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

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Field Guide of Discovery-based Exercises for Organic Vegetable Production
3. Conduct participatory discussions to allow sharing of experiences among participants and
facilitators. Motivate farmers to share their best experiences in proper uprooting and disposal
to manage the tymo virus disease of chayote.
4. Synthesize and summarize output of small groups into one big group output. Draw up
conclusions and recommendations from this exercise.
5. Facilitate farmers to do hands-on of proper uprooting and disposal to manage tymo virus disease
of chayote when early symptoms are observed in learning field by improving procedures given
below:
5 Look for tymo virus-infected vines and trace downward to base of plant;
5 Dig and uproot plants with tymo virus-infected vines;
5 Place uprooted plants in a plastic bag or any suitable container;
5 Dispose and burn tymo virus-infected plants in a pit;
5 Repeat process as often as necessary or as disease symptoms are observed in learning field;
and
5 Take note of all relevant observations and experiences during this activity.
some suggested questions for processing discussion
❏ Did you observe tymo virus-infected chayote plants in farmers’ field? What symptoms did you
observe on chayote plants infected with tymo virus disease?
❏ What chayote varieties or cultivars were more resistant to tymo virus disease? What chayote
varieties or cultivars were more susceptible to tymo virus disease?
❏ What sanitation practices did farmers commonly employ against tymo virus disease of chayote?
❏ Did farmers employ uprooting of tymo virus–infected chayote plants? Did farmers properly
dispose uprooted tymo virus–infected chayote plants? How?
❏ Did you see different degrees of infection in chayote fields where uprooting and no uprooting
of tymo virus-infected plants were done? Did you observe any innovative sanitation practices
employed by farmers? What were these practices?
❏ What other cultural management practices can complement proper uprooting and disposal of
tymo virus-infected chayote fields?