Timing of nitrogen application and cover crops on upland rice economic viability - Pascoaloto, Isabô Melina; Crusciol, Carlos Alexandre Costa; Nascimento, Carlos Antônio Costa do; Ferreira, Carlos Magri; Silva, Mellissa Ananias Soler da; Souza, Luiz Gustavo Moretti de; Esperancini, Maura Seiko Tsutsui (Pesquisa Agropecuária Brasileira, 2021)