- Adamtey, N. ; Musyoka, M.W. ; Zundel, C. ; Cobo, J.G. ; Karanja, E. ; Fiaboe, K.K. ; Muriuki, A. ; Mucheru-Muna, M. ; Vanlauwe, B. ; Berset, E. ; Messmer, M.M. ; Gattinger, A. ; Bhullar, G.S. ; Cadisch, G. ; Fliessbach, A. ; Mäder, P. ; Niggli, U. ; Foster, D. Productivity, profitability and partial nutrient balance in maize-based conventional and organic farming systems in Kenya. 2016 Agric. Ecosyst. Environ.. 235 61-79
Paper not yet in RePEc: Add citation now
- Antwi-Agyakwa, A. ; Osekre, E. ; Adu-Acheampong, R. ; Ninsin, K.D. Insecticide use practices in cocoa production in four regions in Ghana. 2015 West Afr J. App. Ecol.. 23 39-48
Paper not yet in RePEc: Add citation now
- Bhullar, G.S. ; Bautze, D. ; Adamtey, N. ; Armengot, L. ; Cicek, H. ; Goldmann, E. ; Riar, A. ; Rüegg, J. ; Schneider, M. ; Huber, B. What Is the Contribution of Organic Agriculture to Sustainable Development?: A Synthesis of Twelve Years (2007–2019) of the “Long-Term Farming Systems Comparisons in the Tropics (SysCom)”. 2021 Research Institute of Organic Agriculture: Frick, Switzerland
Paper not yet in RePEc: Add citation now
Billor, N. ; Hadi, A.S. ; Velleman, P.F. BACON: blocked adaptive computationally efficient outlier nominators. 2000 Comput. Stat. Data Anal.. 34 279-298
Binam, J.N. ; Gockowski, J. ; Nkamleu, G.B. Technical efficiency and productivity potential of cocoa farmers in west African countries. 2008 Dev. Econ.. 46 242-263
Bogetoft, P. ; Otto, L. Benchmarking with DEA, SFA, and R. 2011 Springer New York: New York, NY
Bonfiglio, A. ; Arzeni, A. ; Bodini, A. Assessing eco-efficiency of arable farms in rural areas. 2017 Agric. Syst.. 151 114-125
- Bowlin, W.F. Measuring performance: an introduction to data envelopment analysis (DEA). 1998 J. Cost Anal.. 15 3-27
Paper not yet in RePEc: Add citation now
- BSI, PAS 2050: 2008: Specification for the Assessment of the Life Cycle Greenhouse Gas Emissions of Goods and Services. 2008 :
Paper not yet in RePEc: Add citation now
- Büsser, S. ; Jungbluth, N. The role of flexible packaging in the life cycle of coffee and butter. 2009 Int. J. Life Cycle Assess.. 14 80-91
Paper not yet in RePEc: Add citation now
- Carvalho, P. ; Marques, R.C. The influence of the operational environment on the efficiency of water utilities. 2011 J. Environ. Manag.. 92 2698-2707
Paper not yet in RePEc: Add citation now
Cassman, K.G. ; Grassini, P. A global perspective on sustainable intensification research. 2020 Nat. Sustain.. 3 262-268
Cazals, C. ; Florens, J.-P. ; Simar, L. Nonparametric frontier estimation: a robust approach. 2002 J. Econ.. 106 1-25
Charnes, A. ; Cooper, W.W. ; Rhodes, E. Measuring the efficiency of decision making units. 1978 Eur. J. Oper. Res.. 2 429-444
- Claus, G. ; Vanhove, W. ; van Damme, P. ; Smagghe, G. Challenges in Cocoa Pollination: The Case of Côte d’Ivoire. Pollination in Plants. 2018 :
Paper not yet in RePEc: Add citation now
- Cobo, J.G. ; Dercon, G. ; Cadisch, G. Nutrient balances in African land use systems across different spatial scales: a review of approaches, challenges and progress. 2010 Agric. Ecosyst. Environ.. 136 1-15
Paper not yet in RePEc: Add citation now
Cooper, W.W. ; Seiford, L.M. ; Zhu, J. Data envelopment analysis. 2004 En : Handbook on Data Envelopment Analysis. Springer:
- Crowder, D.W. ; Reganold, J.P. Financial competitiveness of organic agriculture on a global scale. 2015 Proc. Natl. Acad. Sci.. 112 7611-7616
Paper not yet in RePEc: Add citation now
- Dahlin, A.S. ; Rusinamhodzi, L. Yield and labor relations of sustainable intensification options for smallholder farmers in sub-Saharan Africa. A meta-analysis. 2019 Agron. Sustain. Dev.. 39 32-
Paper not yet in RePEc: Add citation now
- Danso-Abbeam, G. Technical efficiency in Ghana’s cocoa industry: evidence from Bibiani-Anhwiaso-Bekwai District. 2012 J. Dev. Agric. Econ.. 4 -
Paper not yet in RePEc: Add citation now
- Danso-Abbeam, G. ; Baiyegunhi, L. Technical efficiency and technology gap in Ghana’s cocoa industry: accounting for farm heterogeneity. 2019 Appl. Econ.. 1-13
Paper not yet in RePEc: Add citation now
- Daouia, A. ; Laurent, T. Package ‘Frontiles’: Partial Frontier Efficiency Analysis. 2015 :
Paper not yet in RePEc: Add citation now
- Daraio, C. ; Simar, L. Advanced Robust and Nonparametric Methods in Efficiency Analysis: Methodology and Applications. 2007 Springer: New York
Paper not yet in RePEc: Add citation now
Daraio, C. ; Simar, L. Introducing environmental variables in nonparametric frontier models: a probabilistic approach. 2005 J. Prod. Anal.. 24 93-121
Daraio, C. ; Simar, L. ; Wilson, P.W. Central limit theorems for conditional efficiency measures and tests of the ‘separability’ condition in non-parametric, two-stage models of production. 2018 Econ. J.. 21 170-191
- de Klein, C. ; Novoa, R.S.A. ; Ogle, S. ; Smith, K.A. ; Rochette, P. ; Wirth, T.C. ; McConkey, B.G. ; Mosier, A. ; Rypdal, K. ; Walsh, M. N2O Emissions From Managed Soils, and CO2 Emissions From Lime and Urea Application. 2006 :
Paper not yet in RePEc: Add citation now
de Witte, K. ; Kortelainen, M. What explains the performance of students in a heterogeneous environment? Conditional efficiency estimation with continuous and discrete environmental variables. 2013 Appl. Econ.. 45 2401-2412
- FAO and AUC, Leaving No One Behind – A Regional Outlook on Gender and Agrifood Systems. 2020 Ababa: Addis
Paper not yet in RePEc: Add citation now
- FAO, Save and Grow: A policymaker’s Guide to the Sustainable Intensification of Smallholder Crop Production. 2011 Food and Agriculture Organization of the United Nations: Rome
Paper not yet in RePEc: Add citation now
- FAO, State of Knowledge of Soil Biodiversity - Status, Challenges and Potentialities. 2020 FAO:
Paper not yet in RePEc: Add citation now
- Fisher, R.A. ; Corbet, A.S. ; Williams, C.B. The relation between the number of species and the number of individuals in a random sample of an animal population. 1943 J. Anim. Ecol.. 12 42-
Paper not yet in RePEc: Add citation now
Gerten, D. ; Heck, V. ; Jägermeyr, J. ; Bodirsky, B.L. ; Fetzer, I. ; Jalava, M. ; Kummu, M. ; Lucht, W. ; Rockström, J. ; Schaphoff, S. ; Schellnhuber, H.J. Feeding ten billion people is possible within four terrestrial planetary boundaries. 2020 Nat. Sustain.. -
- Gómez-Limón, J.A. ; Picazo-Tadeo, A.J. ; Reig-Martínez, E. Eco-efficiency assessment of olive farms in Andalusia. 2012 Land Use Policy. 29 395-406
Paper not yet in RePEc: Add citation now
Gómez-Limón, J.A. ; Sanchez-Fernandez, G. Empirical evaluation of agricultural sustainability using composite indicators. 2010 Ecol. Econ.. 69 1062-1075
Grovermann, C. ; Wossen, T. ; Muller, A. ; Nichterlein, K. ; Lacetera, N. Eco-efficiency and agricultural innovation systems in developing countries: evidence from macro-level analysis. 2019 PLoS One. 14 -
- Ho, T.Q. ; Hoang, V.-N. ; Wilson, C. ; Nguyen, T.-T. Eco-efficiency analysis of sustainability-certified coffee production in Vietnam. 2018 J. Clean. Prod.. 183 251-260
Paper not yet in RePEc: Add citation now
Hollingsworth, B. ; Smith, P. Use of ratios in data envelopment analysis. 2003 Appl. Econ. Lett.. 10 733-735
- ICC, Country Coffee Profile. 2019 International Coffee Organization, ICC: Kenya
Paper not yet in RePEc: Add citation now
- IPBES, Regional and Subregional Assessments of Biodiversity and Ecosystem Services: Regional and Subregional Assessment for Africa. 2018 Intergovernmental Science-Policy Platform on Biodiversity and Ecosystem Services: Medellin, Colombia
Paper not yet in RePEc: Add citation now
- ISSER, The State of the Ghanaian Economy in 2014. 2015 Institute of Statistical Social and Economic Research (ISSER):
Paper not yet in RePEc: Add citation now
- Kamau, V. ; Ateka, J. ; Mbeche, R. ; Muendo, K. Assessment of the Technical Efficiency of Smallholder Coffee Farming Enterprises in Muranga, Kenya. 2016 :
Paper not yet in RePEc: Add citation now
- Kehlenbeck, K. ; Rohde, E. ; Njuguna, J.K. ; Jamnadass, R. Mango production in Kenya. 2012 En : Mango. Studium Press LLC: Houston, USA
Paper not yet in RePEc: Add citation now
- Kiboi, M.N. ; Ngetich, F.K. ; Mugendi, D.N. Nitrogen budgets and flows in African smallholder farming systems. 2019 AIMS Agricult. Food. 4 429-446
Paper not yet in RePEc: Add citation now
- Kolavalli, S. ; Vigneri, M. Cocoa in Ghana: Shaping the Success of an Economy. 2011 :
Paper not yet in RePEc: Add citation now
- Konstantas, A. ; Jeswani, H.K. ; Stamford, L. ; Azapagic, A. Environmental impacts of chocolate production and consumption in the UK. 2018 Food Res. Int.. 106 1012-1025
Paper not yet in RePEc: Add citation now
Kourtesi, S. ; Fousekis, P. ; Polymeros, A. Conditional efficiency estimation with environmental variables: evidence from Greek cereal farms. 2012 Sci. Bull.. 11 43-52
Kuosmanen, T. ; Kortelainen, M. Measuring eco-efficiency of production with data envelopment analysis. 2005 J. Ind. Ecol.. 9 59-72
- Kuyper, T.W. ; Struik, P.C. Epilogue: global food security, rhetoric, and the sustainable intensification debate. 2014 Curr. Opin. Environ. Sustain.. 8 71-79
Paper not yet in RePEc: Add citation now
- Lal, R. ; Stewart, B.A. Soil Degradation and Restoration in Africa. 2019 CRC Press:
Paper not yet in RePEc: Add citation now
- Laven, A. ; Boomsma, M. Incentives for Sustainable Cocoa Production in Ghana. 2012 :
Paper not yet in RePEc: Add citation now
- Lesschen, J.P. ; Stoorvogel, J. ; Smaling, E. Scaling Soil Nutrient Balances. Enabling Mesolevel Applications for African Realities. 2004 FAO: Rome, Italy
Paper not yet in RePEc: Add citation now
- Liu, X. ; Zhang, S. ; Zhang, X. ; Ding, G. ; Cruse, R.M. Soil erosion control practices in Northeast China: a mini-review. 2011 Soil Tillage Res.. 117 44-48
Paper not yet in RePEc: Add citation now
- Loland, J. ; Singh, B.R. Copper contamination of soil and vegetation in coffee orchards after long-term use of Cu fungicides. 2004 Nutr. Cycl. Agroecosyst.. 69 203-211
Paper not yet in RePEc: Add citation now
McCullough, E.B. Labor productivity and employment gaps in Sub-Saharan Africa. 2017 Food Policy. 67 133-152
- Nemecek, T. ; Kägi, T. Life Cycle Inventories of Agricultural Production Systems. 2007 Agroscope Reckenholz-Tänikon Research Station ART: Zürich and Dübendorf
Paper not yet in RePEc: Add citation now
- Niang, I. ; Ruppel, O.C. ; Abdrabo, M.A. ; Essel, A. ; Lennard, C. ; Padgham, J. ; Urquhart, P. Africa climate change 2014: impacts, adaptation, and vulnerability. 2014 En : Part B: Regional Aspects. Contribution of Working Group II to the Fifth Assessment Report of the Intergovernmental Panel on Climate Change ed VR Barros et al. :
Paper not yet in RePEc: Add citation now
- Noponen, M.R. ; Edwards-Jones, G. ; Haggar, J.P. ; Soto, G. ; Attarzadeh, N. ; Healey, J.R. Greenhouse gas emissions in coffee grown with differing input levels under conventional and organic management. 2012 Agric. Ecosyst. Environ.. 151 6-15
Paper not yet in RePEc: Add citation now
- Ntiamoah, A. ; Afrane, G. Environmental impacts of cocoa production and processing in Ghana: life cycle assessment approach. 2008 J. Clean. Prod.. 16 1735-1740
Paper not yet in RePEc: Add citation now
- Nunoo, I. ; Frimpong, B.N. ; Frimpong, F.K. Fertilizer use among cocoa farmers in Ghana: the case of Sefwi Wiawso District. 2014 Int. J. Environ.. 3 22-31
Paper not yet in RePEc: Add citation now
Ofori-Bah, A. ; Asafu-Adjaye, J. Scope economies and technical efficiency of cocoa agroforesty systems in Ghana. 2011 Ecol. Econ.. 70 1508-1518
- Onumah, J.A. ; Al-Hassan, R.M. ; Onumah, E.E. Productivity and Technical Efficiency of Cocoa Production in Eastern Ghana. 2013 :
Paper not yet in RePEc: Add citation now
- Onumah, J.A. ; Onumah, E.E. ; Al-Hassan, R.M. ; Brümmer, B. Meta-frontier analysis of organic and conventional cocoa production in Ghana. 2013 Agric. Econ.. 59 271-280
Paper not yet in RePEc: Add citation now
Onwona Kwakye, M. ; Mengistie, B. ; Ofosu-Anim, J. ; Nuer, A.T.K. ; van den Brink, P.J. Pesticide registration, distribution and use practices in Ghana. 2019 Environ. Dev. Sustain.. 21 2667-2691
- PAN, PAN International List of Highly Hazardous Pesticides. 2019 Pesticide Action Network International:
Paper not yet in RePEc: Add citation now
Picazo-Tadeo, A.J. ; Beltrán-Esteve, M. ; Gómez-Limón, J.A. Assessing eco-efficiency with directional distance functions. 2012 Eur. J. Oper. Res.. 220 798-809
- Picazo-Tadeo, A.J. ; Gómez-Limón, J.A. ; Reig-Martínez, E. Assessing farming eco-efficiency: a data envelopment analysis approach. 2011 J. Environ. Manag.. 92 1154-1164
Paper not yet in RePEc: Add citation now
- Pradhan, P. ; Fischer, G. ; van Velthuizen, H. ; Reusser, D.E. ; Kropp, J.P. ; Gonzalez-Andujar, J.L. Closing yield gaps: how sustainable can we be?. 2015 PLoS One. 10 -
Paper not yet in RePEc: Add citation now
- Pretty, J. ; Toulmin, C. ; Williams, S. Sustainable intensification in African agriculture. 2011 Int. J. Agric. Sustain.. 9 5-24
Paper not yet in RePEc: Add citation now
- Quiroz, D. ; Kuepper, B. ; Wachira, J. ; Emmott, A. Value Chain Analysis of Macadamia Nuts in Kenya: Research Commissioned by CBI. 2019 Profundo: Amsterdam
Paper not yet in RePEc: Add citation now
- R Core Team, R: A Language and Environment for Statistical Computing. 2020 R Foundation for Statistical Computing:
Paper not yet in RePEc: Add citation now
Racine, J.S. ; Hart, J. ; Li, Q. Testing the significance of categorical predictor variables in nonparametric regression models. 2006 Econ. Rev.. 25 523-544
- Racine, J.S. ; Hayfield, T. Package ‘np’: Nonparametric Kernel Smoothing Methods for Mixed Data Types. 2020 :
Paper not yet in RePEc: Add citation now
- Ran, Y. ; Annebäck, J. ; Widmark, E. ; Osborne, M. Boosting Technology Uptake: Some Ideas for Improving Small-Scale Mango Farming in Kenya. 2018 Stockholm Environment Institute: Stockholm
Paper not yet in RePEc: Add citation now
- Reynolds, T.W. ; Waddington, S.R. ; Anderson, C.L. ; Chew, A. ; True, Z. ; Cullen, A. Environmental impacts and constraints associated with the production of major food crops in Sub-Saharan Africa and South Asia. 2015 Food Secur.. 7 795-822
Paper not yet in RePEc: Add citation now
Ricciardi, V. ; Mehrabi, Z. ; Wittman, H. ; James, D. ; Ramankutty, N. Higher yields and more biodiversity on smaller farms. 2021 Nat. Sustain.. -
- Rockström, J. ; Williams, J. ; Daily, G. ; Noble, A. ; Matthews, N. ; Gordon, L. ; Wetterstrand, H. ; DeClerck, F. ; Shah, M. ; Steduto, P. ; de Fraiture, C. ; Hatibu, N. ; Unver, O. ; Bird, J. ; Sibanda, L. ; Smith, J. Sustainable intensification of agriculture for human prosperity and global sustainability. 2017 Ambio. 46 4-17
Paper not yet in RePEc: Add citation now
- Runo, B. . 2009 University of Nairobi: Kenya
Paper not yet in RePEc: Add citation now
Sarkis, J. Preparing your data for DEA. 2007 En : Zhu, J. ; Cook, W.D. Modeling Data Irregularities and Structural Complexities in Data Envelopment Analysis. Springer US: Boston, MA
Schader, C. ; Baumgart, L. ; Landert, J. ; Muller, A. ; Ssebunya, B. ; Blockeel, J. ; Weisshaidinger, R. ; Petrasek, R. ; Mészáros, D. ; Padel, S. ; Gerrard, C. ; Smith, L. ; Lindenthal, T. ; Niggli, U. ; Stolze, M. Using the sustainability monitoring and assessment routine (SMART) for the systematic analysis of trade-offs and synergies between sustainability dimensions and themes at farm level. 2016 Sustainability. 8 274-
- Schader, C. ; Curran, M. ; Heidenreich, A. ; Landert, J. ; Blockeel, J. ; Baumgart, L. ; Ssebunya, B. ; Moakes, S. ; Marton, S. ; Lazzarini, G. ; Niggli, U. ; Stolze, M. Accounting for uncertainty in multi-criteria sustainability assessments at the farm level: improving the robustness of the SMART-Farm Tool. 2019 Ecol. Indic.. 106 105503-
Paper not yet in RePEc: Add citation now
- Schader, C. ; Heidenreich, A. ; Kadzere, I. ; Egyir, I. ; Muriuki, A. ; Bandanaa, J. ; Clottey, J. ; Ndungu, J. ; Grovermann, C. ; Lazzarini, G. ; Blockeel, J. ; Borgemeister, C. ; Muller, A. ; Kabi, F. ; Fiaboe, K. ; Adamtey, N. ; Huber, B. ; Niggli, U. ; Stolze, M. How is organic farming performing agronomically and economically in sub-Saharan Africa?. 2021 Glob. Environ. Chang.. 70 102325-
Paper not yet in RePEc: Add citation now
- Schaltegger, S. ; Sturm, A. Ökologische Rationalität: Ansatzpunkte zur Ausgestaltung von ökologieorientierten Managementinstrumenten. 1990 Die Unternehmung. 44 273-290
Paper not yet in RePEc: Add citation now
- Seufert, V. ; Ramankutty, N. Many shades of gray—the context-dependent performance of organic agriculture. 2017 Sci. Adv.. 3 -
Paper not yet in RePEc: Add citation now
Sheahan, M. ; Barrett, C.B. ; Goldvale, C. Human health and pesticide use in Sub-Saharan Africa. 2017 Agric. Econ.. 48 27-41
Simar, L. ; Wilson, P.W. Estimation and inference in two-stage, semi-parametric models of production processes. 2007 J. Econ.. 136 31-64
Simar, L. ; Wilson, P.W. Hypothesis testing in nonparametric models of production using multiple sample splits. 2020 J. Prod. Anal.. 53 287-303
Simar, L. ; Wilson, P.W. Sensitivity analysis of efficiency scores: how to bootstrap in nonparametric frontier models. 1998 Manag. Sci.. 44 49-61
- Simar, L. ; Wilson, P.W. Statistical Inference in Nonparametric Frontier Models: Recent Developments and Perspectives. 2008 :
Paper not yet in RePEc: Add citation now
- Simm, J. ; Besstremyannaya, G. rDEA: Robust Data Envelopment Analysis (DEA) for R. 2020 :
Paper not yet in RePEc: Add citation now
Skevas, T. ; Stefanou, S.E. ; Oude Lansink, A. Pesticide use, environmental spillovers and efficiency: a DEA risk-adjusted efficiency approach applied to Dutch arable farming. 2014 Eur. J. Oper. Res.. 237 658-664
Udawatta, R. ; Rankoth, L. ; Jose, S. Agroforestry and biodiversity. 2019 Sustainability. 11 2879-
- UNEP, GEO-6 Regional Assessment for Africa. 2016 United Nations Environment Programme: Nairobi, Kenya
Paper not yet in RePEc: Add citation now
- USGS, Shuttle Radar Topography Mission 1 Arc-Second Global. 2014 :
Paper not yet in RePEc: Add citation now
van Dijk, M. ; Morley, T. ; Jongeneel, R. ; van Ittersum, M. ; Reidsma, P. ; Ruben, R. Disentangling agronomic and economic yield gaps: an integrated framework and application. 2017 Agric. Syst.. 154 90-99
- van Elzakker, B. ; Eyhorn, F. Developing sustainable value chains with smallholders. 2010 Internat. Fed. of Organic Agriculture Movements (IFOAM): Bonn
Paper not yet in RePEc: Add citation now
Weber, S. Bacon: an effective way to detect outliers in multivariate data using Stata (and Mata). 2010 Stata J.. 10 331-338
Wilson, P.W. Detecting outliers in deterministic nonparametric frontier models with multiple outputs. 1993 J. Bus. Econ. Stat.. 11 319-323
- Wilson, P.W. Package ‘FEAR’: Frontier Efficiency Analysis with R. 2020 :
Paper not yet in RePEc: Add citation now
World Bank, Supply Chain Risk Assessment: Cocoa in Ghana. 2011 :
Wossink, A. ; Denaux, Z.S. Environmental and cost efficiency of pesticide use in transgenic and conventional cotton production. 2006 Agric. Syst.. 90 312-328