کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
2414572 1552097 2012 6 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Agri-environment scheme enhancing ecosystem services: A demonstration of improved biological control in cereal crops
موضوعات مرتبط
علوم زیستی و بیوفناوری علوم کشاورزی و بیولوژیک علوم زراعت و اصلاح نباتات
پیش نمایش صفحه اول مقاله
Agri-environment scheme enhancing ecosystem services: A demonstration of improved biological control in cereal crops
چکیده انگلیسی

The impact of two predatory guilds, epigeal and aerial natural enemies, on levels of cereal aphid control in winter wheat was examined on farms with contrasting proportions of grass margins, one of the most popular agri-environment options in England. In year 1, by 14 d after inoculation the aerial natural enemies alone had caused substantial reductions (88%) in numbers of cereal aphids compared to where no natural enemies were present. In contrast, epigeal predators achieved a 31% reduction, although this reached 88% after 28 d. In year 2, both aerial and epigeal natural enemies achieved over 87% control after 14 d. Aerial natural enemies were largely comprised of predatory Diptera and Linyphiidae (Araneae). Levels of control were positively related to the proportion of linear grass margins within 250, 500 and 750 m radii of the study arenas. There was weaker evidence that hedgerows decreased aphid control by epigeal predators. This study demonstrated that an agri-environment option can be used to improve an ecosystem service on arable farmland.


► Aerially dispersing natural enemies controlled cereal aphids faster than epigeal predators.
► Grass margins had positive effect on cereal aphid control.
► Agri-environment schemes can enhance ecosystem services.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Agriculture, Ecosystems & Environment - Volume 155, 15 July 2012, Pages 147–152
نویسندگان
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