Guinea, Maize, 2007

Guinea's estimated postharvest losses for maize in 2007 was 130,466 tonnes or 18.0%.

As for nutrition 455 billion kcal were lost, which is the equivalent of more than 542 thousand 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 Labé.

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	611295
2012	641044
2013	672245
2014	698462
2015	727308
2016	765536
2017	817286
2018	818544
2019	773452
2020	792509

Produced	725,012 tonnes
Estimated postharvest losses	18.0% / 130,466 tonnes

Production quantity	Estimated postharvest losses
82.0049 Production quantity: 725,012 tonnes	18.0 Estimated PHL: 130,466 tonnes

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

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	93.58 Remaining: 93.58% Est. PHL: 6.42%	6.42 Remaining: 93.58% Est. PHL: 6.42%
Further drying	89.58 Remaining: 89.58% Est. PHL: 4%	4 Remaining: 89.58% Est. PHL: 4%
Threshing and Shelling	88.26 Remaining: 88.26% Est. PHL: 1.32%	1.32 Remaining: 88.26% Est. PHL: 1.32%
Transport from field	85.90286 Remaining: 85.90286% Est. PHL: 2.35714%	2.35714 Remaining: 85.90286% Est. PHL: 2.35714%
Household-level storage	80.63911 Remaining: 80.63911% Est. PHL: 5.26375%	5.26375 Remaining: 80.63911% Est. PHL: 5.26375%
Transport to market	80.63911 Remaining: 80.63911% Est. PHL: 0%	0 Remaining: 80.63911% Est. PHL: 0%
Market storage	80.63911 Remaining: 80.63911% Est. PHL: 0%	0 Remaining: 80.63911% Est. PHL: 0%

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

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

542,134

people, 4.2%

Children 1-3

1,265,184

children, 102.8%

Pregnant women 19-30

457,956

women, 349.5%

Men 31-50

405,418

men, 32.7%

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