M. J. Alvim, D. F. Xavier, R. da S. Venerque, and M. de A. Brotel, “Response of tifton 85 to nitrogen doses and cutting intervals”, PAB, vol. 34, no. 12, pp. 2345–2352, Dec. 1999, doi: 10.1590/S1678-3921.pab1999.v34.5555.