%0 Journal Article %1 citeulike:11276265 %A Lam, ShuKee %A Chen, Deli %A Norton, Rob %A Armstrong, Roger %B Plant and Soil %D 2013 %I Springer Netherlands %J Plant and Soil %K citeulikeExport co2, crop, ma16, protein %N 1-2 %P 551--561 %R 10.1007/s11104-012-1448-4 %T Crop residue incorporation negates the positive effect of elevated atmospheric carbon dioxide concentration on wheat productivity and fertilizer nitrogen recovery %U http://dx.doi.org/10.1007/s11104-012-1448-4 %V 366 %X Background and purpose Rapid increases in atmospheric carbon dioxide concentration (CO 2 ) may increase crop residue production and carbon: nitrogen (C:N) ratio. Whether the incorporation of residues produced under elevated CO 2 will limit soil N availability and fertilizer N recovery in the plant is unknown. This study investigated the interaction between crop residue incorporation and elevated CO 2 on the growth, grain yield and the recovery of 15 N-labeled fertilizer by wheat ( Triticum aestivum L. cv. Yitpi) under controlled environmental conditions. Methods Residue for ambient and elevated CO 2 treatments, obtained from wheat grown previously under ambient and elevated CO 2 , respectively, was incorporated into two soils (from a cereal-legume rotation and a cereal-fallow rotation) 1 month before the sowing of wheat. At the early vegetative stage 15 N-labeled granular urea (10.22 atom\%) was applied at 50 kg N ha −1 and the wheat grown to maturity. Results When residue was not incorporated into the soil, elevated CO 2 increased wheat shoot (16 \%) and root biomass (41 \%), grain yield (19 \%), total N uptake (4 \%) and grain N removal (8 \%). However, the positive CO 2 fertilization effect on these parameters was absent in the soil amended with residue. In the absence of residue, elevated CO 2 increased fertilizer N recovery in the plant (7 \%), but when residue was incorporated elevated CO 2 decreased fertilizer N recovery. Conclusions A higher fertilizer application rate will be required under future elevated CO 2 atmospheres to replenish the extra N removed in grains from cropping systems if no residue is incorporated, or to facilitate the CO 2 fertilization effect on grain yield by overcoming N immobilization resulting from residue amendment.

@article{citeulike:11276265, abstract = {{Background and purpose Rapid increases in atmospheric carbon dioxide concentration ([CO 2 ]) may increase crop residue production and carbon: nitrogen (C:N) ratio. Whether the incorporation of residues produced under elevated [CO 2 ] will limit soil N availability and fertilizer N recovery in the plant is unknown. This study investigated the interaction between crop residue incorporation and elevated [CO 2 ] on the growth, grain yield and the recovery of 15 N-labeled fertilizer by wheat ( Triticum aestivum L. cv. Yitpi) under controlled environmental conditions. Methods Residue for ambient and elevated [CO 2 ] treatments, obtained from wheat grown previously under ambient and elevated [CO 2 ], respectively, was incorporated into two soils (from a cereal-legume rotation and a cereal-fallow rotation) 1 month before the sowing of wheat. At the early vegetative stage 15 N-labeled granular urea (10.22 atom\%) was applied at 50 kg N ha −1 and the wheat grown to maturity. Results When residue was not incorporated into the soil, elevated [CO 2 ] increased wheat shoot (16 \%) and root biomass (41 \%), grain yield (19 \%), total N uptake (4 \%) and grain N removal (8 \%). However, the positive [CO 2 ] fertilization effect on these parameters was absent in the soil amended with residue. In the absence of residue, elevated [CO 2 ] increased fertilizer N recovery in the plant (7 \%), but when residue was incorporated elevated [CO 2 ] decreased fertilizer N recovery. Conclusions A higher fertilizer application rate will be required under future elevated [CO 2 ] atmospheres to replenish the extra N removed in grains from cropping systems if no residue is incorporated, or to facilitate the [CO 2 ] fertilization effect on grain yield by overcoming N immobilization resulting from residue amendment.}}, added-at = {2019-03-31T01:14:40.000+0100}, author = {Lam, ShuKee and Chen, Deli and Norton, Rob and Armstrong, Roger}, biburl = {https://www.bibsonomy.org/bibtex/2eaf3ff718c0a08116c5906c565be88eb/dianella}, booktitle = {Plant and Soil}, citeulike-article-id = {11276265}, citeulike-linkout-0 = {http://dx.doi.org/10.1007/s11104-012-1448-4}, citeulike-linkout-1 = {http://www.springerlink.com/content/x80k42t10136m727}, citeulike-linkout-2 = {http://link.springer.com/article/10.1007/s11104-012-1448-4}, day = 16, doi = {10.1007/s11104-012-1448-4}, interhash = {34d43c93fbb5406d653c4caceb40e891}, intrahash = {eaf3ff718c0a08116c5906c565be88eb}, issn = {0032-079X}, journal = {Plant and Soil}, keywords = {citeulikeExport co2, crop, ma16, protein}, month = sep, number = {1-2}, pages = {551--561}, posted-at = {2016-01-14 02:09:00}, priority = {2}, publisher = {Springer Netherlands}, timestamp = {2019-03-31T01:16:26.000+0100}, title = {{Crop residue incorporation negates the positive effect of elevated atmospheric carbon dioxide concentration on wheat productivity and fertilizer nitrogen recovery}}, url = {http://dx.doi.org/10.1007/s11104-012-1448-4}, volume = 366, year = 2013 }