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Web URL(s): | http://www.sciencedirect.com/science/article/pii/016788099500607T Last checked: 10/09/2015 Requires: PDF Reader Access conditions: Item is within a limited-access website |
Publication Type:
| Report |
Author(s): | Sæbø, Arne;
Mortensen, Leiv M. |
Author Affiliation: | Sœrheim Research Center, 4062 Klepp St., Norway |
Title: | Growth and regrowth of Phleum pratense, Lolium perenne, Trifolium repens and Trifolium pratense at normal and elevated CO₂ concentration |
Source: | Agriculture, Ecosystems, and Environment. Vol. 55, No. 1, August 1995, p. 29-35. |
Publishing Information: | Amsterdam: Elsevier Science Publishers |
# of Pages: | 7 |
Keywords: | TIC Keywords: Carbon dioxide enrichment; Lolium perenne; Phleum pratense; Regrowth studies; Trifolium pratense; Trifolium repens
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Abstract/Contents: | "The effect of elevated CO₂ concentration (680±52 μmol mol⁻1) on growth of three cultivars of Phleum pratense, two of Lolium perenne and one of Trifolium repens and Trifolium pratense each, was studied during one growth season including three harvests. The study was performed in ten 9 m2 field chamber units in a cool maritime climate under long days (15-18 h), on the southwest coast of Norway (59° N, 6° E). Tillering in P. pratense and L. perenne was not significantly affected in the first harvest (June/July), but was increased by 30% in the third harvest (September) in response to elevated CO₂ concentrations. The plant height was reduced by 16-24% in P. pratense and by 25-29% in L. perenne at high CO₂. The dry weight yield of the two grass species was negatively affected by elevated CO₂ in the first two harvests, however, no effect was found in the last harvest. The total harvestable dry matter was decreased by 18% in P. pratense and 13% in L. perenne. The dry matter of the stubble was increased at elevated CO₂, by 18% in P. pratense and 26% in L. perenne, leaving more of the yield in the meadow after harvest. Raising the CO₂ concentration increased the dry weight by 30% in both clover species. The results are discussed in relation to the climatic condtions during the season." |
Language: | English |
References: | 15 |
Note: | Tables Graphs |
| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete): Sæbø, L. A., and L. M. Mortensen. 1995. Growth and regrowth of Phleum pratense, Lolium perenne, Trifolium repens and Trifolium pratense at normal and elevated CO₂ concentration. Agric. Ecosyst. Environ. 55(1):p. 29-35. |
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| Web URL(s): http://www.sciencedirect.com/science/article/pii/016788099500607T Last checked: 10/09/2015 Requires: PDF Reader Access conditions: Item is within a limited-access website |
| MSU catalog number: S 589.7 .A34 |
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