Resistant rusty grain beetles, one of the flat grain beetles, have been found throughout the grain supply chain, suggesting the need for adoption of area-wide integrated pest and resistance management.
Australian growers have relied heavily on phosphine fumigation to disinfest stored grain and meet market expectations for high-quality grain with nil tolerance to insects. However, reliance on one chemical over a long period of time has led to resistance.
The practice of requiring a phosphine gas reading of less than 0.3ppm in a spear sample taken from within the grain threatens costly rejection of truckloads of grain, including for operators who are following phosphine label directions.
Ground-level fumigation offers safety benefits to growers but takes a new set of skills to get right
Fumigation results rely on a gas-tight sealable storage to achieve the required gas concentrations and exposure times (C x T) to kill all insect pest life stages. In larger silos (150 to 2000 tonnes) recirculating gases using a small fan during the fumigation ensures rapid, uniform distribution of phosphine gas
Grain Storage Specialist Ben White demonstrates how to do a pressure test to ensure silos meet the Australian Standard 2628 -2010 for gas-tight sealing.
Grain storage specialist Chris Warrick presents a webinar on how to perform successful and reliable fumigations with phosphine on farm Pressure testing sealable silos Fumigating
Grain storage specialist Chris Warrick presents a webinar on why and how to pressure test on-farm grain storage Pressure testing sealable silos Pressure Testing Sealed
Grain storage specialist Chris Warrick presents a webinar on efficient monitoring and insect identification
Grain storage specialist Chris Warrick presents a webinar on aeration cooling