Philippines - Palay and Corn Stocks Survey 1 2016

The domain of the survey is the province. The sampling procedure used in the Palay and Corn Stocks Survey 1 (PCSS1) makes use of one replicate of the Palay and Corn Production Survey (PCPS). Sample selection is done in two stages -- at the barangay level and at the household level. The province's classification is taken into consideration in the classification of barangays sampled.

- For pure palay provinces, or provinces whose major crop is palay, all the 10 sample barangays from one replicate of the Palay Production Survey (PPS) are covered.

- For pure corn provinces, or provinces whose major crop is corn, all the 10 sample barangays from one replicate of the Corn Production Survey (CPS) are covered.

- For palay and corn (overlap) provinces, or provinces where both palay and corn are the major crops, five (5) barangays are drawn from the PPS sample barangays and another five (5) from the CPS sample barangays.

- For minor provinces, or provinces whose major crop is neither palay nor corn, five (5) sample barangays are drawn.

In the selection of sample households (SSU), the PCSS1 incorporated non-farming households, in addition to farming households of the PCPS. Selection of the five (5) non-farming households was using simple random sampling.


The expansion factor of the PCSS1 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.