Influence of forage legume species, seeding rate and seed size on competitiveness with annual ryegrass (Lolium rigidum) seedlings

Brian Dear, Andrew Hodge, Deirdre Lemerle, James Pratley, Beverley Orchard, Alan Kaiser

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

Annual legumes sown as short-term forage crops are an important non-chemical option for the control of herbicide-resistant annual ryegrass (Lolium rigidum L.). The relative ability of 5 annual forage legume species (Trifolium subterraneum L., T. michelianum Savi., T. alexandrinum L., Medicago murex Wild and Vicia benghalensis L.) to suppress annual ryegrass seedlings was examined in a glasshouse study. The experiment investigated the importance of legume species, seed size and seeding rate in influencing the relative competitiveness of the legumes. Balansa clover (T. michelianum) and berseem clover (T. alexandrinum), the smallest seeded of the legume species, were the most effective of the 5 legume species, when compared at equivalent seeding rates, at reducing ryegrass biomass. Legume leaf area and biomass were the 2 factors measured that were most closely associated with depressing ryegrass biomass and were themselves most influenced by legume species and seeding rate. Balansa clover and vetch (V. benghalensis) were the most effective at restricting the amount of light penetrating to 50% of the height of the canopy over a range of seeding rates. The study showed that the competitiveness of forage break crops can be optimised by maximising legume biomass through selecting small-seeded legume species with high relative growth rates and dense canopies and by increasing the seeding rate where seed costs are low.
Original languageEnglish
Pages (from-to)627-636
Number of pages10
JournalAnimal Production Science
Volume46
Issue number5
DOIs
Publication statusPublished - 2006

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Lolium rigidum
Lolium
forage legumes
Seedlings
Fabaceae
Seeds
sowing
legumes
seedlings
Medicago
seeds
Biomass
Vicia benghalensis
Vicia
Trifolium alexandrinum
forage crops
biomass
Medicago murex
break crops
canopy

Cite this

@article{fe9cdbb050a44ba6836a754f1ba68179,
title = "Influence of forage legume species, seeding rate and seed size on competitiveness with annual ryegrass (Lolium rigidum) seedlings",
abstract = "Annual legumes sown as short-term forage crops are an important non-chemical option for the control of herbicide-resistant annual ryegrass (Lolium rigidum L.). The relative ability of 5 annual forage legume species (Trifolium subterraneum L., T. michelianum Savi., T. alexandrinum L., Medicago murex Wild and Vicia benghalensis L.) to suppress annual ryegrass seedlings was examined in a glasshouse study. The experiment investigated the importance of legume species, seed size and seeding rate in influencing the relative competitiveness of the legumes. Balansa clover (T. michelianum) and berseem clover (T. alexandrinum), the smallest seeded of the legume species, were the most effective of the 5 legume species, when compared at equivalent seeding rates, at reducing ryegrass biomass. Legume leaf area and biomass were the 2 factors measured that were most closely associated with depressing ryegrass biomass and were themselves most influenced by legume species and seeding rate. Balansa clover and vetch (V. benghalensis) were the most effective at restricting the amount of light penetrating to 50{\%} of the height of the canopy over a range of seeding rates. The study showed that the competitiveness of forage break crops can be optimised by maximising legume biomass through selecting small-seeded legume species with high relative growth rates and dense canopies and by increasing the seeding rate where seed costs are low.",
keywords = "Balansa clover, Berseem clover, Competition, Forage legumes, Herbicide resistance, Murex medic, Subterranean clover, Vetch, Weeds",
author = "Brian Dear and Andrew Hodge and Deirdre Lemerle and James Pratley and Beverley Orchard and Alan Kaiser",
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language = "English",
volume = "46",
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journal = "Animal Production Science",
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Influence of forage legume species, seeding rate and seed size on competitiveness with annual ryegrass (Lolium rigidum) seedlings. / Dear, Brian; Hodge, Andrew; Lemerle, Deirdre; Pratley, James; Orchard, Beverley; Kaiser, Alan.

In: Animal Production Science, Vol. 46, No. 5, 2006, p. 627-636.

Research output: Contribution to journalArticle

TY - JOUR

T1 - Influence of forage legume species, seeding rate and seed size on competitiveness with annual ryegrass (Lolium rigidum) seedlings

AU - Dear, Brian

AU - Hodge, Andrew

AU - Lemerle, Deirdre

AU - Pratley, James

AU - Orchard, Beverley

AU - Kaiser, Alan

N1 - Imported on 12 Apr 2017 - DigiTool details were: Journal title (773t) = Animal Production Science. ISSNs: 1836-0939;

PY - 2006

Y1 - 2006

N2 - Annual legumes sown as short-term forage crops are an important non-chemical option for the control of herbicide-resistant annual ryegrass (Lolium rigidum L.). The relative ability of 5 annual forage legume species (Trifolium subterraneum L., T. michelianum Savi., T. alexandrinum L., Medicago murex Wild and Vicia benghalensis L.) to suppress annual ryegrass seedlings was examined in a glasshouse study. The experiment investigated the importance of legume species, seed size and seeding rate in influencing the relative competitiveness of the legumes. Balansa clover (T. michelianum) and berseem clover (T. alexandrinum), the smallest seeded of the legume species, were the most effective of the 5 legume species, when compared at equivalent seeding rates, at reducing ryegrass biomass. Legume leaf area and biomass were the 2 factors measured that were most closely associated with depressing ryegrass biomass and were themselves most influenced by legume species and seeding rate. Balansa clover and vetch (V. benghalensis) were the most effective at restricting the amount of light penetrating to 50% of the height of the canopy over a range of seeding rates. The study showed that the competitiveness of forage break crops can be optimised by maximising legume biomass through selecting small-seeded legume species with high relative growth rates and dense canopies and by increasing the seeding rate where seed costs are low.

AB - Annual legumes sown as short-term forage crops are an important non-chemical option for the control of herbicide-resistant annual ryegrass (Lolium rigidum L.). The relative ability of 5 annual forage legume species (Trifolium subterraneum L., T. michelianum Savi., T. alexandrinum L., Medicago murex Wild and Vicia benghalensis L.) to suppress annual ryegrass seedlings was examined in a glasshouse study. The experiment investigated the importance of legume species, seed size and seeding rate in influencing the relative competitiveness of the legumes. Balansa clover (T. michelianum) and berseem clover (T. alexandrinum), the smallest seeded of the legume species, were the most effective of the 5 legume species, when compared at equivalent seeding rates, at reducing ryegrass biomass. Legume leaf area and biomass were the 2 factors measured that were most closely associated with depressing ryegrass biomass and were themselves most influenced by legume species and seeding rate. Balansa clover and vetch (V. benghalensis) were the most effective at restricting the amount of light penetrating to 50% of the height of the canopy over a range of seeding rates. The study showed that the competitiveness of forage break crops can be optimised by maximising legume biomass through selecting small-seeded legume species with high relative growth rates and dense canopies and by increasing the seeding rate where seed costs are low.

KW - Balansa clover

KW - Berseem clover

KW - Competition

KW - Forage legumes

KW - Herbicide resistance

KW - Murex medic

KW - Subterranean clover

KW - Vetch

KW - Weeds

U2 - 10.1071/EA04058

DO - 10.1071/EA04058

M3 - Article

VL - 46

SP - 627

EP - 636

JO - Animal Production Science

JF - Animal Production Science

SN - 1836-0939

IS - 5

ER -