Field Guide of Discovery-based Exercises for - Aseanipm ...

How long will this exercise take?
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Field Guide of Discovery-based Exercises for Organic Vegetable Production
• Thirty minutes field walks, observations, and interaction with farmers; and
• Thirty minutes brainstorming session in processing area.
learning objectives
• To create awareness and understanding among participants that spraying Bt can effectively
control lepidopterous pests and enhance natural enemy populations in organically-grown
vegetables; and
• To learn from other farmers and do hands-on of innovative approaches on how Bt can effectively
control lepidopterous pests and enhance natural enemy populations in organically-grown
vegetables.
materials
• Office supplies (e.g., notebooks, ball pens, marking pens, crayons, Manila papers);
• Other supplies (e.g., locally available Bt biological pesticide, measuring cup, sprayer, detergent,
and water); and
• Organically-grown vegetables in learning and adjoining fields showing relatively moderate to
serious infestation of lepidopterous pests.
methodology
• Field walks, hands-on, and brainstorming
steps
1. Divide participants in small groups and ask them to conduct field walks and observe organicallygrown
vegetable crops showing relatively moderate to serious lepidopterous pest infestation
sprayed with Bt and chemical pesticides in learning and adjoining fields. Take note of presence
and number of pests and natural enemies. Interview other farmers, if necessary. List down all
observations related to pest and natural enemy activity and occurrence, crops infested, degree,
and characteristic damage, etc.
2. Facilitate each to do hands-on of spraying Bt against lepidopterous pests when relatively
moderate to serious infestation are observed on organically-grown vegetables in learning field,
as follows: