interaction of different nitrogen fertilization regimes of canola with mustard aphid (lipaphis erysimi kalt.) and the predatory gall midge (aphidoletes aphidimyza rondani)

نویسندگان

فرنوش فلاح پور

دکتری بوم شناسی زراعی، گروه زراعت دانشکدة کشاورزی، دانشگاه فردوسی مشهد رضا قربانی

استاد گروه زراعت دانشکدة کشاورزی، دانشگاه فردوسی مشهد مهدی نصیری محلاتی

استاد گروه زراعت دانشکدة کشاورزی، دانشگاه فردوسی مشهد مجتبی حسینی

استادیار گروه گیاه پزشکی دانشکدة کشاورزی، دانشگاه فردوسی مشهد

چکیده

the host plant quality not only influences on herbivorous insects but also indirectly could impact on their natural enemies’ performance. the current study was conducted to determine the effect of different nitrogen fertilization levels of canola (brassica napus l.) on life table parameters of the predatory gall midge, aphidoletes aphidimyza rondani; diptera: cecidomyiidae, in feeding of mustard aphid, lipaphis erysimi kalt.; hemiptera: aphididae, under controlled temperature (day: 25± 2, night: 19± 2) and humidity (60± 10%) conditions. mustard aphids were reared on canola plants grown under four nitrogen fertilization levels including 0, 0.055, 0.11, and 0.165 g n. kg soil-1 to produce different prey quality. the developmental time of the predatory gall midge growth stages were recorded daily and life table parameters were evaluated by two-sex life table procedure. the results showed that increased nitrogen fertilization of canola significantly decreased the developmental time of larva and pupa of the predatory gal midge and increased the oviposition period of females. actually, using high and medium nitrogen fertilization levels improved the performance of the predatory gall midge. in addition, the maximum amounts of net reproduction rate (32.54 offspring per individual) and the intrinsic rate of increase (0.163 d-1) with significant differences were observed in the mediate nitrogen fertilization level (0.11 g n.kg soil-1). so, this level could introduce as the best level for the predatory midge growth.

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برهم‌کنش بین سطوح مختلف کوددهی نیتروژن در گیاه کلزا با شتة ‌خردل (Lipaphis erysimi Kalt.) و پشة شکارگر (Aphidoletes aphidimyza Rondani)

کیفیت گیاه میزبان نه تنها بر آفات گیاه‌خوار، بلکه به‌صورت غیرمستقیم می‌تواند بر توانایی زیستی دشمنان طبیعی آن‌ها نیز اثر بگذارد. این پژوهش به‌منظور بررسی اثر مقادیر مختلف کوددهی نیتروژن در گیاه کلزا (Brassica napus L.) بر پارامترهای جدول زندگی پشة شکارگر (Aphidoletes aphidimyza Rondani; Diptera: Cecidomyiidae) در تغذیه از شتة خردل (Lipaphis erysimi Kalt.; Hemiptera: Aphididae) تحت شرایط کنترل‌ش...

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عنوان ژورنال:
کنترل بیولوژیک آفات و بیماری های گیاهی

جلد ۴، شماره ۱، صفحات ۱-۱۲

کلمات کلیدی
the host plant quality not only influences on herbivorous insects but also indirectly could impact on their natural enemies’ performance. the current study was conducted to determine the effect of different nitrogen fertilization levels of canola (brassica napus l.) on life table parameters of the predatory gall midge aphidoletes aphidimyza rondani; diptera: cecidomyiidae in feeding of mustard aphid lipaphis erysimi kalt.; hemiptera: aphididae under controlled temperature (day: 25± 2 night: 19± 2) and humidity (60± 10%) conditions. mustard aphids were reared on canola plants grown under four nitrogen fertilization levels including 0 0.055 0.11 and 0.165 g n. kg soil 1 to produce different prey quality. the developmental time of the predatory gall midge growth stages were recorded daily and life table parameters were evaluated by two sex life table procedure. the results showed that increased nitrogen fertilization of canola significantly decreased the developmental time of larva and pupa of the predatory gal midge and increased the oviposition period of females. actually using high and medium nitrogen fertilization levels improved the performance of the predatory gall midge. in addition the maximum amounts of net reproduction rate (32.54 offspring per individual) and the intrinsic rate of increase (0.163 d 1) with significant differences were observed in the mediate nitrogen fertilization level (0.11 g n.kg soil 1). so this level could introduce as the best level for the predatory midge growth.

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