scholarly journals Partially treated domestic wastewater as a nutrient source for tomatoes (Lycopersicum solanum) grown in a hydroponic system: effect on nutrient absorption and yield

Heliyon ◽  
2020 ◽  
Vol 6 (12) ◽  
pp. e05745
Author(s):  
Shirly Tentile Magwaza ◽  
Lembe Samukelo Magwaza ◽  
Alfred Oduor Odindo ◽  
Asanda Mditshwa ◽  
Christopher Buckley
Keyword(s):  
Domestic Wastewater ◽  
Nutrient Absorption ◽  
Nutrient Source ◽  
System Effect ◽  
Hydroponic System

Effect of Composition of an Improved Nutrient Solution for a Closed Hydroponic System on Nutrient Absorption by Tomatoes

2007 ◽  
Vol 6 (3) ◽  
pp. 391-397 ◽  
Author(s):  
Yoshiyuki Ishihara ◽  
Hideyasu Hitomi ◽  
Yoshikazu Yamaki
Keyword(s):  
Nutrient Solution ◽  
Nutrient Absorption ◽  
Hydroponic System

scholarly journals Evaluation of vitamin C, nitrate and chlorophyll content determined in lettuce (Thaís, Vanda, Verônica) cultivated in hydroponic system using wastewater

2019 ◽  
pp. 934-943
Author(s):  
Josilda de França Xavier ◽  
Carlos Alberto Vieira de Azevedo ◽  
Márcia Rejane de Queiroz Almeida Azevedo ◽  
Jacqueline da Silva Mendes ◽  
Josely Dantas Fernandes ◽  
...  
Keyword(s):  
Experimental Design ◽  
Laminar Flow ◽  
Vitamin C ◽  
Chlorophyll Content ◽  
Domestic Wastewater ◽  
Well Water ◽  
Chlorophyll B ◽  
Hydroponic System ◽  
Iceberg Lettuce ◽  
Set Up

The objective of this work was to determine the levels of vitamin C, nitrate and chlorophyll in three lettuce cultivars in a hydroponic system using waste- and well-water. The experiment was conducted in a hydroponic system using laminar flow technique and nutrients in a protected environment. The experimental design was randomized blocks with treatments set up in split-plots with three replications, whose main plots devoted to lettuce cultivars and sub-plots to hydroponic solutions. The experimental solutions consisted of 7 nutrients (S): S1=Furlani solution, S2=domestic wastewater, S3=optimized domestic wastewater, S4 =well water S5 =optimized well water; S6 = reactor wastewater solution and S7 =optimized reactor wastewater solution and the subplot for the three cultivars of iceberg lettuce (Verônica, Vanda, and Thais). The following variables were determined: nitrate, vitamin C and chlorophyll content using the method described by Lichtenthaler. The results indicated that highest content of vitamin C was found in the Vanda cultivar using the S1 solution. For Veronica cultivar, the highest levels of vitamin C were observed at solutions S1, S2, S3, S4, and S7. The solutions S2 and S3 did not differ from one another in all three cultivars. For the Vanda cultivar, solutions S1, S4 and S7 were the ones that promoted the highest levels of nitrate, 4.61; 3, 32 and 2.64 g kg-1, respectively. Evaluating the effect of the solution within the cultivars, we verified that the highest nitrate values obtained from S2 nutrition for cultivars Thais and Verônica. Regarding the S5 solution, the Verônica cultivar presented the highest concentration of this nutrient. The cultivate Thaís, the highest contents of chlorophyll b were found in solutions S7, S6, S4, S3 and S2, where they did not differ significantly. Regarding to Vanda cultivar the highest values of chlorophyll b were present in solutions S2 and S5. The Verônica cultivar independent of the solution used presented the same values of this pigment.

scholarly journals Influence of the use of wastewater on nutrient absorption and production of lettuce grown in a hydroponic system

2018 ◽  
Vol 203 ◽  
pp. 311-321 ◽  
Author(s):  
Renata da Silva Cuba Carvalho ◽  
Reinaldo Gaspar Bastos ◽  
Claudinei Fonseca Souza
Keyword(s):  
Nutrient Absorption ◽  
Hydroponic System

scholarly journals Removal of Pathogens from Domestic Wastewater Using Small-Scale Gradual Hydroponics Planted with Duranta erecta, Addis Ababa, Ethiopia

2022 ◽  
Vol 2022 ◽  
pp. 1-9
Author(s):  
Solomon Tibebu ◽  
Abebe Worku ◽  
Kenatu Angassa
Keyword(s):  
Heterotrophic Bacteria ◽  
Addis Ababa ◽  
Control Unit ◽  
Domestic Wastewater ◽  
Experimental Unit ◽  
Small Scale ◽  
Hydroponic System ◽  
Control Units ◽  
Significant Difference ◽  
And Control

This study aimed to evaluate the treatment potential of gradual hydroponics planted with Duranta erecta in the removal of pathogens from domestic wastewater. Two experimental and control units were configured in series. Each unit contains three bioreactors and was arranged in a cascaded configuration. The two experimental units used both plant and media, but the two control units used only media to treat the wastewater. Gravel and polyester sponge were used as media. Experimental unit 1 and control unit 1 used gravel as media; however, experimental unit 2 and control unit 2 used polyester sponges as media. The experiment was operated at hydraulic retention times of 1, 3, 5, and 7 days in a continuous mode. The performance of the hydroponic system was evaluated by characterizing the influent and effluent quality using standard methods. At optimum hydraulic retention time (7 days), the average removal of experimental units 1 and 2 was 98.7% and 89.8% for heterotrophic bacteria, 96.2% and 86.8% for total coliform, and 92.9% and 84.0% for fecal coliform, respectively. Analysis of variance showed that there was a significant difference P < 0.05 between the two experimental and control units in removing pathogens, but no significant difference P > 0.05 was observed between the two experimental units and between the two control units. Heterotrophic bacteria and coliforms were satisfactorily removed from domestic wastewater via a gradual hydroponic system. Hence, the hydroponic treatment system planted with Duranta erecta has a promising potential in the removal of pathogens from domestic wastewater in developing countries including Ethiopia.

scholarly journals Mineral Composition of Lettuce Grown in Hydroponic System With Wastewater

2018 ◽  
Vol 10 (7) ◽  
pp. 317
Author(s):  
Josilda de França Xavier ◽  
Carlos Alberto Vieira de Azevedo ◽  
Marcia Rejane de Q. A. Azevedo ◽  
José Emídio de Albuquerque Junior ◽  
João Paulo de Oliveira Simões
Keyword(s):  
Mineral Composition ◽  
Nutrient Solution ◽  
Domestic Wastewater ◽  
Mineral Fertilizers ◽  
Well Water ◽  
Hydroponic System ◽  
Treated Effluents ◽  
Nutrient Solutions

The use of treated effluents is not a new practice in agriculture, however, the optimization of wastewater was given with mineral fertilizers to grow lettuce in a hydroponic system, subject that is still barely studied. The objective of this study was to evaluate the mineral composition of three lettuce cultivars (Verônica, Vanda and Thais) in a hydroponic system using wastewater, well water and optimized nutrient solutions. The plants was grown in seven nutrient solutions, as S1 = Furlani solution; S2 = domestic wastewater; S3 = optimized domestic wastewater; S4 = well water; S5 = optimized well water; S6 = wastewater UASB and S7 = optimized UASB wastewater and the sub-plot for three lettuce cultivars. It was verified that the treatments S2, S4 and S6 when compared with the respective optimized solutions S3, S5 and S7 presented lower levels of nitrogen, potassium, calcium, zinc, copper and manganese in the two experiments. Same behavior was not observed for phosphorus and sodium. As for the cultivars, they presented, regardless of the experiment, mineral composition similar to each other when the same nutrient solution was used.

scholarly journals Effect of Low pH on the Growth, Physiological Characteristics and Nutrient Absorption of Sago Palm in a Hydroponic System

2012 ◽  
Vol 15 (2) ◽  
pp. 125-131 ◽  
Author(s):  
Ornprapa Anugoolprasert ◽  
Shina Kinoshita ◽  
Hitoshi Naito ◽  
Masafumi Shimizu ◽  
Hiroshi Ehara
Keyword(s):  
Low Ph ◽  
Nutrient Absorption ◽  
Physiological Characteristics ◽  
Hydroponic System ◽  
Sago Palm

scholarly journals CHLOROPHYLL FLUORESCENCE OF BASIL PLANTS CULTIVATED IN A HYDROPONIC SYSTEM USING TREATED DOMESTIC WASTEWATER

2019 ◽  
Vol 39 (3) ◽  
pp. 288-293
Author(s):  
Karoline S. Gonçalves ◽  
Lucylia S. Alves ◽  
Vital P. da S. Paz ◽  
Samir de S. Bandeira
Keyword(s):  
Chlorophyll Fluorescence ◽  
Domestic Wastewater ◽  
Hydroponic System

scholarly journals Application of wastewater for production of lettuce (Lactuca sativa) in hydroponic system

2019 ◽  
pp. 1586-1593
Author(s):  
Josilda France Xavier ◽  
Carlos Alberto Vieira de Azevedo ◽  
Marcia Rejane de Queiroz Almeida Azevedo ◽  
Josely Fernandes Dantas ◽  
Antônio Fernandes Monteiro Filho ◽  
...  
Keyword(s):  
Domestic Wastewater ◽  
Uasb Reactor ◽  
Well Water ◽  
Total Production ◽  
Agronomic Performance ◽  
Hydroponic System ◽  
Nutritive Solution ◽  
Water Well ◽  
Number Of Leaves ◽  
Optimum Water

The study aimed to evaluate the agronomic performance of three varieties of lettuce subjected to different treatments of wastewater. The experimental design was a randomized block in a 7 x 3 split-plot with three replicates. The factors were 7 hydroponic and 3 cultivars of crisp lettuce. The solutions were formulated and optimized by considering Furlani solution as reference nutrient. The experimental portion consisted of the nutritive solutions (S). S1 = Furlani solution; S2 = domestic wastewater; S3 = optimized domestic wastewater; S4 = well water; = S5 optimized well water; S6 = wastewater from the UASB reactor and S7 = wastewater optimized from the UASB reactor, the subplot was constituted of three lettuce cultivars (Verônica, Vanda and Thais). The results showed that solutions with domestic wastewater (S2), optimized domestic wastewater (S3), optimized well water (S5) and the solution wastewater from the UASB reactor (S6) promoted the highest number of leaves per plant for the three cultivars. Solutions with enhanced domestic wastewater (S3), optimum water well (S5) and the solution formulated from the wastewater from the UASB reactor (S6) promoted the highest stem diameter in three cultivars. The highest value of total production was obtained from Vanda cultivar, when the wastewater from the UASB reactor (S6) was used as nutritive solution.

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