تاثیر سیلیسیم بر شاخص ‏های رشد و کاهش خسارت بیماری سفیدک پودری آهار (Zinnia elegans Jacq. ʻMagellanʼ)

Subject Areas : Journal of Ornamental Plants

مریم  میرصفای مقدم ¹ (دانشجوی کارشناسی ارشد، گروه علوم باغبانی، واحد رشت، دانشگاه آزاداسلامی، رشت ، ایران)
محمد نقی  پاداشت دهکایی ² (گروه پژوهشی محصولات باغبانی، مرکز آموزش و تحقیقات منابع طبیعی و کشاورزی گیلان، رشت، ایران)

Received: 2016-01-30 Accepted : 2016-04-28 Published : 2016-09-01

Keywords: سیلیکات سدیم, سفیدک پودری, سیلیسیم(Si), گل آهار,

Abstract :

به منظور بررسی اثرات سیلیسیم بر شاخص‏های رشد و کاهش خسارت بیماری سفیدک پودری آهار (Zinnia elegans Jacq. ʻMagellanʼ)، آزمایشی به صورت فاکتوریل در قالب طرح بلوک‏های کامل تصادفی با دو عامل در هشت تیمار و سه تکرار انجام گرفت. عامل اول، غلظت سیلیسیم در چهار سطح شامل 0، 50، 100، 150 میلی‏گرم بر لیتر و عامل دوم، روش کاربرد در دو سطح شامل محلول‏پاشی و خاکی بود. بر اساس غلظت و روش کاربرد سیلیسیم با کاربرد این ماده، چندین شاخص باغبانی گیاه بهبود یافت. میزان سیلیسیم گیاهان تیمار شده (100 و 150 میلی­گرم بر لیتر سیلیسیم به روش محلول پاشی) در مقایسه با گیاهان شاهد به طور معنی­داری افزایش یافت. شدت بیماری سفیدک پودری با کاربرد سیلیسیم کاهش یافت. نتایج مطالعه ما ثابت کرد که تیمارهای محلول پاشی نسبت به تیمارهای خاکی تاثیر بیشتری در کنترل بیماری دارند.  

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