Management of aphids in Western Australian lupin crops

Page last updated: Friday, 25 May 2018 - 10:24am

The extent of damage varies between seasons, but losses can be severe in years that favour aphid population development. Lupins are most vulnerable to aphids during budding and flowering, as severe feeding damage on growing tips can cause buds to drop, flowers to abort and reduced pod set. Some lupin varieties are more susceptible to aphids than others.

Damage caused by aphids

Virus transmission

Aphids are vectors of two important lupin viruses: cucumber mosaic virus (CMV) and bean yellow mosaic virus (BYMV). Yield losses are greatest when aphids have arrived early into the crop. BYMV is not seed borne, whereas CMV can be. Lupin varieties differ in their susceptibility to viruses. See links in the 'See also' section for further information on these viruses.

Feeding damage

Lupins are most vulnerable to aphids during budding and flowering, as severe feeding damage on growing tips can cause buds to drop, flowers to abort and reduced pod set. Aphids produce a sticky substance called honeydew which coats the plant surface. Sooty mould grows on this honeydew and can further reduce plant health.

The lupin variety grown will influence the potential size of the aphid population and subsequent damage. Narrow leaf lupin varieties vary in their susceptibility to aphids. Albus lupin are considered to be resistant to aphids.

Table 1 Susceptibility of narrow leaf lupin varieties grown in Western Australia to aphid colonisation and aphid borne viruses: cucumber mosaic virus (CMV; seed borne) and bean yellow mosaic virus (BYMV). Key: VS=very susceptible, S=susceptible, MS= moderately susceptible, MR=moderately resistant, R=resistant, VR=very resistant. Source: Pulse Breeding Australia.
Variety Aphids CMV (seed borne) BYMV
Belara S MS S
Coromup R MR MS
Danja MR MR S
Gungurru MRMS MS S
Jenabillup R MRMS MR
Jindalee MRMS MS S
Kalya R MRMS S
Mandelup R MRMS S
Merrit MRMS MS S
Myallie MS MRMS MS
PBA Barlock R MR MS
PBA Gunyidi R MRMS MS
PBA Jurien R MRMS MR
Quilinock MS MR MR
Tallerack VS S MS
Tanjil R R MS
Wonga R R MS
Yorrel VS MS S

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