Citation | Budi, G.P., T.A. Pangestu, A. Suyadi, O.D. Hajoeningtijas and H. Firmansyah. 2025. Application of weed extracts from billygoat (ageratum conyzoides) and siam (chromolaena odorata) to control late blight (phytophthora infestans) on potatoes. Sarhad Jurnal of Agriculture, 41(4): 1523-1530. DOI | https://dx.doi.org/10.17582/journal.sja/2025/41.4.1523.1530