اثر کاربرد توام باکتری‌های محرک رشد و سطوح ورمی‌کمپوست بر عملکرد کمّی و کیفی کلزای پاییزه (.Brassica napus L)

نوع مقاله: علمی پژوهشی

نویسندگان

1 عضو هیات علمی دانشگاه آزاد واحد شهرری

2 دانشیار گروه زراعت، واحد یادگار امام خمینی (ره) شهرری، دانشگاه آزاد اسلامی، تهران، ایران

3 باشگاه پژوهشگران جوان و نخبگان، واحد اسلامشهر، دانشگاه آزاد اسلامی، اسلامشهر، ایران

چکیده

مدیریت تلفیقی تغذیه گیاه، راهکاری مناسب برای افزایش بهره‌وری گیاهان زراعی و بهبود محیط زیست به ­شمار می­رود. به­ منظور ‏بررسی اثر کاربرد باکتری‌های محرک رشد همراه با سطوح مختلف ورمی‌کمپوست بر عملکرد کمّی و کیفی کلزا، آزمایشی ‏در سال‎ ‎زراعی 94-1393 به صورت مزرعه‌ای به اجرا درآمد. تیمارهای آزمایش شامل تلقیح و عدم تلقیح ‏‏(شاهد) بذرهای ‏کلزا با باکتری‌های محرک رشد و کاربرد سطوح مختلف ورمی‌کمپوست به مقدار صفر (شاهد)، 4، 8 و 12 ‏تن در هکتار بودند. ‏نتایج نشان داد که اثرات ساده و برهم‌کنش کاربرد ورمی‌کمپوست و باکتری‌های محرک رشد ‏بر صفات کمّی و ‏کیفی کلزا معنی‌دار بودند. به­ طوری­ که با افزایش مقدار کاربرد ورمی‌کمپوست از ۴ تا ۱۲ تن در هکتار، افزایش ‏معنی‌داری در صفات ‏مورد بررسی نسبت به شاهد مشاهده شد. هم­چنین، تلقیح بذرها با باکتری‌های محرک رشد نیز ‏باعث افزایش مقدار صفات ‏اندازه‌گیری شده نسبت به شاهد گردید. کاربرد 12 تن ورمی‌کمپوست در هکتار به همراه ‏باکتری‌های محرک رشد‏، باعث ‏افزایش تعداد خورجین در بوته، وزن هزار دانه، عملکرد بیولوژیک، عملکرد دانه، شاخص ‏برداشت و عملکرد روغن به­‏ترتیب به میزان 28.63 عدد، 4.68 گرم، 2.10785 کیلوگرم، 3484.2 کیلوگرم، 38.02% و 1795.93 ‏کیلوگرم در هکتار نسبت به شاهد ‏شد. کاربرد 12 تن ورمی‌کمپوست در هکتار به همراه باکتری‌های محرک رشد ‏ در سه ‏صفت عملکرد دانه، شاخص برداشت ‏و عملکرد روغن منجر به افزایش به ­ترتیب 83، 45 و 43 درصد نسبت به شاهد گردید. بنابراین، در خاک‌هایی با کمبود ‏مواد آلی، کاربرد هم‌زمان ‏ورمی‌کمپوست و باکتری‌های محرک رشد ‏‏می‌تواند سبب افزایش معنی‌داری در عملکرد کمی و کیفی ‏کلزا شود.‏

کلیدواژه‌ها


عنوان مقاله [English]

The Effect of Combined Application of Plant Growth Promoting Rhizobacteria and Different Levels of Vermicompost on Quantitative and Qualitative Performance of Rapeseed (Brassica napus L.)

نویسندگان [English]

  • reza monem 1
  • Alireza Pazoki 2
  • Ali Abdzad Gohari 3
1 Assistant Professor of Agronomy Department, Yadegar-e-Imam Khomeini (RAH) Shahre-rey Branch, Islamic Azad University, Tehran, Iran
2 Associate Professor of Agronomy Department, Yadegar-e-Imam Khomeini (RAH) Shahre-rey Branch, Islamic Azad University, Tehran, Iran
3 Young Researchers and Elite Club, Islamshahr Branch, Islamic Azad University, Islamshahr, Iran
چکیده [English]

Integrated plant nutrition management is a good method to increase the ‎productivity of crops and improve the environment. To evaluate the ‎effects of using ‎growth promoting bacteria and different levels of vermicompost on quantitative ‎and qualitative yield of rapeseed (Brassica napus L.), a field experiment was ‎conducted in 2014-2015. The treatments consisted of inoculation and non-‎inoculation of canola seeds with growth promoting bacteria and application of ‎different levels of vermicompost (0, 4, 8 and 12 t.ha-1). The results showed that ‎simple effects and interaction of vermicompost and growth ‎promoting bacteria ‎on quantitative and qualitative traits of canola were significant. That is to say ‎with ‎increasing the application of vermicompost from 4 to 12 tons per hectare, a ‎‎significant increase was observed in the traits under study as compared to the control.‎ ‎Inoculation of seeds with growth promoting bacteria also increased the ‎‎amount of measured traits as compared to the control. The application of 12 tons of ‎‎vermicompost per hectare, along with growth promoting bacteria, resulted in an ‎increase in ‎the number of pods per plant, 1000-seed weight, biological yield, ‎grain yield, harvest ‎index and oil yield, (28.63, 4.68 g, 10785.2 kg‎, 3484.2 kg, ‎‎38.02% and 1795.93 kg.ha-1, respectively, as compared with control). Application of ‎‎12 t.ha-1 of vermicompost per hectare along with growth promoting ‎bacteria resulted in grain ‎yield, harvest index and oil yield increase by 83%, 45% and 43%, ‎respectively, ‎as compared with control. Therefore, in soils ‎with low organic matter content, ‎simultaneous application of vermicompost and growth ‎promoters bacteria can ‎improve the quality and quantity of rapeseed yield ‏.‏‎

کلیدواژه‌ها [English]

  • oil percentage
  • PGPR
  • plant growth regulators
  • Yield components

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