290 likes | 339 Views
Learn about the history, advantages, and selection of suitable rice fields for rice-fish culture, along with fish species selection, stocking density, and post-stocking management. Discover the potential of rice-fish farming in alleviating poverty and ensuring food security.
E N D
YeshwantraoChavanMahavidyalaya, Tuljapur, Dist.-Osmanabad-413 601 (MH), INDIA Department of Fishery Science Dr S L Bhalkare Head and Assistant prof.
B.Sc. Second Year Semester IV Paper –Fish Culture II Topic: Paddy Fish Culture
What is a rice-fishsystem? A rice-fish system is an integrated rice field or rice field/pond complex, where fish are grown concurrently or alternately withrice. 3
History • History of Rice-Fish culture is quiteold. • First started in ancient China about 2000 years ago. 4
Smallditches Attractwildfishes Fry of Carpio Low Production 50 kg perhectare Traditional system 5
Production of fish as additional crop. Insect or pest controlled Fecal or semi-fecal materials serve as fertilizer More profitable than rice cultivationalone. Easy technology and low cost involvement.. Great acceptability especially to the ruralpeople. Advantage 6
Maintaining suitable water level forfish culture Fish might escape or die due to floods or disease. Theft offish. Predators such as snake, frog, kite may eat fish. Restricted pesticide use in control ofpests Disadvantages 7
Concurrent system- Rice and fish are cultured simultaneously Alternate system– Fish is cultured after harvesting ofrice. Rice-Fish Culture Systems 8
Selection of Suitable RiceField • 4-5” of water for at least 3-4months • Sticky and loamysoil • Close tohome • High dykes
Top3.5-4inchesofsoilisused for cultivation Field preparation for riceplanting: of3-5 • Ploughandladdering times is enough • Thick andmuddy/clayish Fig: Rice fieldpreparation
Field preparation for riceplanting: Fig: Applying fertilizer to thefield
• BR 11(Mukta) • • BR 14(Gazi) • • BR- 3(Biplob) • • BR- 16 (ShahiBalam) • • BR- 20(Nijami) • • BR- 20(Rohmat) • • BR- 26(Srabinee) • • • BR-27 • • • BR-28 • • • BR-29 • • • BR-32 • • BR- 33etc. High-yielding ricevariety
Firstly: To keep the soil and water pH suitable for fish and to keep the water hardness more than 20mg/liter. Secondly: To prevent infestation by parasites andgerms Liming
Fast growingspecies • Can survive in shallowwater • Can withstand temperature and environmental fluctuation • Can be managed easily, such as, Tilapia, Common Carp, Ruhi, Mrigel, Thai Sorpunti and Batafish. • It can be mono or poly culture in rice field. Suitable FishSpecies
White fish (small plant or plankton eating species) suchas • Danios, Barbs(Puntius), • Black fish (often carnivorous air breathers that cansurvive low or no oxygen levels) such as Snakehead (Channa), Catfish (Clarias), Climbing Perch (Anabas), Spiny eels (Mastacembelus), and Sheatfish(Ompok). • Introduced exotic fish species such as CommonCarp (Cyprinus), Tilapia (Oreochromis), and Silver carp (Hypophthalmichthys). Speciesselection
Stocking time • Right after transplant of riceseedling • Minimum of 4-5 inches ofwater
Feed and FertilizerManagement • Rice bran, wheat bran, duckweed,Agolla • 2-3% of total fishbiomass • Mustard oilcake : rice bran =1:2 • Fertilizer Post Stocking Management
Since 90s, several NGOs worked on Rice-Fish cultureand both nursery and table fish are producing through this technique. • Major fish species used are Labeo rohita(Rui), Catlacatla (Catla), Cirrhina mrigala (Mrigel),Cyprinus carpio (Common and Mirror carp),Hypophthalmichthys motitrix (Silver carp), Tilapia sp.(Tilapia), Thai barb (Puntius gonionotus). • Production is much higher than traditional system whichis about 200kg/ha. Recent Development inBangladesh
Offers tremendous potential for food security and poverty alleviation in ruralareas. • Government should give more emphasize on thissector. • Applied research in areas such as small indigenous fish farming in rice fields need to be given particularattention. • Research required on social, economic, environmental, and livelihood issues for the adoption of rice-fish farming in rural Bangladesh. Conclusion