Ortiz, O. G. B., Caballero, S. U., & Alvarez, A. L. (2014). Influence of application time of 32-P labelled triple superphosphate on the fertilizer use efficiency and productivity of potato. Pesquisa Agropecuaria Brasileira, 23(9), 963–970. https://doi.org/10.1590/S1678-3921.pab1988.v23.14020