1020 Introduction to Opportunities with the System of  Rice Intensification (SRI)
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1020 Introduction to Opportunities with the System of Rice Intensification (SRI)

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Presented by: Norman Uphoff, CIIFAD, Cornell University, USA

Presented by: Norman Uphoff, CIIFAD, Cornell University, USA

Presented at: CNRRI Workshop, Hangzhou

Date: 2/28/10

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  • Picture provided by George Rakotondrabe, Landscape Development Interventions project.
  • Picture provided by Dr. Koma Yang Saing, director, Cambodian Center for the Study and Development of Agriculture (CEDAC), September 2004. Dr. Koma himself tried SRI methods in 1999, and once satisfied that they worked, got 28 farmers in 2000 to try them. From there the numbers have increased each year, to 400, then 2100, then 9100, then almost 17,000. Over 50,000 farmers are expecting to be using SRI in 2005. Ms. Sarim previously produced 2-3 t/ha on her field. In 2004, some parts of this field reached a yield of 11 t/ha, where the soil was most ‘biologized’ from SRI practices.

1020 Introduction to Opportunities with the System of  Rice Intensification (SRI) 1020 Introduction to Opportunities with the System of Rice Intensification (SRI) Presentation Transcript

  • Introduction to Opportunities with the System of Rice Intensification (SRI) CNRRI Workshop, Hangzhou February 28, 2010 Prof. Norman Uphoff Cornell University
  • System of Rice Intensification (SRI) is Not a Technology
    • SRI derives from experience working with farmers in Madagascar during 1960s-1970
    • SRI was synthesized in the early 1980s
    • SRI capitalizes upon potentials that have always existed in the rice plant
    • By changing the way that plants, soil, water and nutrients are managed, SRI methods  more productive PHENOTYPES from most rice GENOTYPES - old & new
  • System of Rice Intensification (SRI) is Ideas and Insights
    • SRI started with irrigated rice ; but now adapted to rainfed/upland/unirrigated rice
      • Paddy yields in Eastern India of 7 t/ha ave.
      • Yields in Northern Myanmar are 4-6 t/ha
      • Yields in Southern Philippines were 7 t/ha
    • SRI methods are also now being adapted for other crops : wheat, millet, sugar cane, pulses, teff, legumes, etc. successfully
    • SRI is concerned with MANAGEMENT
  • SRI Concepts and Methods Are Oriented to Better Phenotypes
    • How to create most favorable growing conditions for the rice plant?
    • SRI practices reflect these principles :
      • Rice is not an aquatic plant – it grows better in well-drained soils, with ‘ minimum of water ’
      • Crowding affects rice plants adversely -- just as it affects all other plants badly
      • Soil fertility depends crucially on soil biota - success depends on having LIVING SOIL
      • These understandings all affect PHENOTYPE
  •  
  • MADAGASCAR: Rice field grown with SRI methods
  • CAMBODIA: Rice plant grown from single seed in Takeo province
  • INDONESIA: Single-seed SRI rice plant Variety: Ciherang Fertile tillers: 223 Sampoerna CSR Program, Malang, E. Java, 2009
  • Since SRI is Not a Technology, It is Continually Evolving
    • SRI is a work in progress , not yet finished
    • SRI is being continuously improved
      • Particularly by farmer innovations
    • SRI is not a thing – best as an adjective
      • Certainly not a single thing – many versions
    • SRI is open access – no patents, no IPR
    • SRI aims to increase productivity from available resources - land, labor, water, capital
  • Status of SRI: As of 1999 Known and practiced only in Madagascar
  • Before 1999: Madagascar 1999-2000: China, Indonesia 2000-01: Bangladesh, Cuba, Laos, Cambodia, Gambia, India, Nepal, Myanmar, Philippines, Sierra Leone, Sri Lanka, Thailand 2002-03: Benin, Guinea, Peru, Moz 2004-05: Senegal, Mali, Vietnam, Pakistan 2006: Burkina Faso, Bhutan, Iran, Iraq, Zambia 2007: Afghanistan, Brazil 2008: Rwanda, Costa Rica, Ecuador, Egypt, Ghana 2009: Timor Leste, Malaysia 2010: Kenya; Sabah? Panama? Solomon Islands? DPRK? 2010: SRI benefits have now been validated in 38 countries of Asia, Africa, and Latin America