National Survey of Agricultural Export Commodities 2007
Nigeria, 2007
Get MicrodataIdentification
NGA_2007_NSAEC_v01_M
National Survey of Agricultural Export Commodities 2007
Fourth round
No translation
| Name | Country code |
|---|---|
| Nigeria | NGA |
Agricultural Survey [ag/oth]
This edition is the fourth in the series of survey project conducted by the Technical Committee of the Consultative Committee on Agricultural Export Commodity Statistics (CCAECS). Fourteen crops were studied in the past three surveys; two crops (Cassava & Kolanut) were however added during the 2006/07 survey year. The survey was jointly carried out by four federal agencies namely: National Bureau ofStatistics (NBS), Central Bank of Nigeria (CBN), Federal Ministry of Agriculture & Water Resources (FMA&WR) and Federal Ministry of Commerce and Industry (FMC&I).
The major objectives of the survey include:
i. To ascertain the spread of the cultivation of each of the sixteen export crops within Nigeria in terms of area cultivated by State.
ii. To provide a national basic data series on agricultural export commodities.
iii. To provide structural data on agricultural export commodities in Nigeria.
iv. To obtain socio-economic data and demographic characteristics of holders within households.
v. To provide production estimates at national and State levels.
Sample survey data [ssd]
State, household, individual
Scope
The scope for data collected was as follows:
– Access to land by type of tenure
– Area cultivated under each crop
– Production in terms of output of each crop
– Use of farm inputs: fertilizer, pesticides and seedlings
– Access to credit facilities
– Employment
– Market channels
– Farmgate and open market prices
– Consumption from own-production
– Transportation and storage
– Use and access to farm implements.
| Topic | Vocabulary | URI |
|---|---|---|
| agricultural, forestry and rural industry [2.1] | CESSDA | http://www.nesstar.org/rdf/common |
| community, urban and rural life [13.1] | CESSDA | http://www.nesstar.org/rdf/common |
Coverage
National coverage
Farming households that export the selected crops from the national sample.
Producers and sponsors
| Name | Affiliation |
|---|---|
| National Bureau of Statistics (NBS) | Federal Government of Nigeria (FGN) |
| Name | Affiliation | Role |
|---|---|---|
| Central Bank of Nigeria | Fedral Government of Nigeria (FGN) | collaboration |
| Federal Ministry of Agriculture & Rural Development | Fedral Government of Nigeria (FGN) | collaboration |
| Federal Ministry of Commerce | Fedral Government of Nigeria (FGN) | collaboration |
| Name | Role |
|---|---|
| Central Bank of Nigeria | Funding |
| Name | Affiliation | Role |
|---|---|---|
| Ministry Department and Agency | MDAs | Technical Surport |
Sampling
192 LGAs were selected nationwide. A 2-stage sample design was employed. In the first stage, 10 EAs were systematically selected from each sampled LGA. Of the expected 1,920 EAs, only 1,855 were found to have export crops and were eventually studied. In the second stage, 10 export crop farming housing units were systematically selected from each sampled EA (provided there were more than 10 farming housing units in the EA). Where there were 10 or less farming housing units, no selection was required and all available housing units were studied.
No deviations
Nationally, a 100 percent response rate was acheived at LGA level. 96.61 percent at EA level while 84.00 percent was acheived at export crop farming housing units level. Reasons for non-response was not given.
The formula adopted in calculating the design weights for the survey data (sample results) were as follows:
(i) The probability of selecting an EA within a state was obtained by dividing the total number of EAs sampled in a state by total number of EAs in that particular state. Let this be represented by fj. That is,
fj = (Total Number of EAs sampled in a state)/(Total Number of EAs in that particular State)
(ii) Likewise, the probability of selecting an housing unit (HU) within an EA was obtained by dividing the total number of housing units selected in an EA by the total number of housing units (HUs) listed in that particular EA. Let this be represented by fk. That is,
fk = (Total Number of HUs selected in an EA)/(Total Number of HUs listed in that particular EA)
Then the product (fj) x (fk) represented by f is the sampling fraction for each of the corresponding study unit (Enumeration Area) for all the EAs canvassed. The inverse of the sampling fraction is known as the design weight and was applied accordingly to all the study units.
Mathematically,
Design weight = ((Total number of EAs in a state)/(Total number of EAs sampled in that particular state)) X ((Total Number of HUs listed in an EA)/(Total Number of HUs selected in that particular EA))
Survey instrument
The questionnaire has a total of thirteen sections, listed below:
Section (i) Holding Characteristics (Qu. 1-3)
Section (ii) Access to land (Qu.4-6)
Section (iii) Sources of fund (Qu.7)
Section (iv) Export-crop farming (Qu.8-10)
Section (v) Farm implements (Qu.11-14)
Section (vi) Storage/Processing (Qu.15-18)
Section (vii) Employment in export crop farms (Qu.19)
Section (viii) Market channels (Qu.20)
Section (ix) Farm gate sales (Qu.21)
Section (x) Open market sales (Qu.22&23)
Section (xi) Consumption from own production (Qu.24)
Section (xii) Use of fertilizers (Qu.25-31)
Section (xiii) Use of pesticides, insecticides/herbicides(Qu.32-37)
Section (xiv) Use of improved seedlings/seeds (Qu.38-43)
Data collection
| Start | End | Cycle |
|---|---|---|
| 2007-09-01 | 2007-09-21 | 20 days |
2004/2005
| Name | Affiliation |
|---|---|
| National Bureau of Statistics | Fedral Government of Nigeria (FGN) |
In order to ensure a high quality data, two phased quality check exercises were put in place. During the first exercise, the officers skim-checked and spot-checked the listing forms and ten selected questionnaires in the selected EAs in each State and FCT. Farmers were randomly selected and visited on their farms to authenticate the data entries made by enumerators. In the second exercise, the headquarters based quality check was carried out by the highly trained officers from Federal Ministry of Agriculture & Rural Development, Federal Ministry of Commerce, National Bureau of Statistics and the Central Bank of Nigeria. This exercise was carried out in eighteen weak states (i.e. three states per zone) which lasted for three days.
Three levels of training were conducted before the fieldwork. Training of the Trainers (TOT) was conducted for the members of the Technical Sub-committee at CBN Headquarters, Abuja for one day. Out of 24 officers trained at the first level training, 12 trainers were chosen to handle the second level training in the six geo-political zones of the Federation. During the second level training, 117 participants comprising Zonal Controllers, State Officers and Field Officers of the National Bureau of Statistics were trained for one day. The third level training took place in each of the 36 State capitals and FCT where a total of five hundred and fifty five (555) enumerators and one hundred and eighty five (185) supervisors of the National Bureau of statistics were trained for one day.
Data Collection Strategy
The NBS permanent field staff carried out the data collection during the survey year. Each household head or a responsible adult in the household gave information about the household visited.
The field staff included enumerators and supervisors while the field coordinators comprised the State Officers and Zonal ontrollers. Each State Officer coordinated all field operations, while the Zonal Controllers supervised the States in their respective zones.
Data processing
The completed questionnaires were collated and edited manually before data entry operation was carried out by the NBS staff in the six designated NBS zonal headquarters. Machine data editing, table generation and analysis were carried out by NBS staff at NBS headquarters, Abuja, followed by report writing by the Consultative Committee on Agricultural Export Commodity Statistics (CCAECS).
Data appraisal
No sampling error estimate
Distributor information
| Organization name | Affiliation |
|---|---|
| Central Bank of Nigeria | FEDRAL GOVERNMENT OF NIGERIA |
| Federal Ministry of Agriculture and Rural Development | FEDRAL GOVERNMENT OF NIGERIA |
| Federal Ministry of Commerce | FEDRAL GOVERNMENT OF NIGERIA |
Data Access
| Name | Affiliation | URL | |
|---|---|---|---|
| National Bureau of Statistics (NBS) | Federal Government of Nigeria (FGN) | http://www.nigerianstat.gov.ng | feedback@nigerianstat.gov.ng |
| Is signing of a confidentiality declaration required? | Confidentiality declaration text |
|---|---|
| yes | The confidentiality of the individual respondent is protected by law (Statistical Act 2007). This is published in the Official Gazette of the Federal republic of Nigeria No. 60 vol. 94 of 11th June 2007. See section 26 para.2. Punitive measures for breeches of confidentiality are outlined in section 28 of the same Act. |
A comprehensive data access policy is been developed by NBS, however section 27 of the Statistical Act 2007 outlines the data access obligation of data producers which includes the realease of properly anonymized micro data.
"National Bureau of Statistics, National Survey of Agricultural Export Commodities 2007 (AGREXP 2007). v01, provided by the National Data Archive. http://www.nigerianstat.gov.ng/nada/index.php"
Disclaimer and copyrights
The user of the data acknowledges that the original collector of the data, the authorized distributor of the data, and the relevant funding agency bear no responsibility for use of the data or for interpretations or inferences based upon such uses.
Contacts
| Name | Affiliation | URL | |
|---|---|---|---|
| National Bureau of Statistics (NBS) | Fedral Government of Nigeria (FGN) | feedback@nigerianstat.gov.ng | http://www.nigerianstat.gov.ng |
Metadata production
DDI_NGA_2007_NSAEC_v01_M
| Name | Affiliation | Role |
|---|---|---|
| National Bureau of Statistics | Federal Government of Nigeria (FGN) | Metadata Producer |
| Accelerated Data Program | International Household Survey Network | Review of the metadata |
2009-03-04
Metadata version
Version 02 (October 2013). Edited version based on Version 01 (March 2009) DDI that was done by Nigeria National Bureau of Statistics and reviewed by Accelerated Data Program, International Household Survey Network.