اثر اسید هیومیک بر برخی ویژگی‌های زراعی در ارقام مختلف یونجه (Medicago sativa L)

نوع مقاله: علمی پژوهشی

نویسندگان

1 دانشیار گروه زراعت، دانشکده کشاورزی، دانشگاه شهرکرد، شهرکرد، ایران

2 دانشجوی دکتری علف های هرز، دانشکده کشاورزی، دانشگاه شهرکرد، شهرکرد، ایران

چکیده

تاثیر سطوح مختلف اسید هیومیک بر ویژگی‌های زراعی ارقام مختلف یونجه با اجرای آزمایشی مزرعه‌ای در دو چین بصورت فاکتوریل اسپلیت پلات در قالب طرح بلوک‌های کامل تصادفی در سه تکرار بررسی شد. در این آزمایش پنج رقم یونجه (یزدی، همدانی، بغدادی، بمی و رنجر) و سه سطح اسید هیومیک (شاهد، پنج و ١٠ لیتر در هکتار) به‌عنوان فاکتور اصلی و چین به عنوان فاکتور فرعی در نظر گرفته شدند. نتایج نشان داد که به جز صفت ارتفاع بوته بقیه صفات شامل عملکرد علوفه خشک، وزن خشک تک بوته، وزن خشک ریشه و شاخساره تک بوته، تعداد برگ و قطر ساقه تحت تاثیر اثر متقابل سه‌جانبه چین × رقم × اسید قرار گرفتند. صفت ارتفاع بوته تحت تاثیر اثر متقابل دوجانبه رقم × اسید و چین × رقم واقع شد. در مجموع هر دو چین ارقام یونجه یزدی و بمی حایز بیشترین و رقم رنجر حایز کمترین مقدار صفات اندازه‌گیری شده شدند. همچنین در بین تیمارهای اسید هیومیک، تیمار 10 لیتر در هکتار نسبت به تیمار شاهد و پنج لیتر در هکتار اسید بیشترین مقدار صفات را در ارقام یونجه داشت. در مجموع ارقام یونجه بمی، رنجر و یزدی با کاربرد 10 لیتر در هکتار اسید هیومیک به ترتیب بیشترین عملکرد علوفه خشک را در شرایط آزمایش داشتند.

کلیدواژه‌ها


عنوان مقاله [English]

Effect of Humic Acid on some Agronomic Characters of some Varieties of Alfalfa (Medicago sativa L.)

نویسندگان [English]

  • Ali Tadayyon 1
  • Mojtaba Zafarian 2
1 Associate Professor, Faculty of Agriculture, Shahrkord University, Shahrkord, Iran
2 Ph.D. Student of Weed Science, Faculty of Agriculture, Shahrkord University, Shahrkord, Iran
چکیده [English]

To evaluate the effect of humic acid on some cultural characters of some alfalfa varieties, a field experiment was conducted as factorial split plot based on RCBD design with three replications in 2014. In this experiment, 5 varieties of alfalfa (Yazdi, Hamedani, Baghdadi, Bami and Ranger) and three levels of humic acid (5 and 10 lha-1 and without humic acid, as control) were considered as the first factor and harvest time was as the second factor. Result indicated that except plant height, other characteristics such as dry weight yield, dry weight per plant, root and shoot dry weight per plant, number of leaves and stem diameter were affected by triple interaction effect of harvest time×variety×humic acid. Plant height was affected by double interaction effect of variety×humic acid and also harvest time×variety. Yazdi and Bami had the highest and Ranger had the least values of traits under study in two cuttings, respectively. Also in the between of humic acid treatments, 10 lha-1 treatment produced highest traits measured as compared to control and 5 lha-1 treatment. Bami, Ranger and Yazdi varieties with 10 lha-1of humic acid in two cuttings produced the highest dry weight yield (3.64, 3.55 and 3.26 t.ha-1 respectively) in this experiment.

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