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DOI | 10.1111/gfs.12443 |
CO2 fertilization does not affect biomass production and nutritive value of a C-4 tropical grass in short timeframe | |
Abdalla Filho, Adibe Luiz1; Tavares Lima, Paulo de Mello1; Sakita, Gabriel Zanuto1; Dias e Silva, Tairon Pannunzio1; da Costa, Wilian dos Santos1; Ghini, Raquel2; Abdalla, Adibe Luiz1; Piccolo, Marisa de Cassia1 | |
发表日期 | 2019 |
ISSN | 0142-5242 |
EISSN | 1365-2494 |
英文摘要 | Increased atmospheric carbon dioxide (CO2) is a consequence of recent anthropogenic environmental changes, and few studies have evaluated its effects on tropical grasses used in Brazilian pastures, the main feed source for major part of ruminant livestock. This study evaluated forage production, chemical composition, in vitro total gas production and organic matter degradability of Brachiaria brizantha under contrasting CO2 atmospheric conditions in a free air carbon dioxide enrichment (FACE) facility. The forage plants were sown in each of the 12 octagonal rings of the FACE facility: six under ambient atmospheric CO2 concentration of approximately 390 mu mol/mol, hereafter referred to as control (CON) plots, and other six rings enriched with pure CO2 flux to achieve a target CO2 concentration of 550 mu mol/mol, hereafter called elevated CO2 (eCO(2)) plots. Soil samples were collected to determine carbon and nitrogen concentrations. After seventy days of sowing, a standardization cutting was performed and then at regular intervals of 21 days the forage was harvested (ten harvest dates) and forwarded to laboratorial analyses. Forage above-ground biomass production (dry matter (DM): 6,143 vs. 6,554 kg/ha), as well as morphological characteristics (leaves: 71% vs. 68%; stem: 28% vs. 31%), chemical composition (crude protein: 162.9 vs. 161.8; neutral detergent fibre: 663.8 vs. 664.3; acid detergent fibre: 369.5 vs. 381; lignin: 60.1 vs. 64.1 g/kg DM; total C: 45.9 vs. 45.9; total N: 2.8 vs. 2.8; total S: 0.2% vs. 0.2%), organic matter in vitro degradability (573.5 vs. 585.3 g/kg), methane (5.7 vs. 4.3 ml/g DM) and total gas (128.3 vs. 94.5 ml/g DM) production did not differ significantly between CON and eCO(2) treatments (p > .05). The results indicated that at least under short-term enrichment, B. brizantha was not affected by eCO(2). |
WOS研究方向 | Agriculture |
来源期刊 | GRASS AND FORAGE SCIENCE
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文献类型 | 期刊论文 |
条目标识符 | http://gcip.llas.ac.cn/handle/2XKMVOVA/101835 |
作者单位 | 1.Univ Sao Paulo, Ctr Energia Nucl Agr, Piracicaba, Brazil; 2.Embrapa Meio Ambiente, Jaguariuna, Brazil |
推荐引用方式 GB/T 7714 | Abdalla Filho, Adibe Luiz,Tavares Lima, Paulo de Mello,Sakita, Gabriel Zanuto,et al. CO2 fertilization does not affect biomass production and nutritive value of a C-4 tropical grass in short timeframe[J],2019. |
APA | Abdalla Filho, Adibe Luiz.,Tavares Lima, Paulo de Mello.,Sakita, Gabriel Zanuto.,Dias e Silva, Tairon Pannunzio.,da Costa, Wilian dos Santos.,...&Piccolo, Marisa de Cassia.(2019).CO2 fertilization does not affect biomass production and nutritive value of a C-4 tropical grass in short timeframe.GRASS AND FORAGE SCIENCE. |
MLA | Abdalla Filho, Adibe Luiz,et al."CO2 fertilization does not affect biomass production and nutritive value of a C-4 tropical grass in short timeframe".GRASS AND FORAGE SCIENCE (2019). |
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