Effects of Azolla Compost Versus Peat and Cocopeat on the Growth and Nutrition of Chrysanthemum (Chrysanthemum morifolium) in Pot Culture
محورهای موضوعی : مجله گیاهان زینتیSadegh Khozuei 1 , Moazam Hassanpour Asil 2 , Ali Mahboub Khomami 3 , Seyedeh Khadijeh Abbasnia Zare 4 , Goshgar Moharram Mammadov 5
1 - Department of Horticulture, University of Guilan, Rasht, Guilan, Iran
2 - Department of Horticulture, University of Guilan, Rasht, Guilan, Iran
3 - Faculty Member of Soil and Water Research Department, Guilan Agricultural and Natural Resources Research and Education Center, AREEO, Rasht, Guilan, Iran
4 - Rasht Branch Islamic Azad University, Rasht, Guilan, Iran
5 - Soil Science and Agrochemistry Institute, Academy of Sciences of Azerbaijan, Baku, Azerbaijan
کلید واژه: compost, Peat, Perlite, Cocopeat, <i>Azolla</i>,
چکیده مقاله :
This experiment was performed to evaluate the application of Azolla compost in growth environments containing peat + perlite in comparison with cocopeat + perlite on the growth and nutrition of chrysanthemums in a completely randomized design with five levels of Azolla (0, 25, 50, 75 and 100% ) in three replication. It was found that the nutrients of Azolla compost substrates were richer than peat and cocopeat. The results showed that use of Azolla as compost increases the elements of phosphorus and potassium in the growing medium, but only the potassium increases in the leaves. The highest amount of leaf nitrogen and potassium was at 50% compost. Twenty five to seventy-five percent compost was not significantly different from peat or cocopeat in terms of final plant hieght, flowering branch length, number of leaves and petal carotenoids. With increasing compost, physical properties of the substrates were within the recommended range, and bulk density (0.31, 0.33, 0.30 and 0.30 g cm-3, respectively) increased compared to peat and cocopeat (0.18 and 0.16 g cm-3). One hundered percent compost had the highest chlorophyll a, chlorophyll b and total chlorophyll. Substitution of 25-100 % compost increased pH and EC of growth media. The results showed that the use of 25-75% compost could be a good alternative to peat, but was not significantly different from cocopeat. Due to the relatively high price and import of peat and cocopeat, and the negative impact of high amounts of compost on increasing growth medium EC, the use of 50% Azolla compost is economically preferred.
این آزمایش به منظور بررسی کاربرد کمپوست آزولا در محیط‌های رشد حاوی پیت + پرلیت در مقایسه با کوکوپیت + پرلیت بر رشد و تغذیه گل‌های داوودی در قالب طرح کاملاً تصادفی با پنج سطح آزولا (0، 25، 50، 75 و 100٪) در سه تکرار انجام شد. مشخص شد که مواد مغذی بسترهای کمپوست آزولا غنی تر از پیت و کوکوپیت است. نتایج نشان داد که استفاده از آزولا به عنوان کمپوست باعث افزایش عناصر فسفر و پتاسیم در بستر کشت می شود، اما فقط پتاسیم در برگ افزایش می یابد. بیشترین میزان نیتروژن و پتاسیم برگ در 50 درصد کمپوست بود. 25 تا 75 درصد کمپوست از نظر ارتفاع نهایی، طول شاخه گل دهنده، تعداد برگ و کاروتنوئیدهای گلبرگ تفاوت معنی داری با پیت یا کوکوپیت نداشت. با افزایش کمپوست، خواص فیزیکی بستر های کشت در محدوده توصیه شده قرار گرفت و چگالی ظاهری (به ترتیب 0/31، 0/33، 0/30 و 0/30 گرم در سانتی متر مکعب) در مقایسه با پیت و کوکوپیت (0/18 و 0/16 گرم در سانتی متر مکعب) افزایش یافت. کمپوست 100 درصد دارای بیشترین کلروفیل a، کلروفیل b و کلروفیل کل بود. جایگزینی 25 تا 100 درصد کمپوست باعث افزایش pH و EC بستر کشت شد. نتایج نشان داد که استفاده از 75-25 درصد کمپوست می تواند جایگزین مناسبی برای پیت باشد اما تفاوت معنی داری با کوکوپیت ندارد. با توجه به قیمت نسبتاً بالا و واردات پیت و کوکوپیت و تأثیر منفی مقادیر بالای کمپوست بر افزایش EC بستر کشت، استفاده از کمپوست 50 درصد آزولا از نظر اقتصادی ارجعیت دارد.
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