de Souza, Augusto Ferreira, and Sebastião Marcio de Azevedo. 1994. “Effect of Row Spacing and Rice Seed Density under Sprinkler Irrigation (central Pivot)”. Pesquisa Agropecuaria Brasileira 29 (12):1969-72. https://doi.org/10.1590/S1678-3921.pab1994.v29.4255.