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Performance evaluation of concurrent rice-fish-prawn culture with and without cull harvesting

2009; Wiley; Volume: 41; Issue: 9 Linguagem: Inglês

10.1111/j.1365-2109.2009.02432.x

1365-2109

Rajeeb K. Mohanty, A. K. Thakur, Souvik Ghosh, Silabhadra Mohanty, Dhiraj U. Patil,

Innovations in Aquaponics and Hydroponics Systems

Aquaculture ResearchVolume 41, Issue 9 p. 1402-1412 Performance evaluation of concurrent rice–fish–prawn culture with and without cull harvesting Rajeeb K Mohanty, Rajeeb K Mohanty Directorate of Water Management, Indian Council of Agricultural Research, Chandrasekharpur, Bhubaneswar, Orissa, IndiaSearch for more papers by this authorAmod K Thakur, Amod K Thakur Directorate of Water Management, Indian Council of Agricultural Research, Chandrasekharpur, Bhubaneswar, Orissa, IndiaSearch for more papers by this authorSouvik Ghosh, Souvik Ghosh Directorate of Water Management, Indian Council of Agricultural Research, Chandrasekharpur, Bhubaneswar, Orissa, IndiaSearch for more papers by this authorSilabhadra Mohanty, Silabhadra Mohanty Directorate of Water Management, Indian Council of Agricultural Research, Chandrasekharpur, Bhubaneswar, Orissa, IndiaSearch for more papers by this authorDhiraj U Patil, Dhiraj U Patil Directorate of Water Management, Indian Council of Agricultural Research, Chandrasekharpur, Bhubaneswar, Orissa, IndiaSearch for more papers by this author Rajeeb K Mohanty, Rajeeb K Mohanty Directorate of Water Management, Indian Council of Agricultural Research, Chandrasekharpur, Bhubaneswar, Orissa, IndiaSearch for more papers by this authorAmod K Thakur, Amod K Thakur Directorate of Water Management, Indian Council of Agricultural Research, Chandrasekharpur, Bhubaneswar, Orissa, IndiaSearch for more papers by this authorSouvik Ghosh, Souvik Ghosh Directorate of Water Management, Indian Council of Agricultural Research, Chandrasekharpur, Bhubaneswar, Orissa, IndiaSearch for more papers by this authorSilabhadra Mohanty, Silabhadra Mohanty Directorate of Water Management, Indian Council of Agricultural Research, Chandrasekharpur, Bhubaneswar, Orissa, IndiaSearch for more papers by this authorDhiraj U Patil, Dhiraj U Patil Directorate of Water Management, Indian Council of Agricultural Research, Chandrasekharpur, Bhubaneswar, Orissa, IndiaSearch for more papers by this author First published: 19 August 2010 https://doi.org/10.1111/j.1365-2109.2009.02432.xCitations: 7 Correspondence: R K Mohanty, Directorate of Water Management, Indian Council of Agricultural Research, Chandrasekharpur, Bhubaneswar, Orissa 751 023, India. E-mail: rajeebm@yahoo.com Read the full textAboutPDF ToolsRequest permissionExport citationAdd to favoritesTrack citation ShareShare Give accessShare full text accessShare full-text accessPlease review our Terms and Conditions of Use and check box below to share full-text version of article.I have read and accept the Wiley Online Library Terms and Conditions of UseShareable LinkUse the link below to share a full-text version of this article with your friends and colleagues. Learn more.Copy URL Share a linkShare onFacebookTwitterLinked InRedditWechat Abstract This study was carried out in farmers' fields for three experimental culture cycles to evaluate the performance of rice–fish–prawn culture. The treatments carried out were deepwater rice mono-cropping (R), and rice–fish–prawn culture with cull harvesting (R–FC) and without cull harvesting (R–F). Water pH and total alkalinity were significantly higher (P<0.05) in R–FC than in R–F, while the concentrations of total suspended solids, plankton and chlorophyll a were higher in R–F. Cull harvesting in R–FC had no marked influence on the concentrations of dissolved oxygen, NH4+, nitrite, nitrate and phosphate compared with the R–F treatment. The significantly higher fish and prawn yields (P<0.05) and species-wise faster individual growth performance in R–FC than in R–F were probably due to periodic cull harvesting, which minimized the competition for food and space as well as physiological stress at reduced density. The paddy yield and percentage increase in paddy yield over rice mono-crop was significantly higher (P<0.05) in R–FC (25%), followed by R–F (16.9%), probably due to lower chlorophyll a (36.7 mg m−3) and plankton density (1.4 × 104 L−1), which minimized the competition for nutrients with rice plants. The highest rice equivalent yield (38.5), output value–cultivation cost ratio (1.56) and enhanced net return (28%) in deepwater rice–fish culture were recorded when cull harvesting was practiced. Citing Literature Volume41, Issue9August 2010Pages 1402-1412 RelatedInformation