Emerging pests and the risk to farming systems

Abstract

Take home messages
• Russian wheat aphid (RWA) risk is largely dependent on an early break allowing its main wild host barley grass to complete a growth cycle before crops are sown.
• The RWA threshold calculator assists in deciding if control is required.
• No substantial outbreaks of RWA have been documented over the last 8 years.
• Fall army worm (FAW) has not been detected in South Australia so far.
• FAW migrants will reach SA but are unlikely to establish without suitable summer hosts and cold winters.
• Please keep reporting any suspected cases.