Validation and usefulness of Colorado potato beetle development simulations, performed by the system SimLep 3
Andrzej Wójtowicz
sekretariat@iorpib.poznan.plInstytut Ochrony Roślin, Poznań (Poland)
Erich Jörg
Dienstleistungszentrum Ländlicher Raum (DLR), Rheinhessen-Nahe-Hunsrück Rüdesheimer Str. 60–68, 55545 Bad Kreuznach (Germany)
Abstract
A field experiment aimed at validation of forecasts performed by the decision support system SimLep 3 was carried out in the years 2003–2005. The SimLep 3 simulates the phenological dates of Colorado potato beetle population development, taking into account air temperature and the results of field inspections performed at the beginning of eggs laying period. Each year full agreement between real and forecasted maximum abundance of young larvae date was observed. Moreover the results of simulations, describing the first appearance of larvae L1 and L3, were also much reliable. However in 2003 and 2005 the real maximum abundance of eggs differed with the forecasted one. The study demonstrates also that chemical treatment recommended by SimLep 3, guarantees effective protection of potato plantations from damages caused by Colorado potato beetle. Insecticide applications carried out after these periods were less effective.
Keywords:
SimLep, Colorado potato beetle, forecastReferences
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Authors
Erich JörgDienstleistungszentrum Ländlicher Raum (DLR), Rheinhessen-Nahe-Hunsrück Rüdesheimer Str. 60–68, 55545 Bad Kreuznach Germany
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Copyright (c) 2006 Andrzej Wójtowicz, Erich Jörg
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