SINGH, SUDEEP; BUTTAR, G S; SINGH, PARAMJIT. Yield and nutrient uptake of isabgol (Plantago ovata) in response to sowing dates and spacing. The Indian Journal of Agricultural Sciences, Delhi, India, v. 80, n. 12, 2010. Disponível em: https://epubs.icar.org.in/index.php/IJAgS/article/view/2128. Acesso em: 27 oct. 2025.