بررسی کارایی چند علف‌کش بر علف¬های هرز مزارع کنجد (Sesamum indica) جیرفت و کهنوج

نوع مقاله: مقاله پژوهشی

نویسندگان

1 مرکز تحقیقات جیرفت

2 موسسه تحقیقات گیاهپزشکی

چکیده

به منظور کنترل علف های هرز مزارع کنجد در منطقه جیرفت، آزمایشی به مدت دو سال در قالب طرح بلوک‌های کامل تصادفی در 3 تکرار و 10 تیمار اجرا گردید. تیمارهای آزمایش، شامل کاربرد علف‌کش‌های تریفلورالین 48 درصد EC به میزان 5/2 لیتر در هکتار به همراه 2 لیتر هالوکسی فوپ اتوکسی اتیل 5/12 درصد EC ، آلاکلر 48 درصد EC به میزان 5 لیتر، اکسی فلورفن 24 درصد EC به میزان 2 لیتر در هکتار، پندیمتالین 33 درصد EC به میزان 4 لیتر در هکتار، تکرار تیمارهای اول تا چهارم با یک بار وجین دستی، دو بار وجین دستی و شاهد وجین دستی در طول فصل رشد بود.  نتایج نشان داد که علف‌کش‌های تریفلورالین و آلاکلر وزن خشک علف پنجه‌ای مصری (L. Dactyloctenium aegyptica) را به ترتیب 63 و 56 درصد کاهش دادند. آلاکلر و پندیمتالین باعث کاهش وزن خشک تاج خروس بدلL.) (Digera muricata به ترتیب به میزان94 و 91 درصد شدند، و عملکرد کنجد را به ترتیب 75 و 65 درصد افزایش دادند. 

کلیدواژه‌ها


عنوان مقاله [English]

Evaluation of Various Herbicide Efficiency in Weed Control of Sesame (Sesamum indica) in Jiroft and Kohnuj

نویسندگان [English]

  • Ebrahim mamnooie 1
  • Parviz shimi 2
  • mohammad Baghestani 2
چکیده [English]

In order to investigate weed control in sesame farms, a two-year experiment with Randomized Complete Blocks Design, 10 treatments and 3 replications was carried out in Jiroft and Kahnuj during 2006-2008. Treatments included trifluralin 48% EC at 2.5 L/ha (pre plant incorporated) + haloxyfop ethoxy ethyl 12.5% EC at 2 L/ha. post emergence of grassy weeds, alachlor 48% EC at 5 lit/ha pre-emergence, oxyfluorfen 24% EC at 2 lit/ha post-emergence, pendimethalin 33% EC at 4 lit/ha pre-emergence, above treatments + one hand weeding, two hand weedings and weed free check. Results indicated that all treatments reduced weed density and dry weight. Trifluralin and alachlor reduced Dactyloctenium aegyptica dry weight by 63 and 56% respectively. Alachlor and pendimethalin reduced Digera muricata dry weight by 94 and 91% respectively. The latter treatments also increased sesame yield by 75 and 65% respectively.

کلیدواژه‌ها [English]

  • Sesame
  • trifloralin
  • Alachlor
  • pendimethalin
  • Oxyfluorfen
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