WATER TABLE DEPTH SPATIAL VARIABILITY IN AN ALLUVIAL SOIL OF THE SEMI-ARID REGION OF BRAZIL

2001 ◽  
Author(s):  
Maria Sallydelândia Sobral de Farias ◽  
Vera Lúcia Antunes de Lima ◽  
Tumkur Rajaro Gopinath ◽  
José Dantas Neto ◽  
Carlos Alberto Vieira de Azevedo
Keyword(s):  
Spatial Variability ◽  
Water Table ◽  
Arid Region ◽  
Alluvial Soil ◽  
Water Table Depth ◽  
Semi Arid Region ◽  
Semi Arid

Field-scale spatial variability of soil calcium in a semi-arid region: Implications for soil erosion and site-specific management

Pedosphere ◽  
2021 ◽  
Vol 31 (5) ◽  
pp. 705-714
Author(s):  
Yazhou SUN ◽  
Wenxuan GUO ◽  
David C. WEINDORF ◽  
Fujun SUN ◽  
Sanjit DEB ◽  
...  
Keyword(s):  
Soil Erosion ◽  
Spatial Variability ◽  
Arid Region ◽  
Field Scale ◽  
Site Specific ◽  
Soil Calcium ◽  
Semi Arid Region ◽  
Semi Arid ◽  
Specific Management

scholarly journals Variation of the water table and salinity in alluvial aquifers of underground dams in the semi-arid region of Rio Grande do Norte, Brazil

2019 ◽  
pp. 477-484
Author(s):  
Alexandre de Oiveira Lima ◽  
Francisco Pinheiro Lima-Filho ◽  
Nildo da Silva Dias ◽  
René Chipana-Rivera ◽  
Miguel Ferreira Neto ◽  
...  
Keyword(s):  
Water Table ◽  
Arid Region ◽  
Rio Grande ◽  
Alluvial Aquifers ◽  
Semi Arid Region ◽  
Underground Dams ◽  
Semi Arid

Rising water table: A threat to sustainable agriculture in an irrigated semi-arid region of Haryana, India

2010 ◽  
Vol 97 (10) ◽  
pp. 1443-1451 ◽  
Author(s):  
Ajay Singh ◽  
Peter Krause ◽  
Sudhindra N. Panda ◽  
Wolfgang-Albert Flugel
Keyword(s):  
Sustainable Agriculture ◽  
Water Table ◽  
Arid Region ◽  
Semi Arid Region ◽  
Semi Arid

Effects of shallow water table on capillary contribution, evapotranspiration, and crop coefficient of maize and winter wheat in a semi-arid region

2001 ◽  
Vol 52 (3) ◽  
pp. 317 ◽  
Author(s):  
Shaozhong Kang ◽  
Fucang Zhang ◽  
Xiaotao Hu ◽  
Peter Jerie ◽  
Lu Zhang
Keyword(s):  
Winter Wheat ◽  
Water Table ◽  
Arid Region ◽  
Crop Coefficient ◽  
Growing Season ◽  
Groundwater Table ◽  
Summer Maize ◽  
Semi Arid Region ◽  
Crop Coefficients ◽  
Semi Arid

A lysimeter experiment was conducted during 19866—96 to study the impacts of groundwater tables on the capillary contribution, evapotranspiration, and crop coefficient of maize and winter wheat grown in a semi-arid region in loess loam soils. The depth of groundwater table was set to 0.5, 0.8, 1.0, 1.2, 1.5, 2.0, and 2.50 m, respectively. The results showed that the rate of capillary contribution from groundwater to crop root-zone was influenced mainly by the depth of the water tables. The daily variation in capillary contribution was not the same as pan evaporation; the peak was delayed when the water table was >0.8 m, and the time of delay increased with the depth of water table. The crop evapotranspiration was decreased with increasing groundwater table in the early growth period and harvest period. The maximum evapotranspiration occurred at 1.2 m groundwater table in the other periods. Values of crop coefficients (K c ) were estimated based on the measured evapotranspiration (ET) and reference crop ET computed by the modified Penman method. The estimated K c was significantly different from the values computed and used in the region in the absence of groundwater table effects, and it varied markedly with groundwater tables. Relationships between the crop coefficient and the depth of groundwater table were developed using mean crop coefficients derived from multi-year data. It was found that linear model was better for the period Octobermp;mdash;February in the winter wheat growing season and June in the summer maize growing season. The polynomial model was suitable for the period March;mdahs;June in the winter wheat growing season and from July to October in the summer maize growing season.

scholarly journals Spatial Variability of Physical Attributes of Soil in Cultivated Area with Forage Palm Resistant to Carmine Cochineal in the Northeastern Semi-arid Region

2019 ◽  
Vol 42 (4) ◽  
pp. 39-45
Author(s):  
M. V. SILVA ◽  
G. L. P. ALMEIDA ◽  
P. H. D. BATISTA ◽  
H. PANDORFI ◽  
G. A. P. A. MACÊDO ◽  
...  
Keyword(s):  
Spatial Variability ◽  
Arid Region ◽  
Physical Attributes ◽  
Semi Arid Region ◽  
Semi Arid

The Molecular Characterization and Biological Assessment of the Leaves Extracts of Loofah Reveal their Nutraceutical Potential

2020 ◽  
Vol 11 ◽  
Author(s):  
Takoua Ben Hlel ◽  
Feten Belhadj ◽  
Fatih Gül ◽  
Muhammed Altun ◽  
Ayşe Şahin Yağlıoğlu ◽  
...  
Keyword(s):  
Fatty Acids ◽  
Phenolic Compounds ◽  
Hela Cell ◽  
Arid Region ◽  
Biological Properties ◽  
Biological Assessment ◽  
Omega 3 ◽  
Hela Cell Lines ◽  
Semi Arid Region ◽  
Semi Arid

Background:: Luffa cylindrica is a plant that is widely distributed in Africa and Asia and it can be grown in regions with tropical or subtropical climates. Few patents dealt with Loofah biological properties, including some functional foods formulated from its leaves. Objective:: This study aimed to structurally and functionally characterize the bioactive compounds of L. cylindrica leaves grown in two different environments. Methods:: The extracts of L. cylindrica leaves collected from two Tunisian locations: Essouasi (LE), a semi-arid region and Medenine (LM) an arid region, were investigated for their phenolic compounds and fatty acids using HPLC/TOF-MS and GCMS techniques respectively. Furthermore, the antioxidant capacity was evaluated with DPPH, Chelating effect, Hydroxyl radical and Superoxide anion scavenging activities while the anticancer activity against HeLa cell lines was assessed using xCELLigence real time cell analyzer and lactate dehydrogenase cytotoxicity assay. Results:: The antiproliferative capacity of both extracts was time and dose-dependent with LE presenting the lowest HeLa cell index (CI = 0.035 ± 0.018, 250 μg/ml). LE also showed the best cytotoxic capacity (56.49 ± 0.8%) and antioxidant potential (IC50 = 54.41 ± 1.12 μg/ml for DPPH and 12.12 ± 0.07 μg/ml for chelating effet). 14 phenolic compounds were detected in LE with ferulic acid being the major compound (5128.5 ± 4.09 μg Phenols/g) while LM had only 6 phenolics. GCMS analysis showed the presence of omega-3 fatty acids in LE. Conclusions:: Our findings suggest that L. cylindrica leaves, especially when collected from semi-arid regions, are promising for formulating nutraceuticals of interest.

Space-time monitoring of soil organic carbon content across a semi-arid region of Australia

2021 ◽  
Vol 24 ◽  
pp. e00367
Author(s):  
Patrick Filippi ◽  
Stephen R. Cattle ◽  
Matthew J. Pringle ◽  
Thomas F.A. Bishop
Keyword(s):  
Organic Carbon ◽  
Soil Organic Carbon ◽  
Carbon Content ◽  
Arid Region ◽  
Space Time ◽  
Organic Carbon Content ◽  
Soil Organic Carbon Content ◽  
Semi Arid Region ◽  
Semi Arid
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