SOLANKI, N S; SHAKTAWAT, R P. Effect of date of sowing and nitrogen on growth and yield of isabgol (Plantago ovata). The Indian Journal of Agricultural Sciences, Delhi, India, v. 69, n. 7, 2013. Disponível em: https://epubs.icar.org.in/index.php/IJAgS/article/view/26929. Acesso em: 28 oct. 2025.