Can. Ent. 115: 89-91 (1983) Simulated windrow experiments revealed that 32.0k 8.4% or 3rd-instar Agromyza frontella (Rondani) larvae completed development and formed puparia in alfalfa hay during field curing; 1st-and 2nd-instar larvae suffered almost complete mortality. Under a management schedule where first harvest was at 10% bloom, adult emergence was 45% higher from soil under windrowed hay than from soil under strips immediately raked. Development of A. frontella in hay being field-cured is discussed in relation to crop pest management and crop management options.
ResumeLors d'exptriences d'andainage simulC, 32.0?8.4% des larves de 3ikme stade de la mineuse Agromyza frontella (Rondani) ou complCtC leur dtveloppement et form6 le puparium a partir de foin en stchage sur le champ; les larves des ler et 2ikme stades sont mortes en grande majoritt. Dans un programme de coupe ou la premibe rtcolte fut effectuCe a 10% de floraison, I'tmergence des adultes a partir du sol sous le foin andainC s'est avCrte de 45% suptrieure a celle partir des bandes de sol immkdiatement dtnudtes. Le dtveloppement d'A. frontella dans le foin en stchage sur le champ est considtrt en rapport avec la lutte intCgrte et les difftrentes options culturales.
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