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

Section 5 • Integrated Disease Management
materials
• Office supplies (e.g., notebooks, ball pens, marking pens, crayons, Manila papers);
• Field supplies (e.g., kerosene can, fire wood, black plastic sheets, mat or jute sacks, sprinkle
cans, etc.); and
• Organic vegetable field ready for seedbed preparation (e.g., vegetable seedbed for the learning
field).
methodology
• Field walks, hands-on, and brainstorming
steps
1. Divide big group into five small groups. Before sterilizing seedbeds by hot water treatment,
each group should observe already established seedbeds in adjoining farms and record estimated
percentage germination, seedling vigor, weeds present, pest and disease occurrence, etc.
2. Each small group will then sterilize their seedbeds (e.g., hands-on) using hot water treatment.
The groups may opt to leave a portion of their seedbed untreated for comparison. The procedure
below is an option that participants can brainstorm in big group for possible modification:
5 Stir soil several times and expose to sunlight;
5 Pour boiling water (70-90%) to seedbed until water penetrates soil to at least four inches
deep;
5 Cover treated seedbed with black plastic sheets for at least 30 minutes; and
5 After one to two days, incorporate appropriate soil media and sow required amount of seeds.
3. Every week thereafter, each group will record same observations they made in their seedbed
before hot water treatment. After every observation, participants should brainstorm in small
groups to summarize their observations but present same to the big group every other week
until seedlings are ready for transplanting. The summary of weekly observations should be
printed in Manila paper.
4. After final observations, conduct participatory discussions in a big group to allow sharing of
experiences among participants and facilitators. Synthesize and summarize output of small
groups into one big group output.
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