Short-term effects of different pasture improvement treatments on the physical quality of an andisol

The improvement of degraded pastures is important for increasing pasture herbage mass and animal production in southern Chile. While research has normally focused on how animal treading affects soil compaction, no major work has yet been done to define the impact of pasture improvement managements o...

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Autores principales:	Dörner,J, Zúñiga,F, López,I
Lenguaje:	English
Publicado:	Chilean Society of Soil Science / Sociedad Chilena de la Ciencia del Suelo 2013
Materias:	Soil physical properties volcanic ash soil pasture improvement managements
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-95162013000200011
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spelling	oai:scielo:S0718-951620130002000112013-09-09Short-term effects of different pasture improvement treatments on the physical quality of an andisolDörner,JZúñiga,FLópez,I Soil physical properties volcanic ash soil pasture improvement managements The improvement of degraded pastures is important for increasing pasture herbage mass and animal production in southern Chile. While research has normally focused on how animal treading affects soil compaction, no major work has yet been done to define the impact of pasture improvement managements on soil physical functions, particularly when the initial situation is a degraded pasture. Thus, the aim of this study is to define the short-term effects of different pasture improvement managements on the physical quality and related processes of a volcanic ash soil. Four treatments were defined: two tilled, fertilized and seeded plots (T1 and T2), one non-tilled and non-fertilized plot (T3) and one non-tilled and fertilized plot (T4), all of which were compared to the initial situation of a highly degraded pasture (IS). Undisturbed soil samples were collected (1-10 cm) and the volumetric water content and temperature was continuously monitored at the 10 cm depth. The short-term effects of pasture improvement managements on soil physical quality and related processes differed in relation to the treatment method. As compared to the non-tilled plots, the aggregate destruction after tillage induced an increase in the water holding capacity, but a decrease in the air capacity and pore-continuity values due to grazing. The physical quality assessed by the S-Index reflected a good soil structural quality (S > 0.035). The tilled plots presented a higher S-Index as compared to the non-tilled plots, which is related to a slightly lower mechanical strength and larger water holding capacity. The latter also increased due to tillage and was positively correlated to pasture yields during the first intensive soil drying. Soil temperature differences between treatments were assessed and can be related to the higher water contents in the tilled plots and the presence of broad-leaf species in the non-tilled pastures. Finally, in order to properly understand how the implementation of pasture improvement managements affects the soil physical quality and related processes, long-term studies are required.info:eu-repo/semantics/openAccessChilean Society of Soil Science / Sociedad Chilena de la Ciencia del SueloJournal of soil science and plant nutrition v.13 n.2 20132013-06-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-95162013000200011en10.4067/S0718-95162013005000031
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Soil physical properties volcanic ash soil pasture improvement managements
spellingShingle	Soil physical properties volcanic ash soil pasture improvement managements Dörner,J Zúñiga,F López,I Short-term effects of different pasture improvement treatments on the physical quality of an andisol
description	The improvement of degraded pastures is important for increasing pasture herbage mass and animal production in southern Chile. While research has normally focused on how animal treading affects soil compaction, no major work has yet been done to define the impact of pasture improvement managements on soil physical functions, particularly when the initial situation is a degraded pasture. Thus, the aim of this study is to define the short-term effects of different pasture improvement managements on the physical quality and related processes of a volcanic ash soil. Four treatments were defined: two tilled, fertilized and seeded plots (T1 and T2), one non-tilled and non-fertilized plot (T3) and one non-tilled and fertilized plot (T4), all of which were compared to the initial situation of a highly degraded pasture (IS). Undisturbed soil samples were collected (1-10 cm) and the volumetric water content and temperature was continuously monitored at the 10 cm depth. The short-term effects of pasture improvement managements on soil physical quality and related processes differed in relation to the treatment method. As compared to the non-tilled plots, the aggregate destruction after tillage induced an increase in the water holding capacity, but a decrease in the air capacity and pore-continuity values due to grazing. The physical quality assessed by the S-Index reflected a good soil structural quality (S > 0.035). The tilled plots presented a higher S-Index as compared to the non-tilled plots, which is related to a slightly lower mechanical strength and larger water holding capacity. The latter also increased due to tillage and was positively correlated to pasture yields during the first intensive soil drying. Soil temperature differences between treatments were assessed and can be related to the higher water contents in the tilled plots and the presence of broad-leaf species in the non-tilled pastures. Finally, in order to properly understand how the implementation of pasture improvement managements affects the soil physical quality and related processes, long-term studies are required.
author	Dörner,J Zúñiga,F López,I
author_facet	Dörner,J Zúñiga,F López,I
author_sort	Dörner,J
title	Short-term effects of different pasture improvement treatments on the physical quality of an andisol
title_short	Short-term effects of different pasture improvement treatments on the physical quality of an andisol
title_full	Short-term effects of different pasture improvement treatments on the physical quality of an andisol
title_fullStr	Short-term effects of different pasture improvement treatments on the physical quality of an andisol
title_full_unstemmed	Short-term effects of different pasture improvement treatments on the physical quality of an andisol
title_sort	short-term effects of different pasture improvement treatments on the physical quality of an andisol
publisher	Chilean Society of Soil Science / Sociedad Chilena de la Ciencia del Suelo
publishDate	2013
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-95162013000200011
work_keys_str_mv	AT dornerj shorttermeffectsofdifferentpastureimprovementtreatmentsonthephysicalqualityofanandisol AT zunigaf shorttermeffectsofdifferentpastureimprovementtreatmentsonthephysicalqualityofanandisol AT lopezi shorttermeffectsofdifferentpastureimprovementtreatmentsonthephysicalqualityofanandisol
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Short-term effects of different pasture improvement treatments on the physical quality of an andisol

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