Mapping rice in the Philippines - when

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For decision-making related to food security, it is crucial to know when and where rice is planted and harvested. Such information can be used in various ways in both research and development. A detailed rice calendar is useful for characterizing rice areas, modeling rice growth, estimation of yield, identifying appropriate timing of technological interventions, analyzing vulnerability to adverse climatic conditions as well as pest and diseases, and assessing damages brought about by typhoons and other calamities. These applications of a detailed rice calendar contribute to better assessment of seasonal and geographic variations in food supply, which, in turn, is important for mitigating potential significant shortfalls in food production at certain times of the year.

peak rice planting calendar

peak rice harvesting calendar

This set of maps shows when and where rice is planted and harvested throughout the year, which includes three growing seasons, in the Philippines.

The International Rice Research Institute (IRRI) has been compiling the most detailed available data on rice planting and harvesting dates by growing season in all rice-producing regions worldwide. Data on start, peak, and end dates of sowing/planting and harvesting of rice at the subnational level for all rice-growing seasons have been collected globally. In the Philippines, DA-PhilRice is partnering with IRRI on the project, and data are available by province and for the wet and dry seasons, as well as for the third crop where available.

This data on when rice is cultivated in each province is one component of a rice information system for the Philippines that can provide researchers and decision-makers with the best possible data on rice production. Ongoing research under the Remote Sensing-based Information and Insurance for Crops in emerging Economies (RIICE) project and the new DA-supported Philippines Rice Information System (PRISM) projects will enable us to provide even more detailed rice crop calendars for each season.

The rice calendar database developed at IRRI is being compiled from various published sources like international and national publications, online sources, and experts from IRRI and their collaborators from various countries. The data for the Philippines were collected together with the Philippine Department of Agriculture (DA) - Philippine Rice Research Institute (PhilRice) as part of the Philippine Rice Self-sufficiency Project (RSSP) supported by the DA.


  • DA-Philippines Rice Research Institute (DA-PhilRice)
  • International Rice Research Institute (IRRI)


For more information, please contact:

Samarendu Mohanty
Social Sciences Division Head, IRRI
Nasreen Islam Khan
Senior Scientist and GIS Head, IRRI

Alice Laborte
GIS and Market Specialist, IRRI