Abstract
Isobutylidene diurea (IBDU) is well-known as a hydrolytic, slow-release nitrogen fertilizer. The powder of IBDU was granulated by agitation granulator with urea-formaldehyde condensation as a binder, in order to improve the physical characteristic and the fertilizer use efficiency. We termed the granulated product “SUPER-IB”. Three experiments were carried out to evaluate the characteristic of SUPER-IB as a slow-release fertilizer. The breaking hardness (kg/granule) of SUPER-IB was over 1.8, and the hygroscopicity was very low. The mineralization rate of SUPER-IB was increased by higher temperatures. In the paddy rice test, almost equal yields was obtained by only basal fertilization of SUPER-IB in comparison with conventional application of compound fertilizer. It is concluded that SUPER-IB has a ideal physical characteristic and a superior fertilizer use efficiency compared to conventional treatments.
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References
Hamamoto M 1966 Proc. Fertilizer Soc. 90, 1–77.
Lunt O R and Clark S B 1969 Agric. Food Chem. 17, 1269–1271.
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© 1997 Kluwer Academic Publishers
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Saitoh, H., Watanuki, T. (1997). Properties of a new slow-release nitrogen fertilizer “SUPER-IB”. In: Ando, T., Fujita, K., Mae, T., Matsumoto, H., Mori, S., Sekiya, J. (eds) Plant Nutrition for Sustainable Food Production and Environment. Developments in Plant and Soil Sciences, vol 78. Springer, Dordrecht. https://doi.org/10.1007/978-94-009-0047-9_203
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DOI: https://doi.org/10.1007/978-94-009-0047-9_203
Publisher Name: Springer, Dordrecht
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