J. Bio. Env. Sci.5(2), 141-147, August 2014
The purpose of this study was to determine effect of factors on attitude toward hydroponics cultivation. The research population consisted of 176 experts in Agricultural Ministry, which were selected using census method. The methodological approach of this study was descriptive-correlative. Validity of the instrument was established by a panel of experts consisting of senior faculty members and research committee advisors. Reliability analysis was conducted by using Cronbach alpha formula and result was 0.83. The results showed that 7.1, 13.5 and 79.4 percent of experts expressed that their attitude toward hydroponics cultivation were weak, moderate and good respectively. Also the results of the multiple regression analysis (stepwise method) revealed that Policy making factors and economical factors explained a variation of 36.6 percent of attitude toward hydroponics cultivation.
Allaire S, Caron J, Duchesne I, Parent LE, Rioux JA. 2004. Growing media varying in particles size and shape for greenhouse tomato. Acta Hort. 644, 307-311.
Calpas J. 2001. Management of the greenhouse environment. Government of Alberta, Agriculture and rural development.
Cantliffe DJ, Funes J, Jovicich E, Parajpe A, Rodriguez J, Shaw N. 2007. Media and Containers for Greenhouse soil less grown cucumbers, Melons peppers and Strawberries. Acta Hort. 614, 199-203.
Franklin K, King J, Burton A, Brown S. 2010. Hydroponics around the world. Practical hydroponics and greenhouses, 45, 18-25.
Jaenaksorn T, Ikeda H. 2004. Possibility of substituting soil less fertilizer with soil fertilizer for growing leafy vegetable in Hydroponics. Acta Hort. 644, 351-357.
Janatan A. 2010. Commercial greenhouse vegetable production. University of California, Oakland.
Khoshgoftar A, Aghajani R, Hoseini F. 2008. Methods cultivation of soil less. Isfahan, Jahad of University, Isfahan unit. (in Farsi)
Latimer J, Scoggins H, Barden V, Lambur M. 2002. Needs Assessment Survey of the Virginia Greenhouse Industry .Virginia: Polytechnic Institute and State University. 24061-0402.
Mattson N. 2008. Needs Assessment Survey of the New York State Greenhouse Industry. New York: Department of Horticulture Plant Science Building. Cornell University Ithaca, NY 14853.
Miceli A, Mancada A, Vetrano F, Danna F. 2003. First results on yield and quality response of Basil grown in a floating system. Acta Hort. 699, 377-381.
Papadopoulos I, Chatzitheodoridis F, Papadopoulos C. 2008. Evaluation of Hydroponic Production of Vegetables and Ornamental Pot-Plants in a Heated Greenhouse in Western Macedonia, Greece. American Journal of Agricultural and Biological Sciences 3, 559-565.
Paraskevopoulou G, Grafiadellis M. 1995. Precocity, Plant productivity and fruit quality of strawberry plant grown in soil and soil less culture. Mendeley. 408, 109.117.
Porterfield DM, Banks MK. 2009. Outdoor hydroponics growing of strawberries. Available on the: http://www.gardening-tips-idea.com/Outdoor-Hydroponics.html
Sanchez P, Oller S, Malato J, Maldonado W. 2002. The environmental relevance of capital goods in life cycle assessments of products and services. Plant and soil 86, 207-216.
Shariatmadar A. 2012. Agriculture-Jahad Ministry. Tehran, Interview. Date (5.2.2012). (in Farsi)
Takeda F. 2000. Out of-season greenhouse strawberry production in soil less substrate. Adv. in strawberry. Science 18, 4-15.
Verdonck O, Demeyer P. 2004. The influence of the particle size on the physical properties of growing media. Acta Hort. 644, 99-101.