Leaf surface wetness duration measurements by radiogauge and electronic techniques

Barthakur, N N

doi:10.1080/00103628709367829

Title: Leaf surface wetness duration measurements by radiogauge and electronic techniques

Full Record
Other Related Research

Abstract

Comparative measurements of leaf surface wetness duration were made by a beta-ray gauge and an electronic sensor under various wind conditions in the laboratory. Under certain conditions, surface wetness duration measured by the electronic sensor was about 35 minutes shorter than that by the beta-ray gauge. Fair agreement between the sensors at low wind speeds was achieved when the wire grid of the electronic sensor was mounted on a microscope cover glass. Realistic leaf surface wetness duration can be obtained with a beta-ray gauge as it utilizes the attached leaf surfaces rather than artificial ones used on the electronic sensor.

Authors:: Barthakur, N N

Publication Date:: Thu Jan 01 00:00:00 EST 1987

Research Org.:: MacDonald College of McGill Univ., Ste. Anne de Bellevue, Quebec

OSTI Identifier:: 6070270

Resource Type:: Journal Article

Journal Name:: Commun. Soil Sci. Plant Anal.; (United States)

Additional Journal Information:: Journal Volume: 18:4

Country of Publication:: United States

Language:: English

Subject:: 60 APPLIED LIFE SCIENCES; EVAPORATION; MONITORS; WATER; BETA RADIOGRAPHY; ELECTRIC MEASURING INSTRUMENTS; ELECTRONIC CIRCUITS; LEAVES; WIND; ELECTRICAL EQUIPMENT; EQUIPMENT; HYDROGEN COMPOUNDS; INDUSTRIAL RADIOGRAPHY; MEASURING INSTRUMENTS; OXYGEN COMPOUNDS; PHASE TRANSFORMATIONS; 553002* - Agriculture & Food Technology- Horticulture- (1987-)

Citation Formats


                    Barthakur, N N. Leaf surface wetness duration measurements by radiogauge and electronic techniques.  United States: N. p., 1987. 
        Web.  doi:10.1080/00103628709367829.

Copy to clipboard


                    Barthakur, N N. Leaf surface wetness duration measurements by radiogauge and electronic techniques.  United States.  https://doi.org/10.1080/00103628709367829

Copy to clipboard


                    Barthakur, N N. 1987.  
        "Leaf surface wetness duration measurements by radiogauge and electronic techniques".  United States.  https://doi.org/10.1080/00103628709367829.

Copy to clipboard


                    
@article{osti_6070270,

  title        = {Leaf surface wetness duration measurements by radiogauge and electronic techniques},

  author       = {Barthakur, N N},

  abstractNote = {Comparative measurements of leaf surface wetness duration were made by a beta-ray gauge and an electronic sensor under various wind conditions in the laboratory. Under certain conditions, surface wetness duration measured by the electronic sensor was about 35 minutes shorter than that by the beta-ray gauge. Fair agreement between the sensors at low wind speeds was achieved when the wire grid of the electronic sensor was mounted on a microscope cover glass. Realistic leaf surface wetness duration can be obtained with a beta-ray gauge as it utilizes the attached leaf surfaces rather than artificial ones used on the electronic sensor.},

  doi          = {10.1080/00103628709367829},

  url          = {https://www.osti.gov/biblio/6070270},
  journal      = {Commun. Soil Sci. Plant Anal.; (United States)},
number       = ,

  volume       = 18:4,

  place        = {United States},

  year         = {Thu Jan 01 00:00:00 EST 1987},

  month        = {Thu Jan 01 00:00:00 EST 1987}

}

Copy to clipboard

Journal Article:

https://doi.org/10.1080/00103628709367829

Other availability

Find in Google Scholar

Search WorldCat to find libraries that may hold this journal

Save / Share:

Export Metadata

Save to My Library

Similar records in OSTI.GOV collections:

Leaf surface traits and water storage retention affect photosynthetic responses to leaf surface wetness among wet tropical forest and semiarid savanna plants

Journal Article Aparecido, Luiza; Miller, Gretchen; Cahill, Anthony; ... - Tree Physiology

While it is reasonable to predict that photosynthetic rates are inhibited while leaves are wet, leaf gas exchange measurements during wet conditions are challenging to obtain due to equipment limitations and the complexity of canopy-atmosphere interactions in forested environments. Thus, the objective of this study was to evaluate responses of seven tropical and three semiarid savanna plant species to simulated leaf wetness and test the hypotheses that (i) leaf wetness reduces photosynthetic rates (Anet), (ii) leaf traits explain different responses among species and (iii) leaves from wet environments are better adapted for wet leaf conditions than those from drier environments.more »« less
Cited by 38
https://doi.org/10.1093/treephys/tpx092

Full Text Available
A Synchronized Sensor Array for Remote Monitoring of Avian and Bat Interactions with Offshore Renewable Energy Facilities

Technical Report Suryan, Robert; Albertani, Roberto; Polagye, Brian

Wind energy production in the U.S. is projected to increase to 35% of our nation’s energy by 2050. This substantial increase in the U.S. is only a portion of the global wind industry growth, as many countries strive to reduce greenhouse gas emissions. A major environmental concern and potential market barrier for expansion of wind energy is bird and bat mortality from impacts with turbine blades, towers, and nacelles. Carcass surveys are the standard protocol for quantifying mortality at onshore sites. This method is imperfect, however, due to survey frequency at remote sites, removal of carcasses by scavengers between surveys,more »« less
https://doi.org/10.2172/1323469

Full Text Available
Lead-free solders for electronics applications: Wetting analysis

Conference Vianco, P; Hosking, F; Frear, D

The fabrication of electronic systems has relied upon eutectic tin-lead solder for the attachment of components to printed wiring boards. Higher service temperatures are approaching the durability limits of the eutectic solder. The tin-rich, lead-free solders are being actively studied as alternate alloys. Experiments that examined the wettability of 95Sn-5Sb (wt %), 95.5Sn-4.0Cu-0.5Ag, 96.5Sn-3.5Ag, and the control solder, 60Sn-40Pb, on oxygen-free, high conductivity copper were performed. A rosin-based, mildly activated (RMA) flux and three water soluble, organic acid fluxes were used in the wetting balance/meniscometer measurements. The 95.5Sn-4.0Cu-0.5Ag and 95Sn- 5Sb alloys exhibited good wetting, with contact angles of 35{degree}more »« less
Comparison of tree transpiration under wet and dry canopy conditions in a Costa Rican premontane tropical forest

Journal Article Aparecido, Luiza; Miller, Gretchen; Cahill, Anthony; ... - Hydrological Processes

Spatial and temporal variation in wet canopy conditions following precipitation events can influence processes such as transpiration and photosynthesis, which can be additionally enhanced as upper canopy leaves dry more rapidly than the understory following each event. As part of a larger study aimed at improving land surface modelling of evapotranspiration processes in wet tropical forests, we compared transpiration among trees with exposed and shaded crowns under both wet and dry canopy conditions in central Costa Rica, which has an average 420 mm annual rainfall. Transpiration was estimated for 5 months using 43 sap flux sensors in eight dominant, tenmore »« less
Cited by 54
https://doi.org/10.1002/hyp.10960

Full Text Available
BETA RAY GAUGING TECHNIQUE FOR MEASURING LEAD WATER CONTENT CHANGES AND MOISTURE STATUS OF PLANTS

Journal Article Nakayama, F; Ehrler, W - Plant Physiology (U.S.)

The beta ray gaging technique for determining leaf water content and internal water status of plants was investigated. Promethium-147 was shown to provide beta rays of the right energy to give the best response to water changes in the cotton leaves with thicknesses of 15 to 35 mg cm/sup -2/ Equipment construction and gauge performance were checked using a 2 mu C promethium-147 source on plants under controlled environmental conditions. The instrument showed reliable responses to rapid change in water conditions of plants. With proper calibrations, leaf water and internal water (relative turgidity or diffusion pressure deficit) changes can bemore » followed. (auth)« less
https://doi.org/10.1104/pp.39.1.95

Similar Records