South Africa, Maize, 2018

South Africa's estimated postharvest losses for maize in 2018 was 350,215 tonnes or 14.9% which had an estimated value of more than 57 million US dollar, which corresponds to 0.7% of national agricultural GDP.

As for nutrition 1,215 billion kcal were lost, which is the equivalent of more than 1 million people, in terms of annual nutritional dietary energy requirements. In the value chain, the majority of the loss is estimated to be happening at Harvesting/field drying, Household-level storage, and then Further drying. Highest estimated postharvest maize losses in tonnes were estimated to occur in Free State.

To view the list of studies used to estimate these losses, please see the References tab.

Production quantity and estimated postharvest losses

  • Production quantity (tonnes)
  • Estimated postharvest losses (tonnes)
2011–2021
2011 12531310
2012 2355586
2013 12427938
2014 2355586
2015 2355586
2016 2355586
2017 2355586
2018 2355586
2019 2355586
2020 2355586
Produced 2,355,586 tonnes
Estimated postharvest losses 14.9% / 350,215 tonnes / > 57 million USD
Production quantity Estimated postharvest losses
85.1326 Production quantity: 2,355,586 tonnes 14.9 Estimated PHL: 350,215 tonnes

See full postharvest losses data table with estimated losses in percentage › | tonnes › | USD ›

Value chain

Production quantity and estimated postharvest losses in % per value chain step. Please note that once loss has occurred at harvesting, the percentage loss in the next stage is a percentage of what remained, not of the original amount.

  • Estimated % of crop left
  • Estimated % of crop lost
Amount remaining(%) Estimated postharvest loss(%)
Production 100 Remaining: 100%
Est. PHL: 0%
0 Remaining: 100%
Est. PHL: 0%
Harvesting/field drying 95.61869 Remaining: 95.61869%
Est. PHL: 4.38131%
4.38131 Remaining: 95.61869%
Est. PHL: 4.38131%
Further drying 92.00695 Remaining: 92.00695%
Est. PHL: 3.61174%
3.61174 Remaining: 92.00695%
Est. PHL: 3.61174%
Threshing and Shelling 89.96395 Remaining: 89.96395%
Est. PHL: 2.043%
2.043 Remaining: 89.96395%
Est. PHL: 2.043%
Transport from field 87.9481 Remaining: 87.9481%
Est. PHL: 2.01585%
2.01585 Remaining: 87.9481%
Est. PHL: 2.01585%
Household-level storage 83.7747 Remaining: 83.7747%
Est. PHL: 4.1734%
4.1734 Remaining: 83.7747%
Est. PHL: 4.1734%
Transport to market 82.7747 Remaining: 82.7747%
Est. PHL: 1%
1 Remaining: 82.7747%
Est. PHL: 1%
Market storage 80.1247 Remaining: 80.1247%
Est. PHL: 2.65%
2.65 Remaining: 80.1247%
Est. PHL: 2.65%

See full value chain data table with estimated losses in percentage › | tonnes › | USD ›

Nutrition

Number of people whose annual dietary requirements (in terms of energy, kcal) could have been met by consuming the maize that was lost postharvest, and what % of the focal group of the population this number equates to.

Total number

1,359,652

people, 2.4%


Children 1-3

3,376,712

children, 98.6%


Pregnant women 19-30

1,222,261

women, 603.0%


Men 31-50

1,082,040

men, 14.1%

See full nutritional impact data for Children 1–3 › | Pregnant women 19–30 › | Men 31–50 ›