Fertilization of Earth Ponds. I: Effects on Physico-Chemical Characteristics and Eutrophication of Pond Water and Soil

Wade, J.W.; Stirling, Hadrian P.

doi:10.4314/jas.v14i1.19966

Cited by 3 publications

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“…This high value of crude protein recorded in the present study can be referred to the addition of organic manure. Organic manure, which includes detritus, has been reported to be a rich source of nutrients (Wade and Stirling, 1999b). The values obtained from the levels 4:1 and 8:1 were approximately the same.…”

Section: The Best Nitrogen/ Phosphorus (N/p) Ratiosupporting

confidence: 51%

Nutrient Optimization for the Production of Microbial Flocs in Suspended Growth Bioreactors = تحديد أفضلية المغذيات لإنتاج التجمعات الميكروبية في المفاعلات الحيوية

Hussain¹,

Mohammad²,

Ali³

2014

JAAS

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Four successive experiments were carried out to determine the best combination of nutrients that could be added to sea water to enhance microbes to produce biofloc. In the first experiment, four levels of Nitrogen/ Phosphorus (N/P) ratio were tried with two sets of treatments for the four levels; with and without chicken manure. The level 4:1 from the second treatment was significantly (P <0.001) higher in dry weight (DW) and crude protein (CP) than the others. The second experiment aimed to using five levels of carbon/ nitrogen (C/N) ratios. The level (16:1) differed significantly, it was the highest in DW but its CP was slightly lower (P <0.001). This level was used in the third experiment with different carbon sources. The obtained DW from the rice meal was slightly higher, in contrast, the CP of the corn meal was the highest (P <0.001). In the fourth experiment a larger scale production of biofloc units using the best carbon source were used in different water sources. DW and CP of the biofloc for both trials were weakly significant (P <0.526). The nutritional composition of microbial flocs produced showed that CP was the highest component (39%). The study suggested that microbial protein could replace fishmeal or other protein sources in fish and shrimp feeding due to its good nutritional value and appropriate aminoacid profile which make it suitable for feeding omnivorous cultured species.

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Section: The Best Nitrogen/ Phosphorus (N/p) Ratiosupporting

confidence: 51%

Nutrient Optimization for the Production of Microbial Flocs in Suspended Growth Bioreactors = تحديد أفضلية المغذيات لإنتاج التجمعات الميكروبية في المفاعلات الحيوية

Hussain¹,

Mohammad²,

Ali³

2014

JAAS

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“…For the inorganic fertilization, replicate ponds were treated with low and high phosphorus, high phosphorus and nitrogen, while the organic fertilization replicate treatments were low and high chicken manure and combination of high and cow manure. Each of fertilization programs had 2 untreated controls, without fertilizer.All the inorganic treatments produced significantly more Bacillariophyceae (diatoms), Chlorophyceae (green algae) and Cyanophyceae (blue -green algae) than the untreated controls, but high phosphorus and nitrogen produced vastly more algae than the others (Wade & Stirling, 1999).The specific growth rate of the common carp fish was significantly increased by increases in the level of natural food. The data also indicate that some fish drive a high proportion of their food from plankton organisms, rather from supplement feed.…”

Section: Introductionmentioning

confidence: 97%

Effect of Different Husbandry Methods on Freshwater Fishes

Elnady¹,

M,G.²,

Hafez³

et al. 2001

Egypt. J. of Aquatic Biolo. and Fish.

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T his study was conducted jointly at the Central Laboratory for Aquaculture Research (CLAR) and Faculty of Agriculture, Cairo University. The experiment included six treatments. The first treatment included the application of supplemental diet (17% CP), The second treatment included the application of complete diet (25% CP). Both diets were administrated at a rate of 3% of fish body weight per day. The third treatment included a biweekly application of nitrate and triple super phosphate(ammonium nitrate 33% N and TSP 37% P205) at high dose at a rate of 10.61 and 4.72 kg/pond, respectively. The fourth treatment included a biweekly application at a medium dose at a rate of 53 and 2.36 kg/pond. The fifth treatment included a biweekly application at a low dose at rate of 2.65 and 1.18 kg/pond. The sixth treatment was considered as a control treatment with no addition of nutritional or fertilizer inputs.Water temperature in the experimental ponds was below the thermal requirements offish for optimal growth during winter season and of medium magnitude during fall and spring and close to the optimal thermal range for growth during summer season.Water in experimental ponds was characterized by high alkalinity (263.11 -490.0 mg/1), high hardness (180.79 -339.16 mg/1) and high pH values (8.58-9.8) among treatments during the course of the experiment. 296Mohamed A. El-Nady et al\ Dissolved oxygen under the experiment was within the optimal level for growth of cultivated fishes. The overall average of total ammonia concentration in pond water during the experimental period indicated that high dietary protein treatment had an over abundance of ammonia (1.32 mg/1) followed by the high (0.78 mg/l),medium(0.52 mg/J) and low (0.40 mg/1) fertilizer treatments, respectively. The shallow Secchi disk readings during summer season in the high dietary protein treatment was due to the effect of overabundance of ammonia in water on algae growth enhancement rather than nitrate effect.Nitrate (N03-N) content in water increased from 0.14, 0.26 and 0.24 mg/1 during fall at the start of the experiment to 0.23, 0.13 and 0.37 mg/1 during summer season at the end of the experiment for the control, the low dietary protein and the high dietary protein treatments, respectively. Nitrate contents in water in the low, medium and high fertilizer treatments were 0.65, 0,86 and 1.44 mg/1 in summer at the end of the experiment.Chemically fertilized ponds had higher total phosphorus (P<0,05) compared to treatments fed the experimental rations and the control ponds,The results of the present study indicated a super abundance of algae in all fertilizer treatments over that of the ration and control treatments in all seasons. The control treatment had the lowest algae turbidity compared to that of the ration treatments. In contrast to tilapia and common carp, silver carp grew higher in the higher fertilizer treatment compared to the feed treatments. There was a tendency for silver carp to decrease in harvest size with the decrease in fertilizer dose.

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“…Knowledge of hydrological conditions of water body helps assess its productivity as well as a better understanding of the population and life cycle of the fish community [1][2][3]. Effective monitoring of hydrological variables of water bodies has led to the application of manipulations strategies to maximize fish production [4]. This is not surprising because physicochemical characteristics of the aquatic environment directly influence the life inhabiting it [5].…”

Section: Introductionmentioning

confidence: 99%

Wet Season Variations of some Physicochemical Parameters of the Brackish Water farm, Buguma, Niger Delta, Nigeria

Owhonda¹

2015

J Aquac Res Development

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Some physicochemical parameters of Nigerian Institute for Oceanography and Marine Research/African Regional Aquaculture Centre (NIOMR/ARAC) brackish water fish farm; Buguma; Rivers State; Nigeria were monitored twice each month from April to October in 2011 and 2012; covering wet season for both years in the region. The result obtained indicates that for 2011 pH; ammonia-nitrogen; nitrite-nitrogen; nitrate-nitrogen; alkalinity; carbon (iv) oxide; salinity; dissolved oxygen and temperature ranges were between 6.5-7; 0-0.1 ppm; 0.25-0.25 ppm; 40-80 ppm; 5-10 ppm; 9-20 ppt; 3.8-6 ppm and 26-31oC respectively while for 2012 pH; ammonia-nitrogen; nitritenitrogen; nitrate-nitrogen; alkalinity; carbon (iv) oxide; salinity; dissolved oxygen and temperature ranges were between 6.5-7; 0-0.1 ppm; 0.05-0.05 ppm; 0.05-0.25 ppm; 40-80 ppm; 5-10 ppm; 9-20 ppm; 3.8-5.6 ppm; 26-31oC respectively. There were no significant differences (p>0.05) in all parameters for both years and the values measured were within tolerable limits for optimum aquaculture.

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Fertilization of Earth Ponds. I: Effects on Physico-Chemical Characteristics and Eutrophication of Pond Water and Soil

Cited by 3 publications

References 0 publications

Nutrient Optimization for the Production of Microbial Flocs in Suspended Growth Bioreactors = تحديد أفضلية المغذيات لإنتاج التجمعات الميكروبية في المفاعلات الحيوية

Nutrient Optimization for the Production of Microbial Flocs in Suspended Growth Bioreactors = تحديد أفضلية المغذيات لإنتاج التجمعات الميكروبية في المفاعلات الحيوية

Effect of Different Husbandry Methods on Freshwater Fishes

Wet Season Variations of some Physicochemical Parameters of the Brackish Water farm, Buguma, Niger Delta, Nigeria

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