Cultivation offers effective management of subterranean clover damping-off and root disease

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Abstract

Soil cultivation studies involving subterranean clover pastures were undertaken utilizing field cores from five farms and two in-field trials. Tap and lateral root disease in cores was less (p < .001) severe and root and shoot weights greater (p < .001) following simulated cultivation. Germination and severity of root disease were both affected (p < .005) by three-way interactions with cultivation, cultivar and field site. Cultivation in cores suppressed tap root disease for cultivars Meteora and Riverina across the five sites and Seaton Park for two sites. In-field trials confirmed cultivation reduces root disease severity and increases germination and plant productivity. The best in-field treatment was cultivation + fumigation that reduced (p < .05) tap and lateral root disease and increased nodulation and root and shoot weights for Riverina, Seaton Park and Woogenellup. Cultivation + fumigation also increased (p < .05) germination for Woogenellup and Seaton Park. There were negative correlations (all p < .001) between tap and lateral root disease with nodulation (R2 = .85, R2 = .58, respectively); tap root disease with root and shoot weight (R2 = .58, R2 = .854, respectively); and lateral root disease with root and shoot weight (R2 = .83, R2 = .64 respectively). This study highlights the close relationship between severe root disease and reduced nodulation, likely explaining much of the widespread poor nodulation in subterranean clover pastures. This study confirms that damping-off and root disease can be mitigated by cultivation, offering producers flexibility in disease management, especially where autumn-winter feed shortages occur on a regular basis.

Original languageEnglish
Pages (from-to)785-793
JournalGrass and Forage Science
Volume72
Issue number4
DOIs
Publication statusPublished - Dec 2017

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damping-off
root diseases
damping off
Trifolium subterraneum
nodulation
tap roots
shoots
shoot
fumigation
germination
field experimentation
pastures
cultivar
pasture
cultivars
disease severity
tillage
disease control

Cite this

@article{3361ef8f8468479b87409af1b0e596b6,
title = "Cultivation offers effective management of subterranean clover damping-off and root disease",
abstract = "Soil cultivation studies involving subterranean clover pastures were undertaken utilizing field cores from five farms and two in-field trials. Tap and lateral root disease in cores was less (p < .001) severe and root and shoot weights greater (p < .001) following simulated cultivation. Germination and severity of root disease were both affected (p < .005) by three-way interactions with cultivation, cultivar and field site. Cultivation in cores suppressed tap root disease for cultivars Meteora and Riverina across the five sites and Seaton Park for two sites. In-field trials confirmed cultivation reduces root disease severity and increases germination and plant productivity. The best in-field treatment was cultivation + fumigation that reduced (p < .05) tap and lateral root disease and increased nodulation and root and shoot weights for Riverina, Seaton Park and Woogenellup. Cultivation + fumigation also increased (p < .05) germination for Woogenellup and Seaton Park. There were negative correlations (all p < .001) between tap and lateral root disease with nodulation (R2 = .85, R2 = .58, respectively); tap root disease with root and shoot weight (R2 = .58, R2 = .854, respectively); and lateral root disease with root and shoot weight (R2 = .83, R2 = .64 respectively). This study highlights the close relationship between severe root disease and reduced nodulation, likely explaining much of the widespread poor nodulation in subterranean clover pastures. This study confirms that damping-off and root disease can be mitigated by cultivation, offering producers flexibility in disease management, especially where autumn-winter feed shortages occur on a regular basis.",
keywords = "Trifolium subterraneum, Annual pastures, Cultivation, Cultural practices, Damping-off, Fumigation, Root disease, Subterranean clover",
author = "You, {M. P.} and K. Guo and D. Nicol and D. Kidd and Ryan, {M. H.} and K. Foster and Barbetti, {M. J.}",
year = "2017",
month = "12",
doi = "10.1111/gfs.12282",
language = "English",
volume = "72",
pages = "785--793",
journal = "Grass and Forage Science",
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TY - JOUR

T1 - Cultivation offers effective management of subterranean clover damping-off and root disease

AU - You, M. P.

AU - Guo, K.

AU - Nicol, D.

AU - Kidd, D.

AU - Ryan, M. H.

AU - Foster, K.

AU - Barbetti, M. J.

PY - 2017/12

Y1 - 2017/12

N2 - Soil cultivation studies involving subterranean clover pastures were undertaken utilizing field cores from five farms and two in-field trials. Tap and lateral root disease in cores was less (p < .001) severe and root and shoot weights greater (p < .001) following simulated cultivation. Germination and severity of root disease were both affected (p < .005) by three-way interactions with cultivation, cultivar and field site. Cultivation in cores suppressed tap root disease for cultivars Meteora and Riverina across the five sites and Seaton Park for two sites. In-field trials confirmed cultivation reduces root disease severity and increases germination and plant productivity. The best in-field treatment was cultivation + fumigation that reduced (p < .05) tap and lateral root disease and increased nodulation and root and shoot weights for Riverina, Seaton Park and Woogenellup. Cultivation + fumigation also increased (p < .05) germination for Woogenellup and Seaton Park. There were negative correlations (all p < .001) between tap and lateral root disease with nodulation (R2 = .85, R2 = .58, respectively); tap root disease with root and shoot weight (R2 = .58, R2 = .854, respectively); and lateral root disease with root and shoot weight (R2 = .83, R2 = .64 respectively). This study highlights the close relationship between severe root disease and reduced nodulation, likely explaining much of the widespread poor nodulation in subterranean clover pastures. This study confirms that damping-off and root disease can be mitigated by cultivation, offering producers flexibility in disease management, especially where autumn-winter feed shortages occur on a regular basis.

AB - Soil cultivation studies involving subterranean clover pastures were undertaken utilizing field cores from five farms and two in-field trials. Tap and lateral root disease in cores was less (p < .001) severe and root and shoot weights greater (p < .001) following simulated cultivation. Germination and severity of root disease were both affected (p < .005) by three-way interactions with cultivation, cultivar and field site. Cultivation in cores suppressed tap root disease for cultivars Meteora and Riverina across the five sites and Seaton Park for two sites. In-field trials confirmed cultivation reduces root disease severity and increases germination and plant productivity. The best in-field treatment was cultivation + fumigation that reduced (p < .05) tap and lateral root disease and increased nodulation and root and shoot weights for Riverina, Seaton Park and Woogenellup. Cultivation + fumigation also increased (p < .05) germination for Woogenellup and Seaton Park. There were negative correlations (all p < .001) between tap and lateral root disease with nodulation (R2 = .85, R2 = .58, respectively); tap root disease with root and shoot weight (R2 = .58, R2 = .854, respectively); and lateral root disease with root and shoot weight (R2 = .83, R2 = .64 respectively). This study highlights the close relationship between severe root disease and reduced nodulation, likely explaining much of the widespread poor nodulation in subterranean clover pastures. This study confirms that damping-off and root disease can be mitigated by cultivation, offering producers flexibility in disease management, especially where autumn-winter feed shortages occur on a regular basis.

KW - Trifolium subterraneum

KW - Annual pastures

KW - Cultivation

KW - Cultural practices

KW - Damping-off

KW - Fumigation

KW - Root disease

KW - Subterranean clover

UR - http://www.scopus.com/inward/record.url?scp=85013129977&partnerID=8YFLogxK

U2 - 10.1111/gfs.12282

DO - 10.1111/gfs.12282

M3 - Article

VL - 72

SP - 785

EP - 793

JO - Grass and Forage Science

JF - Grass and Forage Science

SN - 0142-5242

IS - 4

ER -