The Effect of Colored Shade Nets on Nutrition and Growth of Dieffenbachia amoena "Starlight"
محورهای موضوعی : مجله گیاهان زینتیAli Mahboub Khomami 1 , Mohammad Naghi Padasht 2 , Marzieh Alidoost 3 , Tahereh Radfar 4 , Reza Alipoor 5
1 - Soil and Water Research Department, Guilan Agricultural and Natural Resources Research and Education Center, AREEO, Rasht, Iran
2 - Department of Horticulture Crops Research, Guilan Agricultural and Natural Resources Research and Education Center, AREEO, Rasht, Iran
3 - Department of Horticulture Crops Research, Guilan Agricultural and Natural Resources Research and Education Center, AREEO, Rasht, Iran
4 - Ornamental Plant Research Station, Guilan Agricultural and Natural Resources Research and Education Center, AREEO, Rasht, Iran
5 - Ornamental Plant Research Station, Guilan Agricultural and Natural Resources Research and Education Center, AREEO, Rasht, Iran
کلید واژه: nutrients, Growth index, Growth factor, Foliage plants, Greenhouse conditions,
چکیده مقاله :
In order to control the sunlight in the open air and greenhouses in Iran, shade nets are essential. Using shade nets can reduce the air temperature in the covered area. The selection of shade nets with the right color has been shown to have an important role in the growth of ornamental plants under similar conditions. In order to accomplish this objective, an experiment was conducted to examine the impact of shade netting in the shades of blue, white, and green (at a shade level of 50%) on the growth of Dieffenbachia amoena ornamental foliage plants. The basic design of the experiment consisted of randomized complete blocks. During the five-month economic growing period under greenhouse conditions, plant height, diameter, and chlorophyll index were measured every two weeks. At the end of growth, the leaf fresh and dry weight, stem fresh and dry weight, plant growth index, and leaf nutrients were measured. The results indicated that Dieffenbachia grown under blue shade nets had higher height, growth index, root dry weight, and iron than those grown under white and green shade nets. Since most Iranian greenhouses produce this ornamental plant under green shade nets, and consi-dering that these two colored shade nets have similar prices, it is recommended that Dieffenbachia be produced under blue shade nets.
برای کنترل نور خورشید در هوای آزاد و گلخانه ها در ایران، شبکه های سایه بان ضروری است. استفاده از توری های سایه بان می تواند دمای هوا را در منطقه تحت پوشش کاهش دهد. نشان داده شده است که انتخاب تورهای سایه با رنگ مناسب نقش مهمی در رشد گیاهان زینتی در شرایط مشابه دارد. به منظور دستیابی به این هدف، آزمایشی برای بررسی تأثیر توری سایه‌دار در سایه‌های آبی، سفید و سبز (در سطح سایه 50 درصد) بر رشد گیاهان شاخ و برگ زینتی Dieffenbachia amoena انجام شد. طرح پایه آزمایش شامل بلوک های کامل تصادفی بود. در طول دوره رشد اقتصادی پنج ماهه در شرایط گلخانه، ارتفاع بوته، قطر و شاخص کلروفیل هر دو هفته یکبار اندازه‌گیری شد. در پایان رشد، وزن تر و خشک برگ، وزن تر و خشک ساقه، شاخص رشد گیاه و عناصر غذایی برگ اندازه گیری شد. نتایج نشان داد که دیفن‌باخیا که در زیر شبکه‌های سایه آبی رشد می‌کند دارای ارتفاع، شاخص رشد، وزن خشک ریشه و آهن بالاتری نسبت به آنهایی است که در زیر شبکه‌های سایه‌دار سفید و سبز رشد می‌کنند. از آنجایی که اکثر گلخانه های ایرانی این گیاه زینتی را زیر توری های سایه سبز تولید می کنند و با توجه به اینکه این دو توری رنگی دارای قیمت های مشابهی هستند، توصیه می شود دیفن باخیا تحت شبکه های سایه آبی تولید شود.
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