Root decomposition at high and low N supply throughout a crop rotation

Root decomposition at high and low N supply throughout a crop rotation

Soil nitrogen (N) dynamics can be modified by cover crops in rotations with cereals. Although, roots area major source of N, little is known about the dynamics of root decomposition of cash and cover crops. The objective of this study was to assess the effects that cover crop species have on i) the decompositionof spring wheat roots during the growth of cover crops, and ii) the decomposition of cover crop rootsduring the growing season of spring wheat. The experiment aimed also at comparing three non-winterhardy cover crops of varying shoot C-N ratios under low and high N input levels of 6 and 12 g N m-² y -¹respectively. The experiment included spring wheat (Triticum aestivum L.) as the main crop and non - winter hardy cover crops (yellow mustard (Sinapis alba L.), phacelia (Phacelia tanacetifolia Benth), andsunflower (Helianthus annuus L.) as well as bare soil fallow treatment. Minirhizotrons were used to non - destructively assess the spatial and temporal patterns of root growth and decomposition from 0.10 to1.00 m. Simultaneously, we grew all crops in soil columns to measure destructively C and N content in theroots. We concluded that wheat root decomposition was not affected by cover crop species. In contrast,during the growing season of wheat root decomposition of yellow mustard was on average twice as highfor phacelia and sunflower as a consequence of a higher production of roots with a significantly higher C-N ratio compared to the other cover crops.

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Main Authors: Herrera, Juan Manuel, Büchi, L., Rubio, Gerardo, Torres Guerrero, C., Wendling, M., Stamp, Peter, Pellet, D.
Format: Texto biblioteca
Language:eng
Subjects:COVER CROPS, ROOT TURN OVER, ROOT CARBON NITROGEN RATIO, WHEAT, RHIZOTRONS, MINIRHHIZOTRONSA,
Online Access:http://ceiba.agro.uba.ar/cgi-bin/koha/opac-detail.pl?biblionumber=45724
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spelling KOHA-OAI-AGRO:457242023-10-17T13:53:53Zhttp://ceiba.agro.uba.ar/cgi-bin/koha/opac-detail.pl?biblionumber=45724http://ceiba.agro.uba.ar/cgi-bin/koha/opac-detail.pl?biblionumber=http://ceiba.agro.uba.ar/cgi-bin/koha/opac-detail.pl?biblionumber=http://ceiba.agro.uba.ar/cgi-bin/koha/opac-detail.pl?biblionumber=http://ceiba.agro.uba.ar/cgi-bin/koha/opac-detail.pl?biblionumber=http://ceiba.agro.uba.ar/cgi-bin/koha/opac-detail.pl?biblionumber=AAGRoot decomposition at high and low N supply throughout a crop rotationHerrera, Juan ManuelBüchi, L.Rubio, GerardoTorres Guerrero, C.Wendling, M.Stamp, PeterPellet, D.textengapplication/pdfSoil nitrogen (N) dynamics can be modified by cover crops in rotations with cereals. Although, roots area major source of N, little is known about the dynamics of root decomposition of cash and cover crops. The objective of this study was to assess the effects that cover crop species have on i) the decompositionof spring wheat roots during the growth of cover crops, and ii) the decomposition of cover crop rootsduring the growing season of spring wheat. The experiment aimed also at comparing three non-winterhardy cover crops of varying shoot C-N ratios under low and high N input levels of 6 and 12 g N m-² y -¹respectively. The experiment included spring wheat (Triticum aestivum L.) as the main crop and non - winter hardy cover crops (yellow mustard (Sinapis alba L.), phacelia (Phacelia tanacetifolia Benth), andsunflower (Helianthus annuus L.) as well as bare soil fallow treatment. Minirhizotrons were used to non - destructively assess the spatial and temporal patterns of root growth and decomposition from 0.10 to1.00 m. Simultaneously, we grew all crops in soil columns to measure destructively C and N content in theroots. We concluded that wheat root decomposition was not affected by cover crop species. In contrast,during the growing season of wheat root decomposition of yellow mustard was on average twice as highfor phacelia and sunflower as a consequence of a higher production of roots with a significantly higher C-N ratio compared to the other cover crops.Soil nitrogen (N) dynamics can be modified by cover crops in rotations with cereals. Although, roots area major source of N, little is known about the dynamics of root decomposition of cash and cover crops. The objective of this study was to assess the effects that cover crop species have on i) the decompositionof spring wheat roots during the growth of cover crops, and ii) the decomposition of cover crop rootsduring the growing season of spring wheat. The experiment aimed also at comparing three non-winterhardy cover crops of varying shoot C-N ratios under low and high N input levels of 6 and 12 g N m-² y -¹respectively. The experiment included spring wheat (Triticum aestivum L.) as the main crop and non - winter hardy cover crops (yellow mustard (Sinapis alba L.), phacelia (Phacelia tanacetifolia Benth), andsunflower (Helianthus annuus L.) as well as bare soil fallow treatment. Minirhizotrons were used to non - destructively assess the spatial and temporal patterns of root growth and decomposition from 0.10 to1.00 m. Simultaneously, we grew all crops in soil columns to measure destructively C and N content in theroots. We concluded that wheat root decomposition was not affected by cover crop species. In contrast,during the growing season of wheat root decomposition of yellow mustard was on average twice as highfor phacelia and sunflower as a consequence of a higher production of roots with a significantly higher C-N ratio compared to the other cover crops.COVER CROPSROOT TURN OVERROOT CARBON NITROGEN RATIOWHEATRHIZOTRONSMINIRHHIZOTRONSAEuropean journal of agronomy
institution UBA FA
collection Koha
country Argentina
countrycode AR
component Bibliográfico
access En linea
En linea
databasecode cat-ceiba
tag biblioteca
region America del Sur
libraryname Biblioteca Central FAUBA
language eng
topic COVER CROPS
ROOT TURN OVER
ROOT CARBON NITROGEN RATIO
WHEAT
RHIZOTRONS
MINIRHHIZOTRONSA
COVER CROPS
ROOT TURN OVER
ROOT CARBON NITROGEN RATIO
WHEAT
RHIZOTRONS
MINIRHHIZOTRONSA
spellingShingle COVER CROPS
ROOT TURN OVER
ROOT CARBON NITROGEN RATIO
WHEAT
RHIZOTRONS
MINIRHHIZOTRONSA
COVER CROPS
ROOT TURN OVER
ROOT CARBON NITROGEN RATIO
WHEAT
RHIZOTRONS
MINIRHHIZOTRONSA
Herrera, Juan Manuel
Büchi, L.
Rubio, Gerardo
Torres Guerrero, C.
Wendling, M.
Stamp, Peter
Pellet, D.
Root decomposition at high and low N supply throughout a crop rotation
description Soil nitrogen (N) dynamics can be modified by cover crops in rotations with cereals. Although, roots area major source of N, little is known about the dynamics of root decomposition of cash and cover crops. The objective of this study was to assess the effects that cover crop species have on i) the decompositionof spring wheat roots during the growth of cover crops, and ii) the decomposition of cover crop rootsduring the growing season of spring wheat. The experiment aimed also at comparing three non-winterhardy cover crops of varying shoot C-N ratios under low and high N input levels of 6 and 12 g N m-² y -¹respectively. The experiment included spring wheat (Triticum aestivum L.) as the main crop and non - winter hardy cover crops (yellow mustard (Sinapis alba L.), phacelia (Phacelia tanacetifolia Benth), andsunflower (Helianthus annuus L.) as well as bare soil fallow treatment. Minirhizotrons were used to non - destructively assess the spatial and temporal patterns of root growth and decomposition from 0.10 to1.00 m. Simultaneously, we grew all crops in soil columns to measure destructively C and N content in theroots. We concluded that wheat root decomposition was not affected by cover crop species. In contrast,during the growing season of wheat root decomposition of yellow mustard was on average twice as highfor phacelia and sunflower as a consequence of a higher production of roots with a significantly higher C-N ratio compared to the other cover crops.
format Texto
topic_facet COVER CROPS
ROOT TURN OVER
ROOT CARBON NITROGEN RATIO
WHEAT
RHIZOTRONS
MINIRHHIZOTRONSA
author Herrera, Juan Manuel
Büchi, L.
Rubio, Gerardo
Torres Guerrero, C.
Wendling, M.
Stamp, Peter
Pellet, D.
author_facet Herrera, Juan Manuel
Büchi, L.
Rubio, Gerardo
Torres Guerrero, C.
Wendling, M.
Stamp, Peter
Pellet, D.
author_sort Herrera, Juan Manuel
title Root decomposition at high and low N supply throughout a crop rotation
title_short Root decomposition at high and low N supply throughout a crop rotation
title_full Root decomposition at high and low N supply throughout a crop rotation
title_fullStr Root decomposition at high and low N supply throughout a crop rotation
title_full_unstemmed Root decomposition at high and low N supply throughout a crop rotation
title_sort root decomposition at high and low n supply throughout a crop rotation
url http://ceiba.agro.uba.ar/cgi-bin/koha/opac-detail.pl?biblionumber=45724
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AT rubiogerardo rootdecompositionathighandlownsupplythroughoutacroprotation
AT torresguerreroc rootdecompositionathighandlownsupplythroughoutacroprotation
AT wendlingm rootdecompositionathighandlownsupplythroughoutacroprotation
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