogen translocation; recycling products; soil amendment |
| Index Keywords |
Index Keywords |
| Document Type |
Other |
| Open Access |
Open Access |
| Source |
Science Citation Index Expanded (SCI-EXPANDED) |
| EID |
WOS:000418755400002 |
| WoS Category |
Agriculture, Multidisciplinary; Food Science & Technology |
| Research Area |
Agriculture; Food Science & Technology |
| PDF |
https://journal.fi/afs/article/download/63739/30552
|