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date phosphine resistance

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Catalogue: Ground Cover
The Chinese, according to QDPI entoentomologist Manoj Nayak, have been using phosphine intensively for much longer than we have in Australia, and they have grain storage insect pests that show greater levels of phosphine resistance than any Australian grain storage pest... The work specifically compared resistance levels detected in the rice weevil, Sitophilus oryzae , and two psocid pests, Liposcelis entomophila and L. decolor , from Australia with respective resistant strains from China... The work showed that the time to population extinction of the Chinese strain of S. oryzae was four days and two days at phosphine concentrations of 200 and 700 ppm, compared with the resistant Australian strain ( see table )...
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Catalogue: Ground Cover
The Chinese, according to QDPI entoentomologist Manoj Nayak, have been using phosphine intensively for much longer than we have in Australia, and they have grain storage insect pests that show greater levels of phosphine resistance than any Australian grain storage pest... The work specifically compared resistance levels detected in the rice weevil, Sitophilus oryzae , and two psocid pests, Liposcelis entomophila and L. decolor , from Australia with respective resistant strains from China... The work showed that the time to population extinction of the Chinese strain of S. oryzae was four days and two days at phosphine concentrations of 200 and 700 ppm, compared with the resistant Australian strain ( see table )...
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