Herbage yield and quality of Neel (Indigofera tinctoria L.) as influenced by shade levels and planting dates. Open Access Journal of Medicinal and Aromatic Plants, India, v. 9, n. 1, p. 12–17, 2018. Disponível em: https://epubs.icar.org.in/index.php/JMAP/article/view/78429. Acesso em: 19 oct. 2025.