Survey on Costs and Returns of Sweet Potato (Camote) Production 2014
Philippines, 2014
Get MicrodataIdentification
PHL_2014_CRS-CAMOTE_v01_M
Survey on Costs and Returns of Sweet Potato (Camote) Production 2014
| Name | Country code |
|---|---|
| Philippines | PHL |
Agricultural Survey [ag/oth]
The 2014 Survey on Costs and Returns of Sweet Potato (Camote) Production is the second of the series of surveys. The first one was conducted in 1997 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]
Version
v.3: Public Use Files
2014-10
Scope
The scope of the survey included the following:
- 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 camote producing provinces: Camarines Sur, Negros Occidental, Quezon, Agusan del Norte, Bohol and Agusan del Sur.
The survey covered farmers who harvested camote within the reference period and knowledgeable on the details of camote 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 May 2013 to April 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
The domain of the survey was the province. A two-stage sampling design was employed with the barangay as the primary sampling unit and the sample farmer as the secondary sampling unit. The top producing barangays were selected from an ordered list of barangays. The sample farmers were identified in each sample barangay using snowball approach during data collection.
The total number of sample barangays per province was fifteen or less. If the number of major producing barangays that contributed to 80 percent based on area planted were more than 15, 15 barangays were selected. Those provinces with less than 15 barangays that produced sweet potato were completely enumerated. This approach ensured representation of the barangays in the province in terms of area planted to sweet potato. The total number of sample farmers per province was set at 75 and equally allocated to the sample barangays. The list of sample barangays per province and corresponding number of samples were provided to the Provincial Operations Center (POC) of the former Bureau of Agricultural Statistics (BAS) prior to the survey.
During data collection, the names and addresses of sweet potato farmers residing in the barangay were obtained from the office of the barangay chairman or any other key informants in the barangay. It served as the data collector's starting point in searching for potential sample farmers. The target numbers of sweet potato farmers in the sample barangays were obtained using snowball sampling. A set of screening questions was applied to confirm if those listed actually harvested sweet potato during the reference period and satisfied the other criteria to qualify for enumeration.
Whether the interviewed farmer was qualified for the survey or not, he/she was asked to identify other sweet potato farmers in the barangay to be added in the initial list. The search continued, and the farmer who met the criteria specified in the screening questions was qualified as sample for the survey and was interviewed using the questionnaire for the 2014 Survey on Costs and Returns of Sweet Potato (Camote) Production. If the interview was successfully carried out (meaning, all the needed information had been supplied), the household number, full name and residential address of the sample farmer were written in the List of Sample Farmers. The enumerator selected again any farmer in the initial list as the next potential sample for the survey. The process continued until the required number of samples in the barangay was obtained.
100 percent response rate
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 12 pages covering 13 blocks as follows:
A. GEOGRAPHIC INFORMATION includes the location of the farm such as the name of the region, province, city/municipality and barangay.
B. SAMPLE IDENTIFICATION such as the name, age, sex,level of education completed, main occupation, number of years engaged in camote farming (as operator), name of respondent and its classification, contact number
C. BASIC CHARACTERISTICS OF THE FARM such as total physical area, number of parcels operated by the farmer, area planted and harvested to camote, cropping pattern, number of croppings per year, variety of camote planted, tenurial status, month of planting and harvesting camote, main use of camote and source of planting materials,
D. FARM INVESTMENTS such as inventory of farm investments used, year and cost of acquisition, repairs and improvement cost and estimated life and usage in the focus camote farm.
E. MATERIAL INPUTS contain the quantity, cost and mode of acquisition of planting materials, fertilizers, soil ameliorants and pesticides.
F. LABOR INPUTS such as labor utilization (in terms of mandays) and labor cost by type of farming activity and by source and type of labor and food cost incurred.
G. OTHER PRODUCTION COSTS cover cash and non-cash payments for land tax, land lease/rental, rental value of owned land, rentals of machine, animals and tools and equipment, fuel and oil, transport costs of inputs, electricity and water, interest payment on crop loans, storage cost and other production costs.
H. PRODUCTION AND DISPOSITION such as volume of the produce and its disposition in the form of camote roots and planting materials terms of sold, harvesters' share, threshers' share, other laborers' share, landowners' share, lease rental, for home consumption and home-based processing, given away, used for seeds and feeds, wastage and other purposes.
I. PRODUCTION-RELATED INFORMATION such as problems affecting camote production and comparison of production during the reference period with the same period of last year and the reasons for such changes.
J. MARKETING RELATED INFOMATION includes the major buyer of camote and problems related to marketing of the produce.
K. ACCESS TO CREDIT such as the amount and source of crop loan and interest rate per annum
L. FARMER'S PARTICIPATION IN CAMOTE PROGRAMS/PROJECTS such as awareness in government program/intervention on camote and benefits gained
M. OTHER INFORMATION such as the effect of climate change on farming practices and the practice of natural faming method and membership and name of camote farmers' organization and benefits derived
N. PLANS AND RECOMMENDATIONS includes plans and recommendations to improve camote production
O. INTERVIEW PARTICULARS contain the name and signature of contractual data collector, field supervisor/editor and PSO and date accomplished.
Data collection
| Start | End |
|---|---|
| 2014-05-24 | 2014-06-13 |
| 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 Quezon from April 7 to 9, 2014. This was participated in by seven Central Office staff and four provincial office staff. Interviews averaged 52 minutes for the six sample farmers interviewed from Mamala-1, Sariaya and Samil, Lucban, Quezon. 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 interview of the sample farmer 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 camote 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 Sweet Potato 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 |