Abstract
In a pot experiment it was established that NH4 volatilization losses were larger with urea than with ammonium sulphate used as a basal fertilizer for lowland rice. The difference arose from the pH-increasing effect of urea in the floodwater. This rise in pH promoted the growth of algae which in turn were responsible for large diurnal fluctuations in the pH of the floodwater thus enhancing the loss of NH3 during daytime. Ammonium sulphate lowered the pH of the water which suppressed the growth of algae.
Once the rice canopy had closed, the algal population declined and the diurnal pH fluctuations largely disappeared. Urea as a topdressing was found to be less liable to give rise to NH3 volatilization than when added as basal dressing. The highest N recovery was obtained with ammonium sulphate used as basal dressing and urea as topdressing. Working a basal dressing into the soil improves the fertilizer-N recovery of urea-N, but not of ammonium sulphate-N, the latter being already high without soil incorporation.
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References
Bekele T, Cino BJ, Ehlert PAJ, van der Maas AA and van Diest A (1983) An evaluation of plant-borne factors promoting the solubilization of alkaline rock phosphates. Plant and Soil 75, 361–378
Bouldin DR and Alimagno BV (1976) NH3 volatilization losses from IRRI paddies following broadcast applications of fertilizer nitrogen. IRRI, Los Banjos, Philippines
Broadbent FE (1978) Nitrogen transformation in flooded soil. In Soils and Rice, Int. Rice Research Inst., Los Banjos, Philippines, 543–559
De Datta SK (1975) Increasing fertilizer efficiency in rice. Int. Rice Research Conference Plenary Session on Relevant Research for Increasing Rice Production, Int Rice Res Instit, Manilla, Philippines
Engelstad OP (1967) Nitrogen sources for rice in flooded soils. Tennessee Valley Authority, Muscle Shoals, Alabama
FAO/IAEA Division of Atomic Energy in Food and Agriculture Using Nitrogen 15-Labelled Fertilizers (1978) Isotope studies on rice fertilization. Tech. Rep. Series 181, Int. Atomic Energy Agency, Vienna
Fillery IRP, Simpson JR and De Datta SK (1984) Influence of field environment and fertilizer management on ammonia loss from flooded rice. Soil Sci Soc Am J 48, 914–920
Freney JR, Denmead OT, Watanabe T and Craswell ET (1981) Ammonia and nitrous oxide losses following applications of ammonium sulphate to flooded rice. Aust J Agric Res 32, 37–45
Int. Atomic Energy Agency (1970) Rice Fertilization. A six-year isotope study on nitrogen and phosphorus fertilizer utilization. Int Atomic Energy Agency Tech Rep Series 108, 1–184, Vienna
Ismunadji M, Blair GJ, Momuat E and Sudjadi M (1983) Sulfur in the agriculture of Indonesia In Blair GJ and Till AR (eds) Sulfur in S.E. Asian and S. Pacific Agriculture, 165–179
Kruijs ACBM van der, Jacobs JCPM, van der Vorm PDJ and van Diest A (1981) Recovery of fertilizer-nitrogen by rice in a greenhouse under varying soil- and climatic conditions. Proc Symp on Paddy Soil, Inst of Soil Sci, Academia Sinica, Beijing, 678–688
MacRae IC and Ancajas R (1970) Volatilization of ammonia from submerged soil. Plant Soil 33, 99–103
Maguiat IJ and Yoshida T (1973) Nitrogen transformation of ammonium sulphate and alanine in submerged Maahas clay. Soil Sci Plant Nutr (Tokyo) 19, 95–102
Mikkelsen DS, De Datta SK and Obcemea WN (1978) Ammonia volatilization losses from flooded rice soils. Soil Sci Soc Am J 42, 725–730
Mitsui S (1955) Inorganic Nutrition, Fertilization and Soil Amelioration for Lowland Rice, 2nd edition, Yokendo Press, Tokyo
Tusneem ME and Patrick JR, WH (1971) Nitrogen transformation in waterlogged soil. Louisiana State Univ Bull 657
Vlek PLG and Craswell ET (1981) Ammonia volatilization from flooded rice. Fert Res 2, 247–259
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De Ferrante, B., Van Der Vorm, P. & Van Diest, A. Comparative studies on the usefulness of ammonium sulphate and urea as fertilizers for lowland rice. Fertilizer Research 10, 119–133 (1986). https://doi.org/10.1007/BF01074367
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DOI: https://doi.org/10.1007/BF01074367