Bonza-Espinoza, M., Pinzón-Sandoval, E. and Álvarez-Herrera, J. (2016) “Effect of potassium nitrate and sucrose on the yield of onion (Allium cepa L.) plants”, Sour topics, 21(2), pp. 40–50. doi:10.21897/rta.v21i2.900.