A technique for predicting urea release from coated urea in wetland soil

Communications in Soil Science and Plant Analysis

Volumn 13, Issue 9, 1982, Pages 793-802

  Savant, N K ^a   Clemmons, J R ^a   James, A F ^a  

^a Fertilizer Technology Division International Fertilizer Development Center Muscle Shoals ^*  (United States)

Author keywords

Coated urea; slow release; urea release; wetland soil

Indexed keywords

EID: 0020461440     PISSN: 00103624     EISSN: 15322416     Source Type: Journal    
DOI: 10.1080/00103628209367310     Document Type: Article

References (17)

1. Bhowmik, T. 1980. Lac coated urea technology. Fertiliser News 25(5):17-19.
2. International Fertilizer Development Center (IFDC). 1980. 1979 Annual Report, Muscle Shoals, Alabama.
3. Korea Advanced Institute of Science and Technology (KAIST). 1980. Improving nitrogen fertilizer efficiency through controlled release with emphasis on urea. Final Report. Phase II, Seoul, Korea (unpublished).
4. Yeoh; C. S., and N. K. Soong. 1977. Natural rubber-based slow-release fertilisers. J. Rubber Research Institute of Malaysia 25(1):1-8.
5. Craswell, E. T., and P.L.G. Vlek. 1979. Greenhouse evaluation of nitrogen fertilizers for rice. Soil Sci. Soc. Am. J. 43:1184-1188.
6. International Fertilizer Development Center (IFDC). 1982. 1980 Annual Report, Muscle Shoals, Alabama.
7. International Rice Research Institute (IRRI). 1979. Annual Report for 1978, Los Banos, Philippines.
8. International Rice Research Institute (IRRI). 1980. Annual Report for 1979, Los Banos, Philippines.
9. Giordano, P. M., and J. J. Mortvedt. 1970. Release of nitrogen from sulfur-coated urea in flooded soil. Agron. J. 62:612-614.
10. Rajale, G. B., and R. Prasad. 1970. Mineralization of slow-release nitrogen fertilizers at varying moisture levels. Fertiliser News 15(5):38-39.
11. Shiga, H., W. B. Ventura, and T. Yoshida. 1977. Effect of deep placement of ball-type fertilizer at different growth stages on yield and yield components of the rice plant in the Philippines. Plant Soil 47:351-361.
12. Kurihara, K. 1978. IFDC unpublished data.
13. Savant, N. K., and S. K. De Datta. 1980. Movement and distribution of ammonium-N following deep placement of urea in a wetland rice soil. Soil Sci. Soc. Am. J. 44:559-565.
14. Onken, A. B., and H. D. Sunderman. 1977. Calorimetric determinations of exchangeable ammonium, urea, nitrate and nitrite in a single soil extract. Agron. J. 69:49-53.
15. Savant, N. K., A. F. James, and G. H. McClellan. 1981. Urea release from silicate- and polymer-coated urea in water and a simulated wetland soil. Agronomy Abstracts. p. 238.
16. Neem seed cake is prepared from oilseeds of neem tree (Azadirachta indica). The cake has a manurial value and is reported to have nitrification inhibition properties. For more information, see Ketkar, C. M., 1976. Utilization of neem (Azadirachta indica, juss) and its byproducts. Directorate of Non-Edible Oils and Soap Industry, Khadi and Village Industries Commission, 3, Irla Road, Vile Parle(W), Bombay, 400 056, India.
17. Savant, N. K., and S. K. De Datta. 1979. Nitrogen release patterns from deep placement sites of urea in a wetland rice soil. Soil Sci. Soc. Am. J. 43:131-134.