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
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.) sto...
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Instituto de Investigaciones Agropecuarias, INIA
2017
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oai:scielo:S0718-583920170004003822018-01-30Maize stover biochar increases urea ( 15 N isotope) retention in soils but does not promote its acquisition by plants during a 4-year pot experimentLiu,ZunqiCheng,XiaoyiSun,DaquanMeng,JunChen,Wenfu Biochar 15N isotope N retention N uptakes Zea mays. 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.info:eu-repo/semantics/openAccessInstituto de Investigaciones Agropecuarias, INIAChilean journal of agricultural research v.77 n.4 20172017-01-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392017000400382en10.4067/S0718-58392017000400382 |
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Scielo Chile |
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Scielo Chile |
| language |
English |
| topic |
Biochar 15N isotope N retention N uptakes Zea mays. |
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Biochar 15N isotope N retention N uptakes Zea mays. Liu,Zunqi Cheng,Xiaoyi Sun,Daquan Meng,Jun Chen,Wenfu 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 |
| 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. |
| author |
Liu,Zunqi Cheng,Xiaoyi Sun,Daquan Meng,Jun Chen,Wenfu |
| author_facet |
Liu,Zunqi Cheng,Xiaoyi Sun,Daquan Meng,Jun Chen,Wenfu |
| author_sort |
Liu,Zunqi |
| 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 |
| title_short |
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 |
| title_full |
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 |
| title_fullStr |
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 |
| title_full_unstemmed |
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 |
| title_sort |
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 |
| publisher |
Instituto de Investigaciones Agropecuarias, INIA |
| publishDate |
2017 |
| url |
http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-58392017000400382 |
| work_keys_str_mv |
AT liuzunqi maizestoverbiocharincreasesurea15nisotoperetentioninsoilsbutdoesnotpromoteitsacquisitionbyplantsduringa4yearpotexperiment AT chengxiaoyi maizestoverbiocharincreasesurea15nisotoperetentioninsoilsbutdoesnotpromoteitsacquisitionbyplantsduringa4yearpotexperiment AT sundaquan maizestoverbiocharincreasesurea15nisotoperetentioninsoilsbutdoesnotpromoteitsacquisitionbyplantsduringa4yearpotexperiment AT mengjun maizestoverbiocharincreasesurea15nisotoperetentioninsoilsbutdoesnotpromoteitsacquisitionbyplantsduringa4yearpotexperiment AT chenwenfu maizestoverbiocharincreasesurea15nisotoperetentioninsoilsbutdoesnotpromoteitsacquisitionbyplantsduringa4yearpotexperiment |
| _version_ |
1714205373569695744 |