Kasa, L. and Michael, P. (2026) “Investigating the importance of solid piggery sludge application in soil for signal grass (Urochloa decumbens) production in the humid lowland agroclimatic conditions in Papua New Guinea”, Bulgarian Journal of Soil Science, Agrochemistry and Ecology, 60(3), pp. 23–37. doi:10.61308/CGCK5208.