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Pest Manag Sci

Title:		Kairomone-assisted trap cropping for protecting spring oilseed rape (Brassica napus) from pollen beetles (Coleoptera: Nitidulidae)
Author(s):		Thoming G; Solhaug KA; Norli HR;
Address:		"Division of Biotechnology and Plant Health, Norwegian Institute of Bioeconomy Research, As, Norway. Faculty of Environmental Sciences and Natural Resource Management, Norwegian University of Life Sciences, As, Norway"
Journal Title:		Pest Manag Sci
Year:		2020
Volume:		20200520
Issue:		9
Page Number:		3253 - 3263
DOI:		10.1002/ps.5882
ISSN/ISBN:		1526-4998 (Electronic) 1526-498X (Linking)
Abstract:		"BACKGROUND: Pollen beetles are key pests in oilseed rape (OSR) production. These beetles use visual and olfactory cues to locate their host plants at specific phenological stages, hence trap cropping may represent an alternative pest control strategy. In this study, a trap crop strategy for spring OSR was developed. To elaborate such a trap cropping system, a pest control measure that eradicates the attracted beetles in the trap crop before they migrate further into the main crop was included in the final trap cropping strategy. RESULTS: Testing yellow-flowering turnip rape and one yellow- and two cream-coloured flowering OSR cultivars as potential crops in different trap cropping strategies, we found that pollen beetles clearly preferred turnip rape over the cream-coloured and yellow OSR cultivars, and preferred the yellow OSR cultivar over the two cream-coloured cultivars. This behaviour was related to the plant growth stage and associated volatile and colour signals of the tested cultivars. Using turnip rape as a trap crop and testing kairomone- or insecticide-assisted trap cropping as the pest control strategy was as effective as compared with whole fields treated with a standard pesticide. CONCLUSION: Combining a turnip rape cultivar as trap crop with kairomone traps placed in the trap crop as a killing agent may enable renunciation of pesticides in spring OSR production. (c) 2020 Society of Chemical Industry"
Keywords:		Animals *Brassica napus *Brassica rapa *Coleoptera Pheromones/pharmacology Pollen Brassica rapa Brassicogethes spp.oilseed rape semiochemicals trap crop turnip rape;
Notes:		"MedlineThoming, Gunda Solhaug, Knut A Norli, Hans R eng BRAKORN project no. 244210/Norges Forskningsrad/ England 2020/05/02 Pest Manag Sci. 2020 Sep; 76(9):3253-3263. doi: 10.1002/ps.5882. Epub 2020 May 20"