Building local capacities in weed management for rice-based systems


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Presented by Jonne Rodenburg (Africa Rice Center) at the Africa RISING East and Southern Africa Research Review and Planning Meeting, Arusha, Tanzania, 1-5 October 2012

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Building local capacities in weed management for rice-based systems

  1. 1. Africa RISING East and Southern Africa Research Review and Planning Meeting, Arusha, Tanzania, 1-5 October 2012 Building local capacities in weedmanagement for rice-based systems Jonne Rodenburg Africa Rice Center (AfricaRice)
  2. 2. Contents • Weed knowledge capacities enhanced among local agricultural R&D professionals and students: Weedsbook • Locally adjustable rotary weeders tested • Local craftsmen trained in the manufacturing of locally adjustable rotary weeders • 2 videos on labor-saving weed management
  3. 3. Weed science workshop• Sokoine University of Agriculture (SUA), Morogoro: 10 May 2012• 37 participants (10F:27M)• Introducing and demonstrating Weedsbook & AFROweeds identification tool• Demonstrating herbarium preparation and photographing for online data base
  4. 4. Labor-saving weeding interventions Rotary weeders Herbicides
  5. 5. Blacksmith workshop: rotary weeders• Blacksmith workshop on manufacturing locally adaptable rotary weeders for lowland rice• Morogoro – 10-12 July, 2012, Intermech Engineering Ltd• 34 participants: • 12 blacksmiths • 16 engineers • 5 governmental organizations; 11 private enterprises• 3 different rotary weeder types were manufactured and tested during the workshop• CAMARTEC produces 3D technical drawings
  6. 6. Rotary weeder tests• Testing rotary weeders against pre- emergence herbicides and hand weeding: o Time of weed intervention o Weed biomass and rice yield• Bagamoyo; 1st season April-August, 2nd season August-December
  7. 7. Rotary weeder tests• Hand weeding at 21 and 42 days after transplanting (DAT)• Pre-emergence herbicide (Ronstar: oxadiazon) application at 4 DAT + hand weeding at 42 DAT• Rotary weeding Madagascar-type at 21 and 42 DAT• Rotary weeding Japan-type at 21 and 42 DAT Madagascar-weeder Japan-weeder
  8. 8. Weeding time (min./man/11.25 m2) • Hand weeding = 444 man per intervention method hour/ha/season • Herbicide most labor-saving (18% of hand weeding time) • Rotary weeders can reduce labor inputs by 50-64% Weed biomass (g/m2)and rice yields (t/ha) per intervention method Weed DW T1 (g/m2) 9 Weed DW T2 (g/m2) • Only early weed biomass 8 7 Weed DW Harvest (g/m2) Yield (t/ha) (at 21 DAT) affected by 6 5 weed intervention 4 b b b 3 • No significant yield 2 1 a differences 0 Hand weeding Madagascar Japan weeder Pre-emergence weeder herbicide (Ronstar)
  9. 9. Rotary weeder tests• Weeding time can be further reduced through practice• Water management and land leveling is important• Currently running 2nd season test (duplicate)• CAMARTEC to provide 3D technical drawings of three weeder types, to be disseminated with video• Next step: on-farm testing with farmers, testing line tracers, seeders
  10. 10. Weed management video production• 2 farmer-to-farmer videos on labor-saving weed management options: 1) “rotary-hoe weeding in lowland rice” 2) “safe and efficient use of herbicides”• Filming with Real2Reel Film Productions: 1) 7 days: 4-10 September 2012 2) 3 locations: Ifakara, Morogoro and Moshi• Editing & Translations: 11 Sept. – 31 Oct.• DVD production in 5 languages – o combined with previous AfricaRice “Weed Management” and “Transplanting” videos
  11. 11. Project specific indicatorsPlanned Achieved• 2 new videos produced in four o In progress (finalizing languages 31/10/12)• 10,000 DVDs o To be produced in November• 5,000 stakeholders reached with video o November / December• 25 local agricultural R&D professionals o Achieved and students trained and included in Weedsbook• 10 blacksmiths and 5 representatives of o Achieved relevant organizations trained• 2 prototypes of rotary weeders for o Partly achieved Tanzania selected/tested/improved
  12. 12. Partners• ACDI-VOCA (project: NAFAKA – Tanzania Staples Value Chain; Morogoro, Tanzania)• SUA (Sokoine University of Agriculture; Morogoro, Tanzania)• KATC (Kilimanjaro Agricultural Training Center; Moshi, Tanzania)• MATI-Igurusi• MARI• CAMARTEC (Centre for Agricultural Mechanization and Rural Technology; Arusha, Tanzania )• Intermech Engineering Ltd (private sector; Morogoro, Tanzania)• MAFC
  13. 13. Thank you!