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Granulation Characteristics of Mono-granular NPK(10-0-30) Fertilizer Incorporated with Rock-Phosphate Powder and its Effects on Tobacco Plant  

Lee, Yun-Hwan (Suwon Experiment Station, Korea Ginseng & Tobacco Research Institute)
Jeong, Hun-Chae (Suwon Experiment Station, Korea Ginseng & Tobacco Research Institute)
Kim, Yong-Yeon (Suwon Experiment Station, Korea Ginseng & Tobacco Research Institute)
Publication Information
Korean Journal of Soil Science and Fertilizer / v.35, no.5, 2002 , pp. 290-295 More about this Journal
Abstract
Fertilizer granulation test was carried out by a small pan granulator. A premixture composed of SOP 60%, urea 22% and RP powder 18% was rolled in the pan granulator while 10% phosphoric acid solution(binder) was sprayed on the rolling powder bed. Granules were developed very fast along with a little amount of binder. Hardness, brittle ratio in water and hygroscopicity of granules were improved enough to evaluate physical properties of the fertilizer. Growth responses of tobacco plant to the fertilizer were investigated at seedling and flowering stage by pot experiment under plastic film roof. Seedlings showed poor growth at nursery pot cell. In virgin soil with deficient available phosphate tobacco plant showed poor growth until budding and flowering stage but good growth in tillage soil with high cumulative phosphate.
Keywords
Fertilizer; Granulation; Rock phosphate; Binder;
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  • Reference
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