Author
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Yokoyama, Victoria |
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Submitted to: Entomology Society of America Pacific Branch Meeting
Publication Type: Abstract Only Publication Acceptance Date: 2/18/2004 Publication Date: 2/19/2005 Citation: Yokoyama, V.Y. 2005. Mortality of cereal leaf beetle in compressed hay exports. Entomology Society of America Pacific Branch Meeting, February 27 - March 2, 2005, Pacific Grove, California. Interpretive Summary: Technical Abstract: Bale compression was investigated as a quarantine treatment to control cereal leaf beetle, Oulema melanopus (L.), in large-size bales of exported hay. Adults were collected on cultivated oats near Banks, Oregon, July 2004. The insects (n = 2,512) were placed in each of two pockets of a fabric bag (20 cm wide by 30 cm long) that was lowered into the compression chamber of the baler. The chamber was filled with chopped timothy hay, compressed (32 kg/cm² of pressure) into large bales (120 cm wide by 120 cm long by 78 cm high), and wrapped with polypropylene fabric. Five bales with eight fabric bags per bale were prepared in this manner. The fabric bags containing cereal leaf beetle adults were recovered from the bales after compression and immediately evaluated for survival. No adults survived the large-bale compression procedure. Adult survival (n = 353) in non-compressed controls was 98.3%. Compression alone was found to be an efficacious treatment to control large numbers of cereal leaf beetle adults introduced into large-size, polypropylene fabric-wrapped bales. |
