Document Type : Original Article
1 M.Sc. graduated of agriculture, University of Urmia, Urmia, Iran
2 Assistant Professor of agriculture, University of Urmia, Urmia, Iran
3 Professor of agriculture, University of Urmia, Urmia, Iran
In order to investigate the possibility of using organic fertilizers in tobacco floating nursery, an experiment was conducted at tobacco research institute of Urmia in 2010. The experiment was done as factorial trail based on randomized complete block design (CRBD) with four replications. The levels of first factor were disinfected poultry manure, disinfected pigeon manure, a complete fertilizer (NPK) (15-5-30) and Marmarin fertilizer and the levels of second factor were involved two types of media (100 percent peat and 60 percent animal manure with 40 percent perlite media). During the experiment the concentration of nitrogen and ammonium levels were sampled and analyzed in nutrient solution after 10 days. The most of the nitrate and ammonium ( 48.82 and 63.8 ppm ) were obtained from chemical fertilizer in the peat media at the first sampling whereas the lowest nitrate and ammonium (4.02 and 5.57 ppm ) was belonged to chemical fertilizer at peat media and chemical fertilizer at perlite media with manure treatments, respectively, which was recorded at fourth stage of sampling
Anderson RG, Stephanie L (2000) Nutrient Analysis of Selected Commercial Organic Fertilizers for greenhouse Lettuce Production. Hurt Fact: 16-20.
Court MN, Stephen RC, Waid JS (1964) Toxicity as a cause of the inefficient of urea as a fertilizer: I. Review. J Soil Sci 15:35-42.
Elliot GC (1986) Urea hydrolysis in potting media. J American Soc Hort Sci 111: 863-866.
Fowlkes DJ (2001) Burley tobacco production in Tennessee: The float system for producing tobacco transplants. Agri Ext Ser, the University of Tennessee.
Hamilton JL, Lowe RH (1981) Organic matter and N effects on soil nitrate accumulation and resultant nitrate toxicity to tobacco transplants. Agro J 75:787-790.
Herlihy M (1972) Microbial and enzyme activity in peat. Acta Hort 26:45-50.
Lang HJ, Elliot GC (1991) Influence of ammonium nitrate ratio and nitrogen concentration on nitrification activity in soil less potting media. J American Soc Hort Sci 116: 642-645.
Pearce B, Palmer G (1997) Nitrogen source effects on the growth and development of burley transplant in the float system. Agro Notes 31: 6, Kentucky Agricultural Exp.
Pearce RC, Zhan Y, Coyne MS (1998) Nitrogen transformation in the tobacco floats system. Tobacco Sci 42:82-88.
Poisson C, Francois N, Cailleteau B, Onillon M (2008) Evaluation of tobaccos grown under organic cultural practices. Coresta Congress 2008, Shanghai, China, Agro-Pyto Groups, abstract.
Reed TD (1998) Float greenhouse tobacco: Transplant production guide. Publication 436-051.
Virginia Coop Ext, Virginia State University.
Smith WD, Fisher LR (2002) Evaluation or Organic Fertilizers for Seedling Production in the Float system. Coresta Congress 2002, New Orleans, Agro- Pyto Groups, abstr.
Smith WD (1997) Transplant production, in burley tobacco information 1997. North Carolina Coop Extension Ser. North Carolina State University.
Herlihy M (1972) Microbial and enzyme activity in peats. Acta Hort 26:45-50.
Smith WD, Spears F (2003) Transplant production with the float system, in burley tobacco information 2003. North Carolina Coop Ext Ser.