The effect of Elodea densa on aquaculture water quality

Ng, W.J.; Sim, Timothy; Ong, Say Leong; Kho, Kevin; Ho, Lin-Tai; Tay, S.H.; Goh, C.C.

doi:10.1016/0044-8486(90)90092-2

Cited by 14 publications

(16 citation statements)

References 6 publications

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“…Crossley [21] reported that in Aponogeton elongatus aquaria steady increase in water pH up to the end of experiment. High pH was also found by Ng et al [22] in the tanks containing Elodea densa.…”

Section: Results Discussion and Conclusionsupporting

confidence: 64%

“…Ng et al [22] reported low total hardness due to Elodea densa. Watten and Busch [26] reported low hardness in hydroponics system.…”

Section: Results Discussion and Conclusionmentioning

confidence: 99%

“…The range of total alkalinity was 38 -56 mgL -1 and highest value was observed in poultry manure. Ng et al [22] reported increased in total alkalinity in Elodea densa tanks.…”

Section: Results Discussion and Conclusionmentioning

confidence: 99%

“…Govind et al [23] observed differences in specific conductivity of ponds treated with different organic manures. Ng et al [22] reported that specific conductivity of water decreased due to ornamental aquatic plant, Elodea densa. In this study, specific conductivity increased initially but gradual decreased after second week onwards in all types of manures whereas, control did not show variation in specific conductivity of water.…”

Section: Results Discussion and Conclusionmentioning

confidence: 99%

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Effect of Different Organic Manures on the Growth of Screw Vallisneria, Vallisneria spiralis Linne 1753

GS¹,

HD²

2012

J Aquac Res Development

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The aim of this study is to determine the role of different organic manures viz. raw cattle dung, poultry waste and vermicompost on the growth of V. spiralis in the container in open and shadow environmental condition.Experiment was conducted to study the role of different organic manures viz. cattle manure, poultry manure and vermicompost on the growth of V. spiralis in 100 g capacity pot for 28 days. All the manures were applied at the rate of 2 g pot -1 . Significant difference was not found among the treatments for water parameters, while significant difference was observed for nutrients of soil. Plastic pools manured with poultry and cattle manure did not show significant difference for final biomass, total length, number of leaf and runners of V. spiralis.It was concluded that the application of cattle manure with soil increase biomass, total length and produced good leaf quality of V. spiralis.

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Section: Results Discussion and Conclusionsupporting

confidence: 64%

“…Ng et al [22] reported low total hardness due to Elodea densa. Watten and Busch [26] reported low hardness in hydroponics system.…”

Section: Results Discussion and Conclusionmentioning

confidence: 99%

“…The range of total alkalinity was 38 -56 mgL -1 and highest value was observed in poultry manure. Ng et al [22] reported increased in total alkalinity in Elodea densa tanks.…”

Section: Results Discussion and Conclusionmentioning

confidence: 99%

Section: Results Discussion and Conclusionmentioning

confidence: 99%

See 2 more Smart Citations

Effect of Different Organic Manures on the Growth of Screw Vallisneria, Vallisneria spiralis Linne 1753

GS¹,

HD²

2012

J Aquac Res Development

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“…This is also true in case of submerged aquatic plants where light and concentrations of inorganic carbon are limiting factors. At the same time, influx of urea into water bodies is reported to change the water quality and the species composition of the population (Azizullah et al 2011;Gonzalez andPlamondon 1976-1977;Ng et al 1990). It is known that high doses of urea and its concomitant hydrolyzed products such as ammonia are implicated in physiological disturbances and loss of productivity of higher plants, bringing changes in dominant species in plant communities (Usenko et al 2000).…”

Section: Introductionmentioning

confidence: 99%

Influence of exogenous urea on photosynthetic pigments, 14CO2 uptake, and urease activity in Elodea densa—environmental implications

Maleva

Borisova

Чукина

et al. 2013

Environ Sci Pollut Res

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This paper analyzes the effect of exogenous urea in increased concentration gradient (0, 100, 500 and 1,000 mg L −1 ) on photosynthetic pigments (measured spectrophotometrically), uptake of 14 CO 2 (using radioisotope), and urease activity (by measuring ammonia with Nessler's reagent) in leaves of Elodea densa Planch. We have observed that low concentration of urea (100 mg L −1 ) stimulates the accumulation of photosynthetic pigments and intensifies photosynthesis in E. densa, whereas high concentration (1,000 mg L −1 ) suppresses these processes. Urease activity increased by approximately 2.7 and 8 fold when exogenous urea concentrations were 100 and 500 mg L −1 , respectively. However, exogenous urea in high concentration (1,000 mg L −1 ) decreased urease activity by 1.5 fold compared to the control. The necessity of mitigating urea and other nitrogen-containing compounds (NH 3 from urea) in water bodies has been discussed with emphasis on the potential for phytoremediation of urea using common water weed viz. E. densa.

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A primer on potential impacts, management priorities, and future directions for Elodea spp. in high latitude systems: learning from the Alaskan experience

et al. 2016

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The effect of Elodea densa on aquaculture water quality

Cited by 14 publications

References 6 publications

Effect of Different Organic Manures on the Growth of Screw Vallisneria, Vallisneria spiralis Linne 1753

Effect of Different Organic Manures on the Growth of Screw Vallisneria, Vallisneria spiralis Linne 1753

Influence of exogenous urea on photosynthetic pigments, 14CO2 uptake, and urease activity in Elodea densa—environmental implications

A primer on potential impacts, management priorities, and future directions for Elodea spp. in high latitude systems: learning from the Alaskan experience

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