1 23 Nutrient Cycling in Agroecosystems (formerly Fertilizer Research) ISSN 1385-1314 Nutr Cycl Agroecosyst DOI 10.1007/s10705-014-9663-4 Use of the nitrification inhibitor dicyandiamide (DCD) does not mitigate N 2 O emission from bovine urine patches under Oxisol in Northwest Brazil A. M. Mazzetto, A. S. Barneze, B. J. Feigl, J. W. Van Groenigen, O. Oenema, C. A. M. De Klein & C. C. Cerri