copyright 2010, the world bank group. all rights reserved. sources of agricultural data section a 1
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Sources of Agricultural Data
Section A
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Sources of Agricultural Data
• Administrative Data
• Household Surveys
• Establishment Surveys
• Censuses
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Statistical Environment
• Countries need statistical coordinating authorities
• Data demands, funding and statistical activities must be balanced between all involved agencies at the national level
• The goal is efficient use of available resources to meet national needs
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Statistical Coordination Issues
• National statistical strategies and legislation to define roles of organizations
• Foster public support for funding
• Provide common framework
• Reach national consensus on data needs
• Define current capabilities and determine funding requirements
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Statistical Capacity Building
• Methodological and technological developments allow for more efficient use of limited resources
• Statistical staff should participate in regional and international workshops and meetings to keep abreast of developments
• Methods of continual staff training should be implemented to improve staff capability and retention
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Coordinating Censuses
• Reduces costs and add value to largest data collection operations
• Forces standardization of concepts and definitions for greater comparability
• Requires use of common frames
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Harmonizing Population and Agriculture Censuses
• Primary sampling unit relationship
– Household and agricultural holding
• Common definitions and classifications
• Utilize same EAs, maps, and other field materials
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Pre-Census Agricultural Data
• Mapping exercise can administer community questionnaires
• Household listing can include information on agricultural activities of household
• Considerations include:– Additional resources– Seasonality– Data capture and processing
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Household Frame for Agriculture Census
• Use household list from population census
– Allows linking of data between censuses
• Ask screening questions to determine household agriculture activity
• Enumerate all households within scope of the agriculture census
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Agriculture data in the Population Census
• Main occupation and industry
– Use latest ISIC and ISCO lists
• Status in employment
– Combining information can help to identify likely agricultural households
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Collecting Additional Agricultural Data
• Benefits:
– Provides agricultural data for analysis
– More precise agricultural census frame
– Household level frame data for agricultural census fieldwork planning
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Household Question Example
• Was this household engaged in any agricultural activity? Yes or No (skip to next question)
– Did the household grow crops? Yes or No
– Did the household have livestock? Yes or No
– Area of land under cultivation?
• Was this household engaged in aquaculture? Yes or No
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Linking Agriculture and Population Census Data
• Linking census data sets means that questions don’t have to be repeated:
– Sex and Age of agricultural holder
– Household size• Matching households is difficult and must be
planned for well in advance.
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Potential Problems of Combining Censuses
• Different ministries are responsible for each census
• Seasonality and legal requirements
• Can cause poor data quality in both censuses due to confusion and respondent burden
• Thorough testing is required before adoption
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Economic and Agricultural Census
• Agricultural census is part of economic statistics system
• Agriculture is often measured by a special census
• Economic census covers other industry establishments
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Combined Agriculture and Economic Census
• Complete business register, including agricultural establishments
• Only covers non-household agriculture holdings
• Include core and supplemental agriculture modules in economic census
• Can link data between censuses
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Combination with Aquaculture Census
• Normally a few aquaculture questions are asked in the agriculture census
– Misses aquaculture only holdings
– Doesn’t provide sufficient information
• Need to either conduct separate aquaculture census or add more developed aquaculture module to agriculture census
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Census of Agriculture and Aquaculture
• ISIC classifications should be used to define units of enumeration for comparability
• Core questions are similar for aquaculture and agriculture
• Additional core question on area of aquaculture by type of site is required
• More detailed aquaculture module administered to households within scope
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Frame for Census of Agriculture and Aquaculture
• Frame of household holdings from population census – Housing section question to identify
households engaged in own-account activities• Non-household holdings from business
register
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Required Modifications
Expand definitions for:• Agricultural holding and holder
• Main purpose of production
• Area of holding and Land use
• Irrigation and water management
• Agricultural practices, services and farm labor
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Section A Quiz
1. What are the three main censuses usually conducted by a country?
2. When could information on agricultural holdings be collected in a population census?
3. What considerations are universal to all integrated data collection activities?