Respiration, microbial biomass and nutrient availability are influenced by previous and current soil water content in plant residue amended soil

Abstract: The aim of this study was to determine how soil respiration, microbial biomass and nutrient availability after the first and second plant residue addition are influenced by soil water content and number of days between rewetting of dry soil and second residue addition. A loamy soil was ame...

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Autores principales: Zhang,Yanchen, Marschner,Petra
Lenguaje:English
Publicado: Chilean Society of Soil Science / Sociedad Chilena de la Ciencia del Suelo 2018
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Acceso en línea:http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-95162018000100173
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spelling oai:scielo:S0718-951620180001001732018-11-21Respiration, microbial biomass and nutrient availability are influenced by previous and current soil water content in plant residue amended soilZhang,YanchenMarschner,Petra Microbial biomass nutrient availability plant residue addition soil respiration soil water content Abstract: The aim of this study was to determine how soil respiration, microbial biomass and nutrient availability after the first and second plant residue addition are influenced by soil water content and number of days between rewetting of dry soil and second residue addition. A loamy soil was amended with low C/N ratio (L) or high C/N ratio (H) plant residues and then maintained at 10% or 50% water holding capacity (WHC) for 10 days after which the soil at 10% WHC was rapidly rewetted to 50% WHC. A second residue with a different C/N ratio than the first was added one, two or five days after rewetting. Lower water content (10% WHC) during the first 10 days reduced respiration and microbial biomass. After day 10, MBN increased with number of days after rewetting. After the second residue addition, respiration rate in the first three to four days and available N after two days were higher when residue was added five days after rewetting compared to one day. But MBN was higher in treatments with residues added one day after rewetting compared to amendment after five days. The water content in the first 10 days had little effect on microbial biomass and nutrient availability after the second residue addition. We conclude that soil respiration, N mineralisation and immobilisation are influenced by the interval between plant residue additions, particularly in rewet soil.info:eu-repo/semantics/openAccessChilean Society of Soil Science / Sociedad Chilena de la Ciencia del SueloJournal of soil science and plant nutrition v.18 n.1 20182018-03-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-95162018000100173en10.4067/S0718-95162018005000703
institution Scielo Chile
collection Scielo Chile
language English
topic Microbial biomass
nutrient availability
plant residue addition
soil respiration
soil water content
spellingShingle Microbial biomass
nutrient availability
plant residue addition
soil respiration
soil water content
Zhang,Yanchen
Marschner,Petra
Respiration, microbial biomass and nutrient availability are influenced by previous and current soil water content in plant residue amended soil
description Abstract: The aim of this study was to determine how soil respiration, microbial biomass and nutrient availability after the first and second plant residue addition are influenced by soil water content and number of days between rewetting of dry soil and second residue addition. A loamy soil was amended with low C/N ratio (L) or high C/N ratio (H) plant residues and then maintained at 10% or 50% water holding capacity (WHC) for 10 days after which the soil at 10% WHC was rapidly rewetted to 50% WHC. A second residue with a different C/N ratio than the first was added one, two or five days after rewetting. Lower water content (10% WHC) during the first 10 days reduced respiration and microbial biomass. After day 10, MBN increased with number of days after rewetting. After the second residue addition, respiration rate in the first three to four days and available N after two days were higher when residue was added five days after rewetting compared to one day. But MBN was higher in treatments with residues added one day after rewetting compared to amendment after five days. The water content in the first 10 days had little effect on microbial biomass and nutrient availability after the second residue addition. We conclude that soil respiration, N mineralisation and immobilisation are influenced by the interval between plant residue additions, particularly in rewet soil.
author Zhang,Yanchen
Marschner,Petra
author_facet Zhang,Yanchen
Marschner,Petra
author_sort Zhang,Yanchen
title Respiration, microbial biomass and nutrient availability are influenced by previous and current soil water content in plant residue amended soil
title_short Respiration, microbial biomass and nutrient availability are influenced by previous and current soil water content in plant residue amended soil
title_full Respiration, microbial biomass and nutrient availability are influenced by previous and current soil water content in plant residue amended soil
title_fullStr Respiration, microbial biomass and nutrient availability are influenced by previous and current soil water content in plant residue amended soil
title_full_unstemmed Respiration, microbial biomass and nutrient availability are influenced by previous and current soil water content in plant residue amended soil
title_sort respiration, microbial biomass and nutrient availability are influenced by previous and current soil water content in plant residue amended soil
publisher Chilean Society of Soil Science / Sociedad Chilena de la Ciencia del Suelo
publishDate 2018
url http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-95162018000100173
work_keys_str_mv AT zhangyanchen respirationmicrobialbiomassandnutrientavailabilityareinfluencedbypreviousandcurrentsoilwatercontentinplantresidueamendedsoil
AT marschnerpetra respirationmicrobialbiomassandnutrientavailabilityareinfluencedbypreviousandcurrentsoilwatercontentinplantresidueamendedsoil
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