Effect of Azolla Compost and Various Biofertilizers on Growth and Quality of Zinnia flower (Zinnia Elegans Thumbelina)
محورهای موضوعی : مجله گیاهان زینتیKolsoum Forghan 1 , Ali Mahboub Khomami 2
1 - Department of Horticulture, Rasht Branch, Islamic Azad University, Rasht, Iran
2 - Faculty Member of Soil and Water Research Department, Guilan Agricultural and Natural Resources Research and Education Center, AREEO, Rasht, Iran
کلید واژه: growth factors, <i>Azolla</i> compost, <i>Azospirillum</i>, <i>Azotobacter</i>,
چکیده مقاله :
Zinnia is an annual plant with the long flowering period from late spring to mid-autumn. It is a popular plant for landscape. In the present study, the effect of two types of growth promoting bacteria and Azolla compost on some ornamental characteristics of Zinnia were evaluated in pot cultivation and greenhouse conditions. The factorial experiment was conducted in three replications based on a completely randomized design with two factors, including Azolla compost in 6 levels (0, 10, 20, 30, 40, 50 percent) and growth promoting bacteria in 3 levels (without bacteria, Azospirillum and Azotobacter bacteria). The results showed that growth promoting bacteria (Azospirillum and Azotobacter) and Azolla compost had a significant effect on the investigated factors. Treatment of 50% Azolla compost and Azospirillum compared to other treatments had higher leaf and root fresh weight, leaf nitrogen and plant height. Moreover, 10% Azolla compost and Azospirillum was the best treatment in terms of leaf and root dry matter content. According to conducted evaluation, Azospirillum with less percentage of compost had a significant effect on dry weight and Azospirillum with a higher percentage of compost had a significant effect on fresh weight. Besides, a higher percentage of compost in Azospirillum in treatment Azospirillum and 50% compost had a significant effect on leaf nitrogen and height of the stem.
آهار گیاهی یکساله و دارای دوره طولانی گلدهی بوده و از اواخر بهار تا اواسط پاییز گل می دهد و جز گیاهانی می باشد که در فضای سبز کاربرد زیادی دارد. در این تحقیق اثر دو نوع باکتری محرک رشد و کمپوست آزولا بر برخی صفات زینتی و فاکتورهای رشد گیاه آهار (Zinna elegans) در کشت گلدانی و در شرایط گلخانه ای مورد ارزیابی قرار گرفت. این آزمایش بصورت فاکتوریل بر پایه طرح کاملاً تصادفی با دو فاکتور شامل کمپوست آزولا در 6 سطح (0، 10، 20، 30، 40 و 50 درصد) کمپوست آزولا و فاکتور باکتری های محرک رشد در سه سطح (بدون باکتری ، باکتری آزوسپریلوم و ازتوباکتر) در سه تکرار انجام شد. نتایج تحقیق نشان داده که بطور کلی باکتری های محرک رشد (آزوسپریلیوم و ازتوباکتر) و کمپوست آزولا اثر معنی داری بر فاکتورهای مورد بررسی در گیاه داشته اند. تیمار 50 درصد کمپوست آزولا و آزوسپریلیوم وزن تر ریشه و برگ، نیتروژن برگ و ارتفاع بوته بیشتری نسبت به سایر تیمارها داشت و در تیمار 10 درصد کمپوست آزولا و آزوسپریلیوم از نظر ماده خشک برگ و ماده خشک ریشه برترین تیمار بود. طبق بررسی های انجام شده آزوسپریلیوم با درصد کمتری از کمپوست برروی وزن خشک و با درصد بیشتری از کمپوست بر روی وزن تر اثرمعنی دار داشت، ضمنا با در صد بیشتری از کمپوست در تیمار آزسپریلیوم و 50 درصد کمپوست بر نیتروژن برگ و ارتفاع ساقه اثر معنی دار داشت.
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