با همکاری انجمن‏‌ بیماری شناسی گیاهی ایران

نوع مقاله : حشره شناسی کشاورزی

نویسندگان

1 بخش گیاهپزشکی، دانشکده کشاورزی، دانشگاه شیراز، شیراز، ایران

2 بخش گیاهپزشکی- دانشکده کشاورزی- دانشگاه شیراز

چکیده

ب
بررسی اثرات جداگانه و تلفیقی خاک دیاتومه با عصاره میوه زیتون تلخ، Melia azedarach، علیه حشرات کامل 1 تا 3 روزه شپشه آرد، Tribolium confusum (Col., Tenebrionidae) وسوسک چهارنقطه‌ای حبوبات Callosobruchus maculatus (Col., Chrysomelidae)، در سه تکرار به‌شیوه تماس با باقیمانده آفت‌کش روی کاغذ صافی انجام و سنجش تلفات 24 و 48 ساعت بعد انجام شد. بعد از 48 ساعت، میزان LC50 فرمولاسیون Permaguard® خاک دیاتومه علیه شپشه آرد 6/4 برابر کمتر از بازه 24 ساعت به‌دست آمد. در مورد گونه دیگر نیز این میزان 2/3 برابر کاهش یافت. با گذر زمان از 24 به 48 ساعت، اثر عصاره زیتون تلخ بر هر دو گونه افزایش یافت. همچنین بین عصاره میوه زیتون تلخ و خاک دیاتومه، در هر دو گونه و هر دو زمان مورد بررسی، رابطه سینرژیستی وجود داشت که با افزایش زمان در معرض بودن این میزان افزایش یافت. لذا کاربرد هم‌زمان این دو ترکیب باعث بهبود اثر بخشی این ترکیب‌ها می‌شود.

کلیدواژه‌ها

عنوان مقاله [English]

The lethal effects of diatomaceous earth and aqueous-methanolic neem extract, Melia azedarach as a single and mixed application on Tribolium confusum and Callosobruchus maculatus

نویسندگان [English]

  • Faezeh Bagheri 1
  • Neda Mofidi 1
  • Mohammadali Akrami 2

1 Department of Plant Protection, School of Agriculture, Shiraz University, Shiraz, Iran.

2 Dept. Plant Protection, School of Agriculture, Shiraz University

چکیده [English]

Evaluation of single and integrated effects of diatomaceous earth and neem fruit extract, Melia azedarach, against 1-to-3-day-old insects of flour weevil, Tribolium confusum (Col., Tenebrionidae) and cowpea seed beetle Callosobruchus maculatus (Col., Chrysomelidae). Three replications were performed by contact toxicity by filter paper residue test and the mortality was measured 24 and 48 hours later. After 48 hours interval, the LC50 level of Permaguard® formulation of diatomaceous earth against flour weevil was 4.6 times less than 24 hours interval. In the case of other species, this amount decreased by 3.2 times. Over time, from 24 to 48 hours intervals, the effect of the neem extract on both species increased. Also, there was a synergistic relationship between neem fruit extract and diatomaceous earth in both species and both times studied, which increased with increasing exposure time. Therefore, the simultaneous use of these two compounds could improves the effectiveness of these compounds.

کلیدواژه‌ها [English]

  • Diatomaceous earth
  • integrated effects
  • neem fruit
  • pests of stored products
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