Effect of residue mixtures on response of cumulative respiration to salinity

The study aimed to investigate the response of soil respiration to salinity when amended with mixtures of rapidly and slowly decomposable residues. Two incubation experiments were carried out with loam soils having EC(1:5)0.1, 1.0, 2.5 and 3.3 dS m-1. In experiment one, the four soils were amended w...

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Autores principales:	Hasbullah,H, Marschner,P
Lenguaje:	English
Publicado:	Chilean Society of Soil Science / Sociedad Chilena de la Ciencia del Suelo 2016
Materias:	Residue mixes respiration salinity
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-95162016000200011
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spelling	oai:scielo:S0718-951620160002000112016-10-24Effect of residue mixtures on response of cumulative respiration to salinityHasbullah,HMarschner,P Residue mixes respiration salinity The study aimed to investigate the response of soil respiration to salinity when amended with mixtures of rapidly and slowly decomposable residues. Two incubation experiments were carried out with loam soils having EC(1:5)0.1, 1.0, 2.5 and 3.3 dS m-1. In experiment one, the four soils were amended with 20 g kg-1 soil as sawdust (C/N 114) or kikuyu (C/N 19) alone or mixed at different ratios. In all mixtures, the decrease in cumulative respiration at 1 dS m-1compared to non-saline soil was smaller than with sawdust alone. In experiment two, three soils (EC(1:5)0.1, 1.0 and 2.5 dS m-1) were amended once or three times to a total addition rate of 10 g C kg-l soil either with sawdust alone, kikuyu alone or mixtures. In the treatments with mixtures, the decrease in cumulative respiration from non-saline to EC 1 dS m-1 was smallest in the treatments with three residue additions where 25% kikuyu was added on day 0 or on day 14 after addition of 50% sawdust on day 0. We conclude that even a relatively small proportion of rapidly decomposable residue in a mixture is sufficient to alleviate the negative impact of salinity on soil respiration.info:eu-repo/semantics/openAccessChilean Society of Soil Science / Sociedad Chilena de la Ciencia del SueloJournal of soil science and plant nutrition v.16 n.2 20162016-06-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-95162016000200011en10.4067/S0718-95162016005000028
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Residue mixes respiration salinity
spellingShingle	Residue mixes respiration salinity Hasbullah,H Marschner,P Effect of residue mixtures on response of cumulative respiration to salinity
description	The study aimed to investigate the response of soil respiration to salinity when amended with mixtures of rapidly and slowly decomposable residues. Two incubation experiments were carried out with loam soils having EC(1:5)0.1, 1.0, 2.5 and 3.3 dS m-1. In experiment one, the four soils were amended with 20 g kg-1 soil as sawdust (C/N 114) or kikuyu (C/N 19) alone or mixed at different ratios. In all mixtures, the decrease in cumulative respiration at 1 dS m-1compared to non-saline soil was smaller than with sawdust alone. In experiment two, three soils (EC(1:5)0.1, 1.0 and 2.5 dS m-1) were amended once or three times to a total addition rate of 10 g C kg-l soil either with sawdust alone, kikuyu alone or mixtures. In the treatments with mixtures, the decrease in cumulative respiration from non-saline to EC 1 dS m-1 was smallest in the treatments with three residue additions where 25% kikuyu was added on day 0 or on day 14 after addition of 50% sawdust on day 0. We conclude that even a relatively small proportion of rapidly decomposable residue in a mixture is sufficient to alleviate the negative impact of salinity on soil respiration.
author	Hasbullah,H Marschner,P
author_facet	Hasbullah,H Marschner,P
author_sort	Hasbullah,H
title	Effect of residue mixtures on response of cumulative respiration to salinity
title_short	Effect of residue mixtures on response of cumulative respiration to salinity
title_full	Effect of residue mixtures on response of cumulative respiration to salinity
title_fullStr	Effect of residue mixtures on response of cumulative respiration to salinity
title_full_unstemmed	Effect of residue mixtures on response of cumulative respiration to salinity
title_sort	effect of residue mixtures on response of cumulative respiration to salinity
publisher	Chilean Society of Soil Science / Sociedad Chilena de la Ciencia del Suelo
publishDate	2016
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-95162016000200011
work_keys_str_mv	AT hasbullahh effectofresiduemixturesonresponseofcumulativerespirationtosalinity AT marschnerp effectofresiduemixturesonresponseofcumulativerespirationtosalinity
_version_	1714206536199307264

Effect of residue mixtures on response of cumulative respiration to salinity

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