Miranda, R.P., Pietroski, M., Matos, F.B., Seben Junior, G.F. and Caione, G. 2018. Nitrogen, potassium, calcium and sulfur omission in grass Convert. Comunicata Scientiae. 8, 3 (Apr. 2018), 452–458. DOI:https://doi.org/10.14295/cs.v8i3.2257.