| Deterioration of soil fertility by land use changes in South Sumatra, Indonesia: from 1970 to 1990 J Lumbanraja, T Syam, H Nishide, AK Mahi, M Utomo, Sarno, M Kimura Hydrological Processes 12 (13‐14), 2003-2013, 1998 | 96 | 1998 |
| Soil pH and solubility of aluminum, iron, and phosphorus in Ultisols: the roles of humic acid H Ifansyah Journal of Tropical Soils 18 (3), 203-208, 2014 | 74* | 2014 |
| Humus composition of soils under forest, coffee and arable cultivation in hilly areas of south Sumatra, Indonesia A Watanabe, Sarno, J Rumbanraja, K Tsutsuki, M Kimura European journal of soil science 52 (4), 599-606, 2001 | 49 | 2001 |
| Soil chemical properties of an Indonesian red acid soil as affected by land use and crop management M Iijima, J Lumbanraja, E Yuliadi, Y Izumi, A Watanabe Soil and Tillage Research 76 (2), 115-124, 2004 | 31 | 2004 |
| Effect of weed management in coffee plantation on soil chemical properties Sarno, J Lumbanraja, Afandi, T Adachi, Y Oki, M Senge, A Watanabe Nutrient Cycling in Agroecosystems 69, 1-4, 2004 | 23 | 2004 |
| Pengaruh pengolahan tanah dan aplikasi herbisida terhadap kandungan asam humat pada tanah ultisol Gedung Meneng Bandar Lampung RYA Putra FAKULTAS PERTANIAN, 2016 | 16 | 2016 |
| Pengaruh Sistem Olah Tanah terhadap Pertumbuhan, Serapan Hara dan Produksi Tanaman Jagung pada Tanah Ultisol Gedung Meneng Bandar Lampung H Oktaviansyah, J Lumbanraja, S Sunyoto, S Sarno Jurnal Agrotek Tropika 3 (3), 2015 | 16 | 2015 |
| Assessment of degradation and generation of humus in a coffee soil affected by weed cover by means of a stable carbon isotopic ratio A Watanabe, H Takada, Sarno, Afandi, T Adachi, Y Oki, M Senge European journal of soil science 58 (5), 1042-1049, 2007 | 14 | 2007 |
| Penyuluhan Dan Demplot Teknologi Pertanian Organik Dengan Demonstrasi Aplikasi Pupuk Organik Cair Dan Biopestisida Di Desa Braja Caka Kabupaten Lampung Timur DH Pangaribuan Jurnal Pengabdian Kepada Masyarakat 22 (03), 88-95, 2016 | 5 | 2016 |
| Phosphorus (P) adsorption behavior and harvested P by the sugarcane (Saccharum officinarum L.) affected by inorganic and organic fertilizer applications on an Ultisol J Lumbanraja, CP Satgada, S Sarno, M Utomo, R Hasibuan, D Dermiyati, ... Journal of Tropical soils 23 (1), 35-45, 2018 | 4 | 2018 |
| Potency of agroindustrial wastewaters for increasing dissolution of phosphate rock fertilizers A Niswati, S Yusnaini Journal of Tropical Soils 19 (1), 43-51, 2014 | 2 | 2014 |
| The effect of long-term tillage system and nitrogen fertilization on the humic and fulvic acid contents S Yusnaini, M Utomo Jurnal Tanah Tropika (Indonesia) 4 (7), 1998 | | 1998 |
