caa a22 4500 386361061 CHVBK 20180307111915.0 cr unu---uuuuu 161130e198907 xx s 000 0 eng 10.4039/Ent121623-7 doi S0008347X00031886 pii (NATIONALLICENCE)cambridge-10.4039/Ent121623-7 A NEW PEST IN CANADA: RUSSIAN WHEAT APHID, DIURAPHIS NOXIA (MORDVILKO) (HOMOPTERA: APHIDIDAE) [Elektronische Daten] Russian wheat aphid, Diuraphis noxia, was first detected in Canada in late July 1988 when a few were found on late-maturing spring cereals in southern Alberta near the International Boundary between Coutts and Aden. By the end of September, after dispersal or further immigration influx, it was widespread in Alberta south of Highway #3 and in southwestern Saskatchewan as far east as Swift Current. By mid-October more than 30% of the plants in many fields of winter wheat and fall rye in southern Alberta and up to 20% of plants in some fields of fall rye in southwestern Saskatchewan were infested. In November, Russian wheat aphid was also found on winter wheat in the Creston Valley of British Columbia. Copyright © Entomological Society of Canada 1989 Jones J.W. Alberta Agriculture, Alberta Special Crops and Horticultural Research Centre, Brooks, Alberta, Canada T0J 0J0 Byers J.R. Agriculture Canada Research Station, Lethbridge, Alberta, Canada T1J 4B1 Butts R.A. Agriculture Canada Research Station, Lethbridge, Alberta, Canada T1J 4B1 Harris J.L. Saskatchewan Agriculture, Crop Protection Section, Regina, Saskatchewan, Canada S4S 0B1 The Canadian Entomologist Cambridge University Press 121/7(1989-07), 623-624 0008-347X 121:7<623 1989 121 TCE https://doi.org/10.4039/Ent121623-7 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.4039/Ent121623-7 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Jones J.W. Alberta Agriculture, Alberta Special Crops and Horticultural Research Centre, Brooks, Alberta, Canada T0J 0J0 NATIONALLICENCE 700 1- Byers J.R. Agriculture Canada Research Station, Lethbridge, Alberta, Canada T1J 4B1 NATIONALLICENCE 700 1- Butts R.A. Agriculture Canada Research Station, Lethbridge, Alberta, Canada T1J 4B1 NATIONALLICENCE 700 1- Harris J.L. Saskatchewan Agriculture, Crop Protection Section, Regina, Saskatchewan, Canada S4S 0B1 NATIONALLICENCE 773 0- The Canadian Entomologist Cambridge University Press 121/7(1989-07), 623-624 0008-347X 121:7<623 1989 121 TCE CC0 http://creativecommons.org/publicdomain/zero/1.0 nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-cambridge