Results 311 to 320 of about 309,903 (363)

Soil Water Repellency: Effects of Water Content, Temperature, and Particle Size

Soil Science Society of America Journal, 1999
Abstract Water repellency (WR) of soils is a common problem in many countries. It can cause a reduction in the rate of water infiltration into soils as well as an unstable water flow within the soil matrix. Water repellency has typically been related to dry soils.
de Jonge, Lis Wollesen, Jacobsen, Ole Hørbye, Moldrup, P.   +2 more
openaire   +3 more sources

Water Repellency and Critical Soil Water Content in a Dune Sand

Soil Science Society of America Journal, 2001
Assessments of water repellency of soils are commonly made on air‐dried or oven‐dried samples, without considering the soil water content. The objectives of this study were to examine the spatial and temporal variability of soil water content, actual water repellency over short distances, and the variations in critical soil water ...
Dekker, L.W., Doerr, S.H., Oostindie, K., Ziogas, A.K., Ritsema, C.J.   +4 more
openaire   +4 more sources

Estimating soil water content from soil strength

Soil and Tillage Research, 1994
Abstract Variable rate application technology requires real time estimates of field water contents. This study was conducted to evaluate soil strength as a possible indicator of soil water content. The study involved measurement of soil strength with flat tip and cone penetrometers on laboratory packed soil cores.
L.N. Mielke, W.L. Powers, S. Badri, A.J. Jones   +3 more
openaire   +1 more source

Research on influence of soil water content on soil resistivity

2012 International Conference on Lightning Protection (ICLP), 2012
This paper is prepared based on the monitoring data of the Meteorological Bureau of Hechuan District, Chongqing for the whole year by the automatic monitoring system on soil resistivity and soil water content of the observation site. The influence of soil water content on water resistivity is analyzed, the correlation between the soil resistivity on ...
null Li Liangfu, null Qin Binquan
openaire   +1 more source

Herbicide Equilibrium in Soils in Relation to Soil Water Content

Weed Science, 1969
The concept of herbicide partition into adsorbed and solution phases in the soil was utilized to predict the effect of soil water content on the concentration of herbicide in solution. Calculated predictions based on measured partition coefficients and water contents were tested experimentally by equilibrating 2-chloro-4-(ethylamino)-6-(isopropylamino)-
R. E. Green, S. R. Obien
openaire   +1 more source

Comparing the spatio-temporal variations of soil water content and soil free water content at the hillslope scale

CATENA, 2018
Abstract The spatio-temporal dynamics of soil water are the key critical zone processes that control hydrological, biogeochemical and environmental processes at various spatial scales. Soil water content (SWC), which has been widely adopted in traditional studies, does not consider the energy state of soil water and thus cannot directly reflect the ...
Xiaoming Lai, Zhiwen Zhou, Qing Zhu, Kaihua Liao   +3 more
openaire   +1 more source

The Dependence of Bare Soil Albedo on Soil Water Content

Journal of Applied Meteorology, 1975
Abstract Simple albedo measurement may prove useful for sensing surface soil water content and as a research tool in the study of evaporation of water from soil. Intensive concurrent measurements of the albedo and soil water content of a drying bare soil indicate that albedo, normalized for sun zenith angle effects, is a linear function of the soil ...
S. B. Idso, R. D. Jackson, R. J. Reginato, B. A. Kimball, F. S. Nakayama   +4 more
openaire   +1 more source

Spectrophotometric Determination of Soil Water Content

Soil Science Society of America Journal, 1972
Abstract The absorbance at 1.94µ by a soil‐methanol extract was used for measuring the soil water contents of three different textured soils. A linear relation between absorbance and soil water content was adequate for moisture determinations ranging from air dry to the moisture equivalent. For Quincy loamy sand and Barnes loam soils,
S. A. Bowers, S. J. Smith
openaire   +1 more source

Soil-Water Content and Its Measurement

2018
Soil-water content is the basic state characteristic of soil; it expresses the relative quantity of water in the soil. Soil-water content can be expressed as the ratio of water amount and the amount of soil. The most frequently used term is volumetric soil-water content, which is the ratio of water volume and soil volume containing water.
Viliam Novák, Hana Hlaváčiková
openaire   +1 more source

Soil Water Content

2007
G Parkin, G Clarke Topp, Ty Ferre´
openaire   +2 more sources