Abstract
Laboratory incubation experiments were conducted to study the influence of increasing concentrations of N-(n-butyl)phosphorothioic triamide (NBPT) on NH3 volatilization and rate of urea hydrolysis and evolution of mineral N in Ozzano, Rimini and Carpi soils with different physicochemical characteristics. Low concentrations of NBPT reduced NH3 losses due to volatilization after urea fertilization and the effectiveness of the inhibitor was related to the soil characteristics (e.g. high concentrations of organic C and sand). After 15 days of incubation, no significant reductions of losses were found for any of the NBPT concentrations employed in Rimini soil. The application of NBPT led to a considerable reduction of the formation of nitrite. This process was completely annulled with the highest dose of NBPT (0.5% w/wurea) in the Carpi soil after 15 days. In Rimini soil, however, the use of NBPT was less effective in influencing nitrite formation. The use of NBPT favoured accumulation of nitrate proportional to the NBPT concentration employed while it had no influence on the NH sup+inf4 fixation by 2:1 layer silicates. The data obtained support previous evidence that NBPT is effective in reducing the problems encountered in using urea as fertilizer. However, environmental conditions and soil physicochemical characteristics may have an important influence on the effectiveness of NBPT.
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References
Bremner JM (1965) Inorganic forms of nitrogen. In: Black CA, et al (eds) Methods of soil analysis, part 2. American Society of Agronomy-SSSA, Madison, pp 1179–1237
Bremner JM, Chai HS (1989) Effects of phosphoroamides on ammonia volatilization and nitrite accumulation in soils treated with urea. Biol Fertil Soils 8:227–230
Carmona G, Christianson CB, Byrnes BD (1990) Temperature and low concentration effects on the urease inhibitor N(n-butyl)thiophosphoric triamide (nBtPt) on ammonia volatilization from urea. Soil Biol Biochem 22:933–937
Christianson CB, Byrnes BH, Carmona G (1990) A comparison of the sulfur and oxygen analogs of phosphoric triamide urease inhibitors in reducing urea hydrolysis and ammonia volatilization. Fert Res 26:21–27
Christianson CB, Baethgen WE, Carmona G, Howard RG (1993) Microsite reactions of urea-nBTPT fertilizer on the soil surface. Soil Biol Biochem 25:1107–1117
Fenn LL, Hossner HS (1985) Ammonia volatilization from ammonium or ammonium forming nitrogen fertilizers. Adv Soil Sci 1:123–169
Hauk RD (1984) Technical approaches to improving the efficiency of nitrogen fertilizer use by crop plants. In: Hauck RD (ed) Nitrogen in crop production. American Society of Agronomy-SSSA, Madison, pp 551–560
Hendrickson LL, Omholt TE, O'Connor MJ (1987) Effect of phenylphosphorodiamidate on immobilization and ammonia volatilization. Soil Sci Soc Am J 51:1067–1071
Keeney DR, Nelson DW (1982) Nitrogen inorganic forms. In: Page AL, et al (eds) Methods of soil analysis, part 2. American Society of Agronomy — SSSA, Madison, pp 643–698
Mengel DB, Nelson DW, Huber DM (1982) Placement of nitrogen fertilizers for no-till and conventional corn. Agron J 74:515–518
Ministero delle Risorse Agricole, Alimentari e Forestali (1994) Metodi ufficiali di analisi chimica del suolo con commenti e interpretazioni, pp 1–152
Mulvany RL, Bremner JM (1979) A modified diacetyl monoxime method for colorimetric determination of urea in soil extracts. Commun Soil Sci Plant Anal 10:1163–1170
Mulvaney RL, Bremner JM (1981) Control of urea transformations in soils. In: Paul EA, Ladd JN (eds) Soil biochemistry, vol 5. Marcel Decker, New York, pp 153–196
Nelson KE, Turgeon AJ, Street JR (1980) Thatch influence on mobility and transformation of nitrogen carriers applied to turf. Agron J 72:487–492
Schmidt EL (1982) Nitrification in soil. In: Stevenson FJ (ed) Nitrogen in agricultural soils. American Society of Agronomy-SSSA, Madison, pp 253–288
Silva JA, Bremner JM (1966) Determination and isotope-ratio analysis of different forms of nitrogen in soil, 5. Fixed ammonium. Soil Sci Soc Am J 30:587–594
Tabatabai MA (1982) Soil enzymes. In: Page AL (eds) Methods of soil analysis, part 2, 2nd edn. Agronomy 9. American Society of Agronomy-SSSA, Madison, pp 903–947
Terman GL (1979) Volatilization losses of nitrogen as ammonia from surface-applied fertilizers, organic amendments, and crop residues. Adv Agron 31:189–223
Zhengping W, Van Cleemput O, Boert L (1991) Effect of urease inhibitors on urea hydrolysis and ammonia volatilization. Biol Fertil Soils 11:43–47
Whitting LD (1965) X-ray diffraction technique for mineral identification and mineralogical composition. In: Black CA, et al. (eds) Methods of soil analysis, part 1. Agronomy 9, American Society of Agronomy-SSSA, Madison, pp 671–698
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Antisari, L.V., Marzadori, C., Gioacchini, P. et al. Effects of the urease inhibitor N-(n-butyl)phosphorothioic triamide in low concentrations on ammonia volatilization and evolution of mineral nitrogen. Biol Fert Soils 22, 196–201 (1996). https://doi.org/10.1007/BF00382512
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DOI: https://doi.org/10.1007/BF00382512