scholarly journals Soil salinity and its distribution determined by soil sampling and electromagnetic techniques

2003 ◽  
Vol 19 (2) ◽  
pp. 119-126 ◽  
Author(s):  
J. Herrero ◽  
A.A. Ba ◽  
R. Aragüés
Keyword(s):  
Soil Salinity ◽  
Soil Sampling

scholarly journals A Heritage Agronomic Study as a Database for Monitoring the Soil Salinity of an Irrigated District in NE Spain

Agronomy ◽  
2022 ◽  
Vol 12 (1) ◽  
pp. 126
Author(s):  
Juan Herrero ◽  
Carmen Castañeda ◽  
Rosa Gómez-Báguena
Keyword(s):  
Soil Salinity ◽  
State Of The Art ◽  
Soil Sampling ◽  
Irrigation District ◽  
Sustainable Land Management ◽  
Irrigation Methods ◽  
Irrigated Area ◽  
Sampling Campaign ◽  
Salinity Data ◽  
Study Sites

This article presents and reviews the soil salinity data provided by a rescued vintage agronomic report on an irrigated area of 35,875 ha located in the center of the Ebro River basin, in the NE of mainland Spain. These data come from a soil sampling campaign conducted from May to the first half of July 1975 for the purpose of delineating saline and non-saline soils. The agronomic report was produced in response to demands from farmers to combat soil salinity, and represents the state of the art in those years for salinity studies. Our paper presents the scrubbed soil salinity data for this year, checking their consistency and locating the study sites. The main finding is the unearthing of this heritage report and the discussion of its soil salinity data. We show that the report supplies an assessment and a baseline for further soil salinity tracking by conducting new measurements either by direct soil sampling or by nondestructive techniques, providing an estimate of soil salinity at different locations. This task is feasible, as shown in our previously published articles involving nearby areas. A comparison of the salt amount in the soil over the years would provide a means to evaluate irrigation methods for sustainable land management. This comparison can be conducted simultaneously with analysis of other agricultural features described in the report for the irrigation district in 1975.

scholarly journals Temporal Variability of Soil and Water Salinity and Its Effect on Crop at Kalapara Upazila

2015 ◽  
Vol 7 (2) ◽  
pp. 111-114 ◽  
Author(s):  
MA Haque ◽  
M Jahiruddin ◽  
MA Hoque ◽  
MZ Rahman ◽  
D Clarke
Keyword(s):  
Soil Salinity ◽  
Crop Production ◽  
Soil Sampling ◽  
Water Salinity ◽  
Dry Period ◽  
Flooded Soils ◽  
Leaf Injury ◽  
Crop Fields ◽  
Tube Wells ◽  
Water Melon

Salinity is a serious threat to the crop production in the southern region of Bangladesh and it is especially important during dry period of a year. A study was undertaken to examine the changes in water and soil salinity over the period from February to April, 2014 at Kalapara upazila of Patuakhali district. Water samples were periodically collected from lake, pond, earthen well, deep tube-wells (5, 15 and 30 km away from the sea) and rivers (Tulatoli, Khaprabhanga, Sonatala and Andharmanik). Soil sampling was done from different crop fields (mustard, sweet gourd, potato, chilli, Khira-cucumber) and water melon and also from Sonatala and Andharmanik River flooded soils inside and outside polders. The electrical conductivity (EC) value of lake and pond waters was below 4 dS/m showing quite safe for irrigation while the EC value of earthen well exceeded 4 dS/m which are suitable in April. Water salinity of deep tube-wells (DTWs) increased as the DTW was closer to the sea, however all EC values were below 4 dS/m that suitable for irrigation, but not suitable for drinking purpose. Salinity level of all rivers tended to rise with the advancement of drying period, and for all dates of sampling, the EC value showed more than 4 dS/m. Soil salinity varied between inside and outside polder, and between mustard and sweet gourd fields, the higher EC values were observed outside polder and in the sweet gourd field. Soil EC levels were all above 4 dS/m particularly in April, crops showed varying degrees of leaf injury depending on the types of crops and extent of soil salinity. The EC values were positively correlated with Na and K contents of soil.DOI: http://dx.doi.org/10.3329/jesnr.v7i2.22218 J. Environ. Sci. & Natural Resources, 7(2): 111-114 2014

A Soil Sampling Method Based on Field Measurements, Remote Sensing Images and Kriging Technique

2011 ◽  
Vol 383-390 ◽  
pp. 5350-5356
Author(s):  
Quan Quan ◽  
Bing Shen
Keyword(s):  
Remote Sensing ◽  
Soil Properties ◽  
Soil Salinity ◽  
Sampling Method ◽  
Land Reclamation ◽  
Management Practice ◽  
Field Measurements ◽  
Soil Sampling ◽  
Soil Reclamation ◽  
Remote Sensing Images

How to determine a representative and economical soil sampling method that combines soil properties with advanced technologies has been an unsolved issue in soil related studies. This paper proposes a new method for soil sampling based on some measured salinity data and remote sensing images, as well as analysis of spatial distributions of soil properties in Lubotan land reclamation area in Shaanxi, China. The results showed that with the available data sets of 33 points, up to 101 unknown points can be estimated, and further interpolation of 343 points displayed spatial distribution of soil salinity in the study area, the coefficients of determination (R2) for the predicted soil salinity were 0.817, respectively. A further Kriging analysis for top soil salinity distribution in the study area showed that soil salinity has a medium degree of autocorrelation and low variability. The study in this paper may help understand the effect of soil reclamation efforts and local water management practice.

scholarly journals Evaluation of soil salinity and sodicity using electromagnetic conductivity imaging 

2021 ◽  
Author(s):  
Mohammad Farzamian ◽  
Francisco José Martinez Moreno ◽  
Tiago B. Ramos ◽  
Nadia Castanheira ◽  
Ana Marta Paz ◽  
...  
Keyword(s):  
Soil Properties ◽  
Soil Salinity ◽  
Electromagnetic Induction ◽  
Lower Cost ◽  
Sustainable Use ◽  
Soil Sampling ◽  
Soil Electrical Conductivity ◽  
Sodic Soils ◽  
Non Invasive ◽  
Soil Exchange Complex

<p>In order to prevent further soil degradation, it is important to understand the processes controlling salinization. Salt related problems in soils can refer to an excess of soluble salts (saline soils), a dominance of exchangeable sodium in the soil exchange complex (sodic soils), or a mixture of both situations (saline-sodic soils). These categories are important because the impacts and management vary accordingly. Traditional soil sampling methods –which require boreholes for soil sampling and analysis– difficultly lead to a comprehensive answer to this problem. This is because they cover only small and localized sites and may not be representative of the soil properties at the management scales. Furthermore, they are highly time and work consuming, resulting in costly surveys. Geophysical techniques such as electromagnetic induction (EMI) provide enormous advantages compared to soil sampling because they allow for in-depth and non-invasive analysis, covering large areas in less time and at a lower cost.</p><p>EMI surveys were performed in several regions in Portugal with historic soil salinity and sodicity problems to evaluate the salinization risk. We inverted field apparent conductivity data (σ<sub>a</sub>) in order to obtain electromagnetic conductivity images (EMCI) of the real soil electrical conductivity (σ) in depth. We evaluated the potential of EMCI in the estimation of soil salinity, sodicity, and other soil properties over large areas across regions with a very different range of salinity and sodicity.</p><p> </p><p><strong>Acknowledgments</strong></p><p>This work was developed in the scope of SOIL4EVER “Sustainable use of soil and water for improving crops productivity in irrigated areas” project supported by FCT, grant no. PTDC/ASP-SOL/28796/2017.</p><p> </p>

Soil Sampling Procedures

EDIS ◽  
2020 ◽  
Vol 2020 (1) ◽  
Author(s):  
Davie Kadyampakeni ◽  
Kelly Morgan ◽  
Arnold Schumann ◽  
Rhuanito Ferrarezi ◽  
Jamie D Burrow
Keyword(s):  
Soil Sampling ◽  
Test Results ◽  
Fertilization Program ◽  
Fact Sheet ◽  
Standard Procedures ◽  
Sampling Procedures ◽  
Soil And Water

To achieve optimal grove nutrition, citrus growers must test grove soil before beginning any fertilization program. Standard procedures for sampling, preparing, and analyzing soil should be followed for meaningful interpretations of the test results and accurate recommendations. This new two-page fact sheet, published by the UF/IFAS Department of Soil and Water Sciences, provides illustrated soil sampling procedures and tables to aid in basic interpretation of lab results. Written by Davie Kadyampakeni, Kelly Morgan, Arnold Schumann, and Rhuanito S. Ferrarezi.https://edis.ifas.ufl.edu/ss667

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