University of Tehran Iranian Journal of Horticultural Science 2008-482X 47 1 2016 05 21 Quality of pink evening primrose (Oenothera speciosa Rosea) improved by application of vermicompost and rice hull in green roof medium Quality of pink evening primrose (Oenothera speciosa Rosea) improved by application of vermicompost and rice hull in green roof medium 157 166 58222 10.22059/ijhs.2016.58222 FA Tahereh Bahrami .Sc. Student, Department of Horticulture, Faculty of Agriculture, Shahrekord University, Shahrekord, Iran Vahid Rouhi Assistant Professor, Department of Horticulture, Faculty of Agriculture, Shahrekord University, Shahrekord, Iran Abdolrahman Mohammadkhani Associate Professor, Department of Horticulture, Faculty of Agriculture, Shahrekord University, Shahrekord, Iran Saeed Reezi Assistant Professor, Department of Horticulture, Faculty of Agriculture, Shahrekord University, Shahrekord, Iran Journal Article 2015 08 22 Green roofs are a part of efforts to make the cities more sustainable and it is one of the modern solutions for urban problems. The physical development of cities led to loss of the natural environment. Therefore, the development of green spaces plays an important role in human life. In order to evaluate the effect of some culture media on yield of “<em>Oenothera speciosa</em> Rosea” in green roof situation, a factorial experiment conducted based on a complete random design with vermicompost (0, 5, and 10% v/v) and rice hull (0, 7, and 14% v/v) factors in three replications. The results showed that vermicompost treatment has a positive significant effect on the number of flowers, daily flowering average, flower diameter, stem diameter, root volume, fresh and dry weight of shoots and roots and soil humidity. Also, in most measured traits, it showed a positive effect compared to control plants. In this research, vermicompost (10% v/v) mixed with rice hull (14% v/v) improved quality and quantity traits of pink evening primrose. Then, overall results showed that this mixture can recommend as a medium for evening primrose in the green roof. Green roofs are a part of efforts to make the cities more sustainable and it is one of the modern solutions for urban problems. The physical development of cities led to loss of the natural environment. Therefore, the development of green spaces plays an important role in human life. In order to evaluate the effect of some culture media on yield of “<em>Oenothera speciosa</em> Rosea” in green roof situation, a factorial experiment conducted based on a complete random design with vermicompost (0, 5, and 10% v/v) and rice hull (0, 7, and 14% v/v) factors in three replications. The results showed that vermicompost treatment has a positive significant effect on the number of flowers, daily flowering average, flower diameter, stem diameter, root volume, fresh and dry weight of shoots and roots and soil humidity. Also, in most measured traits, it showed a positive effect compared to control plants. In this research, vermicompost (10% v/v) mixed with rice hull (14% v/v) improved quality and quantity traits of pink evening primrose. Then, overall results showed that this mixture can recommend as a medium for evening primrose in the green roof. https://ijhs.ut.ac.ir/article_58222_2d8932aa347ca7dc3e2c35f0340765a8.pdf