scholarly journals Aquatic macroinvertebrates in Uruguayan rice agroecosystem

2021 ◽  
Vol 9 ◽  
Author(s):  
Leticia Bao ◽  
Sebastián Martínez ◽  
Mónica Cadenazzi ◽  
Mónica Urrutia ◽  
Lucía Seijas ◽  
...  
Keyword(s):  
Costa Rica ◽  
Paddy Field ◽  
Grain Filling ◽  
Diversity Indices ◽  
Water Sources ◽  
Control Area ◽  
Aquatic Macroinvertebrates ◽  
Quality Of Water ◽  
Grain Filling Stage

This work is a first approach to the knowledge of insects and other aquatic macroinvertebrates of rice agroecosystems from eastern Uruguay. The composition of the groups collected may represent an approximation to the knowledge of the quality of water sources associated with Uruguayan rice production. Sampling of aquatic macroinvertebrates was carried out during the grain-filling stage in crops without insecticide use, in three localities of Treinta y Tres Department. In each crop, macroinvertebrates were collected with a Surber-type network at the inlet and outlet of water to and from the paddy field and a neighbouring control area. Differences in morphospecies composition were found according to the location and source of water. Insecta was the most represented class in macroinvertebrate samplings (41.5%). Diptera (59.9%), Hemiptera (16.3%) and Ephemeroptera (14.0%) were the most abundant orders within insects. The Richness and Shannon Diversity Indices were higher than those recorded for similar studies in Costa Rica, Italy and Australia.

Effect of Temperature during Grain Filling Stage on Endosperm Structure and Apperance Quality of Aromatic Rice

2012 ◽  
Vol 460 ◽  
pp. 286-289 ◽  
Author(s):  
Zhen Jiang Xu ◽  
Li Zhong Xiao ◽  
Hong Liu ◽  
Yong Hao Ren ◽  
Zhi Lin Li
Keyword(s):  
Grain Filling ◽  
Effect Of Temperature ◽  
Rice Grain ◽  
Aromatic Rice ◽  
Starch Granules ◽  
Filling Stage ◽  
Appearance Quality ◽  
Endosperm Structure ◽  
Grain Filling Stage

Based on the experiment of two inbred aromatic rice varieties and one hybrid aromatic rice line treated under four different temperatures( daymean temperature 21°C, 23°C, 26°C and 30°C respectively) during grain filling stage in phytotrons, the shape and arrangement of endosperm starch granules in rice grain transection were observed by scanning electron microscope and the related characteristics of rice grain qualities of chalky percent and chalkiness were analyzed at the same time. The results showed that under the lower temperature( daymean temperature21°C and 23°C), many large compound starch granules with clear angulars packed together regularly without significant natural gaps bewteen starch granules in the tansectional endosperm. However, with the increase of temperature, starch granules in the transectional endosperm were changed from regularly shaped and closely and orderly arranged to various shaped and chaoticly arranged with obvious natural gaps between starch granules, which was closely consistent with the poorer appearance quality under the higher temperature, which indicated that the endosperm structure is closely related with appearance quality of aromatic rice.

scholarly journals Quality of water sources in Southwestern Uganda using the compartment bag test (CBT): a cross-sectional descriptive study

2019 ◽  
Vol 9 (4) ◽  
pp. 683-693
Author(s):  
Richard Onyuthi Apecu ◽  
Lucas Ampaire ◽  
Edgar Mugema Mulogo ◽  
Fred Norman Bagenda ◽  
Afsatou Traore ◽  
...  
Keyword(s):  
Water Samples ◽  
Water Sources ◽  
World Health ◽  
Most Probable Number ◽  
Physical Parameters ◽  
Probable Number ◽  
Gravitational Flow ◽  
Quality Of Water ◽  
Compartment Bag Test

Abstract The aim of this study was to assess the bacteriological quality of water sources in the two rural areas of Uganda using the compartment bag test (CBT). In total, 200 water samples were collected from 69 different water sources and processed within 6 h of collection. Positive and negative controls were processed each day together with water samples. Physical parameters were measured in situ. Descriptive statistics were used to generate mean, minimum, maximum, standard deviations and percentages. The results indicated that 29% of the water sources met the National Standards and World Health Organization (WHO) Guidelines for drinking water. Sixty percent of the borehole, 44% of gravitational flow taps and 14% of roof rain water met the required standards. Of the open water sources, 75% of the rivers, 50% of open channels and 43% of unprotected dug wells plus 25% of protected springs and 9% of gravitational flow schemes had most probable number counts >100 Escherichia coli/100 mL of water. Most of the water sources in the study areas were not fit for human consumption without prior treatment. The CBT was found to be robust and easy to use in all field situations. The mean physical parameters of water sources were within the acceptable limits.

scholarly journals Quality of water sources used as drinking water in a Brazilian peri-urban area

2011 ◽  
Vol 42 (2) ◽  
pp. 560-566 ◽  
Author(s):  
Maria Tereza Pepe Razzolini ◽  
Wanda Maria Risso Günther ◽  
Francisca Alzira dos Santos Peternella ◽  
Solange Martone-Rocha ◽  
Veridiana Karmann Bastos ◽  
...  
Keyword(s):  
Drinking Water ◽  
Urban Area ◽  
Water Sources ◽  
Quality Of Water

Chemometrics to evaluate the quality of water sources for human consumption

2006 ◽  
Vol 156 (3-4) ◽  
pp. 315-320 ◽  
Author(s):  
Pavlina Simeonova ◽  
Vasil Simeonov
Keyword(s):  
Water Sources ◽  
Human Consumption ◽  
Quality Of Water

Build up a database to determine the management of drinking water in the Province of Cartago, Costa Rica

2016 ◽  
Vol 6 (4) ◽  
pp. 584-592 ◽  
Author(s):  
Silvia M. Soto Córdoba ◽  
Macario Pino Gómez ◽  
Lilliana Gaviria Montoya
Keyword(s):  
Drinking Water ◽  
Costa Rica ◽  
Water Distribution ◽  
Potable Water ◽  
Public Institutions ◽  
Demand And Supply ◽  
On Demand ◽  
Quality Of Water ◽  
Water Exploitation

In Costa Rica, the majority of people have drinking water in their homes, but because of climate change along with the increase of population and non-existent planning programs, the distribution of this resource could be affected. To ensure sustainability of drinking water, information on demand and supply is required. Unfortunately, the information is outdated and there is no single unified database to which all management related institutions have access. Costa Rica has many public institutions that perform quality control, monitor and provide licenses for water exploitation. Each institution organizes its information according to their own criteria, therefore, making it impossible to compare the data, and difficult to identify the main problems. The authors verified and compared every database available, aiming to consolidate one database to determinate management of water distribution in Cartago. The main results of this research identified distribution of water suppliers throughout the province, the results were: Aqueduct Administration Associations (27.1%), Municipal Aqueducts (60.2%) and National Costa Rica Aqueducts and Sewerage Institute (AyA) Aqueducts (14.1%). One hundred per cent of Municipal and AyA Aqueducts disinfect and provide potable water, but 25% of Aqueduct Administration Rural Associations do not disinfect the water and there is not enough information about the quality of water that they offer.

A Multidimensional Measure of Diarrheal Disease Load Changes Resulting from Access to Improved Water Sources in Honduras

2009 ◽  
Vol 32 (1) ◽  
pp. 15-20 ◽  
Author(s):  
Jeffery Deal ◽  
Sylvia Nazar ◽  
Ronald Delaney ◽  
Micah Sorum ◽  
Thomas Leatherman ◽  
...  
Keyword(s):  
Developing Countries ◽  
Diarrheal Disease ◽  
Water Sources ◽  
Morbidity And Mortality ◽  
Multidimensional Measure ◽  
Quality Of Water ◽  
Waterborne Illnesses ◽  
Access And Quality ◽  
The Impact

Waterborne illnesses continue to be a major source of morbidity and mortality in developing countries. A myriad of interventions to improve both access and quality of water for household use has been used. The impact of these interventions is most commonly measured by self-reported frequencies of diarrhea, a method prone to significant reporting bias.

scholarly journals Organik Tavukçulukta İçme Suyu Özellikleri, Beslemedeki Önemi ve Su Kalitesini Artırmaya Yönelik Uygulamalar

2013 ◽  
Vol 1 (1) ◽  
pp. 12 ◽  
Author(s):  
Hasan Eleroğlu ◽  
Arda Yıldırım ◽  
Ahmet Şekeroğlu
Keyword(s):  
Water Quality ◽  
Water Sources ◽  
Organic Production ◽  
Poultry Production ◽  
Water Contaminants ◽  
Quality Of Water ◽  
Quality Of Products ◽  
Physical And Chemical ◽  
The Impact

The source of water, the content and quality is very important used in every stage of poultry production. The birds must have continuous access and supply of quality water without any antibiotic and bacteriological residues. Sensory, physiochemical properties and chemical composition must be taken into consideration while assessing water quality. The quality of water used in the production of conventional or organic poultry has impacts on the poultry health, quality of products and human health. The impact of water quality is higher on the functionality of water in live organism and the consumption amount varies depending on many factors. A source of water which is used in organic production is also important with their characteristics. Different water sources may be used for animal consumption, such as springs, shallow wells, deep and artesian wells, lakes and creeks. Organic farms should regularly submit water samples to a laboratory for testing of water quality against the possibility of contamination of water sources. Water contaminants could create equipment problems and restrict the amount of water available for consumption therefore affects the quality of products. There are many aspects to the broad problems of water quality and different physical and chemical applications used to ensure sustainability of water quality for human and animal use. In this review, it will be focused on the quality of the water to be used in the organic poultry production and quality enhancing physical and chemical applications.

MINING IN THE GRAND CANYON WATERSHED AND THE IMPLICATIONS ON THE QUALITY OF WATER SOURCES

2018 ◽  
Author(s):  
Jordan Wachholtz ◽  
◽  
Gregg Paulson ◽  
Crystal Wu ◽  
David K. Kreamer
Keyword(s):  
Grand Canyon ◽  
Water Sources ◽  
Quality Of Water
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