National Survey of Agricultural Export Commodities 2003
First Round
Nigeria, 2003 - 2005
Identification
NGA-NBS-AGREXP-2003-v1.0
National Survey of Agricultural Export Commodities 2003
First Round
AGREXP-2003
No translation
| Name | Country code |
|---|---|
| Nigeria | NGA |
Agricultural Survey [ag/oth]
The National Survey of Agricultural Export Commodities is a joint project of four federal agencies namely: National Bureau of Statistics (NBS), Central Bank of Nigeria (CBN), Federal Ministry of Agriculture and Rural Development (FMA&RD) and Federal Ministry of Commerce (FMC).
Funding for the project was initially to be undertaken by the four collaborating agencies in the following proportions: CBN 50%, FMA&RD 20%, FMC 20%, and NBS 10%. After consideration of the financial limitations of the other three agencies, the Federal Executive Council directed the CBN to fund the project until such a time when other collaborating agencies would be financially strong enough to contribute their own quotas.
The project took off with the pilot survey of 2002, the publication of which was released in September 2006.
Agricultural Export Commodity is defined as an exportable crop grown in Nigeria and is curently or has a currently or has a great potential of generating foreign exchange for the nation. The crops under consideration are rubber , coffee, cocoa, sesame seed, garlic, tea, ginger, gum arabic, cashew nut, oil palm, groundnut, cotton, sugarcane and sheanut
Nigeria is earning some foreign exhange from the fourteen export crops covered in the survey
The objective of the survey is to provide a national baseline data on agricultural comodities. Further more, the annual survey, among others will help to:-
1. Provide structural data on agricultural export commodities in Nigeria
2. Obtain socio-economic data and demographic characteristics of holders within households; and
3. Provide production estimates at national and state levels.Sample survey data [ssd]
Household
Version
Version 1.0
2009-02-27
General Review of the Metadata
Scope
Area of Focus for data collection were on:
- Household characteristics
- Area of production
- Employment characteristics
- Farming implements
- Agronomic practices
| Topic | Vocabulary | URI |
|---|---|---|
| rural economics [1.6] | CESSDA | http://www.nesstar.org/rdf/common |
| agricultural, forestry and rural industry [2.1] | CESSDA | http://www.nesstar.org/rdf/common |
| employment [3.1] | CESSDA | http://www.nesstar.org/rdf/common |
| basic skills education [6.1] | CESSDA | http://www.nesstar.org/rdf/common |
| gender and gender roles [12.6] | CESSDA | http://www.nesstar.org/rdf/common |
Coverage
National State Sector (Urban/Rural)
Household export crop farmers Modern Agricultural export crop Holders
Producers and sponsors
| Name | Affiliation |
|---|---|
| National Bureau of Statitics (NBS) | Federal Government of Nigeria (FGN) |
| Name | Affiliation | Role |
|---|---|---|
| Central Bank of Nigeria | Federal Government of Nigeria (FGN) | Collaboration |
| Federal Ministry of Agriculture and Rural Development | Federal Government of Nigeria (FGN) | Collaboration |
| Federal Ministry of Commerce | Federal Government of Nigeria (FGN) | Collaboration |
| Name | Abbreviation | Role |
|---|---|---|
| National Bureau of Statitics | NBS | Technical Support |
| Central Bank of Nigeria | CBN | Funding |
| Name | Affiliation | Role |
|---|---|---|
| Ministries, Depaartments & Agencies | MDAs | Technical Support |
Sampling
The design employed a two-phase and a two-stage sample selection procedure
Phase 1, stage 1: The comprised listing exercise and administering of holding questionnaires. A total of 192 Local Government Areas (LGAs) were selected throughout the Federation and ten (10) Enumeration Areas (EAs) were selected in each LGA, totalling 1,920 EAs throughout the country including the Federal Capital Territory. Most of these LGAs were selected based on the information that they were producing one or more of the selected export crops. Not less than three LGAs were selected from each State of the Federation and FCT.
Phase 1, stage 2: In this stage, ten (10) export crop farming housing units were selected in each EA using systematic selection approach and all the households in each export crop farming housing unit were covered in the administration of holding questionnaires.
Phase 2, stage 1: This phase dealt with the crop cutting exercise which comprised farm survey, laying of yeild plot and harvesting. All the ten export crop farming EAs in the LGAs covered in the first phase were selected for crop cutting exercise.
No Deviation
On a national basis the 2003 survey achieved a response rate of about 74.86% at Housing Unit 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 1,920EAs canvassed throughout the 36 states of the Federation and FCT, Abuja. 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))
The above value was obtained for each of the 1,920 EAs canvassed throughout the 36 states of the Federation and FCT, Abuja.
The weight (Rf) was calculated and attached to the data
NOTE:
Adjustment was made to the weight depending on the reponse at household level
Survey instrument
FEDERAL REPUBLIC OF NIGERIA
NATIONAL SURVEY ON AGRICULTURAL EXPORT COMMODITIES CONDUCTED BY CENTRAL BANK OF NIGERIA IN COLLABORATION WITH
THE FEDERAL OFFICE OF STATISTICS,FEDERAL MINISTRY OF AGRICULTURE AND RURAL DEVELOPMENT AND FEDERAL MINISTRY OF COMMERCE
HOLDING QUESTIONNAIRE
SECTION I: HOLDING IDENTIFICATION
SECTION II: ACESS TO LAND
SECTION III: SOURCE OF FUNDS
SECTION IV: EXPORT CROP FARMING
SECTION VII: MARKET CHANNEL
SECTION VIII: QUANTITY SOLD
SECTION X: QUANTITY CONSUMED
SECTION XI: USE OF FERTILIZER
SECTION XII:
SECTION XIII: USE OF IMPROVED SEEDLING/SEED
(a) The data entry was done manually
(b) The data entry was done in lagos at (csd) cencus and surey division
(c) Six operator plus two suppervissor and two progammer were used
(d) Six machines were used for data entry
(e) The data entry staff used 20 days to do the entries
(f) The supervisor use 5 days to checked the entries
(g) progarm was written to convert the data to spss also provided as external resource
Data collection
| Start | End | Cycle |
|---|---|---|
| 2003-08-05 | 2005-08-15 | 10 days |
2004/2005
| Start date | End date | Cycle |
|---|---|---|
| 2003-08-05 | 2005-08-15 | 10 days |
- Face-to-face [f2f]
| Name | Affiliation | Abbreviation |
|---|---|---|
| Field services and methodology department, | National Bureau of Statistics (NBS) | FSM |
Field services and methodology department,
DATA COLLECTION STRATEGY
The FOS permanent field staff residing in the Enumeration Areas carried out the data collection during the survey. In the household component of the survey, each household head or a responsible adult in the household gave information
about his household in general. The field staff consisted of Enumerators, Interviewers and Supervisors while the
field coordination team comprised the State Officers and Zonal Controllers. Each State Officer coordinated all field operations while each Zonal ContRoller supervised and coordinated the States in his zone.
TRAINING
Three levels of training were conducted for the survey. Training of the Trainers (TOT) was conducted for the members of the Technical Sub-committee. Twenty trainersttrainees who were trained at the first level training later handled the second level training held in the six geo-political zones of the country. During the second level training, 117 participants comprising Zonal Controllers, State Officers and field officers of the Federal Office of Statistics were trained. The third level training took place in each of the 36 States' capital and FCT where a total of 1,067 Enumerators and Supervisors of the Federal Office of Statistics were trained.
FIELD ORGANISATION
Listing exercise commenced on Monday, 251h November, 2002 and lasted two weeks. Thereafter, ten export farming housing units (EFHUs) were selected for coverage. The Enumerators and field officers of the Federal Office of Statistics administered the copies of the holding questionnaire to all qualified agricultural export commodity farmers in each of the selected Enumeration Areas in all the States of the Federation and the Federal Capital Territory, from 27'h January 71h February, 2003. Through this exercise, relevant information on production, processing, marketing and credit were obtained from the farmers. The crop cutting exercise covered three broad activities namely: the survey of farm plots, laying of yield plots, and harvesting of crops on designated plots. This
Data processing
The completed questionnaires were collated and edited manually
(a) Office editing and coding were done by the editor using visul contro of the questionnaire before data entry
(b) Imps was used to design the data entry template provided as external resource
(c) six operator plus two suppervissor and two progammer were used
(d) six machines were used for data entry
(e) After data entry data entry supervisor runs fequency on each section to see that all the questionnaire were enterd
(f) Conversion progarm was written to convert the data to spss also provided as external resource
Data appraisal
No sampling error estimate
In order to ensure high quality data, two phased quality check exercises were put in place. During the first exercise, the officers skim-checked ten listing forms and ten selected holding questionnaires in the selected EAs in each State and FCT.
The second phased was spot-checked ten listing forms and ten selected holding 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.
Distributor information
| Organization name | Abbreviation | Affiliation |
|---|---|---|
| Central Bank of Nigeria | CBN | FEDRAL GOVERNMENT OF NIGERIA |
| Federal Ministry of Agriculture and Rural Development | FMA&RD | FEDRAL GOVERNMENT OF NIGERIA |
| Federal Ministry of Commerce | FMC | 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 2007outlines the data access obligation of data producers which includes the realease of properly anonymized micro data.
National Bureau of Statistics, Nigeria, National Survey of Agricultural Export Commodities 2003-v1.0
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.
(c) NBS 2007
Contacts
| Name | Affiliation | URL | |
|---|---|---|---|
| Dr V.O. Akinyosoye | Director General | voakinyosoye@nigerianstat.gov.ng | http://www.nigerianstat.gov.ng |
| DR G.O. Adewoye | Director Census & Surveys | georgeadewoye@yahoo.com | http://www.nigerianstat.gov.ng |
| Mrs A.N. Adewimbi | Head of Information and Comnucation Technology Department | anadewimbi@yahoo.com | http://www.nigerianstat.gov.ng |
| Biyi Fafunmi | Data Access | biyifafunmi@nigerianstat.gov.ng | http://www.nigerianstat.gov.ng |
| Mrs A. A. Akinsanya | Data Archivist | paakinsanya@nigerianstat.gov.ng | http://www.nigerianstat.gov.ng |
| Mr R.F. Busari | ICT | rfbusari@nigerianstat.gov.ng | http://www.nigerianstat.gov.ng |
| National Bureau of Statistics (NBS) | Fedral Government of Nigeria (FGN) | feedback@nigerianstat.gov.ng | http://www.nigerianstat.gov.ng |
Metadata production
DDI-NGA-NBS-AGREXP-2003-v1.0
| Name | Abbreviation | Affiliation | Role |
|---|---|---|---|
| National Bureau of Statitics | NBS | Federal Government of Nigeria (FGN) | Metadata Producer |
2009-02-27
Metadata version
Version 1.0