Gonçalves PA de S, Araújo ER de, Vieira Neto J, Higashikawa FS, Mora C. Doses of ash from carbonized rice husk on the incidence and damage of thrips, downy mildew severity and yield of onion under organic system. Revista Vértices. 2017;19(2):53-60. doi:10.19180/1809-2667.v19n22017p53-60