Carbon budgets for an irrigated intensively grazed dairy pasture and an  unirrigated winter-grazed pasture

Hunt, John E.; Laubach, Johannes; Barthel, Matti; Fraser, Anitra; Phillips, Rebecca L.

doi:10.5194/bg-13-2927-2016

Articles | Volume 13, issue 10

https://doi.org/10.5194/bg-13-2927-2016

© Author(s) 2016. This work is distributed under
the Creative Commons Attribution 3.0 License.

Special issue:

OzFlux: a network for the study of ecosystem carbon and water...

https://doi.org/10.5194/bg-13-2927-2016

© Author(s) 2016. This work is distributed under
the Creative Commons Attribution 3.0 License.

Articles | Volume 13, issue 10

Research article

|

18 May 2016

Research article |

| 18 May 2016

Carbon budgets for an irrigated intensively grazed dairy pasture and an unirrigated winter-grazed pasture

John E. Hunt, Johannes Laubach, Matti Barthel, Anitra Fraser, and Rebecca L. Phillips

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Cumulative views and downloads (calculated since 15 Feb 2016)

Month	HTML	PDF	XML	Total
Feb 2016	122	42	3	167
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Apr 2016	24	7	0	31
May 2016	105	39	4	148
Jun 2016	48	16	9	73
Jul 2016	13	8	0	21
Aug 2016	14	9	0	23
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Feb 2023	30	20	4	54
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Feb 2025	27	47	3	77
Mar 2025	16	14	2	32
Apr 2025	11	15	0	26
May 2025	34	5	0	39
Jun 2025	46	14	0	60
Jul 2025	29	19	3	51
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Oct 2025	32	20	5	57
Nov 2025	35	27	11	73

Latest update: 28 Nov 2025

Short summary

Intensification of dairying is rapid in New Zealand, with unknown impact on stocks of soil carbon (C). We investigated changes of soil C over one year for an irrigated, fertilised, rotationally-grazed pasture and an unirrigated winter grazed pasture. The irrigated pasture gained more C from net CO₂ uptake, excreta deposition and fertiliser application than was lost by grazing. The unirrigated pasture lost a small amount of C. Intensive dairy practices may thus increase soil C in the short term.