تأثیر کاربرد کود زیستی حاوی باکتری ‏Pantoea agglomerans‏ در مقایسه با کود اوره بر رشد و ‏کیفیت چمن

نوع مقاله : مقاله پژوهشی

نویسندگان

1 دانش‌آموخته کارشناسی ارشد، دانشکده کشاورزی، دانشگاه زنجان، زنجان، ایران

2 استادیار، دانشکده کشاورزی، دانشگاه زنجان، زنجان، ایران

3 استاد، دانشکده کشاورزی، دانشگاه زنجان، زنجان، ایران

چکیده

کاربرد کودهای زیستی سازگار با محیط زیست و جایگزینی آن با کودهای شیمیایی می­تواند به­عنوان یکی از گزینه­های مدیریت تغذیه‌ای چمن مطرح باشد. در این پژوهش تأثیر کاربرد کود زیستی محتوی باکتری Pantoea agglomerans بر رشد و کیفیت چمن و مقایسه آن با کود اوره مورد بررسی قرار گرفت. این آزمایش روی چمن اسپیدی گرین در گلدان و در گلخانه با چهار تیمار کشت چمن به روش متعارف (Gr)، کاربرد کود اوره معادل 100 کیلوگرم در هکتار (GrU)، کاربرد باکتری تثبیت‌کننده نیتروژن Pantoea agglomerans (GrPA)، کاربرد باکتری Pantoea agglomerans و باکتری­های تنظیم کننده رشد (GrPP) و در سه تکرار انجام شد. طبق نتایج، بیشترین وزن ‌تر در تیمار GrU مشاهده شد. تیمارهای GrPA و GrPP نیز بعد از تیمار اوره تأثیر مثبت بر وزن‌ تر گیاه داشتند. کارایی کود زیستی بر مبنای وزن خشک، در تیمار GrPA و GrPP به ترتیب برابر با 9/32 و 6/11 درصد بود. به­ کار بردن کود زیستی محتوی Pantoea agglomerans به تنهایی یا همراه با باکتری­های محرک رشد سبب افزایش معنی­دار کیفیت ظاهری چمن نسبت به تیمار شاهد شد، اما از تیمار کود اوره کمتر بود. کودهای زیستی همچنین در مقایسه با تیمار شاهد سبب افزایش غلظت نیتروژن، پتاسیم، منگنز و روی در برگ­های چمن شدند. به طور کلی بر اساس نتایج این پژوهش کاربرد باکتری Pantoea agglomerans به عنوان یک تثبیت‌کننده نیتروژن تأثیر مثبتی بر رشد و کیفیت چمن دارد و می­توان از آن به عنوان جایگزین بخشی از کود اوره استفاده نمود.

کلیدواژه‌ها


عنوان مقاله [English]

The effect of application of bio-fertilizer containing Pantoea agglomerans compared ‎to urea fertilizer on growth and quality of turfgrass

نویسندگان [English]

  • Nadia Emami 1
  • Akbar Hassani 2
  • Ali Reza Vaezi 3
  • Mohammad BabaAkbari sari 2
1 M. Sc. Graduate, Faculty of Agriculture, University of Zanjan, Zanjan, Iran
2 Assistant Professor, Faculty of Agriculture, University of Zanjan, Zanjan, Iran
3 Professor, Faculty of Agriculture, University of Zanjan, Zanjan, Iran
چکیده [English]

The use of environmentally friendly biofertilizers and their replacement with chemical fertilizers can be one of the options for grass nutrition management. In this study the effect of Pantoea agglomerans bacteria on growth and quality of grass and its comparison with urea fertilizer was investigated. This experiment was carried out in greenhouse in pots with four treatments of turfrass cultivation in a conventional way as control (Gr), application of urea equivalent to 100 kg/ha (GrU), application of nitrogen fixing bacteria of Pantoea agglomerans (GrPA), and application of nitrogen fixing bacteria of Pantoea agglomerans + PGPR (GrPP) with three replications. The results showed that the highest fresh weight was observed in GrU treatment. GrPA and GrPP treatments also had a positive effect on fresh weight after urea treatment. Biofertilizer efficiency for dry weight in GrPA and GrPP treatments was 32.9 % and 11.6 %, respectively. Application of biofertilizer containing Pantoea agglomerans alone or in combination with growth promoting bacteria increased the appearance of grass compared to the control treatment, but was less than urea treatment.  Biofertilizers also increased the concentrations of nitrogen, potassium, manganese and zinc in the leaves compared with the control treatment. In general, the results of this study showed that the use of Pantoea agglomerans as a nitrogen fixing bacteria has a positive effect on the growth and quality of grass and it can be used as a partial substitute for urea fertilizer.

کلیدواژه‌ها [English]

  • Nitrogen fixing bacteria
  • Plant Growth Promoting Rhizobacteria
  • PGPR
  • sport grass‎
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