Bioversity International researcher Rose Nankya presents positive results from Uganda where they have had testing crop varietal mixtures of banana and common bean for pest and disease management. This research is being carried out in four countries: China, Ecuador, Morocco and Uganda. Learn more about our work on Pest and Disease management here: https://www.bioversityinternational.org/research-portfolio/agricultural-ecosystems/pests-and-diseases/

1. IFAD funded program: “Improving productivity and resilience for the rural
poor through enhanced use of crop varietal diversity in IPPM;
Results from Uganda
Rose Nankya, Program Specialist
Workshop 20-24 April 2015 in Rome, Italy

2. Bioversity InternationalR. Nankya

3. Some of the results from mixture trials

4. Increased diversity of crop varieties corresponded to a decrease in
average crop damage levels and reduced risk to future damage
Year
Average
HH
richness
Average
HH
Evenness
Community
Richness
Community
Evenness
Divergence
WDI ALS
2013
2.52 0.5 22 0.82 0.4 14.4
2008 2.4 0.38 26 0.87 0.6 17.58
The diversity and weighted damage indices for Rubaya site
Collecting data at the moment to see impact of the phase

5. traditional varieties with more effective resistance
to pests and diseases when grown outside their
home sites
Variety Home site Reistance to Where
Shemererwa Rubaya Angular leaf spot Namulonge
Katosire Kabwohe Bean fly, Angular
leafspot
Namulonge, Nakaseke
Kishoga Kabwohe Angular leafspot Namulonge, Rubaya
Kankuryembarukye
purple
Rubaya Angular leafspot Namulonge, Kabwohe
Kanyobwa long Nakaseke Angular leafspot Namulonge, Kabwohe
Kasirira Bunyaruguru Beanfly Nakaseke, Kabwohe, Namulonge
Kaki short Nakaseke Beanfly Namulonge, Kabwohe
Yellow long Nakaseke Beanfly Namulonge, Kabwohe

6. Increased number of different landraces with different resistance available to
farmers (amount of seed; number of varieties; number of farmers reached)
KIZIBA SEED BANK SEED QUANTIES AND NO. OF BENEFICIARIES

7. Increased number of different landraces with different resistance available to
farmers (amount of seed; number of varieties; number of farmers reached)
Nakaseke seed bank
• Started with 379kg of common bean seeds of 37 varieties last
season given to 45 farmers
•This season, have distributed 293kg to 39 farmers
•Due to bad last season, 329kg owed to the seedbank
•Nakaseke site in 2008 had a community richness of 12 common
bean varieties

8. Increased production from clean diverse seeds
Nabadda Florence of Nakaseke site

9. Increased production from clean diverse seeds,
other public pronunciations:
Ntudde Justine of Nakaseke – banana growing trainings
Jovaile Muhoozi of Kabwohe – growing common bean mixtures
Joy Mugisha of Kabwohe – growing mixtures, increased diversity
of beans
Nantongo Sophia of Nakaseke – increased diversity of beans
Musinguzi Boaz of Kabwohe – good quality seed from Kiziba seed
bank ( 1seed: 9 seeds now 1seed :50 seeds)
Sebuwufu Allen – banana growing trainings

10. Social Cohesion

11. Social Cohesion

12. Examples of linking good agronomic practices with intra-specific
crop diversity to management pest and diseases to improve
production

13. Examples of linking good agronomic practices with
intra-specific crop diversity to management pest
and diseases to improve production

14. Progress in using the Damage Abatement
framework
One of the major findings was that, in Uganda, banana
diversity has a positive effect in reducing the incidence
of pests and diseases.
 Encouraged farmers to increase the diversity on-
farm by making them aware of the above positive
effect.

15. Abatement framework
The other finding is that the most important aspect of
diversity for abating yield losses is evenness.
Encouraged farmers to mix varieties in relatively
equal proportions to attain maximum benefit of abating
yield losses

16. Capacity built and Training materials developed
Knowledge products /
mechanism
Number No. of farmers / stakeholders
reached
Training manuals 2 900
Video 3 1000 and more
Dramma 1 600
Website articles 6 Not tracked
Workshops 6 882
Diversity fairs, exhibitions 1, 4 2000
Cross site visits 2 100

17. Capacity built and training materials developed
Knowledge products /
mechanism
Number No. of farmers / stakeholders
reached
Posters 3 (2 in International
conferences; 1 in National
conference)
Over 2000?
Peer reviewed publications 2 Not tracked
Case studies 1 Not tracked
On-farm demonstrations 24, 8 720
Knowledge sharing events
between scientists and farmers
2 130

18. Acknowledgements:
FARMERS

20. www.bioversityinternational.org
Thank you