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- W1574114663 abstract "Article recu le 22 aout 2014, accepte le 10 octobre 2014. Les associations culturales presentent plusieurs avantages lorsque le choix des especes vegetales et les modes de culture, y compris les recoltes, sont reflechis. Cette etude preliminaire a ete menee dans la province du Shandong (Chine) pour mieux caracteriser l'effet de deux associations, celles de ble (Triticum aestivum L.)/colza (Brassica napus L.) et de ble/pois (Pisum sativum L.) sur les populations de pucerons et d'auxiliaires aphidiphages. Les pucerons observes sur les talles de ble ont ete significativement plus abondants dans la culture pure de ble durant les deux semaines qui ont precede leur pic de population, en comparaison aux associations. Quant aux auxiliaires aphidiphages, significativement plus de coccinelles ont ete observees dans les associations en comparaison a la culture pure, durant leur pic d'abondance. Des pieges jaunes a eau ont egalement ete utilises pour evaluer la diversite et l'abondance des especes d'auxiliaires adultes. L'espece parasitoide Aphidius gifuensis (Ashmead) a ete majoritaire. Parmi les predateurs, Propylea japonica (Thunberg) et Harmonia axyridis (Pallas) ont ete les especes les plus abondantes. Cette etude contribue a mieux connaitre le potentiel des associations culturales avec du ble en tant que methode de controle durable des populations de pucerons dans cette region de Chine. Mots-cles: associations culturales, ble, pucerons, Chine. Crop associations have several advantages when plant species and crop production methods, including harvesting, are well selected. This preliminary study was conducted in the Shandong province (China) to better characterize the effect of wheat (Triticum aestivum L.)/oilseed rape (Brassica napus L.) and wheat/pea (Pisum sativum L.) associations on the aphid and aphidophagous beneficial populations. Aphids observed on wheat tillers were significantly more abundant in the pure stand of wheat during the two weeks prior to their population peak, compared with crop associations. Considering the aphidophagous beneficials, significantly more ladybirds were observed in the associations, compared with the pure stand during their abundance peak. Yellow pan traps were also used to assess the diversity and abundance of adult beneficial species. The parasitoid species Aphidius gifuensis (Ashmead) was prevalent. Among predators, Propylea japonica (Thunberg) and Harmonia axyridis (Pallas) were the most abundant species. This study contributes to better understand the potential of crop associations with wheat as a sustainable method to control aphid populations in this region of China." @default.
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- W1574114663 date "2014-12-16" @default.
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- W1574114663 title "Effets de deux associations culturales à base de blé sur les populations de pucerons (Homoptera: Aphididae) et d’auxiliaires aphidiphages: étude préliminaire menée en Chine" @default.
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