Postharvest loss profiles (PHL profiles) quantify the expected loss – as a percentage – at each point along the postharvest chain. This loss data is collected by reviewing scientific literature and is broken down by crop, type of farm and climate type (based on the Köppen-Geiger climate classification). These profiles provide percentage loss figures for the various crops throughout the value chain under varying conditions and are updated as new research becomes available.
We are always looking to improve our postharvest loss estimates. If you know of any interesting studies, or if you have any field data that we could include in our algorithm, please email us on info@aphlis.net
The APHLIS method of estimating losses
Hodges, R., Bernard, M., Rembold, F. (2014). APHLIS – Postharvest cereal losses in Sub-Saharan Africa, their estimation, assessment and reduction. European Commission, JRC Technical reports, 160 pp.
Losses by value chain step
Harvesting/field drying
Bakhwar, A. O., Baoom, A. A., Bokair, Alssagheer, M. A. (2005): Harvesting and threshing losses of sorghum and wheat in mid high lands region/Dhammar. University of Aden Journal of Natural and Applied Sciences, 9 (1), 47-54
Boxall RA (1998): Grains post-harvest loss assessment in Ethiopia. Final report NRI Report No 2377. Natural Resources Institute, Chatham, UK. pp 44.
De Lima C.P.F. (1982): Strengthening the food conservation and crop storage section (Ministry of Agriculture and Co-operatives, Swaziland). (Ministry of Agriculture and Co-operatives, Swaziland). Field documents and final technical report. Project PFL/SWA/002. Rome, FAO.
Silim M.N., Odogola W., Amenet J. (1991): Techncial report of the post havrest loss prevention project 1987-1991. FAO (PFL/UGA/001), pp 131.
Smit C. (1985): Post-harvest losses of some staples crops at farm level in Africa. Report on the regional workshop on national programming and intercountry co-operation prevention of food losses Volume II. UN Food and Agriculture Organisation, African Regional Centre for Technology, Dakar Senegal 6-10 May 1985. pp. 124-137.
Vervroegen D., Yehwola F. (1990): Project for the identification of post-production grain losses and training on their eeduction in Wollo Region, Ethiopia. FAO terminal report, Action Programme for the prevention of Food Losses. FAO terminal report, Action Programme for the prevention of Food Losses. United Nations Food and Agricaulture Organisation, pp. 17
Singano C. (2008): Singano C. (pers comm.) Principal Agricultural Research Scientist, Department of Agricultural Research Services, Malawi. Ppers comm. Principal Agricultural Research Scientist, Department of Agricultural Research Services, Malawi.
Further drying
Threshing and Shelling
Bakhwar, A. O., Baoom, A. A., Bokair, Alssagheer, M. A. (2005): Harvesting and threshing losses of sorghum and wheat in mid high lands region/Dhammar. University of Aden Journal of Natural and Applied Sciences, 9 (1), 47-54
Boxall RA (1998): Grains post-harvest loss assessment in Ethiopia. Final report NRI Report No 2377. Natural Resources Institute, Chatham, UK. pp 44.
Vervroegen D., Yehwola F. (1990): Project for the identification of post-production grain losses and training on their eeduction in Wollo Region, Ethiopia. FAO terminal report, Action Programme for the prevention of Food Losses. FAO terminal report, Action Programme for the prevention of Food Losses. United Nations Food and Agricaulture Organisation, pp. 17
Singano C. (2008): Singano C. (pers comm.) Principal Agricultural Research Scientist, Department of Agricultural Research Services, Malawi. Ppers comm. Principal Agricultural Research Scientist, Department of Agricultural Research Services, Malawi.
Winnowing
Boxall RA (1998): Grains post-harvest loss assessment in Ethiopia. Final report NRI Report No 2377. Natural Resources Institute, Chatham, UK. pp 44.
Vervroegen D., Yehwola F. (1990): Project for the identification of post-production grain losses and training on their eeduction in Wollo Region, Ethiopia. FAO terminal report, Action Programme for the prevention of Food Losses. FAO terminal report, Action Programme for the prevention of Food Losses. United Nations Food and Agricaulture Organisation, pp. 17
Transport from field
Boxall RA (1998): Grains post-harvest loss assessment in Ethiopia. Final report NRI Report No 2377. Natural Resources Institute, Chatham, UK. pp 44.
Vervroegen D., Yehwola F. (1990): Project for the identification of post-production grain losses and training on their eeduction in Wollo Region, Ethiopia. FAO terminal report, Action Programme for the prevention of Food Losses. FAO terminal report, Action Programme for the prevention of Food Losses. United Nations Food and Agricaulture Organisation, pp. 17
Singano C. (2008): Singano C. (pers comm.) Principal Agricultural Research Scientist, Department of Agricultural Research Services, Malawi. Ppers comm. Principal Agricultural Research Scientist, Department of Agricultural Research Services, Malawi.
Household-level storage
Haile A. (2006): On-farm studies on sorghum and chickpea in Eritrea. African Journal of Biotechnology 5 (17) 1537-1544.
Hodges R.J., Hall A.J., Jayaraj K., Jaiswal P., Potdar N., Yog, B., Navi S.S. (1999): Quality changes in farm-stored sorghum grown in the wet or dry season in South India: A technical and social study. NRI Report 2412. Natural Resources Institute, Chatham Maritime, Kent ME4 4TB, UK. pp. 33
Kidane, Y., Habteyes Y. (1989): Food grain losses in tradional storage facilities in three areas of Ethiopia. In: Proceedings of 'Towards a food and nutrition strategy for Ethiopia'. Alemaya University of Agriculture, 8-12 December 1986, Alemaya, Ethiopia.
Nyambo B.T. (1993): Post-harvest maize and sorghum grain losses in tradtional and imporved stores in South Nyanza district, Kenya. International Journal of Pest Management, 39(2) 181-187
Ratnadass A. (1990): Les pertes occasionnees par les insectes au sorgho stocke dans des village de l'Ouham-Pende et de l'Ouham (Republique centrafricaine). L'Agromomie Tropicale 45 (1) 31- 41
Ratnadass A., Cisse B., Diarra D., Sidibe B, Sogoba B., Thiero C.A.T. (1999): Faune des stocks de sorgho dans deux regions du Mali et comparaison des pertes infligees aux varieties locales ou introduites pour ameliorer le rendement. Annales de la Societe Entomologie de France 35, 489-495.
Seifelnasr Y.E. (1992): Stored grain insects found in sorghum stored in the central production belt of Sudan and losses cause. Tropical Science 32, 223-230
Singano C. (2008): Singano C. (pers comm.) Principal Agricultural Research Scientist, Department of Agricultural Research Services, Malawi. Ppers comm. Principal Agricultural Research Scientist, Department of Agricultural Research Services, Malawi.
Ratnadass A., Berte S., Diarra D., Cisse B. (1994): Insect losses on sorghum stored in selected Malian villages, with particular emphasis on varietal differences in grain resistance. In: Proceedings of the 6th Working Conference on Stored Products Protection, Canberra, Australia, 17 - 22 April 1994. Eds. Highley E., Wright E.J., Banks H.J. and Champ B.R.,. Volume 2, pp 953-959.
Transport to market
Odogola W.R., Henriksson R. (1991): Post harvest management and storage of maize. UNDP/OPS Regional Programme, Harare December 1991. (very useful background on post-harvest handling)
Market storage
Boxall RA (1998): Grains post-harvest loss assessment in Ethiopia. Final report NRI Report No 2377. Natural Resources Institute, Chatham, UK. pp 44.
Egyir I.S., Sarpong D.B., Obeng-Ofori D. (2011): M&E System for post harvest losses (Pilot Study) Policy Planning, Monitoring and Evaluation Directorate, Ministry of Food and Agriculture, Ghana. Final Report. Pp. 106
Nutritional losses
FAO, (2010). Fats and fatty acids in human nutrition. Report of an expert consultation. FAO, Food and Nutrition Paper, 91.
FAO/WHO, (2007).
Institute of Medicine (IoM), (2005). Dietary Reference Intakes for Energy, Carbohydrate, Fiber, Fat, Fatty Acids, Cholesterol, Protein, and Amino Acids. Washington, DC: The National Academies Press. 1358 pp. Institute of Medicine (IoM), (2011).
Nutrition for Developing Countries, (2015). Appendix 1. Tables of energy requirements and recommended intakes of nutrients. Kind, F.S., Burgess, A., Quinn, V.J., Osei, A.K. (Eds). pp 322-326. 3rd edition. Oxford University Press.
USAID (undated). STATcompiler: The DHS Program, Demographic and Health Surveys.
UNESDA (United Nations Department of Economics and Social Affairs), (2017). World Population Prospects: The 2017 Revision.
Nutritional impact
The calculations for nutritional impact are based on the same studies as nutritional losses above.
Financial impact
APHLIS, 2019. Postharvest losses data (dry weight loss (t)).
Boxall, R.A., 2002. Damage and loss caused by the Larger Grain Borer Prostephanus truncatus. Integrated Pest Management Reviews, 7: 105-121.
Dick, K., 1989. A review of insect infestation of maize in farm storage in Africa with special reference to the ecology and control of Prostephanus truncatus. Overseas Development Natural Resources Institute, Chatham, UK: Bulletin 18, pp. 42.
Dunstan, W.R. & Magazini, I. 1980. Outbreaks and new records. Tanzania. The larger grain borer on stored products. FAO Plant Protection Bulletin. 29:80–81.
Golob, P., 2002. Chemical, physical and cultural control of Prostephanus truncatus. Integrated Pest Management Reviews, 7: 245-277.
Hodges, R.J., Dunstan, W.R., Magazini, I., Golob, P. 1983. An outbreak of Prostephanus truncatus (Horn) (Coleoptera: Bostrichidae) in East Nang’ayo, F.L.O., Hill, M.G., Chandi, E.A., Nzeve, N.V. and Obiero, J. The natural environment as a reservoir for the larger grain borer Prostephanus truncatus (Horn) (Coleoptera: Bostrichidae) in Kenya. African Crop Science Journal, 1(1): 39–47.
Muatinte, B.M., Boukouvala, M., Garcia-Lara, S., Lopez-Castillo, L.M., 2019. The threat of the larger grain borer, Prostephanus truncatus (Coleoptera: Bostrichidae) and practical control options for the pest. CAB Reviews Perspectives in Agriculture Veterinary Science Nutrition and Natural Resources, 14(041): 1-25.
Makundi, R.H., Swila, N.N., Misangu, R.N., Reuben, S.W.M., Mwatawala, M., Sikira, A., Kilonzo, B.S., Lyimo, H., et al. 2010. Dynamics of infestation and losses of stored maize due to the larger grain borer (Prostephanus truncatus Horn) and maize weevils (Sitophilus zeamais Motschulsky). Archives of Phytopathology and Plant Protection, 43(14):1346–1355. DOI: 10.1080/03235400802425804.
Mlambo, S., Mvumi, B.M., Stathers, T., Mubayiwa, M. & Nyabako, T. 2017. Field efficacy of hermetic and other maize grain storage options under smallholder farmer management. Crop Protection, 98: 198–210. DOI: 10.1016/j.cropro.2017.04.001.
Mlambo, S., Mvumi, B.M., Stathers, T., Mubayiwa, M. & Nyabako, T. 2018. Field efficacy and persistence of synthetic pesticidal dusts on stored maize grain under contrasting agro-climatic conditions. Journal of Stored Products Research, 76: 129-139. DOI: 10.1016/j.jspr.2018.01.009.