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fisheries in Ghana. Technical Cooperation in resource flows. lLElA Newsl. 9(1):6-7. Programme, Field Doc. FI:TCP/GHA/0051, Vincke, M.M.J. and L.1C.A. Awity. 1991. De- 32 p. FAO, Rome. scription and assessment of fish farms in Ofori, j.lC., M. Prein, F. Fermin, D. Owusu and Ghana. Technical Assistance and Investment C. Lightfoot. 1993. Farmers picture new Framework for Aquaculture in Ghana, Field activities: Ghanean farmers gain insight Work. Pap. 10, 28 p. FI:TCP/GHA/005 1 .
Experiments for Integrated Agriculture-Aquaculture System Designa JOSEPH K. OFORI AMBROSE ASAMOAH /nstitute of Aquatic Biology Council for Scientific and /ndustrial Research P. 0. Box 38, Achimota, Ghana MARK PREIN In term tional <strong>Center</strong> for Living Aquatic Resources Management MCPO Box 2631, 0718 Malati City, Metro Manila, Philippines OFORI, J.K., A. ASAMOAH and M. PREIN. 1996. Experiments for integrated agriculture-aquaculture system design, p. 37-41. in M. Prein, J.K. Ofori and C. Lightfoot (eds.) Research for the future development of aquaculture in Ghana. ICLARM Conf. Proc. 42, 94 p. Abstract Growth experiments with Nile tilapia (Oreochromisniioticus) were conducted at the Altosombo Research Station in Ghana to provide baseline data on (a) natural productivity of unfertilized ponds and (b) fish productivity with low rates of cow and chiclten manure input, resembling the situation on nutrient-poor smallholder farms. Fish in unmanured ponds displayed weight loss after a short initial increase, resulting in insignificant growth over a six-month period. Fish growth in experimental ponds receiving chiclten manure was higher than in ponds receiving cow manure, equivalent to a production of I .55 and 1.94 t.ha-'.year-', respectively. A newly constructed pond concurrently operated by a new entrant farmer receiving on-farm residues and household scraps showed the highest production, equivalent to 10.2 t.ha-'.year-'. Introduction s part of investigations on agriculture- A aquaculture integration, on-station and on-farm experiments using farm and household wastes and residues as inputs for fish farming were carried out. On-station experiments using ponds receiving no inputs and manure, respectively, were conducted at the Aquaculture Research and Development <strong>Center</strong> at Akosombo to obtain "ICLARM Contribution No. 961 baseline data on tilapia production. Two sets of experiments were conducted. The first set of experiments involved the determination of tilapia growth and production under conditions of zero or no nutrient input in newly rehabilitated ponds without any fertilization history. Three 0. l -ha ponds were each filled with fresh water and then stocked with Oreochromis niloticus fingerlings of the average weight of 13.6 g at the rate of 2 fi~hsrn-~. Four 0.2-haponds which had been previously used for fish production were used in a related experiment. Two of thq ponds (ZPF 1 ), although fertilized before, had
Page 1 and 2: I .. & t I' r i ~ 4
Page 3 and 4: d / Research for the Future Develop
Page 5 and 6: Foreword S ince 1986, ICLARM has im
Page 7 and 8: main advantages of the cooperation
Page 9 and 10: Past Initiatives for Promoting Aqua
Page 11 and 12: D Probfems In previous aquaculture
Page 13 and 14: systems (Wijkstrom and MacPherson 1
Page 15 and 16: Stage 1 Evaluate present status Sta
Page 17 and 18: economic performance of different n
Page 19 and 20: Mapping of Aquatic Resource Systems
Page 21 and 22: Ghana a* Flg. 1. The 40 available n
Page 23 and 24: Small Water Bodies Dams, dugouts an
Page 25 and 26: Flg. 4. Irrlgatlon areas In Ghana (
Page 27 and 28: of Agriculture, Ho, Ghana, and Mani
Page 29 and 30: go to farm on equal terms with our
Page 31 and 32: Table 2. Farmer status and tenuresh
Page 33 and 34: Gender Issues in Resource-Poor Farm
Page 35 and 36: umbrella, leading to the cropping o
Page 37 and 38: Fish 82% Cured f~sh 58 % Fig. 1. Co
Page 39 and 40: Rapid Appraisal of Low-Input Aquacu
Page 41 and 42: Farm transect: Joseph Amponsah Kapu
Page 43: expenses. Fingerlings are not commo
Page 47 and 48: highly turbid ponds (i.e., low Secc
Page 49 and 50: References - Hopkins, K.D. and E.M.
Page 51 and 52: were programmed for rice production
Page 53 and 54: Table 2. Fish yield (Oreochromis ni
Page 55 and 56: Fishery Unit of the Tono irrigation
Page 57 and 58: stabilized or preferably increasing
Page 59 and 60: The Potential lmpact of Integrated
Page 61 and 62: Comparison of Farming Systems The d
Page 63 and 64: Impact on Natural Resource System C
Page 65 and 66: The Potential Role of Integrated Ma
Page 67 and 68: security implications, at least at
Page 69 and 70: annually by staple food crops would
Page 71 and 72: - Maize Rice Millet Sorghum Cassava
Page 73 and 74: is the case, even if 750,000 t of h
Page 75 and 76: supplemented for particular tasks d
Page 77 and 78: Used for household . . . . . . . .
Page 79 and 80: Informal discussions repeatedly rec
Page 81 and 82: consumed or sold. Unfortunately, th
Page 83 and 84: and to accommodate the very large r
Page 85 and 86: Staples Vegetables and condiments 1
Page 87 and 88: Model A nn-A-I n IVIUUeI D With the
Page 89 and 90: This becomes an option worthy of fu
Page 91 and 92: Ntiamoa-Baidu, Y. 1987. West Africa
Page 93 and 94: Appendix 11. Workshop Program Resea
Page 95 and 96:
Appendix 111. List of Participants
Page 97 and 98:
Participants in the ICLARM/IAB Work
Page 99:
.,. Research for the future develop
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