“…The flaxseed is little explored in research in Brazil, resulting in low use and technical knowledge about the crop, generating a lack of information about proper management, responses to fertilization, and, likewise, the appropriate supply of nitrogen. Studies on nitrogen manuring are carried out in countries such as Egypt (El-Gedwy et al, 2018;Emam, 2019;Abdel-Kader & Mousa 2019;El-Gedwy, 2018), Ethiopia (Taddese & Tenaye, 2018), Kenya (Kariuki et al, 2014), Iran (Khajani et al, 2012), Canada (Ibrahim, 2009), China (Shi & Zhao, 2018;Zhang et al, 2020), India (Chopra & Badiyala, 2016;Patel et al, 2017), Russia (Prakhova & Turina, 2021), Iran (Khajani et al, 2012), Japan (Hatanaka et al, 2021) and Poland (Andruszczak et al, 2015).…”