| dc.creator | Liu,Zunqi | |
| dc.creator | Cheng,Xiaoyi | |
| dc.creator | Sun,Daquan | |
| dc.creator | Meng,Jun | |
| dc.creator | Chen,Wenfu | |
| dc.date | 2017-01-01 | |
| dc.date.accessioned | 2019-04-24T21:20:30Z | |
| dc.date.available | 2019-04-24T21:20:30Z | |
| dc.identifier | https://scielo.conicyt.cl/scielo.php?script=sci_arttext&pid=S0718-58392017000400382 | |
| dc.identifier.uri | http://revistaschilenas.uchile.cl/handle/2250/56318 | |
| dc.description | ABSTRACT Biochar as a soil amendment has been shown to improve soil quality and crop growth. However, biochar’s effect on urea-N use efficiency in long term is not well elucidated. Here we studied urea-N (15N isotope) allocation in plants and soil in the presence of maize (Zea mays L.) stover biochar (equivalent to 46 t ha-1) during a 4-yr pot trial. Results showed that biochar only increased maize biomass (about 9%) with high amount of urea addition, which indicates the increased maize dry weight by biochar application could be attributed to synergistic effects between biochar and urea. Soil total N contents and fertilizer N retention were increased by 20% and 10.47% to 94.52%, respectively, indicating that biochar was more capable for fertilizer N retention than promote plant adsorption. Moreover, inorganic N content in biochar treatment was greatly increased, which implies the increased N mineralization. In total, we concluded that biochar application was a potential urea enhancer during plant production. | |
| dc.format | text/html | |
| dc.language | en | |
| dc.publisher | Instituto de Investigaciones Agropecuarias, INIA | |
| dc.relation | 10.4067/S0718-58392017000400382 | |
| dc.rights | info:eu-repo/semantics/openAccess | |
| dc.source | Chilean journal of agricultural research v.77 n.4 2017 | |
| dc.subject | Biochar | |
| dc.subject | 15N isotope | |
| dc.subject | N retention | |
| dc.subject | N uptakes | |
| dc.subject | Zea mays. | |
| dc.title | Maize stover biochar increases urea ( 15 N isotope) retention in soils but does not promote its acquisition by plants during a 4-year pot experiment | |
