RICE

• Rice stocks inventory reached 2,444.31 thousand metric tons as of 01 April 2021. This represents an annual increment of 3.2 percent from its level of 2,376.87 thousand metric tons in the same period of the preceding year.
• Month-on-month, rice stocks inventory also increased by 17.5 percent from its previous month's level of 2,080.10 thousand metric tons. (Figure 1 and Table 1)
• Year-on-year, rice stocks from households rose by 17.9 percent and commercial warehouses/wholesalers/retailers by 4.0 percent. However, rice stocks in NFA depositories decreased by -41.9 percent.
• Rice stocks in the households and in the commercial warehouses/ wholesalers/retailers went up by 19.1 percent and 26.3 percent, respectively from their levels in the previous month. Meanwhile, rice stocks in NFA depositories dropped by -9.1 percent.
• Of the total rice stocks for this month, 59.9 percent came from households, 30.2 percent from commercial warehouses/wholesalers/retailers, and 9.9 percent from NFA depositories. (Table 1)

CORN

• The corn stocks inventory as of 01 April 2021 was recorded at 713.68 thousand metric tons, indicating a contraction of -3.0 percent from its level of 736.07 thousand metric tons in the same period of the previous year. Compared with its level a month ago of 461.21 thousand metric tons, corn stocks climbed by 54.7 percent. (Table 2 and Figure 2)
• Relative to the previous year’s level, corn stocks in the households went up by 51.2 percent. However, stocks in the commercial warehouses/ wholesalers/retailers dropped by -19.4 percent.
• Month-on-month, stocks in households and in commercial warehouses/ wholesalers/retailers grew by 28.3 percent and 75.2 percent, respectively.
• Of the total corn stocks inventory as of 01 April 2021, 36.2 percent came from households and 63.8 percent from commercial warehouses/ wholesalers/retailers. (Table 2)

DENNIS S. MAPA, Ph.D.
Undersecretary
National Statistician and Civil Registrar General

Technical Notes

Monthly rice and corn stocks inventory are generated from three sectors, namely: household, commercial, and government (National Food Authority). The household stocks are taken from the results of Palay and Corn Stocks Survey (PCSS) of the Philippine Statistics Authority (PSA). Effective February 2021, PSA also generates the commercial stocks inventory from the results of Commercial Stocks Survey (CSS) per Implementing Rules and Regulations of Republic Act (RA) No. 11203 known as “The Rice Tariffication Law”.  The government stocks inventory is taken from administrative records from the National Food Authority.

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 CSS employs a two-stage systematic sampling wherein the first level of stratification is the line of activity of the NFA registered grains businessmen and the second level of stratification is the businessmen’s capitalization. The line of activity of grains businessmen are stratified into four: 1 - retailers, 2 - wholesalers, 3 - combined retailers/wholesalers and 4 - warehousemen.  The line of activity is further sub-stratified according to businessmen’ capitalization such as 1 - big, 2 - medium and 3 - small capitalization structure, while warehousemen are sub-stratified into two, that is 1 - big and 2 - combined medium and small.