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Utilization of mechanical compression as a disinfestation technique for Hessian fly(Mayetiola destructor(say))in timothy hay:Field test

引用

International Journal of Agricultural and Biological Engineering 2011年第4期4卷 12-20页

作者： Lope G.Tabil S.Talebi M.D.Shaw W.J.Crerar Department of Chemical and Biological Engineering University of Saskatchewan57 Campus DriveSaskatoonSKS7N 5A9Canada

Baled timothy hay underwent testing at a hay processing plant in Canada to determine if mechanical compression(rebaling)could be used as a disinfestation protocol for Hessian fly(Mayetiola destructor(Say))*** sensitive films were randomly placed throughout the hay material,on the chamber walls,and in different orientations,to assess the hay compaction unit’s ability to induce the required pressure to crash a Hessian fly puparium in the *** to the pressure films were organdy cages containing wheat seedlings infested with Hessian fly *** variables which were tested included the hold time(0.5 and 2.0 s),applied pressure(10.34 and 12.41 MPa),and timothy hay quality(low-moisture first cut,high-moisture first cut and high-moisture second cut hay).A total of 36 tests were *** each test,10 Hessian fly cages and 10 pressure sensitive films were *** test cage contained approximately 168.56 Hessian fly puparia,translating into a total Hessian fly count of 60681 for the entire field *** of the pressure sensitive films showed that 100%of the hay experienced at least 200 kPa(29 psi)of *** the 75-day post experiment emergence period,0.0066%of the puparia survived,which may be due to the fact that the emerged puparia might have not been crushed and not subjected to a pressure of at least 20.6 *** applied pressures affected Hessian fly emergence by considerably reducing the number of puparia that ***,Hessian fly emerged from one of the cages in two *** of the Hessian fly puparia were destroyed irrespective of the applied pressure,hold time or hay quality.

关键词： mechanical compression Hessian fly disinfestation hay bale rebaling emergence

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