Residue addition frequency influences respiration, microbial biomass and nutrient availability in soil amended with high and low C/N residue

In previous studies, we showed that the C/N ratio of the first residue added influences soil respiration, microbial biomass and nutrient availability after the second residue addition which we refer to as legacy effect. The aim of the study was to investigate the effect of residue addition frequency...

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Autores principales:	Zheng,Bo, Marschner,Petra
Lenguaje:	English
Publicado:	Chilean Society of Soil Science / Sociedad Chilena de la Ciencia del Suelo 2017
Materias:	Amendment frequency microbial biomass nutrient availability residue C/N ratio soil respiration
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-95162017000100001
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spelling	oai:scielo:S0718-951620170001000012017-09-27Residue addition frequency influences respiration, microbial biomass and nutrient availability in soil amended with high and low C/N residueZheng,BoMarschner,Petra Amendment frequency microbial biomass nutrient availability residue C/N ratio soil respiration In previous studies, we showed that the C/N ratio of the first residue added influences soil respiration, microbial biomass and nutrient availability after the second residue addition which we refer to as legacy effect. The aim of the study was to investigate the effect of residue addition frequency on microbial activity and nutrient availability, and the legacy effect. In Part A, the effect of high C/N residue (H) addition frequency in the first 16 days (d) was studied by adding H to soil once (d0), twice (d0, 8) or four times (d0, 4, 8, 12) followed by 10 g kg-1 low C/N residue (L) on day 16. The influence of L addition rate was assessed in Part B by adding H once on day 0 followed by L added once (d16), twice (d16, 24) or four times (d16, 20, 24, 24, 28). Cumulative respiration, microbial biomass C, N and P, N and P availability from d0 to d15 were higher with L than H. Particularly with L, cumulative respiration, microbial biomass and nutrient availability compared to single addition were lower on d7 with residue added twice or four times, but higher on d15. In Part A, H added twice or four times from d0 to d15 compared to a single H addition followed by a single L addition on d16 increased cumulative respiration, microbial nutrient uptake and reduced N and P availability on d23, but had no effect on d32. In Part B, frequent L addition after d16 enhanced microbial nutrient uptake on d23 but reducing nutrient availability compared to single L addition. It can be concluded that residue addition frequency strongly influences soil respiration, microbial biomass and nutrient availability after addition of low C/N residue.info:eu-repo/semantics/openAccessChilean Society of Soil Science / Sociedad Chilena de la Ciencia del SueloJournal of soil science and plant nutrition v.17 n.1 20172017-03-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-95162017000100001en10.4067/S0718-95162017005000001
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Amendment frequency microbial biomass nutrient availability residue C/N ratio soil respiration
spellingShingle	Amendment frequency microbial biomass nutrient availability residue C/N ratio soil respiration Zheng,Bo Marschner,Petra Residue addition frequency influences respiration, microbial biomass and nutrient availability in soil amended with high and low C/N residue
description	In previous studies, we showed that the C/N ratio of the first residue added influences soil respiration, microbial biomass and nutrient availability after the second residue addition which we refer to as legacy effect. The aim of the study was to investigate the effect of residue addition frequency on microbial activity and nutrient availability, and the legacy effect. In Part A, the effect of high C/N residue (H) addition frequency in the first 16 days (d) was studied by adding H to soil once (d0), twice (d0, 8) or four times (d0, 4, 8, 12) followed by 10 g kg-1 low C/N residue (L) on day 16. The influence of L addition rate was assessed in Part B by adding H once on day 0 followed by L added once (d16), twice (d16, 24) or four times (d16, 20, 24, 24, 28). Cumulative respiration, microbial biomass C, N and P, N and P availability from d0 to d15 were higher with L than H. Particularly with L, cumulative respiration, microbial biomass and nutrient availability compared to single addition were lower on d7 with residue added twice or four times, but higher on d15. In Part A, H added twice or four times from d0 to d15 compared to a single H addition followed by a single L addition on d16 increased cumulative respiration, microbial nutrient uptake and reduced N and P availability on d23, but had no effect on d32. In Part B, frequent L addition after d16 enhanced microbial nutrient uptake on d23 but reducing nutrient availability compared to single L addition. It can be concluded that residue addition frequency strongly influences soil respiration, microbial biomass and nutrient availability after addition of low C/N residue.
author	Zheng,Bo Marschner,Petra
author_facet	Zheng,Bo Marschner,Petra
author_sort	Zheng,Bo
title	Residue addition frequency influences respiration, microbial biomass and nutrient availability in soil amended with high and low C/N residue
title_short	Residue addition frequency influences respiration, microbial biomass and nutrient availability in soil amended with high and low C/N residue
title_full	Residue addition frequency influences respiration, microbial biomass and nutrient availability in soil amended with high and low C/N residue
title_fullStr	Residue addition frequency influences respiration, microbial biomass and nutrient availability in soil amended with high and low C/N residue
title_full_unstemmed	Residue addition frequency influences respiration, microbial biomass and nutrient availability in soil amended with high and low C/N residue
title_sort	residue addition frequency influences respiration, microbial biomass and nutrient availability in soil amended with high and low c/n residue
publisher	Chilean Society of Soil Science / Sociedad Chilena de la Ciencia del Suelo
publishDate	2017
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-95162017000100001
work_keys_str_mv	AT zhengbo residueadditionfrequencyinfluencesrespirationmicrobialbiomassandnutrientavailabilityinsoilamendedwithhighandlowcnresidue AT marschnerpetra residueadditionfrequencyinfluencesrespirationmicrobialbiomassandnutrientavailabilityinsoilamendedwithhighandlowcnresidue
_version_	1714206554284097536

Residue addition frequency influences respiration, microbial biomass and nutrient availability in soil amended with high and low C/N residue

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