%0 Journal Article %1 citeulike:11668419 %A Jin, Jian %A Tang, Caixian %A Armstrong, Roger %A Butterly, Clayton %A Sale, Peter %B Plant and Soil %D 2013 %I Springer Netherlands %J Plant and Soil %K agface, citeulikeExport co2, face, face\_nutrients, phosphorus, root, soil, wheat %N 1-2 %P 315--328 %R 10.1007/s11104-012-1516-9 %T Elevated CO2 temporally enhances phosphorus immobilization in the rhizosphere of wheat and chickpea %U http://dx.doi.org/10.1007/s11104-012-1516-9 %V 368 %X Aims The efficient management of phosphorus (P) in cropping systems remains a challenge due to climate change. We tested how plant species access P pools in soils of varying P status (Olsen-P 3.2–17.6 mg kg−1), under elevated atmosphere CO2 (eCO2). Methods Chickpea (Cicer arietinum L.) and wheat (Triticum aestivum L.) plants were grown in rhizo-boxes containing Vertosol or Calcarosol soil, with two contrasting P fertilizer histories for each soil, and exposed to ambient (380 ppm) or eCO2 (700 ppm) for 6 weeks. Results The NaHCO3-extractable inorganic P (Pi) in the rhizosphere was depleted by both wheat and chickpea in all soils, but was not significantly affected by CO2 treatment. However, NaHCO3-extractable organic P (Po) accumulated, especially under eCO2 in soils with high P status. The NaOH-extractable Po under eCO2 accumulated only in the Vertosol with high P status. Crop species did not exhibit different eCO2-triggered capabilities to access any P pool in either soil, though wheat depleted NaHCO3-Pi and NaOH-Pi in the rhizosphere more than chickpea. Elevated CO2 increased microbial biomass C in the rhizosphere by an average of 21 \%. Moreover, the size in Po fractions correlated with microbial C but not with rhizosphere pH or phosphatase activity. Conclusion Elevated CO2 increased microbial biomass in the rhizosphere which in turn temporally immobilized P. This P immobilization was greater in soils with high than low P availability.

@article{citeulike:11668419, abstract = {{Aims The efficient management of phosphorus (P) in cropping systems remains a challenge due to climate change. We tested how plant species access P pools in soils of varying P status (Olsen-P 3.2–17.6 mg kg−1), under elevated atmosphere CO2 (eCO2). Methods Chickpea (Cicer arietinum L.) and wheat (Triticum aestivum L.) plants were grown in rhizo-boxes containing Vertosol or Calcarosol soil, with two contrasting P fertilizer histories for each soil, and exposed to ambient (380 ppm) or eCO2 (700 ppm) for 6 weeks. Results The NaHCO3-extractable inorganic P (Pi) in the rhizosphere was depleted by both wheat and chickpea in all soils, but was not significantly affected by CO2 treatment. However, NaHCO3-extractable organic P (Po) accumulated, especially under eCO2 in soils with high P status. The NaOH-extractable Po under eCO2 accumulated only in the Vertosol with high P status. Crop species did not exhibit different eCO2-triggered capabilities to access any P pool in either soil, though wheat depleted NaHCO3-Pi and NaOH-Pi in the rhizosphere more than chickpea. Elevated CO2 increased microbial biomass C in the rhizosphere by an average of 21 \%. Moreover, the size in Po fractions correlated with microbial C but not with rhizosphere pH or phosphatase activity. Conclusion Elevated CO2 increased microbial biomass in the rhizosphere which in turn temporally immobilized P. This P immobilization was greater in soils with high than low P availability.}}, added-at = {2019-03-31T01:14:40.000+0100}, author = {Jin, Jian and Tang, Caixian and Armstrong, Roger and Butterly, Clayton and Sale, Peter}, biburl = {https://www.bibsonomy.org/bibtex/21544dd82487311bca6d4f78e561e62b7/dianella}, booktitle = {Plant and Soil}, citeulike-article-id = {11668419}, citeulike-linkout-0 = {http://dx.doi.org/10.1007/s11104-012-1516-9}, citeulike-linkout-1 = {http://www.springerlink.com/content/13rv252121042t21}, citeulike-linkout-2 = {http://link.springer.com/article/10.1007/s11104-012-1516-9}, day = 8, doi = {10.1007/s11104-012-1516-9}, interhash = {a4661c61b54e560006799e80fcaeeba9}, intrahash = {1544dd82487311bca6d4f78e561e62b7}, issn = {0032-079X}, journal = {Plant and Soil}, keywords = {agface, citeulikeExport co2, face, face\_nutrients, phosphorus, root, soil, wheat}, month = nov, number = {1-2}, pages = {315--328}, posted-at = {2013-12-10 01:08:13}, priority = {2}, publisher = {Springer Netherlands}, timestamp = {2019-03-31T01:16:26.000+0100}, title = {{Elevated CO2 temporally enhances phosphorus immobilization in the rhizosphere of wheat and chickpea}}, url = {http://dx.doi.org/10.1007/s11104-012-1516-9}, volume = 368, year = 2013 }