تأثیر مواد افزودنی بر رفع اثرات کاهنده ناشی از سختی آب سمپاشی بر کارایی گلایفوسیت (رانداپ 41% SL) و تأثیرآن بر برخی پارامترهای رشد خار شتر (Alhagi psedoalhagi)

نوع مقاله: مقاله پژوهشی

نویسندگان

1 عضو هیئت علمی مرکز تحقیقات مشهد

2 مرکز تحقیقات مشهد

چکیده

این تحقیق به‏منظور بررسی امکان رفع اثرات کاهنده آب سخت و افزایش کارایی گلایفوسیت در کنترل علف‏هرز خارشتر با افزودن ماده تجاری X-change و مقایسه آن با سولفات آمونیوم در سال‏های 90-1388 طی دو آزمایش جداگانه هر یک در قالب طرح کاملاً تصادفی با سه تکرار با آرایش فاکتوریل در ایستگاه تحقیقاتی عباس آباد (مشهد)‌ به اجرا درآمد. در یک آزمایش چهار د‍ز 0، 4، 6 و8 لیتر در هکتار گلایفوسیت در 3 سطح سختی آب حامل علف‏کش: کم، متوسط و زیاد به‏ترتیب 5/47، 95 و 190 میلی‏گرم در لیتر Mg+2 + Ca+2 و با غلظت‏های 0، 25/0 و 5/0 درصد حجمی از افزودنی X-change در زمین آلوده به خارشتر مورد مطالعه قرار گرفتند. در آزمایش دوم سولفات آمونیوم با 3 غلظت 0، و3 و4 کیلوگرم در صد لیتر آب جایگزین X-change گردید و سایر تیمار‏ها مانند آزمایش اول بود. نتایج نشان داد که کارایی علف‏کش گلایفوسیت در کاهش ارتفاع نهایی خارشتر در پایان فصل رشد با افزایش سطح سختی آب در صورت عدم مصرف هر یک از دو افزودنی به‏شدت کاهش می‏یابد به‏طوری که مقدار ED50 لازم برای کاهش رشد عمودی خارشتر از 478/2 به 407/31 لیتر در هکتار افزایش یافت. افزایش غلظت X-change به 5/0 درصد بالاترین تأثیر در افزایش کارایی گلایفوسیت را در پی داشت به‏طوری که شاخص  ED50برای ارتفاع خارشتر از 407/31 در بالاترین سختی آب و عدم مصرف افزودنی به 579/6 لیتر در هکتار کاهش یافت. بر اساس نتایج این تحقیق افزودنی X-change نسبت به سولفات آمونیوم در سطوح پایین و متوسط سختی آب تفاوت معنی‏داری از نظر کارایی با یکدیگر نداشتند.

کلیدواژه‌ها


عنوان مقاله [English]

Effects of Additive to Ease Hard Water Impacts as a Carrier on Glyphosate (Roundup SL 41%) Efficiency and its Effect on Some Growth Parameters of Camelthorn (Alhagi psedoalhagi)

نویسندگان [English]

  • mohammad bazubandi 1
  • majed Abbaspour 1
  • Hossein Torabi 2
  • Peyman Keshavarz 2
چکیده [English]

This study was conducted to investigate enhancement effects of additives on efficacy of glyphosate at different levels of water hardness on camelthorn control at Abasabad Research Station (Mashhad) during 2009-2010. Two separate experiments were carried out. In the first experiment, Four doses of glyphosate (Rundup SL %41) i.e. 0, 4, 6 and 8 L.ha-1 were separately tank mixed with 0.1, 0.25, 0.5 percent of X-change at three levels of water hardness including 47.5, 95 and 190 mgL-1 of Mg+2 + Ca+2. In the second experiment, ammonium sulfate at three levels i.e. 0, 3 and 4 percent replaced X-change while other treatments remained intact. Treatments were applied during early May to camelthorn plants. Each treatment was replicated three times. Results revealed that without applying additives to herbicide solution, glyphosate efficacy to reduce plant height was significantly declined at higher levels of water hardiness as ED50 was increased from 2.478 to 31.407 L.ha-1. Maximum glyphosate efficiency was observed when X-change was used with concentration of 5%. It could reduce ED50 to 6.579 L.ha-1 compared to 31.407 L.ha-1 where no additive was applied at highest level of hardness. Under low and medium ED50, there was no significant difference between xchange and ammonium sulfate.

کلیدواژه‌ها [English]

  • Additive
  • Salinity
  • Weeds
  • Herbicide Efficiency
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