caa a22 4500 386361487 CHVBK 20180307111917.0 cr unu---uuuuu 161130e198909 xx s 000 0 eng 10.4039/Ent121803-9 doi S0008347X00035707 pii (NATIONALLICENCE)cambridge-10.4039/Ent121803-9 ECONOMIC INJURY LEVELS AND ECONOMIC THRESHOLDS FOR THE GREEN APPLE BUG, LYGOCORIS COMMUNIS (KNIGHT) (HEMIPTERA: MIRIDAE), IN QUEBEC APPLE ORCHARDS [Elektronische Daten] Economic injury levels and economic thresholds for nymphs of Lygocoris communis (Knight) were defined in apple orchards, using the beating technique. These were determined with 1987 apple market value and chemical control costs. Economic thresholds were established, assuming a 24-h period required for control implementation. Highly significant relationships were found between the damage at harvest and the captures of young nymphs of L. communis. The economic injury levels ranged from 0.4 to 5.8 young nymphs per sample unit depending on the sample unit and insecticide used. Copyright © Entomological Society of Canada 1989 Michaud O. Department of Entomology, Macdonald College of McGill University, Ste-Anne-de-Bellevue, Quebec, Canada H9X 1C0 Stewart R.K. Department of Entomology, Macdonald College of McGill University, Ste-Anne-de-Bellevue, Quebec, Canada H9X 1C0 Boivin Guy Research Station, Research Branch, Agriculture Canada, St-Jean-sur-Richelieu, Quebec, Canada J3B 6Z8 The Canadian Entomologist Cambridge University Press 121/9(1989-09), 803-808 0008-347X 121:9<803 1989 121 TCE https://doi.org/10.4039/Ent121803-9 text/html Onlinezugriff via DOI 1 research-article jats NATIONALLICENCE 856 40 https://doi.org/10.4039/Ent121803-9 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Michaud O. Department of Entomology, Macdonald College of McGill University, Ste-Anne-de-Bellevue, Quebec, Canada H9X 1C0 NATIONALLICENCE 700 1- Stewart R.K. Department of Entomology, Macdonald College of McGill University, Ste-Anne-de-Bellevue, Quebec, Canada H9X 1C0 NATIONALLICENCE 700 1- Boivin Guy Research Station, Research Branch, Agriculture Canada, St-Jean-sur-Richelieu, Quebec, Canada J3B 6Z8 NATIONALLICENCE 773 0- The Canadian Entomologist Cambridge University Press 121/9(1989-09), 803-808 0008-347X 121:9<803 1989 121 TCE CC0 http://creativecommons.org/publicdomain/zero/1.0 nationallicence BK010053 XK010053 XK010000 NATIONALLICENCE NATIONALLICENCE NL-cambridge