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Ecological Study of Beet Flea Beetle, Chaetocnema tibialis (Illiger). (Chrysomelidae: Coleoptera) on Sugarbeet, Beta vulgaris L., and its Control

دراسة بيئية للخنفساء البرغوثية، tibialis Chaetocnema Beta vulgaris L.) Illiger) على الشوندر السكري و مكافحتها في منطقة حمص

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 Publication date 2010
and research's language is العربية
 Created by Shamra Editor




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The seasonal activity of beet flea beetle, Chaetocnema tibialis (Illiger), adults was studied on sugar beet varieties at Homs Region during 2008 season. Results obtained indicate that the beet flea beetle, Chaetocnema tibialis (Illiger) adults was started at the 2nd week of May to all varieties in the 1st and 2nd dates of plantation. The number tended to increase, rather gradually, from early June reaching peak (65.9 and 97.9 holes/25 leaves) for two dates. Two peaks occurred during 2008 season, ware as follows: • The 1st peak occurred in the 4th week and the 2nd week of June (65.9 and 97.9 holes/25 leaves) for 1st and 2nd dates, respectively. • The 2nd peak occurred in the 4th week of July (118.42 and 364.14 holes/25 leaves) for 1st and 2nd dates, respectively. The results obtained indicate, that Vico sugerbeet variety was highest susceptible (50.99 and 116.45 holes/25 leaves) for the 1st and 2nd dates, meanwhile, Ramona and Prognos were lowest infested. The infestation started with quite low holes (2.96 holes/25 leaves) at the 3rd week of May and increased gradually at the 4th week of June with 65.90 holes/leaf, and in end of season arrived to (118.42 holes/25 leaves). The infestation percentage increased by beet flea beetle in the 2nd date (the 1st week of February) with twice of infested on the 1st date (the 1st half of January). Six pesticides were evaluated against beet flea beetle, results showed that Cyperino pesticide gave the highest effective percentage (90.88%) followed Cypermethrin by (90.69%), in comparison with Nimadol pesticide (49.35%) after two week of treatment.


Artificial intelligence review:
Research summary
تتناول هذه الدراسة النشاط الموسمي لخنفساء البرغوث البنجرية، Chaetocnema tibialis (Illiger)، على أصناف البنجر السكري في منطقة حمص خلال موسم 2008. أظهرت النتائج أن نشاط البالغين من الخنفساء يبدأ في الأسبوع الثاني من مايو ويصل إلى ذروته في أوائل يونيو مع تسجيل 65.9 و97.9 ثقوب لكل 25 ورقة في تواريخ مختلفة. لوحظت ذروتان للنشاط في الأسبوع الرابع من يونيو والأسبوع الثاني من يوليو، حيث سجلت 118.42 و364.14 ثقوب لكل 25 ورقة على التوالي. أظهرت النتائج أن صنف البنجر Vico كان الأكثر عرضة للإصابة، بينما كانت أصناف Ramona وPrognos الأقل إصابة. تم تقييم فعالية ستة مبيدات حشرية ضد الخنفساء، وأظهرت النتائج أن مبيد Cyperino كان الأكثر فعالية بنسبة 90.88%، يليه Cypermethrin بنسبة 90.69%، مقارنة بمبيد Nimadol الذي كانت فعاليته 49.35% بعد أسبوعين من المعالجة.
Critical review
دراسة نقدية: تعتبر هذه الدراسة مهمة لفهم النشاط الموسمي لخنفساء البرغوث البنجرية وتأثيرها على أصناف البنجر السكري المختلفة، مما يساعد في تطوير استراتيجيات مكافحة فعالة. ومع ذلك، يمكن تحسين الدراسة من خلال تضمين بيانات إضافية حول تأثير العوامل البيئية الأخرى مثل درجة الحرارة والرطوبة على نشاط الخنفساء. كما يمكن توسيع نطاق الدراسة لتشمل مناطق جغرافية أخرى لتعميم النتائج. بالإضافة إلى ذلك، يمكن تحسين تحليل البيانات باستخدام تقنيات إحصائية متقدمة لتقديم فهم أعمق للعوامل المؤثرة على نشاط الخنفساء.
Questions related to the research
  1. ما هو النشاط الموسمي لخنفساء البرغوث البنجرية Chaetocnema tibialis؟

    يبدأ نشاط البالغين من خنفساء البرغوث البنجرية في الأسبوع الثاني من مايو ويصل إلى ذروته في أوائل يونيو، مع تسجيل ذروتين إضافيتين في الأسبوع الرابع من يونيو والأسبوع الثاني من يوليو.

  2. ما هي أصناف البنجر السكري الأكثر عرضة للإصابة بخنفساء البرغوث البنجرية؟

    أظهرت النتائج أن صنف البنجر Vico كان الأكثر عرضة للإصابة، بينما كانت أصناف Ramona وPrognos الأقل إصابة.

  3. ما هي المبيدات الحشرية الأكثر فعالية ضد خنفساء البرغوث البنجرية؟

    أظهرت الدراسة أن مبيد Cyperino كان الأكثر فعالية بنسبة 90.88%، يليه Cypermethrin بنسبة 90.69%، مقارنة بمبيد Nimadol الذي كانت فعاليته 49.35% بعد أسبوعين من المعالجة.

  4. ما هي التوصيات لتحسين مكافحة خنفساء البرغوث البنجرية بناءً على هذه الدراسة؟

    توصي الدراسة باستخدام مبيدات Cyperino وCypermethrin نظراً لفعاليتهما العالية. كما يمكن تحسين استراتيجيات المكافحة من خلال مراقبة النشاط الموسمي للخنفساء وتطبيق المبيدات في الفترات الزمنية المناسبة.


References used
Baselga A. and Novoa F. 2000a. Los Chrysomelidae (Coleoptera) de los sistemas dunares de Galicia (Noroeste de Espan˜ a). Bol. Real Soc. Espan˜ ola Hist. Nat. (Sec. Biol.) 96(12): 113–124
Baselga A. and Novoa F. 2000b. Los Chrysomelidae (Coleoptera) de la Sierra de Ancares, Noroeste de la Espan˜ a (Coleoptera). Nouvelle Rev. d’Entomol. (N.S.) 17(2): 165–180
Baselga A. and Novoa F. 2002. Los Chrysomelidae (Coleoptera) de las sierras orientales de Ourense (Galicia, noroeste de la Penı´nsula Ibe´ rica). Bol. Asoc. Espan˜ ola Entomol. 26(3–4): 57– 73
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The efficacy of insecticide and plant extracts were tested against beet flea beetle, Chaetocnema tibialis (Illiger) during 2008 and 2009 seasons. Six pesticides were evaluated against beet flea beetle, results showed that Cyperino gave the highest effective percentage (90.88) followed by Cypermethrin (90.69%), in comparison with Nimadol (49.35%) after two weeks of treatment. Four plant extracts were evaluated against beet flea beetle in comparison with Sopreen. Results showed that Melia azedarach L. extract gave the highest effective percentage (60.81) followed Styrax officinalis L. leaves and branches and Capsicum annuum L. extracts by 31.35, 28.44 and 16.57, respectively, in comparison with Sopreen (58.55%) after 7 days of treatment. Percentage of efficacy decreased gradually by increasing the period of exposure after treatment for plant extracts from 63.19% after 3 days to 51.80% after 10 days of Melia azedarach L. extract. Whereas the efficacy percentage of Sopreen increased from 41.67% after 3 days to 74.57% after 10 days of treatment.
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