بررسی زمان کاربرد و میزان علف کش ایزوکسافلوتل (SC 480 ) به منظور کنترل علف‌های‌هرز پهن‌برگ در نخود بهاره دیم

نوع مقاله: مقاله پژوهشی

نویسندگان

1 سازمان تحقیقات کشاورزی، بخش تحقیقات گیاه پزشکی

2 عضو هیات علمی

3 کارشناس

چکیده

به منظور بررسی کارایی علف‌کش‌ایزوکسافلوتل (SC480) بر کنترل علف‌های‌هرز مزارع نخود بهاره (Cicer arietinum) آزمایشی در استان‌های کرمانشاه، کردستان و لرستان در قالب طرح بلوک‌های کامل تصادفی در 4 تکرار اجرا شد. تیمارها شامل کاربرد پیش‌رویشی و پس‌رویشی علف‌کش ‌ایزوکسافلوتل با مقادیر 2/0، 3/0 و 4/0 لیتر در هکتار، پایریدیت (EC60%) به میزان 2 لیتر در هکتار و شاهد وجین دستی علف‌های‌هرز بودند. درصد کاهش تراکم، وزن خشک علف‌های‌هرز و درصدگیاه‌سوزی نخود 30 روز پس از سم‌پاشی پس‌رویشی تعیین شد. بر طبق نتایج درکرمانشاه برترین تیمارها از نظر عملکرد دانه نخود متعلق به ایزوکسافلوتل پیش‌رویشی به میزان 2/0 و 3/0 لیتر در هکتار با 669 و 5/632 کیلوگرم درهکتار به ترتیب با 79 و 5/80 درصد کاهش تراکم علف‌های‌هرز بود. در کردستان ایزوکسافلوتل پیش‌رویشی به میزان 2/0 لیتر در هکتار با 80 درصد کاهش تراکم علف‌های‌هرز و 1118 کیلوگرم در هکتار عملکرد دانه مناسب‌ترین تیمار در نظر گرفته شد. در لرستان‌ ایزوکسافلوتل پیش‌رویشی به میزان‌های 2/0 و 3/0 لیتر در هکتار ‌به ترتیب 5/89 و 5/91 درصد تراکم علف‌های‌هرز را کاهش داده و بیشترین عملکرد دانه نیز متعلق به این دو تیمار به ترتیب با 742 و 5/812 کیلوگرم در هکتار بود. با توجه به نتایج علف‌کش‌ ایزوکسافلوتل با کاربرد پیش‌رویشی به میزان 2/0 لیتر در هکتار از ماده تجاری برای کنترل علف‌های‌هرز نخود بهاره مناسب است.

کلیدواژه‌ها


عنوان مقاله [English]

Investigation of application timing and herbicide rate of Isoxaflutole (SC 480) for broadleaved weeds control in spring chickpea in dryland condition

نویسندگان [English]

  • Mozhgan Veisi 1
  • Mehdi Minbashi Moeini 2
  • Mohammad Saleh Mansouri 3
  • Mohsen Ghiasvand 3
1 Agricultural Research Center of Kermanshsh. Plant Protection Section
چکیده [English]

In order to evaluate the efficacy of Isoxaflutole (SC480) on weed control in Chickpea (Cicer arietinum L.) fields, experiments were carried out in Kermanshah, Kurdestan and Lorestan provinces in a randomized complete block design with four replications. Treatments consisted of applications of pre-emergence isoxaflutole (SC480) at 0.2, 0.3 and 0.4 L.ha-1 of commercial formulation, post-emegence isoxaflutole at 0.2, 0.3 and 0.4 L.ha-1 of commercial formulation, post-emergence pyridate (EC60%) at 2 L.ha-1 of commercial formulation and hand weeding. Weed percent damage based on EWRC scores at 30 days after post spraying, weed density reduction (%), weed biomass reduction (%) were measured. According to the results, the best treatments in Kermanshah for grain yield of chickpea were pre-emergence isoxaflutole at rates 0.2 and 0.3 L.ha-1 with 669 and 632.5 kg ha-1 that reduced weed density %79 and %80.5 respectively. In Kurdestan, pre-emergence isoxaflutole at rate 0.2 L.ha-1 was considered as the most suitable treatment with 80% reduction in weed density and 1118 kg ha-1 grain yield. In Lorestan, pre-emergence isoxaflutole at rate 0.2 and 0.3 L.ha-1 reduced weed population at 89.5% and 91.5% respectively. The highest grain yield in Lorestan belonged to pre-emergence isoxaflutole at rates 0.2 and 0.3 L.ha-1 at 742 and 812.5 kg.ha-1.According to the results in the three locations, application of pre- emergence isoxaflutole at rate 0.2 L.ha-1 of commercial formulationis suitable for weed control in spring chickpea.

کلیدواژه‌ها [English]

  • adensity
  • Dry weight
  • Grain yield
  • Merlin Flexx
  • pre- emergence

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