Effect of Nutrient Solution and Azolla and Rice Straw Mixed Compost on Nutrition and Growth of Dieffenbachia amoena in Potting Medium
محورهای موضوعی : مجله گیاهان زینتی
Ali Mahboub Kkhomami
1
(Soil and Water Research Department, Guilan Agricultural and Natural Resources Research and Education Center, AREEO, Rasht, Iran)
Mohammad Naghi Padasht Dahkaei
2
(Horticulture Crops Research Department, Gilan Agricultural and Natural Resources Research and Education Center, AREEO, Rasht, Iran)
Reza Alipoor
3
(Horticulture Crops Research Department, Gilan Agricultural and Natural Resources Research and Education Center, AREEO, Rasht, Iran)
Seyyed Ibrahim Hojati
4
(Horticulture Crops Research Department, Gilan Agricultural and Natural Resources Research and Education Center, AREEO, Rasht, Iran)
کلید واژه: Peat, Perlite, growth factors, Vermiculite,
چکیده مقاله :
This experiment was performed to investigate the effect of Azolla and rice straw mixed compost in peat substitution on Dieffenbachia amoena. Factorial experiment based on a completely randomized design with two factors of nutrient solution in 2 levels (1- without solution, 2- with 130 mg N L-1, 32 mg P L-1 and 117 mg K L-1) and 5 levels of Azolla and rice straw mixed compost (0, 15, 30, 45 and 60 %) was done in 3 replications, with 3 plants per treatment in greenhouse conditions. Azolla and rice straw mixed compost was replaced with peat in the control. Compost was prepared from a volumetric mixture of 50 % Azolla and 50 % rice straw. Azolla and rice straw mixed compost replaced peat in the control treatment. The control bed contained 10 % perlite: 30 % vermiculite: 60 % peat (volume percentage). Growth factors including height, diameter, number of leaves, chlorophyll index, fresh leaf weight, fresh stem weight, leaf dry weight, stem dry weight, leaf area, physical and chemical characteristics of growth medium and nutrients were measured. The results showed that the use of 45 % Azolla and rice straw mixed compost in replacement with peat (with formula 10 % perlite: 30 % vermiculite: 45 % Azolla and rice straw mixed compost: 15 % peat), in addition to improves the growth factors of Dieffenbachia amoena plant, reduces the consumption of peat by up to 75 %.
این آزمایش برای بررسی تأثیر کمپوست مخلوط آزولا و کاه برنج در جایگزینی پیت بر روی دیفن باخیا آموئه­نا انجام شد. آزمایش فاکتوریل بر اساس یک طرح کاملاً تصادفی با دو عامل محلول غذایی در 2 سطح (1- بدون محلول، 2- با 130 میلی گرم در لیتر N، 32 میلی گرم در لیترP و 117 میلی­گرم در کیلوگرم در لیترK ) و 5 سطح آزولا و کمپوست مخلوط کاه برنج (صفر ، 15 ، 30 ، 45 و 60 درصد) در 3 تکرار ، با 3 بوته در هر تیمار در شرایط گلخانه­ای انجام شد. کمپوست از مخلوط حجمی 50 درصد آزولا و 50 درصد کاه برنج تهیه شد. کمپوست مخلوط آزولا و کاه برنج در تیمار شاهد جایگزین پیت شد. بستر شاهد شامل 10 درصد پرلیت: 30 درصد ورمیکولیت: 60 درصد پیت (درصد حجم) بود. فاکتورهای رشد شامل قد، قطر، تعداد برگ، شاخص کلروفیل، وزن برگ تازه، وزن ساقه تازه، وزن خشک برگ، وزن خشک ساقه، سطح برگ، مشخصات فیزیکی و شیمیایی محیط رشد و مواد مغذی اندازه­گیری شد. نتایج نشان داد که استفاده از کمپوست مخلوط 45 درصد آزولا و کاه برنج در جایگزینی با پیت (با فرمول 10 درصد پرلیت: 30 درصد ورمیکولیت: 45 درصد آزولا و کمپوست مخلوط کاه برنج: 15 درصد پیت) علاوه بر بهبود فاکتورهای رشد گیاه Dieffenbachia amoena ، مصرف پیت را تا 75 درصد کاهش می دهد.
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