scholarly journals Effect of Sulfur on Rice Water Quality, Nutrient Uptake, and Yields Grown on Shallow Histosols

2021 ◽  
Vol 4 (1) ◽  
Author(s):  
Amgain Naba R ◽  
Zacharias Quinn ◽  
Rabbany Abul ◽  
Bhadha Jehangir H
Keyword(s):  
Water Quality ◽  
Nutrient Uptake ◽  
Rice Water

Effect of water quality on grain yield and nutrient uptake of rice (Oryza sativa L.)

2004 ◽  
Vol 52 (2) ◽  
pp. 141-148 ◽  
Author(s):  
H. El-Sharkawi ◽  
M. Irshad ◽  
A. M El-Serfy ◽  
T. Honna ◽  
Keyword(s):  
Water Quality ◽  
Heavy Metal ◽  
Grain Yield ◽  
Nutrient Uptake ◽  
Fresh Water ◽  
Poor Quality ◽  
Drainage Water ◽  
Rice Grain ◽  
Quality Water ◽  
Poor Quality Water

The use of poor quality water for agriculture is now receiving major attention especially in arid and semi-arid regions. This experiment was carried out to evaluate the effects of different irrigation water qualities on the grain yield and nutrient uptake of rice and on the heavy metal concentration in the grains. Six water treatments were applied at intervals of three days, involving either fresh water (FW), drainage water (DW), mixed water (MW), fresh water followed by drainage water (1FW + 1DW), two applications of fresh water followed by one of drainage water (2FW + 1DW) or one application of fresh water followed by two of drainage water (1FW + 2DW). The rice grain yield and the uptake of nitrogen (N), phosphorus (P) and potassium (K) were determined. The grains were also analysed for the concentration of nickel (Ni), cadmium (Cd) and lead (Pb). The results showed that the grain yield, the uptake of N, P and K in the plant biomass and the concentration of heavy metals in the grains were significantly affected by the water quality. The rice grain yield exhibited a close correlation with the water quality. The highest grain yield was obtained in the FW treatment and the lowest yield in the DW treatment. The uptake of N, P and K was detrimentally affected by poor quality water. However, the uptake trend for these elements was similar across all the irrigation treatments. The concentrations of heavy metal in the grains were significantly higher in plots irrigated with poor quality water. Among the treatments the cumulative concentrations of heavy metal were in the order of: DW ≯1FW + 2DW ≯ MW ≯ 1FW + 1DW ≯ 2FW + 1DW ≯ FW. This study showed that there is a potential risk of heavy metal contamination in rice crops treated with poor quality water. The lower grain yield after irrigation with poor quality water could be due to the disturbed mineral nutrition or to relatively higher salt toxicity.

scholarly journals Sediment Nutrient Flux Rates in a Shallow, Turbid Lake Are More Dependent on Water Quality Than Lake Depth

Water ◽  
2021 ◽  
Vol 13 (10) ◽  
pp. 1344
Author(s):  
Jordan L. Evans ◽  
Justin N. Murdock ◽  
Jason M. Taylor ◽  
Richard E. Lizotte
Keyword(s):  
Water Quality ◽  
Water Temperature ◽  
Nutrient Uptake ◽  
Water Depth ◽  
Nutrient Flux ◽  
Spatial Gradient ◽  
Total N ◽  
Uptake Rates ◽  
Influence Of Water ◽  
Turbid Lake

The bottom sediments of shallow lakes are an important nutrient sink; however, turbidity may alter the influence of water depth on sediment nutrient uptake by reducing light and associated oxic processes, or altering nutrient availability. This study assessed the relative influence of water quality vs. water depth on sediment nutrient uptake rates in a shallow agricultural lake during spring, when sediment and nutrient loading are highest. Nitrate and soluble reactive phosphorus (SRP) flux rates were measured from sediment cores collected across a depth and spatial gradient, and correlated to water quality. Overlying water depth and distance to shore did not influence rates. Both nitrate and SRP sediment uptake rates increased with greater Secchi depth and higher water temperature, and nitrate and SRP rates increased with lower water total N and total P, respectively. The importance of water temperature on N and P cycling was confirmed in an additional experiment; however, different patterns of nitrate reduction and denitrification suggest that alternative N2 production pathways may be important. These results suggest that water quality and temperature can be key drivers of sediment nutrient flux in a shallow, eutrophic, turbid lake, and water depth manipulation may be less important for maximizing spring runoff nutrient retention than altering water quality entering the lake.

scholarly journals The Utilization of Gracilaria verrucosa as Fish Processing Wastewater Biofilter

2020 ◽  
Vol 147 ◽  
pp. 02022
Author(s):  
Dhia Rahma Sari ◽  
Ratih Ida Adharini
Keyword(s):  
Water Quality ◽  
Nutrient Uptake ◽  
Quality Parameters ◽  
Gracilaria Verrucosa ◽  
Fish Processing ◽  
Seaweed Biomass ◽  
Smoked Fish ◽  
Salinity Water ◽  
And Control ◽  
Brackish Water Aquaculture

Wastewater from the smoked-fish processing industry has been known to cause water pollution in Pengadulan Estuary, Jepara. This research aimed to assess the ability of Gracilaria verrucosa as biofilter for fish processing wastewater and investigate its growth rate. This study was conducted at the Center for Brackish Water Aquaculture (BBPBAP) Jepara from January to April 2019. This study used three different G. verucosa biomass in 60 L aquarium: 150 gram (A); 200 gram (B); and 250 gram (C) and control. The parameters observed in the study were seaweed biomass, nutrient uptake by seaweed, and water quality parameters: salinity, water temperature, pH, dissolved oxygen, TSS, BOD5, ammonia (NH3), nitrate (NO3), and phosphate (PO4). The results showed that G. verrucosa decreased ammonia, phosphate, and nitrate by 67.6%, 96%, and 37.1%, respectively. The result of RGR value has increased on the 10th and 30th day whereas on the 20th day were declined. The highest RGR value obtained on the 10th day on Treatment 1, which is 2.1% per day. It can be inferred that G. verrucosa is capable of increasing the water quality and the nutrient uptake in fish processing wastewater. Therefore, G. verrucosa held potential as both ecologically and economically sustainable biofilter.

Crop Yields, Nutrient Uptake, Soil and Water Quality During 20 Years on the Rosemount Sewage Sludge Watershed

2015 ◽  
pp. 137-148 ◽  
Author(s):  
C. E. Clapp ◽  
R. H. Dowdy ◽  
D. R. Linden ◽  
W. E. Larson ◽  
C. M. Hormann ◽  
...  
Keyword(s):  
Water Quality ◽  
Sewage Sludge ◽  
Nutrient Uptake ◽  
Crop Yields ◽  
Soil And Water

scholarly journals Incorporating In-Stream Nutrient Uptake into River Management: Gipuzkoa Rivers (Basque Country, North Spain) as a Case Study

2019 ◽  
Vol 11 (9) ◽  
pp. 2692 ◽  
Author(s):  
Maddi Altuna ◽  
Eugènia Martí ◽  
Francesc Sabater ◽  
José Ramón Díez ◽  
Joan Lluís Riera ◽  
...  
Keyword(s):  
Water Quality ◽  
Nutrient Uptake ◽  
Basque Country ◽  
Nutrient Retention ◽  
The Self ◽  
Nutrient Concentrations ◽  
Integrative Approach ◽  
Nutrient Loads ◽  
River Channels ◽  
Retention Capacity

Gipuzkoa (Basque Country, North Spain) is an industrial region where investments in sanitation and wastewater treatment have improved water quality and partially recovered river biological communities. However, further technological improvements are unlikely. Our objective was to assess whether in-stream self-purification may contribute to improvement of the trophic state of rivers. We propose an integrative approach to assessing river water quality, which diagnoses problems, identifies likely causes and prescribes solutions. We first analysed the loads of nutrients transported by Gipuzkoa rivers and compared them with the potential nutrient uptake rates (estimated from published empirical regressions). In reaches where both of them were within one order of magnitude, we considered that the self-purification capacity of river channels may influence nutrient concentrations. Then, we selected some river reaches where no other water quality problems beyond nutrient concentrations occurred and ran the expert system STREAMES 1.0 to diagnose the problems and detect their causes. The studied reaches differed in their problems and in their potential solutions. We empirically determined nutrient retention in two streams by means of mass balances and slug nutrient additions. We detected large differences in retention capacity between reaches and siltation as one of the main problems affecting the self-purification capacity of the study streams. Finally, we used STREAMES 1.0 to identify potential solutions to specific river sections. The results obtained so far point towards an important potential of in-stream bioreactive capacity to reduce nutrient loads and to specific restoration activities that may improve the functionality and trophic status of the streams in Gipuzkoa.

Effect of Some Natural Mineral Waters in Nutrient Uptake by Caco-2 Cells

2010 ◽  
Vol 80 (2) ◽  
pp. 131-143 ◽  
Author(s):  
Pedro Gonçalves ◽  
João R. Araújo ◽  
Fátima Martel
Keyword(s):  
Nutrient Uptake ◽  
Mineral Waters ◽  
Distilled Water ◽  
Natural Mineral ◽  
Minute Exposure

We studied the effect of some mineral waters and some of their constituents on the apical uptake of 14C-butyrate (14C-BT) and 3H-O-methyl-D-glucose (3H-OMG) by Caco-2 cells. Uptake of 14C-BT increased after a 20-minute exposure to 1 % (v/v) distilled water, and, compared to distilled water, it was decreased by Pedras Salgadas® 1 % (v/v) and Melgaço® 5 % (v/v), and increased by Vidago® 5 % (v/v). Moreover, it increased after a 48-hour exposure to Vidago® or Melgaço® waters (5 % (v/v)). Also, uptake of 14C-BT was reduced after a 20-minute exposure to MgCl2, MgSO4, or CaCl2. Uptake of 3H-OMG was reduced after a 20-minute exposure to Melgaço® water [1 % (v/v)], when compared to distilled water. Also, a 48-hour exposure to Pedras Salgadas® or Melgaço® water (5 % (v/v)) increased and decreased uptake, respectively. Finally, uptake of 3H-OMG decreased after a 20-minute exposure to MgSO4 or NaF. In conclusion, uptake of 14C-BT and 3H-OMG by Caco-2 cells is differently modulated by distinct mineral waters.

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