3. Urban agriculture in Dakar, Senegal: Health aspects related to polluted irrigation water

2012 ◽  
pp. 33-46 ◽  
Author(s):  
Mamadou Lamine Ndiaye
Keyword(s):  
Urban Agriculture ◽  
Irrigation Water

scholarly journals IDENTIFICATION OF LEAD AND CADMIUM LEVELS IN WHITE CABBAGE (Brassica rapa L.), SOIL, AND IRRIGATION WATER OF URBAN AGRICULTURAL SITES IN THE PHILIPPINES

2016 ◽  
Vol 9 (1) ◽  
pp. 1
Author(s):  
Hardiyanto Hardiyanto ◽  
Constancio C. De Guzman
Keyword(s):  
Brassica Rapa ◽  
Urban Agriculture ◽  
Irrigation Water ◽  
Negative Relationship ◽  
Dry Weight ◽  
The Philippines ◽  
Main Road ◽  
Lead And Cadmium ◽  
White Cabbage ◽  
Significant Difference

Urban agriculture comprises a variety of farming systems, ranging from subsistence to fully commercialized agriculture. Pollution from automobile exhaust, industrial and commercial<br />activities may affect humans, crops, soil, and water in and around urban agriculture areas. The research aimed to investigate the level and distribution of lead (Pb) and cadmium (Cd) in white cabbage (Brassica rapa L.), soil, and irrigation water taken from urban sites. The research was conducted in Las Piñas and Parañaque, Metro Manila, Philippines. The field area was divided into three sections based on its distance from the main road (0, 25, and 50 m). Irrigation water was taken from canal (Las Piñas) and river (Parañaque). Pb and Cd contents of the extract were measured by Atomic Absorption Spectrophotometry. Combined analysis over locations was used. The relationship between distance from the main road and metal contents was measured by Pearson’s correlation. Based on combined analyses, highly significant difference over locations was only showed on Cd content in white cabbage. Cd content in white cabbage grown in Parañaque was higher than that cultivated in Las Piñas, while Cd content in the soil between both sites was comparable.<br />The average Pb content (1.09 µg g-1 dry weight) was highest in the white cabbage grown right beside the main road. A similar trend was also observed in the soil, with the highest concentration being recorded at 26 µg g-1 dry weight. There was a negative relationship between distance from the main road and Pb and Cd contents in white cabbage and the soil. Level of Pb in water taken from the canal and river was similar (0.12 mg l-1), whereas<br />levels of Cd were 0.0084 and 0.0095 mg l-1, respectively. In general, the concentrations of Pb and Cd in white cabbage and soil as well as irrigation water were still in the acceptable limits. In terms of environmental hazards and polluted city environment, it seems that big cities in Indonesia especially Jakarta and Surabaya have the same problem with the Philippines. Therefore, it is suggested that the study on heavy metal contamination<br />in several crops, especially those grown along the main road, should be conducted.

scholarly journals IDENTIFICATION OF LEAD AND CADMIUM LEVELS IN WHITE CABBAGE (Brassica rapa L.), SOIL, AND IRRIGATION WATER OF URBAN AGRICULTURAL SITES IN THE PHILIPPINES

2016 ◽  
Vol 9 (1) ◽  
pp. 1 ◽  
Author(s):  
Hardiyanto Hardiyanto ◽  
Constancio C. De Guzman
Keyword(s):  
Brassica Rapa ◽  
Urban Agriculture ◽  
Irrigation Water ◽  
Negative Relationship ◽  
Dry Weight ◽  
The Philippines ◽  
Main Road ◽  
Lead And Cadmium ◽  
White Cabbage ◽  
Significant Difference

Urban agriculture comprises a variety of farming systems, ranging from subsistence to fully commercialized agriculture. Pollution from automobile exhaust, industrial and commercial<br />activities may affect humans, crops, soil, and water in and around urban agriculture areas. The research aimed to investigate the level and distribution of lead (Pb) and cadmium (Cd) in white cabbage (Brassica rapa L.), soil, and irrigation water taken from urban sites. The research was conducted in Las Piñas and Parañaque, Metro Manila, Philippines. The field area was divided into three sections based on its distance from the main road (0, 25, and 50 m). Irrigation water was taken from canal (Las Piñas) and river (Parañaque). Pb and Cd contents of the extract were measured by Atomic Absorption Spectrophotometry. Combined analysis over locations was used. The relationship between distance from the main road and metal contents was measured by Pearson’s correlation. Based on combined analyses, highly significant difference over locations was only showed on Cd content in white cabbage. Cd content in white cabbage grown in Parañaque was higher than that cultivated in Las Piñas, while Cd content in the soil between both sites was comparable.<br />The average Pb content (1.09 µg g-1 dry weight) was highest in the white cabbage grown right beside the main road. A similar trend was also observed in the soil, with the highest concentration being recorded at 26 µg g-1 dry weight. There was a negative relationship between distance from the main road and Pb and Cd contents in white cabbage and the soil. Level of Pb in water taken from the canal and river was similar (0.12 mg l-1), whereas<br />levels of Cd were 0.0084 and 0.0095 mg l-1, respectively. In general, the concentrations of Pb and Cd in white cabbage and soil as well as irrigation water were still in the acceptable limits. In terms of environmental hazards and polluted city environment, it seems that big cities in Indonesia especially Jakarta and Surabaya have the same problem with the Philippines. Therefore, it is suggested that the study on heavy metal contamination<br />in several crops, especially those grown along the main road, should be conducted.

scholarly journals Assessment of bacterial contamination of irrigation water and market gardening products at Parakou (A city in northern Benin)

2021 ◽  
Vol 15 (1) ◽  
pp. 241-250
Author(s):  
Eric Bio Nikki Sare ◽  
Armelle Sabine Yélignan Hounkpatin ◽  
Vidédji Naéssé Adjahossou ◽  
Abdel Fawaz Bagoudou ◽  
Anicette Bio Sourou
Keyword(s):  
Escherichia Coli ◽  
Urban Agriculture ◽  
Health Risks ◽  
Irrigation Water ◽  
Bacterial Contamination ◽  
Bacterial Load ◽  
Food Contamination ◽  
Fecal Coliforms ◽  
Biochemical Tests ◽  
Market Gardening

In many districts of Benin, the use of wastewater in urban agriculture is becoming more and more widespread. This activity around wastewater discharges potentially poses health risks to populations. As water is one of the main sources of food contamination in developing countries, the main objective of this study, oriented towards the assessment of the bacterial load, was to search for Salmonella which are pathogenic to humans in irrigation water as well as in some market gardening products consumed in Parakou district. The study was carried out on the market gardening perimeter of the slaughterhouse site located near the international marketArzèkè, where market gardeners exclusively use surface water from the mixture of groundwater and runoff from installed collectors. At the end of this study, the results from the observation of the different colonies, followed by biochemical tests for the detection and differentiation of Salmonella, allowed us to detect the presence of Salmonella in the different samples ranging from 50% to 80%. The presence of Fecal coliforms and Escherichia coli not only in water but also in market garden products was also confirmed. These results might partly explain the frequency of salmonellosis in the study area. Keywords: Salmonella, microbiological tests, biochemical tests.

scholarly journals Effect of irrigation water on the incidence of Salmonella spp. on lettuces produced by urban agriculture and sold on the markets in Dakar, Senegal

2011 ◽  
Vol 5 (19) ◽  
pp. 2885-2890 ◽  
Author(s):  
L Ndiaye M ◽  
Dieng Y ◽  
Niang S ◽  
R Pfeifer H ◽  
Tonolla M ◽  
...  
Keyword(s):  
Urban Agriculture ◽  
Irrigation Water ◽  
Salmonella Spp

To the issue of water treatment by hydrocyclone on the systems of the combined irrigation

2020 ◽  
Vol 0 (2) ◽  
pp. 21-25
Author(s):  
Nikolay Dubenok ◽  
Andrey Novikov ◽  
Sergei Borodychev ◽  
Maria Lamskova
Keyword(s):  
Water Treatment ◽  
Organic Compounds ◽  
Irrigation Water ◽  
Irrigation System ◽  
Petroleum Products ◽  
Cylindrical Part ◽  
Agricultural Landscapes ◽  
Treatment Unit ◽  
Drain Pipe ◽  
Irrigation Network

At the stage of water treatment for irrigation systems, the efficiency capture coarse and fine mechanical impurities, as well as oil products and organic compounds affects the reliability of the equipment of the irrigation network and the safety of energy exchange processes in irrigated agricultural landscapes. The violation of work irrigation system can cause disruptions in irrigation schedules of agricultural crops, crop shortages, degradation phenomena on the soil and ecological tension. For the combined irrigation system, a water treatment unit has been developed, representing a hydrocyclone apparatus with a pipe filter in the case. For the capacity of 250 m3/h the main geometrical dimensions of hydrocyclone have been calculated. To organize the capture petroleum products and organic compounds, it has been proposed a modernization of a hydrocyclone unit, consisting in dividing the cylindrical part of the apparatus into two section. The first is section is for input irrigation water, the second one is for additional drainage of clarified irrigation water after sorption purification by the filter, placed on the disk and installed coaxially with the drain pipe and the pipe filter.

The Relationship between Priority and Value of Irrigation Water Used with Prior Appropriation Water Rights

2020 ◽  
Vol 96 (3) ◽  
pp. 384-398 ◽  
Author(s):  
Gi-Eu Lee ◽  
Kimberly Rollins ◽  
Loretta Singletary
Keyword(s):  
Irrigation Water ◽  
Water Rights ◽  
Value Of Irrigation Water ◽  
The Relationship

Gardening as More than Urban Agriculture: Perspectives from Smaller Midwestern Cities on Urban Gardening Policies and Practices

2019 ◽  
Vol 3 (1) ◽  
pp. 1-8
Author(s):  
Christopher Strunk ◽  
Ursula Lang
Keyword(s):  
Urban Agriculture ◽  
Green Space ◽  
Private Property ◽  
Community Gardens ◽  
Public Land ◽  
Vacant Lots ◽  
Urban Gardening ◽  
Privately Owned ◽  
Policies And Practices

For the most part, research and policymaking on urban gardening have focused on community gardens, whether in parks, vacant lots, or other public land. This emphasis, while important for many Midwestern cities, can obscure the significance of privately owned land such as front yard and back yard and their crucial connections with gardening on public land. In this case study, we examine how policies and practices related to gardening and the management of green space in two Midwestern cities exceed narrow visions of urban agriculture. The article explores the cultivation of vacant lot gardens and private yards as two modes of property in similar Midwestern contexts and argues that the management of green space is about more than urban agriculture. Instead, we show how urban gardening occurs across public/private property distinctions and involves a broader set of actors than those typically included in sustainability policies. Gardening also provides a key set of connections through which neighbors understand and practice sustainability in Midwestern cities.

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