Kamei , D. 2021. 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. 1, 1 (Nov. 2021), 38-42. DOI:https://doi.org/10.55124/jahr.v1i1.139.