بررسی تأثیر کاهش‌دهنده‌های کشش سطحی بر خصوصیات علف‌کشی مخلوط اسید استیک و اسید سیتریک

نوع مقاله : مقاله پژوهشی (کاربردی)

نویسندگان

استادیار، دانشکده علوم کشاورزی، دانشگاه فنی و حرفه‌ای، تهران، ایران.

چکیده

به‌منظور ارزیابی مویان‌های کاهش‌دهنده کشش سطحی در خصوصیات علف‌کشی نسبت‌های مختلف اسید استیک و اسید سیتریک، آزمایشی گلخانه‌ای به‌صورت فاکتوریل دو عاملی در قالب طرح کاملاً تصادفی با سه تکرار انجام شد. فاکتور­ اول دارای دوازده سطح شامل نسبت‌های اسید استیک به اسید سیتریک 100- صفر، 80-20، 60-40 و 50-50 درصد در غلظت‌های 2، 5، 10 درصد از نسبت‌های بیان شده که به‌عنوان محلول نهایی برای محلول‌پاشی در نظر گرفته شد. فاکتور دوم شامل کاربرد مویان‌های CDEA، LAE، SLS و KECO همراه با مخلوط اسید استیک و اسید سیتریک و به‌کارنبردن مویان به‌عنوان شاهد بود. نتایج این آزمایش نشان داد در نسبت‌های بالاتر اسید استیک به اسید سیتریک وزن خشک، سطح برگ یولاف و خردل وحشی، کاهش معنی‌دار و درصد مرگ‌ومیر افزایش معنی‌داری یافت. کاربرد مویان‌ها همراه با مخلوط‌های اسید استیک و اسید سیتریک خاصیت علف‌کشی را به‌ویژه در دوزهای 5 و 10 درصد بیش از دو برابر افزایش دادند. براساس نتایج این آزمایش، کاربرد نسبت‌های اسید استیک به اسید سیتریک 100-0 و80-20 درصد در غلظت‌های 5 و 10 درصد به همراه مویان‌های CDEA یا LAE بالاترین کارایی را برای از بین بردن علف‌های هرز به‌صورت غیرانتخابی داشت. 

کلیدواژه‌ها

موضوعات


عنوان مقاله [English]

Effects of Surface Active Agents on Herbicidal Properties of Acetic Acid and Citric Acid Mixture

نویسندگان [English]

  • Saeed Reza Yaghoobi
  • Abolfazl Lotfi
Assistant Professor, Faculty of Agricultural Science, Technical and Vocational University (TVU), Tehran, Iran.
چکیده [English]

In order to evaluate the effects of surfactants on the herbicidal properties of different acetic acid to citric acid ratios, a two-factor factorial greenhouse experiment was conducted with a completely randomized design with three replications. The first factor had twelve levels including acetic acid to citric acid ratios of 100:0, 80:20, 60:40 and 50:50 at concentrations of 2, 5, 10% of the said ratios as foliar application. The second factor involved the use of surfactants CDEA, LAE, SLS, KECO and control (no-surfactant) together with acetic acid-citric acid mixture. The results showed that at higher acetic acid to citric acid ratios, dry weight and leaf area of wild oat and wild mustard significantly decreased while their mortality rates increased considerably. When used in combination with acetic acid-citric acid mixture, surfactant tend to enhance herbicidal properties more than two times, particularly at concentrations of 5 and 10%.  According to the results, acetic acid to citric acid ratios of 100:0 and 80:20 at concentrations of 5 and 10% when used with CDEA or LAE provided the highest efficacy for non-selective weed control. 

کلیدواژه‌ها [English]

  • Weed
  • Management
  • Organic agriculture
  • Surfactant
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