Use efficiency and residual effect of 15N-labelled ryegrass green manure over a 9-year field micro-plot experiment

A 9-year field micro-plot experiment was conducted to investigate the use efficiency, residual effect, and fate of 15N-labelled ryegrass green manure in soil-crop system, so as to offer useful information for reasonable application of green manures on meadow burozem. Results showed that high applica...

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Autores principales:	Lu,C, Chen,X, Shen,S, Shi,Y, Ma,J, Zhao,M
Lenguaje:	English
Publicado:	Chilean Society of Soil Science / Sociedad Chilena de la Ciencia del Suelo 2013
Materias:	15N-labelled green manure N use efficiency percent recovery percent loss fate
Acceso en línea:	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-95162013000300003
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spelling	oai:scielo:S0718-951620130003000032014-09-16Use efficiency and residual effect of 15N-labelled ryegrass green manure over a 9-year field micro-plot experimentLu,CChen,XShen,SShi,YMa,JZhao,M 15N-labelled green manure N use efficiency percent recovery percent loss fate A 9-year field micro-plot experiment was conducted to investigate the use efficiency, residual effect, and fate of 15N-labelled ryegrass green manure in soil-crop system, so as to offer useful information for reasonable application of green manures on meadow burozem. Results showed that high application rate (600g per plot) of 15N-labelled ryegrass green manure resulted in reduction of percent recovery (PR)15Nplant and PR15Nsoil by 25.0% and 12.8%, respectively, and elevation of percent loss (PL)15N by 31.2%, as compared with low application rate. The 15N utilization and loss could be divided into three phases, i.e., high uptake and fast loss in the first and second growth seasons, low uptake and slow loss in the following four growth seasons, and little change in the last three growth seasons. This suggested that the green manure N had a long residual effect but its loss was faster at early phase, and thus, rational application of green manure was of considerable importance to reduce its N loss while improve its N use efficiency.info:eu-repo/semantics/openAccessChilean Society of Soil Science / Sociedad Chilena de la Ciencia del SueloJournal of soil science and plant nutrition v.13 n.3 20132013-09-01text/htmlhttp://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-95162013000300003en10.4067/S0718-95162013005000043
institution	Scielo Chile
collection	Scielo Chile
language	English
topic	15N-labelled green manure N use efficiency percent recovery percent loss fate
spellingShingle	15N-labelled green manure N use efficiency percent recovery percent loss fate Lu,C Chen,X Shen,S Shi,Y Ma,J Zhao,M Use efficiency and residual effect of 15N-labelled ryegrass green manure over a 9-year field micro-plot experiment
description	A 9-year field micro-plot experiment was conducted to investigate the use efficiency, residual effect, and fate of 15N-labelled ryegrass green manure in soil-crop system, so as to offer useful information for reasonable application of green manures on meadow burozem. Results showed that high application rate (600g per plot) of 15N-labelled ryegrass green manure resulted in reduction of percent recovery (PR)15Nplant and PR15Nsoil by 25.0% and 12.8%, respectively, and elevation of percent loss (PL)15N by 31.2%, as compared with low application rate. The 15N utilization and loss could be divided into three phases, i.e., high uptake and fast loss in the first and second growth seasons, low uptake and slow loss in the following four growth seasons, and little change in the last three growth seasons. This suggested that the green manure N had a long residual effect but its loss was faster at early phase, and thus, rational application of green manure was of considerable importance to reduce its N loss while improve its N use efficiency.
author	Lu,C Chen,X Shen,S Shi,Y Ma,J Zhao,M
author_facet	Lu,C Chen,X Shen,S Shi,Y Ma,J Zhao,M
author_sort	Lu,C
title	Use efficiency and residual effect of 15N-labelled ryegrass green manure over a 9-year field micro-plot experiment
title_short	Use efficiency and residual effect of 15N-labelled ryegrass green manure over a 9-year field micro-plot experiment
title_full	Use efficiency and residual effect of 15N-labelled ryegrass green manure over a 9-year field micro-plot experiment
title_fullStr	Use efficiency and residual effect of 15N-labelled ryegrass green manure over a 9-year field micro-plot experiment
title_full_unstemmed	Use efficiency and residual effect of 15N-labelled ryegrass green manure over a 9-year field micro-plot experiment
title_sort	use efficiency and residual effect of 15n-labelled ryegrass green manure over a 9-year field micro-plot experiment
publisher	Chilean Society of Soil Science / Sociedad Chilena de la Ciencia del Suelo
publishDate	2013
url	http://www.scielo.cl/scielo.php?script=sci_arttext&pid=S0718-95162013000300003
work_keys_str_mv	AT luc useefficiencyandresidualeffectof15nlabelledryegrassgreenmanureovera9yearfieldmicroplotexperiment AT chenx useefficiencyandresidualeffectof15nlabelledryegrassgreenmanureovera9yearfieldmicroplotexperiment AT shens useefficiencyandresidualeffectof15nlabelledryegrassgreenmanureovera9yearfieldmicroplotexperiment AT shiy useefficiencyandresidualeffectof15nlabelledryegrassgreenmanureovera9yearfieldmicroplotexperiment AT maj useefficiencyandresidualeffectof15nlabelledryegrassgreenmanureovera9yearfieldmicroplotexperiment AT zhaom useefficiencyandresidualeffectof15nlabelledryegrassgreenmanureovera9yearfieldmicroplotexperiment
_version_	1714206459789574144

Use efficiency and residual effect of 15N-labelled ryegrass green manure over a 9-year field micro-plot experiment

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