An Artificial Root for Inducing Capillary Movement of Soil Moisture

Briggs, Lyman J.; McCall, A. G.

doi:10.1126/science.20.513.566

Cited by 69 publications

(28 citation statements)

References 2 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Peters and W. Durner: Large plate lysimeters for soil water collection or passively by wick lysimeters (Boll et al, 1992;Jabro et al, 2008;Gee et al, 2009). The typically applied water sampling technique is the suction-cup lysimeter, which has been used since more than one century (Briggs and McCall, 1904). One of the disadvantages of suction-cup lysimeters is their limited size, which leads to the phenomenon that in heterogeneous or structured soils most of the suction cups are bypassed by preferential flow paths (Hagedorn et al, 1999).…”

mentioning

confidence: 99%

Large zero-tension plate lysimeters for soil water and solute collection in undisturbed soils

Peters

Durner

2009

Hydrol. Earth Syst. Sci.

View full text Add to dashboard Cite

Abstract. Water collection from undisturbed unsaturated soils to estimate in situ water and solute fluxes in the field is a challenge, in particular if soils are heterogeneous. Large sampling devices are required if preferential flow paths are present. We present a modular plate system that allows installation of large zero-tension lysimeter plates under undisturbed soils in the field. To investigate the influence of the lysimeter on the water flow field in the soil, a numerical 2-D simulation study was conducted for homogeneous soils with uni-and bimodal pore-size distributions and stochastic Miller-Miller heterogeneity. The collection efficiency was found to be highly dependent on the hydraulic functions, infiltration rate, and lysimeter size, and was furthermore affected by the degree of heterogeneity. In homogeneous soils with high saturated conductivities the devices perform poorly and even large lysimeters (width 250 cm) can be bypassed by the soil water. Heterogeneities of soil hydraulic properties result into a network of flow channels that enhance the sampling efficiency of the lysimeter plates. Solute breakthrough into zero-tension lysimeter occurs slightly retarded as compared to the free soil, but concentrations in the collected water are similar to the mean flux concentration in the undisturbed soil. To validate the results from the numerical study, a dual tracer study with seven lysimeters of 1.25×1.25 m area was conducted in the field. Three lysimeters were installed underneath a 1.2 m filling of contaminated silty sand, the others deeper in the undisturbed soil. The lysimeters directly underneath the filled soil material collected water with a colCorrespondence to: A. Peters (andre.peters@tu-berlin.de) lection efficiency of 45%. The deeper lysimeters did not collect any water. The arrival of the tracers showed that almost all collected water came from preferential flow paths.

show abstract

mentioning

confidence: 99%

Large zero-tension plate lysimeters for soil water and solute collection in undisturbed soils

Peters

Durner

2009

Hydrol. Earth Syst. Sci.

View full text Add to dashboard Cite

show abstract

“…Walley et al [16] evaluated the influence of the size of tensiometer porous cup during studies of matric potential variability and concluded that this variability decreases when the size of the porous cup is increased. The technique of soil solution extractors using porous cup was first used by Brings and McCall [21]. The suction produced by solution extractors generates a soil water potential gradient around the porous cup, which is directly related to the radius of influence of the cup [22].…”

Section: Introductionmentioning

confidence: 99%

Application of γ-ray computed tomography to evaluate the radius of influence of soil solution extractors and tensiometers

Pires

Arthur

Bacchi

et al. 2007

Nuclear Instruments and Methods in Physics Research Section B:

View full text Add to dashboard Cite

“…K20), the application of K2SO increased the potassium content of the tissues which has resulted in increased utilization of starch. 15. The reciprocal relationship between potassium and nitrogen of plants found by some investigators is discussed.…”

Section: Thomias: Composition and Responses Of Apple Treesmentioning

confidence: 99%

“…As the plant grows the carbon dioxide evolved in the respiration of the roots becomes the dominating factor in the dissolution of the soil particles (207), furthering the formation of these concentric zones of decreasing concentration. It follows that one of the fundamental problems in studies on the interrelationship between plant and soil is the question whether plants can or cannot absorb colloids (204), and whether the actual soil solution can be obtained by any of the numerous procedures proposed to achieve this purpose, such as water extraction (17,19,68,217), pressure (95,125,162,216), displacement (31, 74,148,171,216), centrifugal (15,16), and freezing-point (64) methods.…”

mentioning

confidence: 99%

COMPOSITION OF CURRENT AND PREVIOUS SEASON'S BRANCH GROWTH IN RELATION TO VEGETATIVE AND REPRODUCTIVE RESPONSES IN PYRUS MALUS L

Thomas¹

1932

Plant Physiol.

View full text Add to dashboard Cite

An Artificial Root for Inducing Capillary Movement of Soil Moisture

Cited by 69 publications

References 2 publications

Large zero-tension plate lysimeters for soil water and solute collection in undisturbed soils

Large zero-tension plate lysimeters for soil water and solute collection in undisturbed soils

Application of γ-ray computed tomography to evaluate the radius of influence of soil solution extractors and tensiometers

COMPOSITION OF CURRENT AND PREVIOUS SEASON'S BRANCH GROWTH IN RELATION TO VEGETATIVE AND REPRODUCTIVE RESPONSES IN PYRUS MALUS L

Contact Info

Product

Resources

About