Experimental Design Modification
The onset of feeding will start at 45 and 75 days-in-ponds instead of 30 and 60 days-in-ponds.

Tilapia will be stocked at an individual weight of 1 g per fish instead of 5—10 g per fish.

Production of Improved Extension Materials

Adoption/Diffusion Research 6B (9ADR6B)/Activity

Note: This one-year work plan replaces objective 2 of 9ADR6 in its entirety.

Objective
The goal of the proposed work is to develop and disseminate improved pond management options for intensified production of tilapia by farmers with different resources and capabilities. The specific objective is to:
• develop improved materials and practices for wider dissemination of results.

Pond production of tilapia and other fishes in central Luzon, already one of the Philippines’ most productive inland regions, would benefit from the dissemination of a comprehensive approach to a range of intensity levels, all having a sound theoretical and empirical basis, and all having been demonstrated under local conditions.

Beneficiaries
The primary beneficiaries will be the fish producers and consumers of central Luzon, with much wider effect including other regions of the Philippines and Southeast Asia. Yields and parameters, in differing from those obtained on-station in Thailand, will illustrate differences and ranges of outcomes to be expected elsewhere, for example in AITs target area in Vietnam, Laos, and Cambodia.

Other beneficiaries will include other faculty and staff of CLSU, staff of BFAR and other government agencies, and the clientele (students, advisees) of all. CRSP researchers will benefit from the comparisons noted above, and be better able to design and predict outcomes of work in other locations.

Finally, this work has direct applicability to the US tilapia industry because feeds are a major input cost at all levels of system intensification, and all information about the response of fish growth to different feeding practices is valuable when systems are analyzed or designed anew.

Work Plan and Technical Considerations
1) Characterization of the Research Site
The Freshwater Aquaculture Center at Central Luzon State University has already been the subject of general site characterization, including a description of the site layout, climate, water and soil quality parameters (Bowman and Clair, 1996; Egna, 1997).

2) Proposed Collaborative Work
Because this work is oriented to prompt dissemination, the goal of this activity will be production of a sequence of handout pamphlets and presentation aids (overhead computer screen projection, videotape recordings) matched to each of the anticipated stages of technical progress in on-farm trials associated with works plans 9FFR3 and 9FFR4.

Experimental Design
Extension will be facilitated by production of illustrated pamphlets describing each of the stages discussed above. The fertilization and feed leaflets used by the Asian Institute of Technology (AIT) projects in Northeast Thailand will serve as a model for development of materials here. These will be refined by circulation of drafts to other organizations (Bureau of Fisheries and Aquatic Resources, BFAR) involved in aquaculture extension functions, and by reviews of draft documents by selected recipients to determine the clarity, effectiveness, and appropriate technical level of the information. Farmers participating in on-farm trials (as part of work plans 9FFR3 and 9FFR4) will be given multiple copies of the pamphlets appropriate to each completed trial, for distribution to their own neighbors and visitors. The high level of literacy in the Philippines makes distribution of printed materials an effective nationwide mechanism for dissemination.

Expected Outcomes
The extension materials will be available for at least the first trial and workshop, with those for the second near at hand. Project personnel and others will have learned how to use the appropriate tools and materials, which will likely be shared widely at FAC, and will have this project's products as examples.

Schedule
Production of improved extension materials completed: October 2000
Final report due: April 2001

Report Submission
Final report due on or before 30 April 2001.