نوع مقاله : مقاله پژوهشی


1 دانشجوی سابق کارشناسی ارشد، گروه گیاه‌پزشکی، دانشکدة علوم زراعی، دانشگاه علوم کشاورزی و منابع طبیعی ساری، ساری، ایران

2 دانشیار، گروه گیاه‌پزشکی، دانشکدة علوم زراعی، دانشگاه علوم کشاورزی و منابع طبیعی ساری، ساری، ایران


بالشتک معمولی مرکبات، Pulvinaria aurantii (Cockerell) مهم‌ترین آفت مرکبات در استان مازندران، ایران است. برای تصمیم‌گیری مناسب به‌منظور کنترل آفت محاسبة سطحی از تراکم آفت که موجب زیان اقتصادی می‌شود، ضروری است. سطح زیان اقتصادیP. aurantii روی پرتقال Washington navel در سال (91-1390) در ساری (شمال ایران) بررسی شد. در سال اول، شش تیمار از تراکم‌های مختلف کیسة تخم آفت (0، 1، 4، 7، 10 و 13) هر تیمار با هشت تکرار و در سال دوم، پنج تیمار (0، 5، 10، 15 و 20) با هفت تکرار روی برگ‌ها در قالب طرح کامل تصادفی ارزیابی شدند. سطح زیان اقتصادی (EIL) برای حشره‌کش‌های اتیون، کلرپایریفوس، بوپروفزین و دیازینون به ترتیب 133، 125، 110 و 131 کیسة تخم بر سرشاخه‌ها با شمار میانگین 1/7، 7/6، 9/5 و 7 میوه برای نسل اول در سال 1390 و 242، 228، 201 و 238 با شمار میانگین 1/7، 68/6، 88/5 و 01/7 میوه به ترتیب برای حشره‌کش‌های یادشده برای نسل اول آفت در سال 1391 و همچنین 203، 191، 168 و 200 با شمار میانگین 1/7، 68/6، 88/5 و 01/7 برای نسل دوم بالشتک در سال 1391 محاسبه شد.


عنوان مقاله [English]

Determination of economic injury level of the citrus cushion, Pulvinaria aurantii (Hem.: Coccidae) in conventional citrus orchards

نویسندگان [English]

  • Ahmad Reza Amozegar 1
  • Mohammad Reza Damavandian 2
  • Behnam Amiri Besheli 2

1 Former M.Sc. Student, Department of Plant Protection, Faculty of Cultural Science, Sari Agricultural Sciences and Natural Resources University, Sari, Iran

2 Associate Professor, Department of Plant Protection, Faculty of Cultural Science, Sari Agricultural Sciences and Natural Resources University, Sari, Iran

چکیده [English]

The orange Pulvinaria scale, Pulvinaria aurantii (Cockerell) is the most important pest of citrus in Mazandaran, Iran. The calculation of economic injury level is essential for the appropriate decision to Pest control. The economic injury level (EIL) of P. aurantii on Washington navel orange was studied during two years (2011 and 2012) in Sari (north of Iran). In the first year, six treatments of different densities of pest ovisacs (0, 1, 4, 7, 10 and 13) and each treatment with 8 replications and in the second year, five treatments (0, 5, 10, 15 and 20), each treatment with 7 replications on the leaves were evaluated in a completely randomized design (CRD). Economic injury level (EIL) was calculated as 133, 125, 110 and 131 ovisacs per branches with an average number of 7.1, 6.7, 5.9 and 7 fruits for the first generation of 2011 and 242, 228, 201, and 238 ovi sacs per branches with an average number 7.1, 6.68, 5.88 and 7.01 fruits for the first generation of 2012, as well as 203, 191, 168 and 200 ovisacs per branches with an average number 7.1, 6.68, 5.88 and 7.01 fruits for the second generation of 2012, for ethion, chlorpyrifos, buprofezin and diazinon pesticides, respectively.

کلیدواژه‌ها [English]

  • Pulvinaria aurantii
  • Economic injury level
  • pesticide
  • ovisac
  • citrus fruit
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