| Integrated soil fertility management: operational definition and consequences for implementation and dissemination B Vanlauwe, A Bationo, J Chianu, KE Giller, R Merckx, U Mokwunye, ... Outlook on agriculture 39 (1), 17-24, 2010 | 867 | 2010 |
| Assessment of soil nutrient depletion in Sub-Saharan Africa: 1983-2000. Vol. 3: Literature review and description of land use systems JJ Stoorvogel, EMA Smaling SC-DLO, 1990 | 842* | 1990 |
| Calculating soil nutrient balances in Africa at different scales: I Supra-national scale JJ Stoorvogel, EMA Smaling, BH Janssen Fertilizer research 35, 227-235, 1993 | 788 | 1993 |
| A system for quantitative evaluation of the fertility of tropical soils (QUEFTS) BH Janssen, FCT Guiking, D van der Eijk, EMA Smaling, J Wolf, ... Geoderma 46 (4), 299-318, 1990 | 719 | 1990 |
| Soil fertility in Africa is at stake EMA Smaling, SM Nandwa, BH Janssen Replenishing soil fertility in Africa 51, 47-61, 1997 | 639 | 1997 |
| Calculating soil nutrient balances in Africa at different scales: II. District scale EMA Smaling, JJ Stoorvogel, PN Windmeijer Fertilizer research 35, 237-250, 1993 | 402 | 1993 |
| African soils: their productivity and profitability of fertilizer use A Bationo, AE Hartemink, O Lungu, M Naimi, PF Okoth, EMA Smaling, ... | 272 | 2007 |
| Assessment of soil nutrient depletion in sub-Saharan Africa: 1983–2000. Report 28, Winand Staring Centre for Integrated Land JJ Stoorvogel, EMA Smaling Soil and Water Research (SC-DLO), Wageningen, 1990 | 272 | 1990 |
| Assessment of soil nutrient depletion in sub-Saharan Africa: 1983–2000. Report 28, Winand Staring Centre for Integrated Land JJ Stoorvogel, EMA Smaling Soil and Water Research (SC-DLO), Wageningen, 1990 | 272 | 1990 |
| An agro-ecological framework for integrated nutrient management, with special reference to Kenya EMA Smaling PQDT-Global, 1993 | 261 | 1993 |
| Rice yields and yield gaps in Southeast Asia: past trends and future outlook AG Laborte, KC de Bie, EMA Smaling, PF Moya, AA Boling, ... European Journal of Agronomy 36 (1), 9-20, 2012 | 239 | 2012 |
| A decision-support model for monitoring nutrient balances under agricultural land use (NUTMON) EMA Smaling, LO Fresco Geoderma 60 (1-4), 235-256, 1993 | 224 | 1993 |
| Mapping the irrigated rice cropping patterns of the Mekong delta, Vietnam, through hyper-temporal SPOT NDVI image analysis TTH Nguyen, C De Bie, A Ali, EMA Smaling, TH Chu International journal of remote sensing 33 (2), 415-434, 2012 | 200 | 2012 |
| Calibration of QUEFTS, a model predicting nutrient uptake and yields from chemical soil fertility indices EMA Smaling, BH Janssen Geoderma 59 (1-4), 21-44, 1993 | 193 | 1993 |
| Soil nutrient depletion in sub-Saharan Africa EMA Smaling The Role of Plant Nutrients for Sustainable Food Production in Sub-Saharan …, 1993 | 182 | 1993 |
| Soil fertility research in sub‐Saharan Africa: New dimensions, new challenges EMA Smaling, AR Braun Communications in Soil Science and Plant Analysis 27 (3-4), 365-386, 1996 | 178 | 1996 |
| Classifying, monitoring and improving soil nutrient stocks and flows in African agriculture. EMA Smaling, LO Fresco, A de Jager Ambio 25, 492-496, 1996 | 177 | 1996 |
| Assessment of soil nutrient balance: approaches and methodologies RN Roy, RV Misra, JP Lesschen, EMA Smaling Food & Agriculture Org., 2003 | 176 | 2003 |
| Environmental crisis or ‘lie of the land’? The debate on soil degradation in Africa N Koning, E Smaling Land use policy 22 (1), 3-11, 2005 | 169 | 2005 |
| A spatially explicit methodology to quantify soil nutrient balances and their uncertainties at the national level JP Lesschen, JJ Stoorvogel, EMA Smaling, GBM Heuvelink, A Veldkamp Nutrient Cycling in Agroecosystems 78 (2), 111-131, 2007 | 155 | 2007 |
