Plant and microbial-induced changes in P pools in soil amended with straw and inorganic P

The aim of this study was to determine the effect of soil amendments on P pools and their depletion by plants and microbes. The experiment was divided into two parts. In Part A, barley straw (C/P 255) was added alone or with inorganic P to reduce the C/P ratio to 127 or 25 (straw treatments). In thr...

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Autores principales:	Kim Hoang,Khuyen Thi, Marschner,Petra
Lenguaje:	English
Publicado:	Chilean Society of Soil Science / Sociedad Chilena de la Ciencia del Suelo 2017
Materias:	Accumulation C/P ratio depletion P pools straw
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-95162017000400018
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spelling	oai:scielo:S0718-951620170004000182017-12-20Plant and microbial-induced changes in P pools in soil amended with straw and inorganic PKim Hoang,Khuyen ThiMarschner,Petra Accumulation C/P ratio depletion P pools straw The aim of this study was to determine the effect of soil amendments on P pools and their depletion by plants and microbes. The experiment was divided into two parts. In Part A, barley straw (C/P 255) was added alone or with inorganic P to reduce the C/P ratio to 127 or 25 (straw treatments). In three other treatments, the same amount of P was added as in the straw treatments as inorganic P (fertilizer treatments). The soil was incubated for three weeks. Then (Part B), wheat was grown for five weeks in one set of soils. Barley straw was added to another set to increase microbial growth and incubated moist for three weeks. P pools were measured at the end of Part A and Part B. At the end of Part A all P pools increased with P addition rate. P pools were greater in the fertilizer than the straw treatments except for microbial biomass P (MBP) which was greater in the straw treatments. After wheat growth, HCl-P, phosphatase-P, citrate-P, CaCl2-P were depleted compared to Part A, MBP was higher. Addition of barley straw in Part B induced depletion of HCl-P, and citrate-P, but increased phosphatase-P, CaCl2-P and MBP. It is concluded that the size of the P pools is mainly influenced by P addition rate not form in which P is added. The impact of growing plants on P pools differs from that of microbes stimulated by high C/P straw addition.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.4 20172017-12-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-95162017000400018en10.4067/S0718-95162017000400018
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Accumulation C/P ratio depletion P pools straw
spellingShingle	Accumulation C/P ratio depletion P pools straw Kim Hoang,Khuyen Thi Marschner,Petra Plant and microbial-induced changes in P pools in soil amended with straw and inorganic P
description	The aim of this study was to determine the effect of soil amendments on P pools and their depletion by plants and microbes. The experiment was divided into two parts. In Part A, barley straw (C/P 255) was added alone or with inorganic P to reduce the C/P ratio to 127 or 25 (straw treatments). In three other treatments, the same amount of P was added as in the straw treatments as inorganic P (fertilizer treatments). The soil was incubated for three weeks. Then (Part B), wheat was grown for five weeks in one set of soils. Barley straw was added to another set to increase microbial growth and incubated moist for three weeks. P pools were measured at the end of Part A and Part B. At the end of Part A all P pools increased with P addition rate. P pools were greater in the fertilizer than the straw treatments except for microbial biomass P (MBP) which was greater in the straw treatments. After wheat growth, HCl-P, phosphatase-P, citrate-P, CaCl2-P were depleted compared to Part A, MBP was higher. Addition of barley straw in Part B induced depletion of HCl-P, and citrate-P, but increased phosphatase-P, CaCl2-P and MBP. It is concluded that the size of the P pools is mainly influenced by P addition rate not form in which P is added. The impact of growing plants on P pools differs from that of microbes stimulated by high C/P straw addition.
author	Kim Hoang,Khuyen Thi Marschner,Petra
author_facet	Kim Hoang,Khuyen Thi Marschner,Petra
author_sort	Kim Hoang,Khuyen Thi
title	Plant and microbial-induced changes in P pools in soil amended with straw and inorganic P
title_short	Plant and microbial-induced changes in P pools in soil amended with straw and inorganic P
title_full	Plant and microbial-induced changes in P pools in soil amended with straw and inorganic P
title_fullStr	Plant and microbial-induced changes in P pools in soil amended with straw and inorganic P
title_full_unstemmed	Plant and microbial-induced changes in P pools in soil amended with straw and inorganic P
title_sort	plant and microbial-induced changes in p pools in soil amended with straw and inorganic p
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=S0718-95162017000400018
work_keys_str_mv	AT kimhoangkhuyenthi plantandmicrobialinducedchangesinppoolsinsoilamendedwithstrawandinorganicp AT marschnerpetra plantandmicrobialinducedchangesinppoolsinsoilamendedwithstrawandinorganicp
_version_	1714206563632152576

Plant and microbial-induced changes in P pools in soil amended with straw and inorganic P

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