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phosphine resistance

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Catalogue: Broadacre Field Crops DAFF QLD
The images in the gallery relate to resistance of insects to phosphine and protectant insecticides in stored grain... A map of Australia showing areas of strong resistance to phosphine.. A figure showing weevils in stored grain in unsealed silos, and the treatment by phosphine fumigation...
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Catalogue: Broadacre Field Crops DAFF QLD
The images in the gallery relate to resistance of insects to phosphine and protectant insecticides in stored grain... A map of Australia showing areas of strong resistance to phosphine.. A figure showing weevils in stored grain in unsealed silos, and the treatment by phosphine fumigation...
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Catalogue: GRDC Final Reports
An industry workshop was held to determine the demand for a national strategy for phosphine # resistance and to define a mechanism to establish such a strategy... The workshop demonstrated there is a demand for a national strategy for managing phosphine # resistance... There is an ongoing need for monitoring as well as the development of rapid and sensitive diagnostic tools...
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Catalogue: Ground Cover
In Australia, more than 80 per cent of all stored grain is treated with phosphine, which means it is the chemical most in contact with insects, creating the greatest chance for insects to develop resistance... Two projects under the CRC for National Plant Biosecurity are looking at the genetics of insect resistance to phosphine to understand the development of resistance and to rapidly identify resistant insects... One of the greatest threats to emerge is the development of resistance to phosphine in the lesser grain borer (Rhyzopertha dominica), one of the most common pests of stored grain...
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Catalogue: GRDC Final Reports
Australia is well placed to meet this demand through its extensive use of fumigation, sealed storages and flow-through systems, both on-farm and in the central handling system... One of the key economic outcomes of this research is to prolong the life of phosphine on which Western Australia is so reliant avoiding the enormous extra cost of alternative technologies... There was a previous report on the finding of high resistance in a sample collected in a vacuum cleaner bag from Oman and Tribolium castaneum from southern China in polished rice...
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Catalogue: GRDC Final Reports
The expected outcomes of this project were detailed in the project specification document: "Early warning of the emergence of new resistance and spread of known resistance... Once resistance was detected and we had confirmed that its potential impact on the grain industry would be significant we initiated an extensive program to establish fumigation protocols to combat it... Our survey has shown that resistance is common in L. bostrychophila and occurs in the other two species (Table 6)...
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Catalogue: Ground Cover
Lead researcher Dr David Schlipalius from Queensland DAFF and UQ's School of Biological Sciences says a major advantage of DNA testing is that it can be used on dead insects... Senior researcher Dr Paul Ebert of UQ's School of Biological Sciences says: "We have discovered that the genetic variation associated with resistance also makes the insects more vulnerable to other forms of attack... A research collaborator from Queensland DAFF, Dr Pat Collins, says phosphine resistance would be a disaster for those countries that rely on it heavily - and that includes Australia; 80 per cent of our cereal grains are treated by phosphine fumigation...
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Catalogue: GRDC YouTube channel
For more than 40 years Phosphine has been a safe and reliable means of controlling grain storage insects... 210.62: Chris Newman: 213.189: at the situation on this particular farm, Michelle had 216.86: already indicated that it was starting to look very interesting and so I first went 222.829: up to the farm and assessed the situation, discovered what the 228.11: fumigation practice was; looked at the silos; looked 230.75: at the hygiene around the farm and decided that it was possible that we could do an eradication 237.15: of the insects on the farm... And so I put an environmental trap under the 282.43: silos which was essentially a large rubbish bin full of 285.19: grain and sieved the insects out of that on a regular basis and submitted them to the 290.47: labs for Michelle to test and found that there was 294.05: no strong resistance left in the insects that were flying 297.62: into the farm...
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Catalogue: Ground Cover
The application of commonly recommended management principles has eradicated a strain of grain-storage insects with strong phosphine resistance located on a Western Australian farm... It is believed to be the first time that elimination of on-farm grain-storage insects with strong phosphine resistance has been scientifically documented and confirmed in Australia and possibly the world... Hygiene treatments used at the Wubin farm to eradicate the resistant RFB population included: pressure washing inside empty silos, storage surrounds, handling equipment and machinery; the application of contact chemical insecticide to kill insects in grain residues at the base of silos and the removal of waste for burial; and treating clean, empty silos with diatomaceous earth protectant to prevent reinfestation...
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Catalogue: Ground Cover
The application of commonly recommended management principles has eradicated a strain of grain-storage insects with strong phosphine resistance located on a Western Australian farm... It is believed to be the first time that elimination of on-farm grain-storage insects with strong phosphine resistance has been scientifically documented and confirmed in Australia and possibly the world... Hygiene treatments used at the Wubin farm to eradicate the resistant RFB population included: pressure washing inside empty silos, storage surrounds, handling equipment and machinery; the application of contact chemical insecticide to kill insects in grain residues at the base of silos and the removal of waste for burial; and treating clean, empty silos with diatomaceous earth protectant to prevent reinfestation...
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