Authors: Maarten van Helden
Research Team: Thomas Heddle, Farah Al-Jawahiri, Clare Svilans
SARDI Sustainable Systems
Funded By: SAGIT
Project Title: Cereal Aphid Risk Assessment in South Australia
Peer Review: Greg Baker (SARDI)
- Russian Wheat Aphids (RWA) are most abundant in low rainfall areas.
- Autumn infestations are slightly higher in early sown crops but did not build up in spring.
- No clear preference was shown by RWA for any of the tested cereals (La Trobe Barley, RAC 2388 and Scepter Wheat, Aurora Durum Wheat).
- RWA migration in winter and spring is important and can result in damage on young or insufficiently developed (GS<30) crops.
- Seed treatments did prevent infestations in autumn, but no significant yield increase was observed.