تأثیر مقدار بذر و مدیریت علف‌های‌هرز بر رشد، عملکرد و اجزای عملکرد گیاه زراعی ماش (Vigna radiate L.)

نوع مقاله : مقالات پژوهشی

نویسندگان

1 گروه گیاهپزشکی، دانشکده کشاورزی، دانشگاه لرستان، ایران

2 گروه زراعت و اصلاح نباتات، دانشکده کشاورزی، دانشگاه لرستان، ایران

چکیده

تعیین مناسب‌ترین تراکم کاشت از اهمیت ویژه‌ای در بالابردن عملکرد محصول برخوردار است. میزان بذر در کشت ماش به‌عنوان یکی از عوامل مهم به‌زراعی، نقش مؤثری در چگونگی توزیع پوشش گیاهان هرز و همچنین رقابت درون‌گیاهی دارد. این پژوهش، به‌منظور بررسی اثر تراکم گیاه زراعی ماش بر توان رقابتی علف‌های‌هرز آن در سال 1393 به‌صورت فاکتوریل در قالب طرح بلوک‌های کامل تصادفی با هشت تیمار و سه تکرار در شهرستان خرم‌آباد به اجرا درآمد. در این آزمایش میزان بذر در چهار سطح (25، 50 ، 75و 100 کیلوگرم در هکتار) و تیمار علف‌های‌هرز در دو سطح (وجین و غیروجین) بود. بیشترین عملکرد دانه (2011کیلوگرم در هکتار) برای تیمار کنترل علف‌های‌هرز با مقدار 25کیلوگرم در هکتار و کمترین میانگین عملکرد دانه (7/672کیلوگرم در هکتار) برای تیمار تداخل علف‌های‌هرز با مقدار بذر 100کیلوگرم در هکتار به‌دست آمد، این موضوع گویای مقدار بذر 25کیلوگرم در هکتار برای حصول پتانسیل عملکرد دانه ماش و عدم ضرورت کاربرد مقادیر بذر بیشتر است. بر اساس نتایج آنالیز واریانس کنترل علف‌های‌هرز به‌طور معنی‌داری عملکرد دانه ماش را تحت تأثیر قرار داد. وجین علف‌های‌هرز سبب افزایش 68/82درصد عملکرد دانه ماش شد که این مسئله بیانگر اهمیت تداخل علف‌های‌هرز در کاهش عملکرد ماش و ضرورت کنترل علف‌های‌هرز برای دستیابی به عملکرد بالاست.

کلیدواژه‌ها

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