Nitrogen input, primary productivity and fish yield in fertilized freshwater ponds in Indonesia

Knud-Hansen, Christopher F.; Batterson, Ted R.; McNabb, Clarence D.; Harahat, Irwan S.; Sumantadinata, Komar; Eidman, H. Muhammed

doi:10.1016/0044-8486(91)90128-t

Cited by 48 publications

(18 citation statements)

References 29 publications

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“…Average N/P-ratios were 15.2 and 6.4 in ponds without and with manure, respectively. N:P-ratios below 7 generally indicate N limitation (Knud-Hansen et al 1991). However, manure encouraged Cyanobacteria development that can assimilate dissolved atmospheric nitrogen (Bíro 1995).…”

Section: Discussionmentioning

confidence: 99%

Increasing fish production from wetlands at Lake Victoria, Uganda using organically manured seasonal wetland fish ponds

Kaggwa

Dam

Balirwa

et al. 2008

Wetlands Ecol Manage

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The processes driving primary productivity and its impacts on fish production were investigated in field trials in eight seasonal earthen wetland ponds 'Fingerponds' (192 m 2 ) in Uganda between 2003 and 2005. The ponds were stocked by the seasonal flood with predominantly Oreochromis spp. at densities ranging from 0.1 to 0.5 fish m -2 . Chicken manure (521, 833 or 1,563 kg ha -1 ) was applied fortnightly. Results showed that primary productivity was enhanced with maximum average net primary productivity (±Standard Error) of 11.7 (±2.5) g O 2 m -2 day -1 at the Gaba site and 8.3 (±1.5) g O 2 m -2 day -1 at the Walukuba site. Net fish yields were higher in manured ponds with up to 2,670 kg ha -1 yield for a 310 day growth period compared to less than 700 kg ha -1 in unmanured ponds. Fish production was limited mainly by high recruitment, falling water levels, light limitation from high suspended solids and turbidity, and low zooplankton biomass. It was concluded that Fingerponds have a high potential for sustainable fish production and can contribute to the alleviation of protein shortages amongst the riparian communities around Lake Victoria. Production can be enhanced further with improved stock management.

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Section: Discussionmentioning

confidence: 99%

Increasing fish production from wetlands at Lake Victoria, Uganda using organically manured seasonal wetland fish ponds

Kaggwa

Dam

Balirwa

et al. 2008

Wetlands Ecol Manage

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“…Higher weight gain of carp in PM compared with CD in all trials can be explained by the significantly higher abundance of zooplankton (P < 0.05) in the PM treatment; this is in agreement with earlier findings (Singh and Sharma, 1999; Jha et al., 2004). PM is preferred in aquaculture because of its high level of nitrogen and phosphorus concentrations (Knud‐Hansen et al., 1991). Although phosphorus was not analysed in this study, total nitrogen in PM was higher than in CD.…”

Section: Discussionmentioning

confidence: 99%

Comparative effect of live food and manured treatments on water quality and production of ornamental carp, Cyprinus carpio var. koi L., during winter, summer, monsoon and post-monsoon growout experiments in concrete tanks

Jha

Barat

Sarkar³

2007

J Appl Ichthyol

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Four growth trials (each of 11 weeks duration) were conducted during different seasons throughout 1 year, namely, winter, summer, monsoon and post-monsoon to assess the seasonal influence on growth and production of koi carp, Cyprinus carpio var. koi L. larvae in concrete tanks maintained under different management regimes. Individual weight gain, survival rate, fish deformities and number of marketable fish in each season were compared among four management regimes: (i) carp larvae fed with live zooplankton (LF); (ii) direct fertilization with poultry manure (PM); (iii) direct fertilization with cow dung (CD); and (iv) a control system (C), where a commercial diet containing 32% crude protein was applied. There were three replicates for each treatment. The LF treatment produced significantly higher weight gain, survival rate and number of marketable fish in all seasons (P < 0.05), compared with the other treatments, through maintenance of better water quality and greater abundance of zooplankton in the system. Fish deformities were highest in the C treatment in every season (P < 0.05). Water temperatures averaged 18.6°C (winter), 29.7°C (summer), 28.3°C (monsoon), and 26.5°C in the post-monsoon trial. Average weight gain of koi carp achieved during the winter trial (2.01 g in C to 4.44 g in LF) was considerably lower than that achieved in the summer, monsoon or post-monsoon trials. Survival rates of carp ranged from 70.5% (C) to 95.5% (LF) in the winter trial, and were considerably lower than the other seasons. The number of marketable fish was also lowest during the winter trial.

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“…L'évolution des valeurs des sels nutritifs dissous est représentée à la Knud-Hansen et al (1991) qui ont montré que la fiente est le meilleur fertilisant organique à cause de sa solubilité plus rapide et de sa plus forte richesse en phosphore. La différence non significative entre la capacité de minéralisation et le taux de sels minéraux libérés entre l'azolla et la bouse de vache résulterait de la composition de la bouse qui ne diffère pas fondamentalement de celle de l'azolla ; car la bouse de vache n'est que le reste de fourrages digérés par les boeufs.…”

Section: Variations Des Sels Minéraux Libérés Dans Les Bacsunclassified

Libération comparée de sels dans l’eau par la minéralisation de l’azolla, la bouse de vache, la fiente de volaille et les sons de riz et de maïs utilisés en pisciculture

Agadjihouèdé¹,

Montchowui²,

Chikou³

et al. 2012

Int. J. Bio. Chem. Sci

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Nitrogen input, primary productivity and fish yield in fertilized freshwater ponds in Indonesia

Cited by 48 publications

References 29 publications

Increasing fish production from wetlands at Lake Victoria, Uganda using organically manured seasonal wetland fish ponds

Increasing fish production from wetlands at Lake Victoria, Uganda using organically manured seasonal wetland fish ponds

Comparative effect of live food and manured treatments on water quality and production of ornamental carp, Cyprinus carpio var. koi L., during winter, summer, monsoon and post-monsoon growout experiments in concrete tanks

Libération comparée de sels dans l’eau par la minéralisation de l’azolla, la bouse de vache, la fiente de volaille et les sons de riz et de maïs utilisés en pisciculture

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