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The International Rice Research Institute (IRRI)

The International Rice Research Institute (IRRI), based in Los Baños, Philippines, develops new rice varieties and rice crop/post-harvest management techniques that help rice farmers improve the yield, profitability, and quality of their rice in an environmentally sustainable way. The institute is helping to reduce poverty and hunger, improve the health of rice farmers and consumers through collaborative research, partnerships, and the strengthening of national agricultural research and extension systems. IRRI work with our public and private sector partners in national agricultural research and extension systems in major rice-growing countries to do research, training, and knowledge transfer. IRRI social and economic research also informs governments to help them formulate policy to improve the equitable supply of rice. 

Contact person: 
Corinta Q. Guerta
Contact email: 

Technologies from The International Rice Research Institute (IRRI)


Multi-stress tolerant Green Super Rice in the Philippines. Cost benefit analysis based on field testing of some lines of Green Super Rice

This technology describes the testing of multi-stress tolerant Green Super Rice (GSR) varieties in the Philippines. The benefits and constraints compared to local varieties are shown in a cost-benefit analysis.

Aerobic Rice

This practice explains where and how to manage ”aerobic rice”. Aerobic rice is a production system in which rice is grown under nonflooded, nonpuddled, and nonsaturated soil
conditions. Because aerobic rice needs less water at the field level than conventional lowland rice, the system is targeted at relatively water-short irrigated or rainfed lowland environments. Irrigation can be applied through flash-flooding, furrow irrigation (or raised beds), or sprinklers.
Site-specific nutrient management (SSNM; www.irri.org/irrc/ssnm) can be used to determine the optimal management of fertilizers.
This growing system experiences more weed growth and more species of weeds, therefore there is a need to control weeds. Soil-borne pests and diseases such as nematodes, root aphids, and fungi are known to occur more in aerobic rice than in flooded rice, especially in the tropics. It is recommended to grow aerobic rice in rotation with upland crops suitable in the area.

Rice farming: Saving water through Alternate Wetting Drying (AWD) method

Alternate Wetting and Drying (AWD) is a water-saving technology that lowland (paddy) rice farmers can apply to reduce their water use in irrigated fields. In AWD, irrigation water is applied to flood the field a certain number of days after the disappearance of ponded water.

Hence, the field is alternately flooded and non-flooded. The number of days of non-flooded soil in AWD between irrigations can vary from 1 day to more than 10 days.