Contextual data: Senegal - Rice - All years

‹ 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022
Senegal total 627,660 436,299 559,165 906,349 868,413 1,007,279 380,277 587,527 1,349,723 1,346,147
Dakar   0 0 0 0 0 0 0 0 0 0  
Diourbel   0 0 0 0 0 0 0 0 0 0  
Fatick   1,401 4,905 6,467 15,982 12,293 14,855 7,400 9,772 17,191 13,585  
Kaffrine   321 274 141 478 592 708 289 1,592 562 259  
Kaolack   577 1,509 698 5,525 3,315 4,431 3,325 1,640 3,056 616  
Kédougou   4,661 4,067 12,995 18,750 22,628 18,326 93,544 15,051 38,279 37,215  
Kolda   22,723 14,940 20,191 162,964 124,913 252,831 127,972 99,173 369,330 376,078  
Louga   144 144 144 705 705 456 0 144 0 0  
Matam   48,750 35,213 35,920 42,896 60,871 52,465 0 33,252 46,828 42,359  
Saint-Louis   470,850 306,594 379,894 399,224 420,636 400,291 0 208,683 302,832 368,465  
Sédhiou   30,513 32,660 70,721 174,264 155,230 142,025 62,831 140,259 333,011 292,022  
Tambacounda   4,637 2,885 5,683 6,843 5,530 19,353 678 7,040 22,008 24,889  
Thiès   1 1 1 0 0 1 0 1 0 0  
Ziguinchor   43,082 33,107 26,310 78,718 61,700 101,537 84,238 70,920 216,626 190,659  

Data version 2.19.3

Contextual data

Collected data

Values obtained from primary and secondary sources

Approximated data

Values approximated based on other data for same location

–No data

Not applicable or no data available

LGB Larger Grain Borer (Prostephanus truncatus) read more ›

Storage beetle pest of maize and dried cassava

Contextual data

Contextual factors relate to local conditions and practices that may affect losses on a seasonal or annual basis, such as weather, pest incidence, grain drying conditions and the length of household-level storage.

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APHLIS network and team members collect this data from official sources (e.g. ministries of agriculture and statistics offices), published research studies and national surveys etc, or by interviewing farmers, extension workers or other key informants. This data enables APHLIS to apply the relevant loss figures from the PHL profiles depending on seasonal circumstances, and convert percentage losses into absolute losses (in tonnes) using the production figures. Based on the postharvest loss profiles and contextual factors, APHLIS estimates postharvest losses at the provincial, national and regional levels.

The contextual dataset includes production quantities (t), whether it rained at harvest, the percentage of the crop marketed during first 3 months after harvest, household-level storage duration, and presence of specific pests (for example the larger grain borer, LGB, Prostephanus truncatus) which are used to contextualise the loss profile for each year. The importance of different types of contextual factors may vary between crops, and data for the most relevant contextual factors is shown and used in the loss estimate calculations.

For specific crop, location, year combinations where contextual data is not available, approximated data has been used. This is calculated based on the contextualised data which has been provided for the same location. Approximated contextual data is shown in grey. 

Read more about how APHLIS estimates losses ›

Contextual factors

Production quantity (t) the quantity of grain produced on small and large farms for each growing season.

Rain at harvest whether or not there is damp weather at time of harvest which would make drying the grain difficult. If there is rain at harvest then the value for the harvesting link in the PHL profile is increased.

% sold during first 3 months the proportion of grain that is marketed within the first three months, i.e. that will not enter farm storage for any significant time. This proportion of the production will not be subject to farm storage losses but instead will be affected by transport and market storage losses.

Household-level storage duration (months) the length of time that grain was stored at household-level. If household-level storage is less than 3 months then household-level storage loss is reduced to 0%, if 3 to 6 months it will be only 50% of the loss profile figure, or if 6 months or more than 100% of the household-level storage loss is applied.

LGB presence in the case of maize, whether or not LGB (the larger grain borer, Prostephanus truncatus) is expected to be a significant pest. If LGB is a serious pest in that particular season then storage losses are multiplied by 2.

Season

In locations where there is more than one growing season each year, seasonal production data for each of the growing seasons is inputted. These are labelled as first, second, third season.

Farm type

In locations where there are both smallholder farms and large-scale commercial farms, the contextual data is shown for each of these types.

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