The Effect of Colored Shade Nets on Nutrition and Growth of Dieffenbachia amoena "Starlight"
الموضوعات : 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
الکلمات المفتاحية: nutrients, Growth index, Growth factor, Foliage plants, Greenhouse conditions,
ملخص المقالة :
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.
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