Garzón, J. E., Pardo, O. and Cárdenas, E. A. (2020) “The effects of bovine urine application on two soil nitrogen compounds and growth of three forage grasses in the Colombian Piedmont plains”, Tropical Grasslands-Forrajes Tropicales, 8(2), pp. 105–114. doi: 10.17138/tgft(8)105-114.