Survey on Costs and Returns of Cassava Production 2014
Philippines, 2014
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PHL_2014_CRS-CASSAVA_v01_M
Survey on Costs and Returns of Cassava Production 2014
| Name | Country code |
|---|---|
| Philippines | PHL |
Agricultural Survey [ag/oth]
The 2014 Survey on Costs and Returns of Cassava Production is the second of the series. The first one was conducted in 1998 by then Bureau of Agricultural Statistics.
The survey aimed to generate updated data on levels and structure of production costs and returns. It was conducted to detemine the indicators of profitability such as gross and net returns, returns above cash costs, net profit - cost ratio, etc.; usage of materials and labor inputs; and other related socio-economic variables including information on new production technologies.
Sample survey data [ssd]
Sample farmers who harvested cassava within the reference period and knowledgeable on the details of cassava farming particularly on investments, material inputs, labor expenses incurred and disposition of produce were the units of analysis of the survey.
Version
V.3: Public Use File
2014-10
Scope
The scope of the survey includes:
- basic characteristics of the farm
- farm investments
- material, labor inputs
- production and disposition
- marketing, access to credit
- farmer's participation in camote programs and projects
- plans, recommendations
| Topic | Vocabulary |
|---|---|
| Agriculture, forestry, fisheries | Philippine Statistics Authority |
| Business and agricultural surveys | Philippine Statistics Authority |
Coverage
The survey covered six cassava producing provinces: Camarines Sur, Bohol, Bukidnon, Basilan, Lanao Del Sur and Sulu.
The survey covered farmers who harvested cassava within the reference period and knowledgeable on the details of cassava farming particularly on investments, material inputs, labor expenses incurred and disposition of produce. The reference period was the production for the last completed harvest within April 2013 to March 2014.
Producers and sponsors
| Name | Affiliation |
|---|---|
| Philippine Statistics Authority | National Economic and Development Authority |
| Name | Role |
|---|---|
| Department of Agriculture | Survey operations |
| Philippine Statistics Authority | All other expenses |
Sampling
A two-stage sampling design was employed with the barangay as the primary sampling unit and the sample farmer as the secondary sampling unit.
Top 15 cassava producing barangays in the province served as sample barangays for the survey. These were identified by the Provincial Operations Center (POCs) using the available information on cassava production. The ranking is based on the barangay's total area harvested for cassava during 2013. During data collection, snowball approach will be applied to identify the sample farmers.
The total number of sample farmers per province was set at 75 equally allocated to each sample barangays i.e., five sample farmers for each sample barangay. During data collection, sample farmers will be located using snowball sampling. The names and addresses of cassava farmers residing in the barangay will be obtained from the office of the barangay captain or any other Key Informants (KIs) in the barangay. This will serve as the data collector's starting point in searching for potential sample farmers.
A set of screening questions will be applied to confirm if those listed actually harvested cassava during the reference period and meet the other criteria for enumeration.
Whether the interviewed farmer is qualified or not, he/she will be asked to identify other cassava farmers in the barangay to be added in the initial list. The search continues, and the farmer who meets the criteria specified in the screening questions qualifies as sample for the survey and will be interviewed using the 2014 CRS for Cassava Production questionnaire. If the interview is successfully carried out (meaning, all the needed information have been supplied), the enumerator will write the household number, full name and residential address of the sample farmer in the List of Sample Farmers. Again, the enumerator can select any farmer from the list as the next potential sample for the survey. The process continues until the required number of samples in the barangay is covered.
100 percent
Survey instrument
The questionnaire was a structured questionnaire written in English. It was designed in tabular form and some in question type format. The data items/variables in the questionnaire were based on the previous questionnaires with some modifications and additions.
The questionnaire was pre-tested and reviewed before its implementation.
The questionnaire consisted of 10 pages covering 15 blocks.
Data collection
| Start | End |
|---|---|
| 2014-03-29 | 2014-04-18 |
| Start date | End date |
|---|---|
| 2013-04-01 | 2014-03-31 |
| Name | Affiliation |
|---|---|
| Philippine Statistics Authority | National Economic and Development Authority |
The provincial office staff were responsible for the supervision of the survey operations. Among the tasks carried out by field supervisors were the conduct of spot checking during data collection to monitor the data collectors' work, back-checking the work of CDCs after data collection and the preparation of field supervision report.
Prior to the survey operations, pre-test of survey procedures and instruments took place in Batangas from February 27 to March 1, 2014. Seven Central Office staff and four provincial office staff conducted the pre-test. Interviews averaged more or less than one hour for the seven sample farmers interviewed from Banaba, Batangas City and Balete, San Nicolas. Issues and concerns that cropped up during the pre-test were addressed with corresponding recommendations for the improvement of the questionnaire.
Three levels of training were conducted. This activity aimed to have uniform understanding of the survey concepts and procedures that were used during the survey operations. The first level was the training of selected Central Office (C.O.) staff who served as trainers in the next level of training. The second level training was for the Provincial Agricultural Statistics Officers and selected staff of the six provinces. They served as trainers for the third level training which was intended for Contractual Data Collectors (CDCs). They were trained on the survey concepts, survey procedures and on filling up the questionnaire.
The data collection was carried out by Contractual Data Collectors (CDCs) through face-to-face interviews of the sample farmers in sample barangays using a structured questionnaire.
Data processing
Editing and coding of survey returns were done at the provincial offices upon submission of the accomplished questionnaires by the CDCs. These activities were undertaken to ensure the quality of data that were collected.
Data appraisal
Not applicable.
Series of reviews were done to assess the quality of the data in terms of reliability and acceptability. A comparison with the results of past surveys on input usage, labor utilization, production cost and return structure of cassava was made.
Data Access
| Name | Affiliation | URL | |
|---|---|---|---|
| National Statistician | Philippine Statistics Authority | www.psa.gov.ph | info@psa.gov.ph |
| Is signing of a confidentiality declaration required? | Confidentiality declaration text |
|---|---|
| yes | The PSA and its field personnel shall hold all data supplied by the establishments/households/individuals in confidence. The information obtained from each respondent of the census/survey or individual/establishment in administrative records shall be for statistical purposes only and not for taxation, regulation nor investigation purposes. The data shall be processed with others of the same category and shall be disseminated in summary forms or statistical tables so as not to reveal the identity of any respondent. Confidentiality of primary data collected from respondents/administrative records systems is guaranteed by Section 26 of the Republic Act No. 10625 (Philippine Statistics Act of 2013). Penalties shall be enforced to acts of breach of confidential information pursuant to Section 27 of the said Act. |
Authorization to use this data is granted only to the client or data user and persons within its organization, if applicable. Under no circumstances shall the client reproduce, distribute, sell or lend the entire data or parts thereof to any other data user apart from himself or that of authorized employees in his organization. The PSA shall hold the data user fully responsible for safeguarding the data from any unauthorized access or use.
Before being granted access to the dataset, all users have to formally agree:
- To make no copies of any files or portions of files to which s/he is granted access except those authorized by the PSA.
- Not to use any technique in an attempt to learn the identity of any person, establishment, or sampling unit not identified in the dataset.
- To hold in strictest confidence the identification of any establishment or individual that may be inadvertently revealed in any documents or discussion, or analysis. Such inadvertent identification revealed in her/his analysis will be immediately be reported to the PSA.
Philippine Statistics Authority, Costs and Returns of Cassava Production 2014, Version 3 of the public use dataset, provided by the PSA Data Archive. www.psa.gov.ph/psada
Disclaimer and copyrights
The data users/researchers acknowledge that the PSA and the agency funding the study bear no liabilities and responsibilities for any particular, indirect, or consequential damages or any damages, whatsoever resulting from loss of use, or of data in connection with the use or for interpretations or inferences based upon such uses.
(c) 2014, Philippine Statistics Authority
Contacts
| Name | Affiliation | URL | |
|---|---|---|---|
| Chief, Agricultural Accounts Division | Philippine Statistics Authority | aad.staff@psa.gov.ph | www.psa.gov.ph |
| Chief, Knowledge Management and Communications Division | Philippine Statistics Authority | info@psa.gov.ph | www.psa.gov.ph |