Farahat, S., Taha, G., Elnggar, E., AL Molakab, M. (2016). New Preparation, Characterization and Application for Coated Urea using Aswan Red Clay. Journal of Soil Sciences and Agricultural Engineering, 7(12), 907-911. doi: 10.21608/jssae.2016.40541
S. Farahat; G. Taha; E. Elnggar; M. AL Molakab. "New Preparation, Characterization and Application for Coated Urea using Aswan Red Clay". Journal of Soil Sciences and Agricultural Engineering, 7, 12, 2016, 907-911. doi: 10.21608/jssae.2016.40541
Farahat, S., Taha, G., Elnggar, E., AL Molakab, M. (2016). 'New Preparation, Characterization and Application for Coated Urea using Aswan Red Clay', Journal of Soil Sciences and Agricultural Engineering, 7(12), pp. 907-911. doi: 10.21608/jssae.2016.40541
Farahat, S., Taha, G., Elnggar, E., AL Molakab, M. New Preparation, Characterization and Application for Coated Urea using Aswan Red Clay. Journal of Soil Sciences and Agricultural Engineering, 2016; 7(12): 907-911. doi: 10.21608/jssae.2016.40541
New Preparation, Characterization and Application for Coated Urea using Aswan Red Clay
1Egyptian Fertilizer Development Center, El-Mansoura, Egypt.
2Chemistry Department, Faculty of Science, Aswan University, Aswan,.
3Egyptian Company for Chemical Industries, Kima, Aswan, Egypt.
Abstract
To enhance the effectiveness of urea fertilizers, a new coated slow-release fertilizer was developed using Aswan Red Clay (ARC) and a binder material called chitosan a biodegradable polymer was used to improve the property of urea. Characterizations of slow release of the urea granules were made using Scanning Electron Microscopy technique and energy dispersive X-ray analysis. Refractive Index method used for determine the rate of releasing. Ammonia volatilization was estimated by using the forced-draft technique. The static release experiment showed that the urea coated by Aswan Red Clay (ARCCU) gave a release of 9.78% at the first day and 95.36 at 24 day, in the same condition. The results of ammonia that volatized during 6 weeks showed that the total losses of ammonia gas for uncoated urea( UCU) and coated urea was 59.54% and 43.33%, respectively which main that the coating of urea is most costly in application.
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