Nodulation of lucerne (Medicago sativa L.) roots: depth distribution and temporal variation

This study was undertaken in order to test whether the development of nodule density over the vegetation period is different in lucerne stands grown for 1, 2 or 3 years continuously. For rapidly assessing nodule density in the field, a modified profile wall method was applied. Nodules were counted o...

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Main Authors: F. Li, T. Kautz, R. Pude, U. Köpke
Format: Article
Language:English
Published: Czech Academy of Agricultural Sciences 2012-09-01
Series:Plant, Soil and Environment
Subjects:
Online Access:https://pse.agriculturejournals.cz/artkey/pse-201209-0006_nodulation-of-lucerne-medicago-sativa-l-roots-depth-distribution-and-temporal-variation.php
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author F. Li
T. Kautz
R. Pude
U. Köpke
author_facet F. Li
T. Kautz
R. Pude
U. Köpke
author_sort F. Li
collection DOAJ
description This study was undertaken in order to test whether the development of nodule density over the vegetation period is different in lucerne stands grown for 1, 2 or 3 years continuously. For rapidly assessing nodule density in the field, a modified profile wall method was applied. Nodules were counted on a vertical profile wall, after spraying away a 2 cm layer of soil. For validating this method nodule density was determined on roots washed from monolith samples. Field data indicate that there is a shift of nodulation towards deeper soil layers with increasing maturity of lucerne stands. In 1-year lucerne nodulation was limited virtually to the top 15 cm of soil. In the 15-30 cm soil layer and in the subsoil (30-80 cm), nodule density increased with the cropping duration (1 year < 2 years < 3 years). Temporal decreases in nodule density during the vegetation period associated with dry spells were more pronounced for 2-years as compared with 3-years lucerne.
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spelling doaj.art-f452111afe44450bae06d74d396135d82023-02-23T03:45:52ZengCzech Academy of Agricultural SciencesPlant, Soil and Environment1214-11781805-93682012-09-0158942442810.17221/314/2012-PSEpse-201209-0006Nodulation of lucerne (Medicago sativa L.) roots: depth distribution and temporal variationF. Li0T. Kautz1R. Pude2U. Köpke3Institute of Organic Agriculture, University of Bonn, Bonn, GermanyInstitute of Organic Agriculture, University of Bonn, Bonn, GermanyResearch Center Campus Klein-Altendorf, Rheinbach, GermanyInstitute of Organic Agriculture, University of Bonn, Bonn, GermanyThis study was undertaken in order to test whether the development of nodule density over the vegetation period is different in lucerne stands grown for 1, 2 or 3 years continuously. For rapidly assessing nodule density in the field, a modified profile wall method was applied. Nodules were counted on a vertical profile wall, after spraying away a 2 cm layer of soil. For validating this method nodule density was determined on roots washed from monolith samples. Field data indicate that there is a shift of nodulation towards deeper soil layers with increasing maturity of lucerne stands. In 1-year lucerne nodulation was limited virtually to the top 15 cm of soil. In the 15-30 cm soil layer and in the subsoil (30-80 cm), nodule density increased with the cropping duration (1 year < 2 years < 3 years). Temporal decreases in nodule density during the vegetation period associated with dry spells were more pronounced for 2-years as compared with 3-years lucerne.https://pse.agriculturejournals.cz/artkey/pse-201209-0006_nodulation-of-lucerne-medicago-sativa-l-roots-depth-distribution-and-temporal-variation.phpalfalfaperennial cultivationprofile wallsoil monolithsubsoil
spellingShingle F. Li
T. Kautz
R. Pude
U. Köpke
Nodulation of lucerne (Medicago sativa L.) roots: depth distribution and temporal variation
Plant, Soil and Environment
alfalfa
perennial cultivation
profile wall
soil monolith
subsoil
title Nodulation of lucerne (Medicago sativa L.) roots: depth distribution and temporal variation
title_full Nodulation of lucerne (Medicago sativa L.) roots: depth distribution and temporal variation
title_fullStr Nodulation of lucerne (Medicago sativa L.) roots: depth distribution and temporal variation
title_full_unstemmed Nodulation of lucerne (Medicago sativa L.) roots: depth distribution and temporal variation
title_short Nodulation of lucerne (Medicago sativa L.) roots: depth distribution and temporal variation
title_sort nodulation of lucerne medicago sativa l roots depth distribution and temporal variation
topic alfalfa
perennial cultivation
profile wall
soil monolith
subsoil
url https://pse.agriculturejournals.cz/artkey/pse-201209-0006_nodulation-of-lucerne-medicago-sativa-l-roots-depth-distribution-and-temporal-variation.php
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AT rpude nodulationoflucernemedicagosativalrootsdepthdistributionandtemporalvariation
AT ukopke nodulationoflucernemedicagosativalrootsdepthdistributionandtemporalvariation