|Aquaculture - Training Manual (Peace Corps, 1990, 350 p.)|
|Chapter eighteen: Program design - week nine|
Total Time: 15 hours, 20 minutes
· Provide additional experience in site selection and designing a viable pond;
· Give trainees an opportunity to be certain that they are comfortable with these skills as well as to identify and improve aspects that are still confusing, thus enhancing their selfconfidence;
· Practice extension techniques and receive feedback on their effectiveness in communicating technical information.
Overview: This is the second project in site selection and pond design. This exercise takes place near the end of the program, after trainees have seen a variety of pond types on the field trip. Since this is often an area of concern for the trainees (an area in which they lack confidence), the more practice they can get with it the better, especially as the time for their departure overseas approaches. Some differences between this project and the first Site Development exercise are that the trainees work in pairs rather than groups, they are required to use hand levels, they choose their own sites, and the staff participates more actively in the critiques, actually providing direct input and suggestions, and answering questions.
1. In a short classroom meeting, the trainees are told the objectives of this project and are given the instructions for the exercise. They are told that they will work in pairs and use hand levels and hand-made stadia rods. They will be taken to a large area, and from there they will be free to explore and choose their own sites. They are to select a site, do the necessary survey and analysis, and design and stake out an appropriate pond and/or pond system for the site. The pond should be staked out and presented in a clear enough manner that actual construction could follow with the intended results.
2. There is a brief discussion during which trainees should recognize what they will need to take into account and do at the sites, i.e.:
· Site selection: Trainees should take into account:
· constraints such as trees, etc
· water source
· Pond design: Trainees should:
· Flag water source and know elevation (flag natural water course at ten meter intervals and calculate elevations)
· Flag inlet canal
· Know surface area of water
· Flag point at which water enters pond
· Flag dike (mark with at least 3 flags to a side)
· toes, top width, where cut stops and fill begins
· Flag pond bottom (line with greatest slope)
· Flag drainage point
· Flag drainage canal (to where it hits open ground)
· Determine elevation of top of dike
· Determine labor.
3. The following constraints are presented:
· Pond should be designed to have 150 square yards to 300 square yards surface area
· Assume there will be no access to pumps
· Assume there is no PVC pipe available
· Assume pond will be built by hand labor.
Trainees are reminded that they will be presenting their sites to a group. A lot of emphasis will be placed on the extension aspects of this exercise, and once again critiques will follow the presentations. The following should be stressed:
· All information organized in efficient manner
· Good visual aids and demonstrations (encourage creativity in developing new techniques for field demonstrations of important technical points)
· Based on the presentation, the group should have a clear understanding of the system.
4. Trainees work in pairs in the field. As in the last site development exercise, trainers should circulate among the sites to observe and provide logistical support, but should not be involved in the trainees' work or decisions.
5. Trainees give 15 - 20 minute presentations of their sites, followed by a ten minute question and answer period. Following this, the group evaluates the following:
· Choice of site
· Efficiency of use of land in the pond design
· Completeness and correctness of design and staking clarity and style of presentation.
At each site, the trainers wait for the trainees to complete their discussion and critique, then add comments or suggestions regarding the technical and extension aspects of presentation.
Materials and Resources:
· As in the previous site development project, it is important that the staff chooses the general areas with care prior to this exercise. If there are not enough feasible sites, staff can assign given soil types, and/or allow trainees to mark imaginary water sources within certain restrictions (i.e. water sources must be at least some specified distance lower than the high point of a hill, etc.)
· Hand levels
· 1"x 2" boards of six to eight foot length, rulers and markers for making hand-made rods
· Soil auger or shovels
· Surveying flags and/or tape
· Newsprint, markers, other material requested for visual aids
· For the site presentations, the group should be split up so that each large group sees about four sites. Pairs should not be separated. If there is a variety of types of sites (for example, some wooded, some where it is necessary to raise the water level with a dam, etc.), arrange such that each large group sees a representative of each type of site. Again, the logistics can be complicated and should be planned carefully by a staff member well in advance.
· This is a good opportunity for trainers to demonstrate some of the extension techniques they found useful as volunteers. Also be sure to acknowledge good, new ideas that the trainees come up with on their own.
· At the completion of this project, trainers should encourage the trainees to talk with them if there are still areas in which they are confused or nervous. Staff should offer to work with people who would like to do another site development exercise to further reinforce their skills.