System of Rice Intensification

 In general, the term System of Rice Intensification (SRI) characterizes a management system for irrigated rice production in which very young rice seedlings are planted singly in a square grid pattern. The soil is kept moist, but well drained during the whole growing period. Since no flooding is part of this management practice, weeding has to be done either by hand or mechanically. Organic fertilizers should be preferred over inorganic ones. There is no common guideline which is defining an SRI system in a strict way, it can be rather seen as a science based collection of management options. Each farmer can choose the most suitable technologies and adapt them according to his local conditions.

SRI is reducing costs for water, seeds, and fertilizers, which is leading to a higher profitability. Since the soil is only kept moist and a regular weeding takes place, the soil is well aerated. This is leading to a reduction of methane emission, compared to rice production on continuously flooded fields. 


Further readings:

·       System of rice intensification

·       What is the System of Rice Intensification (SRI) and where is it going? 

·       SRI Brief

IRRI Photo