Palay and Corn Stocks Survey 2019
Philippines, 2019
Reference ID
PHL-PSA-PCSS-2019-v1.0
Producer(s)
Philippine Statistics Authority
Metadata
Created on
Jun 14, 2022
Last modified
Jun 14, 2022
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26775
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Identification
Palay and Corn Stocks Survey 2019
Name | Abbreviation |
---|---|
Philippines | PHL |
PHL-PSA-PCSS-2019-v1.0
The country’s rice and corn stocks inventory are generated from three sectors, namely: household, commercial, and government rice stocks of National Food Authority (NFA). The household stocks are taken from the Palay and Corn Stocks Survey (PCSS) of the PSA, which covers farming and non-farming households nationwide. On the other hand, the commercial stocks are sourced from registered grains businessmen through the Commercial Stocks Survey (CSS), conducted by the NFA. Meanwhile, the government rice stocks are monitored from NFA warehouses/depositories. The PSA consolidates the stocks inventories from the three sectors which is disseminated monthly through a special release on Rice and Corn Stocks Inventory which is made available in the PSA website every 10th day of the month after the reference period.
The objective of the survey is to generate estimates on current stocks of rice and corn in farming and non-farming households.
The objective of the survey is to generate estimates on current stocks of rice and corn in farming and non-farming households.
Sample survey data [ssd]
The survey has farming and non-farming households as units of analysis.
Version
V1.0: Division edits for preliminary estimates computation (raw, first output)
2022-01-06
Scope
Topic | Vocabulary | URI |
---|---|---|
Agriculture, forestry, fisheries | Philippine Statistics Authority |
Coverage
The survey covers all provinces except Batanes, cities of Zamboanga and Davao, and National Capital Region. National
Barangay
The survey has farming and non-farming households as units of analysis.
Farming and non-farming households
Producers and sponsors
Name | Abbreviation | Role |
---|---|---|
Government of the Philippines | GOP | Full funding |
Name | Affiliation | Role | |
---|---|---|---|
Sampling
The PCSS covers sample farming households and non-farming households nationwide. Sample farming households are sub-sample of Palay Production Survey (PPS) and Corn Production Survey (CPS). In these surveys, the primary sampling units (PSUs) are the palay/corn producing barangays and secondary sampling units (SSUs) are the palay/corn farming households. The PSUs are selected using probability proportional to size while the SSUs are selected through systematic sampling. For the non-farming households, five non-farming households are selected for each barangay.
The expansion factor of the PCSS is based on the number of farming and non-farming households from the 1991 Census on Agriculture and Fishery (CAF) which is updated in July every year using the projected midyear population estimate.
Data Collection
Start | End | Cycle |
---|---|---|
2019-01-01 | 2019-01-04 | January |
2019-02-01 | 2019-02-04 | February |
2019-03-01 | 2019-03-04 | March |
2019-04-01 | 2019-04-04 | April |
2019-05-01 | 2019-05-04 | May |
2019-06-01 | 2019-06-04 | June |
2019-07-01 | 2019-07-04 | July |
2019-08-01 | 2019-08-04 | August |
2019-09-01 | 2019-09-04 | September |
2019-10-01 | 2019-10-04 | October |
2019-11-01 | 2019-11-04 | November |
2019-12-01 | 2019-12-04 | December |
Start | End | Cycle |
---|---|---|
2019-01-01 | 2019-01-01 | January |
2019-02-01 | 2019-02-01 | February |
2019-03-01 | 2019-03-01 | March |
2019-04-01 | 2019-04-01 | April |
2019-05-01 | 2019-05-01 | May |
2019-06-01 | 2019-06-01 | June |
2019-07-01 | 2019-07-01 | July |
2019-08-01 | 2019-08-01 | August |
2019-09-01 | 2019-09-01 | September |
2019-10-01 | 2019-10-01 | October |
2019-11-01 | 2019-11-01 | November |
2019-12-01 | 2019-12-01 | December |
Face-to-face [f2f]
Field supervision is undertaken by the Provincial Office (PO) staff in their respective municipalities assignments. The Provincial Statistics Officer (PSO) serves as overall supervisor in the province, while the Regional Director (RD) is the overall supervisor in the region. Central Office technical staff also make field visits in selected provinces to observe field opeations.
Among the responsibilities of the supervisors are to conduct briefing of SRs prior to data collection, make spotchecking and backchecking activities during and after the data collection, edit accomplished returns, address problems encountered by the SRs under his/her supervision and report to Central Office the significant findings that may contribute to the analysis of tthe survey results.
Duties and responsiblities of the supervisors are described in the Manual of Operations for Supervisors.
Among the responsibilities of the supervisors are to conduct briefing of SRs prior to data collection, make spotchecking and backchecking activities during and after the data collection, edit accomplished returns, address problems encountered by the SRs under his/her supervision and report to Central Office the significant findings that may contribute to the analysis of tthe survey results.
Duties and responsiblities of the supervisors are described in the Manual of Operations for Supervisors.
The survey uses a structured questionnaire referred to as PCSS Form 1. The questionnaire has two major parts- quantity of palay/rice stocks and corn grain/corn grits owned by the household as of 6:00 AM of the 1st day of the month.
Name | Abbreviation | Affiliation |
---|---|---|
Philippine Statistics Authority | PSA | National Economic and Development Authority |
Data Processing
Data editing is done in two stages, namely: manual and computerized editing. The completed survey returns are manually edited prior to data encoding. Manual editing involves the checking of data items based on the pre-set criteria, data ranges, completeness and consistency with other data items in the questionnaire. Thereafter, coding of alpha-numeric codes for questionnaire items are performed to facilitate data entry.
Data are processed in the PCSS data processing system developed using the Census Survey Processsing System (CSPro). The data processing is decentralized at the Provincial Offices which include encoding of the data from the edited survey returns, computerized editing, completeness check and generation of output tables.
In validation process, the encoded data are subjected to computerized editing using the customized editing program. The editing program takes into consideration the validation criteria such as validity, completeness and consistency with other data items. These activities are done to capture invalid entries that were overlooked during manual editing.
An error listing will be produced as output of the process. The errors reflected in the error list are verified vis-a-vis rhe questionnaires. The data files are then updated based on the corrections made. Editing and updating are performed iteratively until a clean, error-free data file is generated.
Completeness check is done to compare the data file against the list of samples to check if the samples have been completely surveyed. This activity is done after clean, error-free data file is generated .
Data are processed in the PCSS data processing system developed using the Census Survey Processsing System (CSPro). The data processing is decentralized at the Provincial Offices which include encoding of the data from the edited survey returns, computerized editing, completeness check and generation of output tables.
In validation process, the encoded data are subjected to computerized editing using the customized editing program. The editing program takes into consideration the validation criteria such as validity, completeness and consistency with other data items. These activities are done to capture invalid entries that were overlooked during manual editing.
An error listing will be produced as output of the process. The errors reflected in the error list are verified vis-a-vis rhe questionnaires. The data files are then updated based on the corrections made. Editing and updating are performed iteratively until a clean, error-free data file is generated.
Completeness check is done to compare the data file against the list of samples to check if the samples have been completely surveyed. This activity is done after clean, error-free data file is generated .
Data Appraisal
Review is being done based on time series data and is further validated with concerned RDs and PSOs.
Data access
Name | Affiliation | URI | |
---|---|---|---|
National Statistician | Philippine Statistics Authority | info@psa.gov.ph | www.psa.gov.ph |
contacts
Name | Affiliation | URI | |
---|---|---|---|
Crops Statistics Division | Philippine Statistics Authority | csd.staff@psa.gov.ph | http://psa.gov.ph |
Knowledge Management and Communications Division | Philippine Statistics Authority | kmcd.staff@psa.gov.ph | http://psa.gov.ph |