Namibia Census of Agriculture 2013/2014 - Communal Sector
Namibia, 2014
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Reference ID
NAM_2013-2014_NCA_v01_EN_M_v01_A_OCS
Producer(s)
Namibia Statistics Agency, Ministry of Agriculture, Water and Forestry
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Metadata
Created on
Sep 12, 2019
Last modified
Oct 31, 2019
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Identification
Survey ID Number
NAM_2013-2014_NCA_v01_EN_M_v01_A_OCS
Title
Namibia Census of Agriculture 2013/2014 - Communal Sector
Country
| Name | Country code |
|---|---|
| Namibia | NAM |
Study type
Agricultural Census [ag/census]
Abstract
The Namibia Census of Agriculture (NCA) 2013/14 covered the communal and commercial farming sectors throughout the country. The objective of the NCA 2013/14 is to obtain baseline agricultural production and structural variables for the communal and commercial farming sectors at the national and regional levels. The census will provide statistics to improve planning and decision-making in the agricultural sector and satisfy the information needs of the socio-economic database being set up by the Namibia Statistics Agency (NSA).
Kind of Data
Sample survey data [ssd]
Unit of Analysis
Agricultural holdings
Scope
Notes
1. Introduction
2. Agricultural Households demographic characteristics
3. Land use
4. Access to extension services and facilities
5. Equipment and Infrastructure
6. Access to credit facilities
7. Farm Management
8. Aquaculture/Fish farming
9. Forestry
10. Food security
11. Other economic activity
12. Labour inputs
13. Usage and disposition of crops
14. Livestock
2. Agricultural Households demographic characteristics
3. Land use
4. Access to extension services and facilities
5. Equipment and Infrastructure
6. Access to credit facilities
7. Farm Management
8. Aquaculture/Fish farming
9. Forestry
10. Food security
11. Other economic activity
12. Labour inputs
13. Usage and disposition of crops
14. Livestock
Keywords
| Keyword |
|---|
| Agricultural inputs |
| Livestock |
| Crop production |
| Land use |
| Harvest |
| Labour |
| Crop yield |
| Irrigation |
| Storage facilities |
| Economic activity |
| Apiary |
| Aquaculture |
| Forestry |
| Crop |
| Seed |
| Holding |
| Household |
| Farming |
| Fertilizers |
| Field |
| Parcel |
| Plot |
| Agriculture |
| Census |
| Holder |
Coverage
Geographic Coverage
National Coverage
Universe
All the agricultural households members regardless of age who reside in the holding on the day of enumeration.
Producers and sponsors
Primary investigators
| Name | Affiliation |
|---|---|
| Namibia Statistics Agency | Ministry of Economic Planning |
| Ministry of Agriculture, Water and Forestry |
Producers
| Name | Role |
|---|---|
| Food and Agriculture Organization | Technical Support |
Funding Agency/Sponsor
| Name | Abbreviation | Role |
|---|---|---|
| The Government of the Republic of Namibia | GRN | Funding |
| Food and Agriculture Organization of the United Nations | FAO | Funding |
| African Development Bank | AfDB | Funding |
Sampling
Sampling Procedure
A total sample size of 10,550 agricultural households was determined to give reasonably reliable estimates at the regional level for the most important variables. The proportional allocation of this sample did not yield the minimum sample size for some of the sparsely populated regions. Hence, a power allocation with some adjustments had to be carried out as a compromise procedure while keeping the overall national sample fixed.
In general,10 agricultural households were sampled from each of the selected PSUs thus having a larger spread of the sample across the population of agricultural households. However, in some of the southern regions having less communal farming activities, the sample size per PSU was raised to 16 agricultural households.
A stratified two stage cluster sample design for the communal sector was used. At the first stage, primary sampling units (PSUs) were selected with Probability Proportional to Size (PPS) from the sampling frame based on the Enumeration Areas of 2011 Population and Housing Census. The size measure of a PSU in the sampling frame was the number of agricultural households which was derived from the questions included in the 2011 Population and Housing Census as per the World Programme of Agriculture 2010 (WCA 2010) Handbook recommendations.
The main strata was the regions which are also the primary domains of estimation. The frame units (PSUs) were further stratified implicitly by the constituencies within the regions. The list of agricultural households prepared within a selected PSU formed the secondary sampling frame from which a sample of agricultural households was selected systematically.
A third stage of sampling was introduced to measure objectively the average yields of the three major crops namely; Maize, Sorghum and Millet for the purpose of estimating the production instead of the farmer's estimates. Hence a crop cutting experiment was conducted to measure the average yield of these crops. A list of plots under each of these crops in a sampled PSU was made using the plot information of the selected households within the PSU. These lists then formed the sampling frames for each of the crops in the PSU.
Three plots were then randomly selected from each of the crop lists. If the list contained less than 3 plots then all were included in the experiment. An area was marked within the selected plot according to the FAO guidelines. Matured crops inside this marked area were cut and the weights from wet as well as dry grains were recorded. Grains were weighted while wet as well as dry. These figures were then used to estimate the average yield of each of the crops.
In general,10 agricultural households were sampled from each of the selected PSUs thus having a larger spread of the sample across the population of agricultural households. However, in some of the southern regions having less communal farming activities, the sample size per PSU was raised to 16 agricultural households.
A stratified two stage cluster sample design for the communal sector was used. At the first stage, primary sampling units (PSUs) were selected with Probability Proportional to Size (PPS) from the sampling frame based on the Enumeration Areas of 2011 Population and Housing Census. The size measure of a PSU in the sampling frame was the number of agricultural households which was derived from the questions included in the 2011 Population and Housing Census as per the World Programme of Agriculture 2010 (WCA 2010) Handbook recommendations.
The main strata was the regions which are also the primary domains of estimation. The frame units (PSUs) were further stratified implicitly by the constituencies within the regions. The list of agricultural households prepared within a selected PSU formed the secondary sampling frame from which a sample of agricultural households was selected systematically.
A third stage of sampling was introduced to measure objectively the average yields of the three major crops namely; Maize, Sorghum and Millet for the purpose of estimating the production instead of the farmer's estimates. Hence a crop cutting experiment was conducted to measure the average yield of these crops. A list of plots under each of these crops in a sampled PSU was made using the plot information of the selected households within the PSU. These lists then formed the sampling frames for each of the crops in the PSU.
Three plots were then randomly selected from each of the crop lists. If the list contained less than 3 plots then all were included in the experiment. An area was marked within the selected plot according to the FAO guidelines. Matured crops inside this marked area were cut and the weights from wet as well as dry grains were recorded. Grains were weighted while wet as well as dry. These figures were then used to estimate the average yield of each of the crops.
Response Rate
Response rates were computed for each region and the overall response was 95.9 percent.
Weighting
Since the PPS selection is and unequal probability selection the sample data has to be weighted. These weights which are generally called sample weights or base weights are the inverse of the inclusion probability.
Although the expected sample agricultural households was the responding households would be less than this number. Since the non-response was not too large and the reasons seem to suggest that there are no remarkable differences between the responding and non responding households, the responding households ( were taken as a random sample of the selected households. This will affect the probabilities and accordingly the weight and therefore the non response adjusted weight is
Although the expected sample agricultural households was the responding households would be less than this number. Since the non-response was not too large and the reasons seem to suggest that there are no remarkable differences between the responding and non responding households, the responding households ( were taken as a random sample of the selected households. This will affect the probabilities and accordingly the weight and therefore the non response adjusted weight is
Data Collection
Dates of Data Collection
| Start | End | Cycle |
|---|---|---|
| 2014-02-02 | 2014-07-17 | 6 months |
Data Collection Mode
Computer Assisted Personal Interview [capi]
Data Processing
Data Editing
Data editing took place at a number of stages throughout the processing, including:
1. Office editing and coding
2. Data editing and data cleaning using Stata 13 and CSPro 5.0
These phases were carried out over a period of 18 months. Out of this period, the designing of tabulation programs, and the generation, verification and correction of tables lasted for 10 months.
1. Office editing and coding
2. Data editing and data cleaning using Stata 13 and CSPro 5.0
These phases were carried out over a period of 18 months. Out of this period, the designing of tabulation programs, and the generation, verification and correction of tables lasted for 10 months.
Access policy
Contacts
| Name | Affiliation | URL | |
|---|---|---|---|
| Namibia Statistics Agency | Ministry of Economic Planning | [email protected] | www.nsa.org.na www.nsa.org.na www.nsa.org.na www.nsa.org.na |
Confidentiality
No attempt will be made to re-identify respondents, and no use will be made of the identity of any person or establishment discovered inadvertently. Any such discovery would immediately be reported to the Namibia Statistics Agency.
Access conditions
The datasets has been anonymized and is available as a Public Use Dataset, accessible to all. It is accessible to all for statistical and research purposes only, under the following terms and conditions:
1. The data and other materials will not be redistributed or sold to other individuals, institutions, or organizations without the written agreement of the Namibia Statistics Agency.
2. The data will be used for statistical and scientific research purposes only. It will be used solely for reporting of aggregated information, and not for investigation of specific individuals or organizations.
3. No attempt will be made to re-identify respondents, and no use will be made of the identity of any person or establishment discovered inadvertently. Any such discovery would immediately be reported to the Namibia Statistics Agency.
4. Any books, articles, conference papers, theses, dissertations, reports, or other publications that employ data obtained from the Namibia Statistics Agency will cite the source of data in accordance with the Citation Requirement provided with each dataset.
1. The data and other materials will not be redistributed or sold to other individuals, institutions, or organizations without the written agreement of the Namibia Statistics Agency.
2. The data will be used for statistical and scientific research purposes only. It will be used solely for reporting of aggregated information, and not for investigation of specific individuals or organizations.
3. No attempt will be made to re-identify respondents, and no use will be made of the identity of any person or establishment discovered inadvertently. Any such discovery would immediately be reported to the Namibia Statistics Agency.
4. Any books, articles, conference papers, theses, dissertations, reports, or other publications that employ data obtained from the Namibia Statistics Agency will cite the source of data in accordance with the Citation Requirement provided with each dataset.
Citation requirements
Namibia Statistics Agency (2015). Namibia Census of Agriculture 2013/2014 /Communal Sector Report, Version 1.0 of the public use dataset (November 2015), Windhoek, Republic of Namibia.
Website: www.nsa.org.na
Website: www.nsa.org.na
Disclaimer and copyrights
Disclaimer
The Namibia Statistics Agency bears no responsibility for use of the data or for interpretations or inferences based upon public uses.
Metadata production
DDI Document ID
DDI_NAM_2013-2014_NCA_v01_EN_M_v01_A_OCS_FAO
Producers
| Name | Abbreviation | Affiliation | Role |
|---|---|---|---|
| Office of the Chief Statistician | OCS | Food and Agriculture Organization | Metadata adapted for FAM |
| Namibia Statistics Agency | NSA | Ministry of Economic Planning | Metadata producer |
DDI Document version
NAM_2013-2014_NCA_v01_EN_M_v01_A_OCS_v01