Abstract
The efficiency of the nitrification inhibitors dicyandiamide (DCD) and 1-amidino-2-thiourea (or guanylthiourea = GTU) in reducing losses from N fertilizers was investigated in two greenhouse experiments where leaching of nitrate-N was induced by percolation at 3 and 5 weeks after fertilization.
At an application rate of 10% by weight of fertilizer-N (e.g. 10 kg GTU/ha), GTU in combination with ammonium sulfate (AS) had effects similar to those of DCD (e.g. 15 kg DCD/ha) with regard to nitrate leaching, plant yields and nitrogen uptake. However, in combination with urea (U), GTU was more effective than DCD when applied at the same ratio except with a humic sandy clay soil (pH 7.3, 4.4% organic C), where GTU did not perform as effectively. Nitrate leaching was reduced by as much as 50% using U/GTU instead of U/DCD, and plant yield increased by 30%.
At temperatures between 17 and 25°C, the combination U/GTU could protect a high percentage of the nitrogen from being nitrified and leached over a 3 to 5 weeks period. The superiority of GTU over DCD was demonstrated especially in the treatments with 5 weeks of preincubation, despite the considerably lower application rate.
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Amberger A (1986) Potential of nitrification inhibitors in modern N-fertilizer management. Z Pflanzenern u Bodenkde 149: 469–484
Amberger A and Gutser R (1981) Umsatz und Wirkung von Harnstoff-Dicyandiamid sowie Ammonsulfat-Dicyandiamid-Produkten zu Weidelgras und Reis. Pflanzenern u Bodenkde 141: 553–566
Amberger A and Vilsmeier K (1979) Dicyandiamidabbau in Quarzsand und Böden. Z Pflanzenern u Bodenkde 142: 778–785
Bundy LG and Bremner JM (1973) Inhibition of Nitrification in Soils. Soil Sci Soc Amer Proc 37: 396–398
Cowie GA (1919) Decomposition of Cyanamide and Dicyanodiamide in the Soil. Agric Sci 9: 113–136
Germann-Bauer M (1984) pp 51–52 quoted in: Zacherl B (1985) Mikrobiologische Untersuchungen zur Wirkung von Nitrifikationshemmstoffen auf ausgewählte Bakterien des Stickstoffkreislaufs. Diss Techn Univ München
Germann-Bauer M (1987) Wirkung und Abbau des Nitrifikationshemmstoffes Guanylthioharnstoff. Diss Techn Univ München
Germann-Bauer M and Amberger A (1989) Degradation of the nitrification inhibitor 1-amidino-2-thiourea in soils, and its action in Nitrosomonas pure culture and soil incubation experiments. Fert Res 19: 13–19
Nakamigawa K, Takaoka R and Koyama K (1970) Patent US 3, 544, 295 (cl.A 01 n 7/00). Chem Abstr 74: 86956 d
Osiname O, van Gijn H and Vlek PLG (1983) Effect of nitrification inhibitors on the fate and efficiency of nitrogenous fertilizers under simulated humid tropical conditions. Trop Agric (Trinidad) 60: 211–217
Vilsmeier K (1980) Dicyandiamidabbau im Boden in Abhängigkeit von der Temperatur. Z Pflanzenern u Bodenkde 143: 113–118
Vilsmeier K (1981) Modellversuche zur nitrifikationshemmenden Wirkung von Dicyandiamid (‘Didin’). Bayer Landw Jb 58: 853–857
Vilsmeier K (1984) Bestimmung von Dicyandiamid, Nitrit und Nitrat in Bodenextrakten mit Hochdruckflüssigkeitschromatographie. Z Pflanzenern u Bodenkde 147: 264–268
Vilsmeier K, Bornemisza E and Amberger A (1987) Urea, ammonium sulfate and dicyandiamide transformations in Costa Rican soils. Fert Res 12: 255–261
Zacherl B (1985) Mikrobiologische Untersuchungen zur Wirkung von Nitrifikationshemmstoffen auf ausgewählte Bakterien des Stickstoffkreislaufs. Diss Techn Univ München
Zhong YL, Chen ZY, Li YG, Chiang MC and Sun CH (1980) Degradation of 1-amidino-2-thiourea in rice and soil (in Chinese). Huan Ching K'o Hsueh (J Environm Sci) 1: 17–24
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Amberger, A., Germann-Bauer, M.P. Effect of the nitrification inhibitors 1-amidino-2-thiourea and dicyandiamide in combination with urea and ammonium sulfate. Fertilizer Research 21, 179–183 (1990). https://doi.org/10.1007/BF01087429
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DOI: https://doi.org/10.1007/BF01087429