k.l. heong & monina escalada€¦ · langaw-langaw (whorlmaggot) dangaw-dangaw (semi-looper)...
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Implementation of Ecological Engineering: Experiences in the last decade and options
for LEGATO & dissemination (WP 5.2 & 6)
K.L. Heong & Monina Escalada
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Adding value to scientific research
Ecological engineering
Distillation
Evaluation
Communication
Adaptation/Adoption
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The challenge: reaching millions
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Perceptions and decisions
• Perceptions of risks • Beliefs and attitudes • Social norms – influence of friends,
family, neighbors, pesticide retailers, other farmers
• Mass media
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How people make decisions?
Human decisions in real life are behavioral in nature.
Satisficing rather than optimizing (Simon, 1957)
Simplicity & frugality rather than rationality & optimality.
Fast and slow thinking (Kahneman, 2012)
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Heuristics
Rules of thumb Simplifications that effectively limit
the search for solutions
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Heuristic (or simple rule)
“”In the first 40 days of the rice crop,
spraying for leaffolder
control is not necessary"
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Systematic biases in heuristics (Tversky & Kahneman 1974)
Representativeness - tendency to judge a stimulus belonging to a class on the basis of how “typical” it appears e.g. “all worms are pests”
Availability - tendency to judge an event to be more common when it is more easily recalled e.g. “Banaue farmers think giant earthworms are very common pests.”
Anchoring bias - tendency to fix judgment based on initial impression and failure to revise bias even when new information is presented e.g. “Despite training, decisions remain unchanged”
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emic - etic framework An anthropological tool for understanding farmer decisions
Emic (Local knowledge)
Leaf folders cause damage and yield loss
Insecticides must be used to prevent leaf folders from increasing.
Etic (Research knowledge)
Leaf folders cause damage but rarely result in yield loss
Natural biological control keep leaf folders from increasing
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Ratoon
Buto Dapog, Nagsusuhi Naglilihi Nabusbos Sapaw Pahinog AanihinSukdulang pagsusuhi
PauhayBinhi,
Punla Malagatas
Malahipon,
Malabato
Pahuwa
Seed Seedling Tillering Maximum tillering Booting Flowering Ripening Harvest
30 40 500 90 12010 20 70 8060 100 110Days
Panicle initiation
Seed Seedling Branching Maximum branching
Nagbubuntis Namamatala,
Conceiving Pregnant About to exert flowers Flowering Fruiting About to ripe Harvestable Harvested
Milk-like
Shrimp-like,Stone-like
Tipasi Binhi Pagsipak Pagpanaha Paglilihi Pagbusog Pagpamuswak
Pagtibos
Paghinog Anihunon Subing
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Farmers’ classification of leaf feeding insects
Insekto
Ulod
Kapan (Grasshopper)
Lipit-lipit (Leaffolder)
Bunhok (Leafhopper)
Langaw-langaw (Whorlmaggot)
Dangaw-dangaw (Semi-looper)
Ulod (Caseworm)
Ulod (Cutworm)
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Theory of Planned Behavior (Ajzen, 1991)
Attitude toward the behavior
Subjective norm
Perceived behavioral
control
Behavior
Intention
Source: Ajzen, Icek (1991). Organizational Behavior and Human Decision Processes, Vol. 50, pp. 179-211.
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Scaling up framework Assess farmer needs and problems. – FGD, emic-etic, audience research & baseline survey
Evaluate available technical information and “distill” them into decision rules.
Encourage farmers’ evaluations, modify, and design intervention through a participatory planning process with stakeholders.
- farmer participatory research
Simplify innovation/technology in easy-to-follow steps.
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Scaling up framework
Select the most cost-effective extension materials
Develop prototype extension materials
Pretest the prototypes, revise and finalize
Plan distribution scheme and timeline, outline committee members’ responsibilities
Implement dissemination plan.
Monitor and evaluate.
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To integrate IPM & EE principles, farmers were trained to:
Populate their bunds with nectar rich flowers, such as those from the compositae family
Withhold insecticide sprays in the first 40 days after planting
Observe hymenopteran biodiversity, particularly bees in yellow pan traps installed for farmers
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Community with nectar-rich flowers in crop stages (Ho Van Chien)
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Landscape transformation in many Vietnam provinces
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Three common planthopper parasitoids: A = Oligosita B = Anagrus C= Gonatocerus
How to communicate egg parasitism
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Life cycle of parasitoid of hopper eggs
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Simple rule cluster
Flowers on the bunds provide food to attract bees and relatives.
The bees and relatives will help me control the hopper invading my fields, so I don’t need insecticides.
If I apply insecticides, it will kill the bees and relatives.
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•Bees are bigger, easier to observe and also well known.
•Farmers are taught to observe the bee populations as indicators of parasitism.
Why bees?
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Multi-media was used to promote the EE initiative – posters, leaflets, billboards, radio and TV spots.
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Ecological Engineering TV series Vinh Long TV, Vietnam – Saturday, 1640 hrs, replayed on Sunday 0800 hrs
Part 1 – Entertainment – This part is a funny vignette that revolves around three characters categorized as “positive”, “transitional” and “negative” with regard to their attitudes toward ecological engineering.
Part 2 – Education – In response to the question in Part 1, this part provides the scientific explanation.
Part 3 – Summary – This part summarizes the key points learned from this episode and announces next episode’s topic.
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For details, visit: