KAMEI , D. . Benefit: Cost Ratio (BCR) analysis of Botanical extracts against Brown spot disease of rice caused by Helminthosporium oryzae (Breda de Haan). Journal of Advanced Agriculture & Horticulture Research, [S. l.], v. 1, n. 1, p. 38-42, 2021. DOI: 10.55124/jahr.v1i1.139. Disponível em: https://jahr.sciforce.org/JAHR/article/view/139. Acesso em: 1 may. 2024.