Revista Bio Ciencias (Jul 2010)

THE EFFECT OF CHEMICAL AND ORGANIC FERTILIZATION ON PHYTOPLANKTON AND FISH PRODUCTION IN CARP (CYPRINIDAE) POLYCULTURE SYSTEM

  • Ponce-Palafox JT,
  • Arredondo-Figueroa JL,
  • Castillo-Vargasmachuca SG,
  • Rodríguez Chávez G,
  • Benítez Valle A,
  • Regalado de Dios MA,
  • Medina Carrillo F,
  • Navarro Villalobos R,
  • Gómez Gurrola JA,
  • López Lugo P

Journal volume & issue
Vol. 1, no. 1
pp. 44 – 50

Abstract

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This study reports the effects of sheep and pig liquid manure, and chemical fertilizer on the phytoplankton, primary productivity and aquaculture production in the cultivation of carp in semi-rustic ponds. The total yield was 4.632 kg in two hectares. Treatment with chemical fertilizers was found to present the highest yield with 10.06 ± 0.67 (kg/Ha/day), followed by treatment with pig manure (8.27 ± 1.24 kg/Ha/day) and sheep manure (6.33 ± 1.95 kg/Ha/day). It was also found that concentrations of phytoplankton were significantly (p <0.05) higher in ponds fertilized with sheep and pig manure (945.940 and 1,157,706 cells/ml, respectively) than in ponds where chemical fertilizer was used (744.560 cells/ml). In general, conditions were adequate to obtain high yields without commercial feed, thus organic fertilizer application can be recommended because of its availability and low cost.

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