نوع مقاله : مقاله پژوهشی

نویسندگان

گروه علوم خاک، دانشکده کشاورزی، دانشگاه زنجان، زنجان، ایران.

چکیده

آبیاری مناسب و تغذیه مطلوب گیاه تأثیر چشم‎گیری بر عملکرد و کیفیت گیاه دارد. به‎منظور بررسی تأثیر دور آبیاری، سطوح گوگرد و بور بر عملکرد و کیفیت شلغم، آزمایشی به‎صورت اسپلیت اسپلیت پلات (کرت‎های دو بار خرد شده) در قالب طرح بلوک‎های کامل تصادفی با سه تکرار در مزرعه انجام شد. آبیاری به‎عنوان تیمار اصلی در سه سطح ( 3، 5 و 7 روز یکبار)، گوگرد (صفر، 400، 800 و kgha-1 1200 از منبع گوگرد پودری) و بور (صفر، 7/1، 4/3، kgha-1 1/5 بور از منبع اسید بوریک)  هر کدام در چهار سطح به‎عنوان تیمار فرعی در نظر گرفته شدند. نتایج نشان داد که بین بیش‎ترین و کم‎ترین وزن خشک غده شلغم که به‎ترتیب از تیمارهای S800B3.4I3 و S0B0I7 به‎دست آمد، اختلافی برابر با 3/82 درصد وجود داشت. بیش‎ترین و کم‎ترین غلظت گوگرد غده شلغم­ به‎ترتیب از تیمارهای S800B3.4I3 و S0B0I5 به‎میزان 67/0 و 19/0 درصد به‎دست آمد. در این مطالعه اثر سینرژیستی بین بور-پتاسیم و اثر آنتاگونیستی بین گوگرد-فسفر و بور-نیتروژن، گوگرد، کلسیم، منیزیم مشاهده شد. بیش‎ترین غلظت بور غده شلغم به‎میزان mgkg-1 4/39 از تیمار S0B3.4I3 و کم‎ترین مقدار غلظت بور به‎میزان mgkg-1 19/18 از تیمار S1200B0I7 به‎دست آمد. در کل می‎توان اظهار داشت که بیش‎ترین عملکرد غده شلغم و همین‎طور بهترین تعادل عناصر غذایی ماکرو و عنصر بور در تیمار S800B3.4I3 مشاهده شد.

کلیدواژه‌ها

عنوان مقاله [English]

The Effect of the Irrigation Period, Boron, and Sulfur on the Concentration of some Elements and Dry Weight of Turnip Tubers

نویسندگان [English]

  • Nader Khadem Moghadam Igdelou
  • Ahmad Golchin
  • Leila Osanloo

Department of Soil Science, Faculty of Agriculture, University of Zanjan, Zanjan, Iran.

چکیده [English]

Proper irrigation and optimal nutrition of plants have a significant effect on the yield and quality of the plant. To investigate the effect of irrigation period, sulfur and boron levels on turnip yield and quality, an experiment was conducted as the split split-plot (twice split plots) with randomized complete block design with three replications in the field. Irrigation as a main treatment in three levels (3, 5 and, 7 days), sulfur (0, 400, 800 and, 1200 kgha-1 from powdered sulfur source) and boron (0, 1.7, 3.4, and 5.1 kgha-1 from Boron acid source) were considered as a sub-treatments at four levels. The results showed that the highest and lowest dry weight of turnip tuber obtained from S800B3.4I3 and S0B0I7 treatments, respectively, had 82.3% differences. The highest and lowest concentrations of turnip tuber sulfur were obtained by 0.8% and 0.19% in S800B3.4I3 and S0B0I5 treatments, respectively. In this study, the synergistic effect between boron-potassium and the antagonistic effect was observed between sulfur-phosphorus and boron-nitrogen, sulfur, calcium, and magnesium. The highest boron concentration of turnip tuber was obtained 39.4 mgkg-1 in S0B3.4I3 treatment and the lowest boron concentration was 18.19 mgkg-1 in S1200B0I7 treatment. Overall, it can be stated that the highest turnip tuber yield and the best balance of macronutrients and boron were observed in S800B3.4I3 treatment.

کلیدواژه‌ها [English]

  • antagonistic
  • Brassica
  • macroelements
  • synergistic
  • tuber
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