* • The effects of elevated CO2 are reported here on the uptake of nitrogen (N) and its relationships with growth and grain yield in rice (Oryza sativa). Using free-air CO2 enrichment (FACE), rice crops were grown at ambient or elevated (c. 300 µmol mol−1 above ambient) CO2 and supplied with low, medium or high levels of N. For the medium and high N treatments, FACE increased N uptake at panicle initiation but not at maturity. For total dry matter, as well as spikelet number and grain yield, positive interactions between CO2 and N uptake were observed. Furthermore, spikelet number was closely associated with N uptake at panicle initiation. These results indicate that, to maximize rice grain yield under elevated CO2, it is important to supply sufficient N over the whole season, in order to maintain the enhancement in dry matter production. In addition, N availability must be coordinated with the developmental stage of the crop, specifically to ensure that sufficient N is available at panicle initiation in order to maximize spikelet number and grain yield.
%0 Journal Article
%1 kimetal_01
%A Kim, H. Y.
%A Lieffering, M.
%A Miura, S.
%A Kobayashi, K.
%A Okada, M.
%D 2001
%I Blackwell Science Ltd
%J New Phytologist
%K biomass, citeulikeExport face, face\_nutrients, nitrogen, rice, riceface, root, shizukuishi, yield
%N 2
%P 223--229
%R 10.1046/j.1469-8137.2001.00111.x
%T Growth and nitrogen uptake of CO2-enriched rice under field conditions
%U http://dx.doi.org/10.1046/j.1469-8137.2001.00111.x
%V 150
%X * • The effects of elevated CO2 are reported here on the uptake of nitrogen (N) and its relationships with growth and grain yield in rice (Oryza sativa). Using free-air CO2 enrichment (FACE), rice crops were grown at ambient or elevated (c. 300 µmol mol−1 above ambient) CO2 and supplied with low, medium or high levels of N. For the medium and high N treatments, FACE increased N uptake at panicle initiation but not at maturity. For total dry matter, as well as spikelet number and grain yield, positive interactions between CO2 and N uptake were observed. Furthermore, spikelet number was closely associated with N uptake at panicle initiation. These results indicate that, to maximize rice grain yield under elevated CO2, it is important to supply sufficient N over the whole season, in order to maintain the enhancement in dry matter production. In addition, N availability must be coordinated with the developmental stage of the crop, specifically to ensure that sufficient N is available at panicle initiation in order to maximize spikelet number and grain yield.
@article{kimetal_01,
abstract = {{* • The effects of elevated CO2 are reported here on the uptake of nitrogen (N) and its relationships with growth and grain yield in rice (Oryza sativa). Using free-air CO2 enrichment (FACE), rice crops were grown at ambient or elevated (c. 300 µmol mol−1 above ambient) CO2 and supplied with low, medium or high levels of N. For the medium and high N treatments, FACE increased N uptake at panicle initiation but not at maturity. For total dry matter, as well as spikelet number and grain yield, positive interactions between CO2 and N uptake were observed. Furthermore, spikelet number was closely associated with N uptake at panicle initiation. These results indicate that, to maximize rice grain yield under elevated CO2, it is important to supply sufficient N over the whole season, in order to maintain the enhancement in dry matter production. In addition, N availability must be coordinated with the developmental stage of the crop, specifically to ensure that sufficient N is available at panicle initiation in order to maximize spikelet number and grain yield.}},
added-at = {2019-03-31T01:14:40.000+0100},
author = {Kim, H. Y. and Lieffering, M. and Miura, S. and Kobayashi, K. and Okada, M.},
biburl = {https://www.bibsonomy.org/bibtex/2e93c1596a32c58ca3405259f16c529cd/dianella},
citeulike-article-id = {12851134},
citeulike-linkout-0 = {http://dx.doi.org/10.1046/j.1469-8137.2001.00111.x},
day = 1,
doi = {10.1046/j.1469-8137.2001.00111.x},
interhash = {1b41f1062e691b9ab1d4103a507747eb},
intrahash = {e93c1596a32c58ca3405259f16c529cd},
journal = {New Phytologist},
keywords = {biomass, citeulikeExport face, face\_nutrients, nitrogen, rice, riceface, root, shizukuishi, yield},
month = may,
number = 2,
pages = {223--229},
posted-at = {2013-12-17 21:30:26},
priority = {5},
publisher = {Blackwell Science Ltd},
timestamp = {2019-03-31T01:16:26.000+0100},
title = {{Growth and nitrogen uptake of CO2-enriched rice under field conditions}},
url = {http://dx.doi.org/10.1046/j.1469-8137.2001.00111.x},
volume = 150,
year = 2001
}