Grains Research and Development

Date: 12.01.2015

Avoiding phosphine resistance in stored grain products

Lesser grain borer

Phosphine resistance in stored grain insects is a serious issue which, if not addressed, has the capacity to seriously damage Australia’s ability to maintain its market edge in the export of bulk grain.

With more than 80 per cent of Australian grain treated with phosphine, the Australian grains industry is highly reliant on the continued effectiveness of this fumigant as the cheapest and an efficient pest management method that allows the export of clean and "residue-free" grain.

It is therefore critically important that growers implement best practice when storing grain, particularly in relation to fumigation. Silos must meet the latest gas-tight standards and fumigant application rates and fumigation periods must be sufficient to reduce the incidence of phosphine resistance among grain storage pests. 

Phosphine resistance has increased in the past 10 years because of failed fumigation practices. All recorded levels of resistance found on-farm can be controlled when using label rates in sealed, gas-tight storage.

The insecticide dichlorvos is now out of reach of most grain growers and is more suited to bulk handler use, underlining the importance of phosphine to the industry and the need to respect is availability through proper use.


Grains Media Releases

Grain protectants build barrier against storage pests

Date: 21.12.2016

Growers planning to store grain in unsealed storages after this year’s harvest are being encouraged to consider using grain protectants to reduce the risk of insect pest infestations. more

Grains Media Releases

Post-harvest ideal time for stored grain fumigation

GRDC Project Code: PBR00001

Date: 21.12.2016

Within three weeks of the completion of harvest is the best time for a grower to fumigate stored grain to control insect pests, according to grain storage expert Ben White. more

Grains Ground Cover

Gas-tight a must for grain storage

GRDC Project Code: PRB00001

Issue #125

Author(s): Rebecca Barr

Date: 31.10.2016

Gas-tight storage is the key to successful on-farm grain storage, according to the GRDC’s southern Australia stored grains specialist and PCB Consulting director Peter Botta. Mr Botta says growers are choosing to store grain longer than in the past and the only way to safely store grain for an extended time is to use a gas-tight silo that allows effective fumigation.

Grains Research Updates

Grain storage get the economics right

GRDC Project Code: PRB00001

Author(s): Chris Warrick (Primary Business, GRDC Grain Storage Extension Program National Coordinator)

Date: 07.09.2016

• In the majority of cases, on-farm storage requires multiple financial benefits to cover the costs.
• The cheapest form of storage will be the one that suits your system, the grain being stored and the length of time it’s stored.
• Permanent on-farm storage is a 25+ year investment – it’s worth taking the time to do the numbers, consider the options and make informed decisions. more