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- W2183693157 abstract "An insect detection probe was recently developed to detect and identify the sounds of different stages and species of primary grain pest insects whilst operating directly from the surface of grain bulk. A acoustic with the same technology as the probe was also developed for hidden insect detection in grain samples. A campaign for the testing of the performances of the acoustic probe and the acoustic in field conditions was undertaken by the ONIGC in the cereal production area of western France after the 2007 harvest. The data on insect presence / absence from the acoustic probe were compared in parallel with the observation of insect presence / absence in grain samples taken at the acoustic probing location. This comparative study was carried out on 60 grain storage sites. The parallel grain samples were sieved after transport at the official (ONIGC, La Rochelle) prior to a check for hidden infestation by the laboratory acoustic device. Afterwards, samples were incubated at room temperature (23-25°C) before a second sieving 35 days later for recovery of emerged adults. From the data delivered by the acoustic probe compared to the insects recovered from the incubated grain samples, it was established that this equipment enables to predict the presence of live hidden insects with a confidence factor greater than 90%, as it is capable of detecting the activity of all insect stages, either adults or hidden stages, and a range of acoustic detection covering a 30 kg grain mass. The confirmation of hidden infestation performed with the lab device before sample incubation showed that convergence of diagnosis for presence / absence was observed in 79% of samples. This study confirmed the detection of a hidden infestation at a density level far lower than the threshold of conventional detection of adults by sieving alone. It enables to predict the risk of adult detection during a further storage period. Additionally, the early detection of insect presence in a grain bulk is valuable information for the grain storekeeper which enables optimisation of insect control strategy or grain lot sale before the insect presence become detectable with the reference method." @default.
- W2183693157 created "2016-06-24" @default.
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- W2183693157 date "2009-06-29" @default.
- W2183693157 modified "2023-10-18" @default.
- W2183693157 title "Experimental study of acoustic equipment for real-time insect detection in grain bins – Assessment of their potential for infestation risk prediction during long term storage periods" @default.
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