Contextual data: Democratic Republic of the Congo - Maize - All years

‹ 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 ›
Democratic Republic of the Congo total 1,154,776 1,155,040 1,155,260 1,155,400 1,155,540 1,155,681 1,155,822 1,782,273 1,892,655 1,938,043
Bandundu   183,839 183,874 183,905 183,942 183,979 184,016 184,053 283,720 301,292 308,517  
Équateur   138,174 138,200 138,227 138,254 138,281 138,308 138,335 213,256 226,463 231,894  
Kasaï Occidental   172,283 172,316 172,365 172,399 172,433 172,467 172,501 265,899 282,367 289,138  
Kasaï Oriental   195,370 195,431 195,470 195,509 195,548 195,587 195,626 301,567 320,244 327,924  
Katanga   241,014 241,060 241,103 241,151 241,199 241,247 241,295 371,977 395,015 404,488  
Kinshasa Rural   13,257 13,260 13,262 13,265 13,268 13,271 13,274 20,460 21,727 22,248  
Kongo Central   19,313 19,317 19,316 19,230 19,144 19,059 18,974 29,808 31,654 32,413  
Maniema   32,814 32,839 32,832 32,839 32,846 32,853 32,860 50,634 53,770 55,059  
Nord-Kivu   45,097 45,106 45,113 45,122 45,131 45,140 45,149 69,600 73,911 75,684  
Orientale   97,784 97,803 97,827 97,847 97,867 97,887 97,907 150,918 160,265 164,108  
Sud-Kivu   15,831 15,834 15,840 15,842 15,844 15,846 15,848 24,434 25,947 26,570  

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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