PRODUCTION PERFORMANCE OF FISH IN RICE FIELDS WITH INORGANIC FERTILIZATION | ||||
| Journal of Animal and Poultry Production | ||||
| Article 2, Volume 29, Issue 10, October 2004, Page 5549-5565 PDF (4 MB) | ||||
| Document Type: Original Article | ||||
| DOI: 10.21608/jappmu.2004.239419 | ||||
 View on SCiNiTO | ||||
| Authors | ||||
| A. Z. M. Soliman,1; G. M. Abdul-Aziz1; Fatma A. Hafez2; H. A. Abdel-Ghany2 | ||||
| 1Animal Production Dept., Fac. Agric., Cairo University. | ||||
| 2Central Laboratory of Aquaculture Research. | ||||
| Abstract | ||||
| This experiment was conducted to study the mutual effect between fish and rice in rice fields with inorganic fertilizers. Three different polycultures, P1 (Nile tilapia + crayfish), P2 (common carp + crayfish) and P3 (Tilapia + carp + crayfish) were studied with T1 (urea), T2 (superphosphate), T3 (urea + superphosphate), T4 (without fertilizers). Meanwhile, a rice field free from fish was used to compare rice yield in the experimental treatments. The results showed that water quality measurements were within the normal ranges and suitable for the experimental fishes. Urea + superphosphate treatment gave the types of phytoplankton and zooplankton needed by fishes and consequently gave the highest growth performance of carp and crayfish polyculture. The whole body composition of tilapia and carp had no clear trend in the different polycultures or treatments while crayfish was not affected. The rice yield increased by 9-13% when applying urea + superphosphate while the highest net return was obtained with superphosphate alone in carp-crayfish polyculture. It could be recommended to raise common crap along with crayfish in rice fields fertilized with urea + superphosphate. If urea is high in price or unavailable, superphosphate alone is recommended. This system of production increases the net return of small farmers under similar conditions by increasing the rice yield beside the fish yield. | ||||
| Keywords | ||||
| fish; polyculture; rice and inorganic fertilizers | ||||
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