“Modern” Farming and Rural Poverty -  Pros and Cons of SRI
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“Modern” Farming and Rural Poverty - Pros and Cons of SRI

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“Modern” Farming and Rural Poverty - Pros and Cons of SRI

“Modern” Farming and Rural Poverty - Pros and Cons of SRI
by Willem A. Stoop

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“Modern” Farming and Rural Poverty -  Pros and Cons of SRI “Modern” Farming and Rural Poverty - Pros and Cons of SRI Presentation Transcript

  • “ Modern” Farming and Rural Poverty Pros and Cons of SRI Willem A. Stoop 23 January 2009 IFAD, Rome
  • Personal Background
    • Soils and agronomy (Wageningen and UH)
    • Rubber agronomist Liberia
    • Postdoc CIMMYT (Maize agron.) Mexico
    • Agronomist ICRISAT / Burkina Faso
    • Tropical Rainfed Cereal Systems - KIT/RTI
    • ISNAR - The Hague : NARS organisation
    • KIT/RTI : Systems research
    • Independent consultant / WARDA
  • IFAD website
    • 1,05 billion poor women, men and children in developing countries
    • Poor populations mostly in rural areas
    • Depend mostly on agriculture and related activities for livelihoods
  • Do the “rural poor” require specific agricultural techniques? and if so How might these techniques differ from the conventional ones that are readily available? or What type of agronomy would be most relevant to the poor?
  • System of Rice Intensification (SRI) developed in Madagascar during 1980s in response to the conditions, needs and means of resource-poor smallholders
  • Madagascar: (rice) field micro diversity and smallholder adaptation
  • Major contrasts between “modern” and “smallholder” rice farming
    • Modern Farming :
    • Large / intermediate scale
    • Commercial
    • Mechanised
    • External inputs (seeds, ag.chemicals)
    • Capital intensive
    • Smallholder farming :
    • Small – variable scale
    • Self sufficiency – surplus
    • Mainly manual
    • Local inputs (seeds, manure, compost, etc.)
    • Labour intensive
  • Madagascar: SRI local variety
  • Major elements of SRI as compared with conventional practices
    •   SRI:
    • very low seed rates
    • very young transplants:
    • 8 to 15 days old
    • single transplants/hill
    • wide spacing:
    • 25x25 to 50x50 cm
    • no flooding, moist soil
    • compost
    • 3 to 4 rounds rotary hoe
    • Conventional irrigated:
    • high seed rates
    • young transplants:
    • about 21days old
    • 3-5 transplants/hill
    • narrow spacing:
    • 10x10 to 20x20 cm
    • continuous flooding
    • min. fertilizer + N topdressing
    • 2 rounds rotary hoe / herbicide
  • Bouake 189 : SRI-responsive improved variety
  • Varietal responses to conventional irrigated (left) and to SRI (right)
  • Crucial plant features in obtaining high yields with SRI
        • Profuse tillering
        • Profuse root systems
        • “ What will be the optimum bio-physical growth conditions that cause these features to translate into high grain yields?”
  • Pros and cons of SRI
    • Pros
    • Substantial savings :
    • *Seed (suitability of local varieties)
    • *Seed rates: 1/5 to 1/10
    • *Irr. Water: approx. 30-50%
    • *No or limited agric. chem’s
    • *Tolerance to drought and lodging
    • Incr. resource use efficiency
    • No envirm. pollution
    • Cons
    • Labour requirements ??
    • *Delicate timing of operations
    • *Increased (early) weeding
    • (Precise land levelling)
    • (Reliable water source/supply)
    • Risks??
    • *Delicate, small transplants
    • *Early floods
    • *Local socio-institutional: avail. irrig. water / land tenure issues.
  • SRI is NOT a “free lunch” or “blue-print”
    • It requires farming skills: timely management of operations and efficient use of internal resources.
    • With experience SRI can produce attractive grain yields without or with minimal use of costly external inputs through very simple agronomic adjustments.
    • SRI must be viewed as part of a (integrated) farming system.
    • Location/farmer-specific adaptations are crucial.
    • Most initial constraints/risks are of a farm management nature.
  • Possible barriers to SRI dissemination
    • For past decades farmers have been bombarded with recipes for “green revolution” technologies including new seeds and agric. chemicals (mineral fertilisers, herbicides and pesticides).
    • By comparison SRI advises something like an “opposite” combination of practises.
    • Certainly in Africa, foreign aid and public extension services have lost much of their credibility with small farmers.
  • Implications for dissemination of SRI
    • “ Learning” exercise for farmers, extension and scientists:
      • Farmer field schools
      • Farmer organisations / farmer-to-farmer
      • Encourage small-scale, individual farmer experimentation
    • Flexibility in dissemination process: “principles” are introduced, NOT standardised technologies
    • Monitor technological adaptations introduced by farmers
    • Accept initial slow adoption rates, while all stakeholders gain experience
  • Present (global) status of SRI
    • Principles validated in some 30 countries.
    • Increasingly and successfully practised by small farmers in major rice producing countries (India, China).
    • Agro-ecological mechanisms involved remain unclear for lack of adequate research (out-of-the-box thinking).
  • General significance of SRI principles and wider relevance to IFAD
    • For other (cereal) crops.
    • For the resource-poor farmer target group.
    • For environment-friendly agricultural practices: increased efficiency of external input use (seeds and agric. chemicals).
  • Thank you