1. Performance of some populations of maize (Zea mays L.) on peat soil applied Sludge and ash of oil palm. (May 2019) Authors: Lubis, K; Siddik, S S; Setiado, H Journal: IOP conference series Issue: Volume 260(2019) Page Start: Record Type: Journal Article View Content: Available online (eLD content is only available in our Reading Rooms) ↗