Hahn Noel G, Isaacs Rufus
Department of Entomology, Michigan State University, 202 CIPS, East Lansing, MI 48824. Current address: Department of Entomology, Rutgers University, 93 Lipman Drive, New Brunswick, NJ 08903.
Department of Entomology, Michigan State University, 202 CIPS, East Lansing, MI 48824.
J Econ Entomol. 2015 Aug;108(4):1910-4. doi: 10.1093/jee/tov130. Epub 2015 May 26.
Infestation by blueberry gall midge, Dasineura oxycoccana Johnson, is common in northern highbush blueberries, but its effects on crop productivity are unknown. We examined whether infestation by blueberry gall midge reduces flower bud production when compared with uninfested shoots, and how infestation at different times affects the crop response. From the fall of 2009 to the spring of 2011, the number of flower buds on infested and uninfested shoots of blueberry bushes was counted and compared. Despite causing branching of vegetative growth, there was no significant effect of infestation on flower bud production. During the summer of 2010, damaged shoots were marked throughout the growing season in June, July, or August. The number of flower buds set per shoot declined with later infestation dates, and shoots damaged in August had significantly fewer buds than those damaged in June and July. We discuss the implications of these findings for management of blueberry gall midge in northern highbush blueberry.
蓝莓瘿蚊（Dasineura oxycoccana Johnson）在北方高丛蓝莓中普遍存在，但它对作物产量的影响尚不清楚。我们研究了与未受侵害的嫩枝相比，蓝莓瘿蚊的侵害是否会减少花芽的形成，以及不同时间受到侵害如何影响作物的反应。从2009年秋季到2011年春季，对蓝莓灌木丛中受侵害和未受侵害嫩枝上的花芽数量进行了计数和比较。尽管蓝莓瘿蚊会导致营养生长分枝，但它对花芽形成没有显著影响。在2010年夏季，在整个生长季节的6月、7月或8月对受损嫩枝进行标记。每根嫩枝上形成的花芽数量随着受侵害日期的推迟而减少，8月受损的嫩枝上的花芽明显少于6月和7月受损的嫩枝。我们讨论了这些发现对北方高丛蓝莓中蓝莓瘿蚊管理的意义。
