EurekaMag.com logo
+ Site Statistics
References:
53,869,633
Abstracts:
29,686,251
+ Search Articles
+ Subscribe to Site Feeds
EurekaMag Most Shared ContentMost Shared
EurekaMag PDF Full Text ContentPDF Full Text
+ PDF Full Text
Request PDF Full TextRequest PDF Full Text
+ Follow Us
Follow on FacebookFollow on Facebook
Follow on TwitterFollow on Twitter
Follow on LinkedInFollow on LinkedIn

+ Translate

An automated suction lysimeter for improved soil water sampling



An automated suction lysimeter for improved soil water sampling



Vadose Zone Journal 11.4



Leaching of chemicals (e.g., fertilizers, manure, pesticides, and petroleum products) from urban regions and areas impacted by human development is one of the main sources of underground nonpoint-source pollution. Most methods of soil water sampling are not capable of extracting representative soil water samples to determine leaching volume and solute concentrations since they fail to create normal leaching conditions in the soil. Thus the volume of soil-water collected, as well as its solute concentration, may not be accurately estimated. Sixteen units of cost effective and accurate automated lysimeters were designed and installed to measure post-harvest nitrate leaching from a rye (Secale cereale L.) cover crop field during the falls and winters of 2007 to 2009. Major parts of the electronic system were electronic controller, data logger memory, digital clock and its battery backup circuit, relays, LCD display and electronic signal conditioning interfaces for amplifying, off-setting, and digitizing the signals from vacuum sensors. The electronic system was designed to monitor soil tension every second with accuracy of 1 cm and apply the proper amount of suction to the sampling media (ceramic plate). Hourly data from soil tension and vacuum applied to the system were collected and stored by each unit. A safety system was designed for protecting the vacuum pump against unexpected major vacuum leakage events. The controller can be easily reprogrammed for different performance strategies. The automated lysimeter showed an accurate and reliable performance in both lab and field conditions. Ambient soil matric pressure and matric pressure above the samplers indicated a strong linear correlation which confirms that the lysimeter was successful in maintaining the sampler vacuum in equilibrium with soil.

(PDF emailed within 1 workday: $29.90)

Accession: 036997576

Download citation: RISBibTeXText



Related references

An Automated Suction Lysimeter for Improved Soil Water Sampling. 2013

A new mobile and easy to handle suction lysimeter for soil water sampling. Fresenius' Journal Of Analytical Chemistry. 336(1): 1-4, 1990

Nitrate determination. Soil solution sampling with a suction lysimeter. Infos Paris ( 92): 42-46, 1993

High-resolution laboratory lysimeter for automated sampling of tracers through a 0.5 m soil block. Journal of Automated Methods & Management in Chemistry 25(2): 43-49, 2008

A tensiometer/lysimeter for soil pore water sampling. Recent investigations in the zone of aeration Volume I: 389-398, 1984

A modified vacuum-pressure lysimeter for soil water sampling. Soil Science 134(3): 206-210, 1982

Automated irrigation system in real-time with water balance, soil moisture measurement and lysimeter. Agricultura Tecnica En Mexico: 4, 459-470, 2008

Suction Lysimeter Modifications to Improve Sampling Efficiency and Prevent Wildlife Damage. Vadose zone journal VZJ 5(1): 77-79, 2006

Lysimeter researches on the water economy of bare soil and soil supporting young Oak. (Report on measurements made at the Eberswalde lysimeter installation, 1949-53.).. Arch. Forstw, 3: 7/8, 645-74, 1954

Mobile suction unit for sampling soil water. Landbauforschung Voelkenrode 22(2): 159-161, 1973

All-plastic suction lysimeters for the rapid sampling of percolating soil water. New Zealand Journal of Science 19(2): 145-148, 1976

Water and heat balance of soil under a constant ground water table. Comparison between Kuronoppo soil (volcanic ash soil) and Iwatabara soil (diluvial soil) in lysimeter experiments. Transactions of the Japanese Society of Irrigation, Drainage and Reclamation Engineering (75): 20-25, 1978

A new standpipe lysimeter design for the measurement of soil matric suction. Vadose Zone Journal: 3, 919-929, 2008

Effect of soil water suction in suction lysimeters on different soil types on the dry matter production of maize in the dry year 1975. Landbauforschung Volkenrode 26(2): 122-130, 1976

An automated soil water monitoring and leachate sampling system. Paper American Society of Agricultural Engineers: er (89-2533) 167-195, 1989