مصرف عناصر ریزمغذی در چغندرقند (Beta vulgaris L) رقم دوروتی

نوع مقاله: علمی پژوهشی

نویسندگان

1 گروه زراعت ، واحد ملکان، دانشگاه آزاد اسلامی، ملکان، ایران

2 استادیار گروه زراعت ، واحد ملکان، دانشگاه آزاد اسلامی، ملکان، ایران

چکیده

عناصر ریزمغذی نقش مهمی در تولید و عملکرد گیاهان دارند. این بررسی در مزرعه دانشگاه آزاد اسلامی ملکان با هدف مطالعه تأثیر برخی از عناصر ریزمغذی (آهن، روی و منگنز) با غلظت­ های مختلف در مراحل رشد (6-4 برگی و 10-8 برگی) چغندر­قند در 3 تکرار به صورت اسپلیت اسپلیت پلات بر پایه طرح بلوک­ های کامل تصادفی انجام شد. حداکثر عملکرد ریشه با کاربرد غلظت نه در هزار عناصر غذایی در مرحله 6-4 برگی حاصل گردید. محلول­ پاشی عناصر در هر سه غلظت در مرحله 10-8 برگی سبب افزایش معنی­ داری در عملکرد ریشه باعث شدند. کاربرد غلظت شش در هزار این عناصر ریزمغذی، عملکرد ریشه را تا 15.6 درصد افزایش داد. کاربرد عنصر منگنز تأثیر معنی­ داری بر عملکرد شکر سفید چغندر­قند نداشت. از سوی دیگر، کاربرد غلظت نه در هزار عنصر روی افزایشی 16.4 و کاربرد غلظت­ های شش و نه در هزار عنصر آهن افزایشی به­ ترتیب 18.6 و 36 درصدی در عملکرد شکر سفید را باعث گردیدند. درصد عیارقند تحت تأثیر کاربرد عنصر منگنز قرار نگرفت ولی کاربرد مقادیر بالای عناصر آهن و روی در مرحله 10-8 برگی چغندرقند افزایش معنی ­داری در عیارقند چغندر­قند باعث شد. در این مطالعه بیشترین افزایش در عیارقند تحت تأثیر کاربرد غلظت نه در هزار عنصر آهن به ­دست آمد. با توجه به اهمیت اقتصادی عملکرد شکر سفید و ریشه می ­توان محلول­ پاشی عناصر آهن و روی با غلظت نه در هزار در مرحله 10-8 برگی چغندرقند را جهت افزایش تولید مد نظر قرار داد.

کلیدواژه‌ها


عنوان مقاله [English]

Utilization of Micronutrients in Dorotti Sugar-beet (Beta vulgaris L.) Cultivar

نویسندگان [English]

  • Saeid Soleymani 1
  • Elnaz Farajzadeh Memari Tabrizi 2
1 Department of Agronomy, Malekan Branch, Islamic Azad University, Malekan, Iran
2 Department of Agronomy, Malekan Branch, Islamic Azad University, Malekan, Iran
چکیده [English]

Micronutrients have an important role in growth and yield of plants. This investigatin was carried out to evaluate effect of foliar applications of three micronutrients (Fe, Mn and Zn) at different times (4-6 and 8-10 leaf stage) with three replication on sugar beet. Based on results obtained all of the micronutrients used increased sugar beet sugar yield. Highest root yield was obtained by using 9 % of micronutrients at 4-6 leaf stage, but other concentrations did not have any effect on sugar beet yield. All of the three micronutrient concentrations increased root yield significantly. Application of 6% concentration increased root yield by 15.6 %. Mn application did not have any effect on sugar yield. 9 % concentration of Zn foliar application increased sugar yield by 16.4 %, and application of 6 and 9% of Fe increased sugar yield by 18.6 and 36 % respectively. Sugar percent did not changed by Mn application, but high concentrations of Fe and Zn at 8-10 leaf stage increased it. Highest increase in sugar percent obtained by using Fe 9 % foliar appliction. Because of economical importance of sugar and root yield, foliar application of 9 % of Fe and Zn at 8-10 leaf stage will be suitable.

کلیدواژه‌ها [English]

  • Foliar application
  • micronutrients
  • Sugar-beet
  • yield
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