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Developing a clean seed delivery system for cassava and sweetpotato in Kenya

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Presented by Ruth Amata (Kenya Agricultural Research Institute) at the First Bio-Innovate Regional Scientific Conference, Addis Ababa, Ethiopia, 25-27 February 2013 …

Presented by Ruth Amata (Kenya Agricultural Research Institute) at the First Bio-Innovate Regional Scientific Conference, Addis Ababa, Ethiopia, 25-27 February 2013

Published in: Technology

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  • 1. Developing a clean seed delivery system for cassava and sweetpotato in Kenya By Dr. Ruth Amata Kenya Agricultural Research Institute First Bio-Innovate Regional Scientific Conference United Nations Conference Centre (UNCC-ECA) Addis Ababa, Ethiopia, 25-27 February 2013
  • 2. Participants • Githiri Mwangi-JKUAT• Ruth Amata - KARI • Kamau Joseph-EAPP• Elijah Ateka-JKUAT• Kasina Muo - KARI • Ndolo Phillip-KARI • Obiero Hannington-KARI• Kuyia Joan-Ministry of Agriculture • Mwaniki Shelmith-KARI• Sila Martha-Ministry of • Kagondu Abed-KEPHIS Agriculture • Kihurani Agnes-JKUAT• Momanyi Violet- KARI • Agili Samuel-CIP• Githunguri Cyrus-KARI • Odero Benard-CRS• Wangai Ann - KARI • Mbugua Edward-GTIL• Miano Douglas – KARI • Atuncha H-JKUAT• Mamati Edward-JKUAT • Farmers• Omari Jane -NCST
  • 3. Introduction• Cassava and sweetpotato - propagated through stems and vines• Major challenge - lack of an effective system for availing clean planting materials to farmers• Major viral diseases - Sweet potato virus disease, cassava brown streak and cassava mosaic virus diseases (transmitted through infected plant material and cause losses of up to 70%)• Over 98% of planting materials are disseminated through farmer to farmer exchange and sale of cuttings in local markets• Hence the need to develop an effective model for clean seed for these 2 crops
  • 4. Methodology• Stakeholder interactive discussions held at workshops (KARI Kabete - November 2011 / 2012)• Participants - from different cassava and sweetpotato value chain levels• Technology developers, producers, proc essors, consumers and regulators
  • 5. Methodology• Participants - randomly assigned to 3 groups• Review of existing tuber crop seed production and distribution systems• Constraints and opportunities identified• Participants proposed 3 models from which 1 hybrid model was developed
  • 6. Opportunities for a clean seed system• Capacity in disease screening technologies• Private sector laboratories - already involved in multiplication - (Tissue culture)• Policy review for the 2 crops is underway (Goodwill from the government)• Credit is available for commercialization of clean seed production for cassava and sweet potato
  • 7. Challenges for a clean seed system• Lack of appropriate policies to enable clean seed certification process and enforcement of quarantine measures• Lack of standards / thresholds to guide and enhance the certification process• lack of awareness of implication of using infected material versus clean material
  • 8. Figure 1. Model proposed by Group 1 participants at thecassava/sweetpotato clean seed workshop held at KARI Kabete on 3rd May 2012.
  • 9. Figure 2. Model proposed by Group 2 participants at thecassava/sweetpotato clean seed workshop held at KARI Kabete on 3rd May 2012. Germplasm Collection & NARS, KEPHIS Conservation Screening/Pre-testing Infected material NARS, KEPHIS for diseases Only Clean Cleaning material NARS, Multiplication of KEPHIS tested/clean material = Confirmatory Testing Starter/Breeder material for diseases NARS, KEPHIS, Mass Multiplication of Mass Multiplication of GTIL, MoA - ATCs tested material to get tested material by TC Farmers/Farmer cutting/vines Groups Farmers getting cuttings, vines or TC material
  • 10. Figure 3. Model proposed by Group 3 participants at thecassava/sweetpotato clean seed workshop held at KARI Kabete on 3rd May 2012. Pre-testing Elite lines/Consumer preferred varieties PRODUCT NARS, KEPHIS, CGIAR Cleaning & Confirmation testing DEVELOPMENT TC PHASE Mass multiplication Breeder’s seed TC Multiplication of Multiplication of breeder’s seed to breeder’s seed (TC) for get cuttings further multiplication to KARI, Regulators, get cuttings Seed merchants, COMMERCIAL PHASE Farmers getting TC plantlets or cuttings for planting
  • 11. Figure 4. Hybrid Model agreed upon by participants at the cassava / sweet potato clean seed workshop held at KARI Kabete on 3rd May 2012. Testing and Pre-testing of elite /consumer preferred material for diseases PRODUCT Cleaning DEVELOPMENT Thermotherapy PHASE NAR’s , KEPHIS Cleaning and / cryotherapy confirmation testing Primary multiplication of tested/clean Indexing material = Starter/Breeder material Multiplication (Tissue culture/screenhouses) NAR’s, KEPHIS, MoA, Secondary Multiplication Private sector isolated fields (Starter/Breeder material ) COMMERCIAL Supply Tertiary Multiplication PHASE in isolated fields NARS, KEPHIS, Private sector, MoA, Farmers / Farmer groups Farmers getting cuttings, vines or tissue culture material
  • 12. Implementation of the cassava/sweetpotato clean seed modelTesting and cleaning Players; KARI Njoro / KEPHISPrimary multiplication Players;• Genetics Technology International Limited (GTIL)• KEPHIS
  • 13. Implementation of the cassava/sweetpotato clean seed modelSecondary multiplication;• GTIL; Farmer groups- Mutomo farmers group (2 CBO’s-Eastern; Western)• KEPHISTertiary multiplication;• 5 individual farmer multipliers - Rift Valley(1); Eastern-2; Western:1• KEPHIS
  • 14. Way forward• Conduct cost analysis of the seed model• Sensitize farmers on the need for clean planting material• Lobby the Government for policies to enhance clean seed certification for cassava and sweetpotato
  • 15. Acknowledgement• SIDA/Bioinnovate program -Financial support • KARI- Administrative and technical support • Collaborators/partners