Mixing organic amendments with high and low C/N ratio influences nutrient availability and leaching in sandy soil

Abstract: Little is known about available N and P, microbial biomass and leachate N and P concentration in mixes of organic materials differing in C/N ratio. Sandy soil was amended with wheat straw (W, C/N 71) and cow manure (CM, C/N 7) either alone (100W and 100CM) or in different ratios (values ar...

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Autores principales:	Le,Thi Huong Xuan, Marschner,Petra
Lenguaje:	English
Publicado:	Chilean Society of Soil Science / Sociedad Chilena de la Ciencia del Suelo 2018
Materias:	Available N available P, leached N, leached P cow manure, organic amendment mixtures, wheat straw
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-95162018000400952
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spelling	oai:scielo:S0718-951620180004009522019-02-05Mixing organic amendments with high and low C/N ratio influences nutrient availability and leaching in sandy soilLe,Thi Huong XuanMarschner,Petra Available N available P, leached N, leached P cow manure, organic amendment mixtures, wheat straw Abstract: Little is known about available N and P, microbial biomass and leachate N and P concentration in mixes of organic materials differing in C/N ratio. Sandy soil was amended with wheat straw (W, C/N 71) and cow manure (CM, C/N 7) either alone (100W and 100CM) or in different ratios (values are weight percentage of the organic materials): 75W-25CM, 50W-50CM, 25W-75CM. The control was unamended soil. Moist soil was incubated for 26 days, leaching was carried out on days 10 and 25. Soil was sampled on day 9 (before first leaching) and day 26 (after the second leaching Cumulative respiration over 26 days was similar in the unamended control and 100CM, it increased with proportion of W in the amendments. Per kg of soil, amended soils did not differ in available N, microbial biomass N (MBN) and leachate inorganic N concentration, but available P and leachate inorganic P increased with proportion of CM in the amendment. However, available N, MBN and inorganic N in leachate per g N added was highest in 100W and lowest in 100CM. In contrast, available P and leachate P concentration per g P added increased with proportion of CM. Measured available N and leachate inorganic N were lower than expected values whereas measured available P and inorganic P in the leachate were higher than expected. In mixes, CM appears to reduce N mineralisation in wheat whereas W stimulates P release from cow manure.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.4 20182018-12-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-95162018000400952en10.4067/S0718-95162018005002703
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	Available N available P, leached N, leached P cow manure, organic amendment mixtures, wheat straw
spellingShingle	Available N available P, leached N, leached P cow manure, organic amendment mixtures, wheat straw Le,Thi Huong Xuan Marschner,Petra Mixing organic amendments with high and low C/N ratio influences nutrient availability and leaching in sandy soil
description	Abstract: Little is known about available N and P, microbial biomass and leachate N and P concentration in mixes of organic materials differing in C/N ratio. Sandy soil was amended with wheat straw (W, C/N 71) and cow manure (CM, C/N 7) either alone (100W and 100CM) or in different ratios (values are weight percentage of the organic materials): 75W-25CM, 50W-50CM, 25W-75CM. The control was unamended soil. Moist soil was incubated for 26 days, leaching was carried out on days 10 and 25. Soil was sampled on day 9 (before first leaching) and day 26 (after the second leaching Cumulative respiration over 26 days was similar in the unamended control and 100CM, it increased with proportion of W in the amendments. Per kg of soil, amended soils did not differ in available N, microbial biomass N (MBN) and leachate inorganic N concentration, but available P and leachate inorganic P increased with proportion of CM in the amendment. However, available N, MBN and inorganic N in leachate per g N added was highest in 100W and lowest in 100CM. In contrast, available P and leachate P concentration per g P added increased with proportion of CM. Measured available N and leachate inorganic N were lower than expected values whereas measured available P and inorganic P in the leachate were higher than expected. In mixes, CM appears to reduce N mineralisation in wheat whereas W stimulates P release from cow manure.
author	Le,Thi Huong Xuan Marschner,Petra
author_facet	Le,Thi Huong Xuan Marschner,Petra
author_sort	Le,Thi Huong Xuan
title	Mixing organic amendments with high and low C/N ratio influences nutrient availability and leaching in sandy soil
title_short	Mixing organic amendments with high and low C/N ratio influences nutrient availability and leaching in sandy soil
title_full	Mixing organic amendments with high and low C/N ratio influences nutrient availability and leaching in sandy soil
title_fullStr	Mixing organic amendments with high and low C/N ratio influences nutrient availability and leaching in sandy soil
title_full_unstemmed	Mixing organic amendments with high and low C/N ratio influences nutrient availability and leaching in sandy soil
title_sort	mixing organic amendments with high and low c/n ratio influences nutrient availability and leaching in sandy 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=S0718-95162018000400952
work_keys_str_mv	AT lethihuongxuan mixingorganicamendmentswithhighandlowcnratioinfluencesnutrientavailabilityandleachinginsandysoil AT marschnerpetra mixingorganicamendmentswithhighandlowcnratioinfluencesnutrientavailabilityandleachinginsandysoil
_version_	1714206588038807552

Mixing organic amendments with high and low C/N ratio influences nutrient availability and leaching in sandy soil

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