caa a22 4500 388092750 CHVBK 20180307125256.0 cr unu---uuuuu 161130e199908 xx s 000 0 eng 10.4039/Ent131567-4 doi S0008347X0001018X pii (NATIONALLICENCE)cambridge-10.4039/Ent131567-4 COMPARISON OF PLASTIC-LINED TRENCHES AND EXTRUDED PLASTIC TRAPS FOR CONTROLLING LEPTINOTARSA DECEMLINEATA (COLEOPTERA: CHRYSOMELIDAE) [Elektronische Daten] The efficacy of an extruded plastic trap placed on the ground was measured against plastic-lined trenches used to prevent the colonization of potato fields by walking overwintered Leptinotarsa decemlineata (Say). Laboratory comparisons showed that the original standard extruded trap did not capture as many adult beetles as the plastic-lined trench but that this could be corrected by abrading its surface. Beetles took longer to be trapped by the extruded trap than by the trench and walked away more frequently. The efficacy of the two barriers was unaffected by light simulated rain. Field tests in 1996 and 1997 confirmed that plastic-lined trenches can reduce adult abundance and egg deposition within field even when beetle populations were low. The original extruded trap did not significantly reduce egg deposition. However, it is suggested that a modified extruded trap could be used together with the plastic-lined trench to provide temporary closure of untrenched field sections used for farm equipment access or to surround small fields. Copyright © Entomological Society of Canada 1999 Boiteau G. Potato Research Centre, Agriculture and Agri-Food Canada, P.O. Box 20280, 850 Lincoln Road, Fredericton, New Brunswick, Canada E3B 427 Osborn W.P.L. Potato Research Centre, Agriculture and Agri-Food Canada, P.O. Box 20280, 850 Lincoln Road, Fredericton, New Brunswick, Canada E3B 427 The Canadian Entomologist Cambridge University Press 131/4(1999-08), 567-572 0008-347X 131:4<567 1999 131 TCE https://doi.org/10.4039/Ent131567-4 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.4039/Ent131567-4 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Boiteau G. Potato Research Centre, Agriculture and Agri-Food Canada, P.O. Box 20280, 850 Lincoln Road, Fredericton, New Brunswick, Canada E3B 427 NATIONALLICENCE 700 1- Osborn W.P.L. Potato Research Centre, Agriculture and Agri-Food Canada, P.O. Box 20280, 850 Lincoln Road, Fredericton, New Brunswick, Canada E3B 427 NATIONALLICENCE 773 0- The Canadian Entomologist Cambridge University Press 131/4(1999-08), 567-572 0008-347X 131:4<567 1999 131 TCE CC0 http://creativecommons.org/publicdomain/zero/1.0 nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-cambridge