bioCEED, CEMPE and MatRIC
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3.2.4 Miscellaneous Methods for Measuring Matric or Water Potential
A variety of techniques to measure matric potential or water potential in the laboratory and in the field are described in this section. The techniques described herein require equilibration of some medium whose matric or water potential can be determined from previous calibration or can be measured directly. Under equilibrium conditions the matric or water potential of the medium is equal to t...
متن کاملMatric potentials of leaves.
A pressure chamber was used to measure matric potentials of frozen and thawed leaves. Significant matric potentials were demonstrated in sunflower (Helianthus annuus L.), yew (Taxus cuspidata Sieb. and Zucc.), and rhododendron (Rhododendron roseum Rehd.). Matric potentials were particularly negative in rhododendron and were correlated with the amount of cell wall present and with the volume of ...
متن کاملInfluence of Matric Potential on Survival and Activity of Genetically Engineered Ralstonia eutropha H850Lr
Although the application of biodegradative genetically engineered micro organisms (GEMs) for bioremediation is very promising, the risks of their release should be assessed before their introduction into the environment. Lux-marked Ralstonia eutropha H850Lr (formerly Alcaligenes eutrophus H850Lr) was introduced into sterile and non-sterile soil microcosms at matric potentials ?2.11, ?30, ?750, ...
متن کاملOsmolyte dynamics and microbial communities vary in response to osmotic more than matric water deficit gradients in two soils
Sodium chloride and other osmotically active molecules are often applied to microbial cultures or soils to describe microbial responses and adaptation to desiccation in soils. However, salts and other osmolytes may have different effects on microorganisms than matric deficits caused by soil drying. It was thus hypothesized that low matric and osmotic potentials would have different effects on s...
متن کاملEstimating penetrometer resistance and matric poten- tial from the velocities of shear and compression waves
Estimating penetrometer resistance and matric potential from the velocities of shear and compression waves Journal Article How to cite: Gao, W.; Watts, W. R.; Ren, T.; Shin, H.; Taherzadeh, S.; Attenborough, K.; Jenkins, M. and Whalley, W. R. (2013). Estimating penetrometer resistance and matric potential from the velocities of shear and compression waves. Soil Science Society of America Journa...
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