Qualitative characteristics of sugar beet as affected by different broadleaf herbicides combinations

Document Type : Full Article

Authors

1 Departmentof Crop Production and Plant Breeding, College of Agriculture, Shiraz University, Shiraz, I. R.Iran

2 Department of Agronomy and Plant Breeding, Faculty of Agriculture, University of Kurdistan, Sanandaj, I.R. Iran.

Abstract

ABSTRACT-Several herbicides are registered for selective weed control in sugar beet; however, no single chemical herbicide can control all weeds in beet fields. Frequently, two or more herbicides may have to be combined sequentially or as tank mixed to achieve adequate broad-spectrum weed control. In order to evaluate the effects of some combinations of broadleaf herbicides on sugar beet yield and quality, a field experiment was conducted in randomized complete block design with three replications at Miandoaab Agricultural Research Station during 2009-2010 growing season. The results showed that weed competition decreased root yield up to 84%. The maximum root yield (73.66 tha-1) was obtained from 4.5 kgha-1metamitron application at 2-to 4-leaf stage and the minimum root yield was obtained in the control (20.66tha-1). The herbicide treatments had a significant effect on white sugar content so that the highest white sugar yield was achieved from bettanal Progress Am herbicide (10.9 tha-1) and the lowest white sugar yield was found in control treatment (1.49 tha-1). The lowest sodium, potassium, amino-nitrogen as well as molasses content were obtained from phenmedipham + desmedipham + ethofumesate and the highest value for the above parameters was observed in control treatment. Generally, weed competition led to decreasing root yield and sugar content and treatment bettanal Progress Am herbicide was recommended to control broadleaf weeds.

Keywords

Main Subjects


Article Title [Persian]

بررسی خصوصیات کیفی چغندرقند تحت تأثیر ترکیب‏ های مختلف پهن‏ برگ‏ کش‏ ها

Authors [Persian]

  • محمد مجیدی 1
  • غلامرضا حیدری 2
  • یحیی امام 1
1 گروه زراعت و اصلاح نباتات، دانشکده کشاورزی، دانشگاه شیراز، شیراز، ج. ا. ایران
2 گروه زراعت و اصلاح نباتات، دانشکده کشاورزی، دانشگاه کردستان، سنندج. ج. ا. ایران
Abstract [Persian]

چکیده-علفکش‏‏ های زیادی وجود دارند که برای کنترل علف‏ های هرز در چغندر قند به ثبت رسیده‏اند، ولی یک علف‏ کش به طور خاص وجود ندارد که بتواند تمام علف‏ های هرز را به طور کامل کنترل کند. اغلب ترکیب دو یا چند علف‏ کش در مخزن سمپاش به صورت متناوب می‏تواند برای رسیدن به کنترل بهتر علف‏های هرز پهن‏ برگ مورد استفاده قرار گیرد. به منظور بررسی اثرات ترکیب علف‏ کش‏ های پهن‏ برگ‏ کش روی عملکرد و خصوصیات کیفی چغندرقند آزمایشی در قالب طرح بلوک‏ های کامل تصادفی با سه تکرار در ایستگاه تحقیقاتی میاندوآب در آذربایجان غربی در سال 89-88 انجام شد. نتایج نشان داد که علف ‏های هرزعملکرد چغندرقند را تا 84 درصد کاهش دادند. بیشترین میزان عملکرد ریشه (66/73 تن در هکتار) ازکاربرد تیمار متامیترون به میزان 5/4 کیلوگرم در هکتار در مرحله 2 تا 4 برگی و کمترین میزان (66/20 تن در هکتار) از تیمار شاهد بدست آمد. بر اساس جدول تجزیه واریانس تیمارهای علف‏ کشی روی درصد قند تأثیر معنی‏ داری داشتند. بالاترین درصد قند خالص از تیمار بتانالپراگرسآام (9/10 تن در هکتار) و کمترین درصد مربوط به تیمار شاهد(49/1 تن در هکتار) بود. کمترین میزان مواد مضره شامل سدیم ،پتاسیم و آمینو اسید و همچنین ملاس از ترکیب علف‏ کش‏ های فن مدیفام، دسمدیفام و اتوفومسیت و بیشترین مقدار از تیمار شاهد بدست آمد. به طورکلی رقابت علف‏ های هرز باعث کاهش عملکرد ریشه و درصد قند شد وتیمار بتانالپراگرسآام بهترین تیمار علف‏ کشی برای کنترل علف‏ های هرز پهن‏ برگ مزرعه چغندر قند بود.

Keywords [Persian]

  • واژه‏ های کلیدی:
  • بتانالپراگرسآام
  • علف‏ کش
  • ملاس
  • درصد قند
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