ICT International

Advancing soil, plant and environmental decision making

User manuals and software for the PSY1 Psychrometer

Technical Specifications
Downloads Available
Psychrometers publications
Amrutha, S., Parveen, A. B. M., Muthupandi, M., Vishnu, K., Bisht, S. S., Sivakumar, V., & Ghosh Dasgupta, M. (2021). Characterization of Eucalyptus camaldulensis clones with contrasting response to short-term water stress response. Acta Physiologiae Plantarum, 43(1), 14. https://doi.org/10.1007/s11738-020-03175-0
Amrutha, S., Muneera Parveen, A. B., Muthupandi, M., Sivakumar, V., Nautiyal, R., & Dasgupta, M. G. (2019). Variation in morpho-physiological, biochemical and molecular responses of two Eucalyptus species under short-term water stress. Acta Botanica Croatica, 78(2), 125–134. https://doi.org/10.2478/botcro-2019-0021
Avila, R. T., Cardoso, A. A., Batz, T. A., Kane, C. N., DaMatta, F. M., & McAdam, S. A. M. (2021). Limited plasticity in embolism resistance in response to light in leaves and stems in species with considerable vulnerability segmentation. Physiologia Plantarum, n/a(n/a). https://doi.org/10.1111/ppl.13450
Avila, R. T., Guan, X., Kane, C. N., Cardoso, A. A., Batz, T. A., DaMatta, F. M., Jansen, S., & McAdam, S. A. M. (2022). Xylem embolism spread is largely prevented by interconduit pit membranes until the majority of conduits are gas-filled. Plant, Cell & Environment, 45(4), 1204–1215. https://doi.org/10.1111/pce.14253
Benettin, P., Nehemy, M. F., Asadollahi, M., Pratt, D., Bensimon, M., McDonnell, J. J., & Rinaldo, A. (2021). Tracing and Closing the Water Balance in a Vegetated Lysimeter. Water Resources Research, 57(4), e2020WR029049. https://doi.org/10.1029/2020WR029049
Bourbia, I., Pritzkow, C., & Brodribb, T. J. (2021). Herb and conifer roots show similar high sensitivity to water deficit. Plant Physiology, kiab207. https://doi.org/10.1093/plphys/kiab207
Bourbia, I., Carins-Murphy, M. R., Gracie, A., & Brodribb, T. J. (2020). Xylem cavitation isolates leaky flowers during water stress in pyrethrum. New Phytologist, 227(1), 146–155. https://doi.org/10.1111/nph.16516
Brodribb, T., Brodersen, C. R., Carriqui, M., Tonet, V., Rodriguez Dominguez, C., & McAdam, S. (2021). Linking xylem network failure with leaf tissue death. New Phytologist, 232(1), 68–79. https://doi.org/10.1111/nph.17577
Brodribb, T. J., Carriqui, M., Delzon, S., & Lucani, C. (2017). Optical Measurement of Stem Xylem Vulnerability. Plant Physiology, 174(4), 2054–2061. https://doi.org/10.1104/pp.17.00552
Brodribb, T. J., Carriquí, M., Delzon, S., McAdam, S. a. M., & Holbrook, N. M. (2020). Advanced vascular function discovered in a widespread moss. Nature Plants, 6(3), 273–279. https://doi.org/10.1038/s41477-020-0602-x
Caplan, D., Dixon, M., & Zheng, Y. (2019). Increasing Inflorescence Dry Weight and Cannabinoid Content in Medical Cannabis Using Controlled Drought Stress. HortScience, 54(5), 964–969. https://doi.org/https://doi.org/10.21273/HORTSCI13510-18
Cardoso, A. A., Brodribb, T. J., Kane, C. N., DaMatta, F. M., & McAdam, S. A. M. (2020). Osmotic adjustment and hormonal regulation of stomatal responses to vapour pressure deficit in sunflower. AoB PLANTS, 12(4), plaa025. https://doi.org/10.1093/aobpla/plaa025
Cecilia, B., Francesca, A., Dalila, P., Carlo, S., Antonella, G., Francesco, F., Marco, R., & Mauro, C. (2022). On-line monitoring of plant water status: Validation of a novel sensor based on photon attenuation of radiation through the leaf. Science of The Total Environment, 152881. https://doi.org/10.1016/j.scitotenv.2021.152881
Cermák, J., Nadezhdina, N., Trcala, M., & Simon, J. (2015). Open field-applicable instrumental methods for structural and functional assessment of whole trees and stands. IForest – Biogeosciences and Forestry, 8(3), 226. https://doi.org/10.3832/ifor1116-008
Charrier, G., Burlett, R., Gambetta, G. A., Delzon, S., Domec, J. C., & Beaujard, F. (2017). Monitoring Xylem Hydraulic Pressure in Woody Plants. Bio-Protocol, 7(20), e2580. https://doi.org/10.21769/BioProtoc.2580
Charrier, G., Torres-Ruiz, J. M., Badel, E., Burlett, R., Choat, B., Cochard, H., Delmas, C. E. L., Domec, J.-C., Jansen, S., King, A., Lenoir, N., Martin-StPaul, N., Gambetta, G. A., & Delzon, S. (2016). Evidence for Hydraulic Vulnerability Segmentation and Lack of Xylem Refilling under Tension. Plant Physiology, 172(3), 1657–1668. https://doi.org/10.1104/pp.16.01079
Chen, Y.-J., Maenpuen, P., Zhang, Y.-J., Barai, K., Katabuchi, M., Gao, H., Kaewkamol, S., Tao, L.-B., & Zhang, J.-L. (2021). Quantifying vulnerability to embolism in tropical trees and lianas using five methods: can discrepancies be explained by xylem structural traits? New Phytologist, 229(2), 805–819. https://doi.org/10.1111/nph.16927
Corso, D., Delzon, S., Lamarque, L. J., Cochard, H., Torres-Ruiz, J. M., King, A., & Brodribb, T. (2020). Neither xylem collapse, cavitation, or changing leaf conductance drive stomatal closure in wheat. Plant, Cell & Environment, 43(4), 854–865. https://doi.org/10.1111/pce.13722
Creek, D., Lamarque, L. J., Torres-Ruiz, J. M., Parise, C., Burlett, R., Tissue, D. T., & Delzon, S. (2020). Xylem embolism in leaves does not occur with open stomata: evidence from direct observations using the optical visualization technique. Journal of Experimental Botany, 71(3), 1151–1159. https://doi.org/10.1093/jxb/erz474
Cuellar-Murcia, C. A., & Suárez-Salazar, J. C. (2018). Sap flow and water potential in tomato plants (Solanum lycopersicum L.) under greenhouse conditions/Flujo de savia y potencial hídrico en plantas de tomate (Solanum lycopersicum L.) bajo condiciones de invernadero. Revista Colombiana de Ciencias Hortícolas, 12, 104–112. https://doi.org/10.17584/rcch.2018v12i1.7316
Dainese, R., & Tarantino, A. (2021). Measurement of plant xylem water pressure using the high-capacity tensiometer and implications for the modelling of soil–atmosphere interaction. Géotechnique, 71(5), 441–454. https://doi.org/10.1680/jgeot.19.P.153
Dainese, R., Lima Lopes, B. de C. F., Tedeschi, G., Lamarque, L. J., Delzon, S., Fourcaud, T., & Tarantino, A. (2021). Cross-validation on saplings of High-Capacity Tensiometer and Thermocouple Psychrometer for continuous monitoring of xylem water potential. Journal of Experimental Botany, erab412. https://doi.org/10.1093/jxb/erab412
Dainese, R., Lopes, B. de C. F. L., Fourcaud, T., & Tarantino, A. (2021). Evaluation of instruments for monitoring the soil–plant continuum. Geomechanics for Energy and the Environment, 100256. https://doi.org/10.1016/j.gete.2021.100256
Deng, L., Li, P., Chu, C., Ding, Y., & Wang, S. (2020). Symplasmic phloem unloading and post-phloem transport during bamboo internode elongation. Tree Physiology, 40(3), 391–412. https://doi.org/10.1093/treephys/tpz140
Deng, Z., Guan, H., Hutson, J., Forster, M. A., Wang, Y., & Simmons, C. T. (2017). A vegetation-focused soil-plant-atmospheric continuum model to study hydrodynamic soil-plant water relations. Water Resources Research, 53(6), 4965–4983. https://doi.org/10.1002/2017WR020467
Dixon, M. A., & Tyree, M. T. (1984). A new stem hygrometer, corrected for temperature gradients and calibrated against the pressure bomb. Plant, Cell & Environment, 7(9), 693–697. https://doi.org/10.1111/1365-3040.ep11572454
Epron, D., Kamakura, M., Azuma, W., Dannoura, M., & Kosugi, Y. (2021). Diurnal variations in the thickness of the inner bark of tree trunks in relation to xylem water potential and phloem turgor. Plant-Environment Interactions, 2(3), 112–124. https://doi.org/10.1002/pei3.10045
Espinosa, C. M. O., Salazar, J. C. S., Churio, J. O. R., & Mora, D. S. (2021). Los sistemas agroforestales y la incidencia sobre el estatus hídrico en árboles de cacao. Biotecnología en el Sector Agropecuario y Agroindustrial, 19(1), 256–267. https://doi.org/10.18684/bsaa.v19.n1.2021.1623
Forster, M. (2015). Measuring water stress for irrigation efficiency. Irrigation Australia: The Official Journal of Irrigation Australia. https://search.informit.org/doi/abs/10.3316/INFORMIT.201053890291709
Gauthey, A., Peters, J. M. R., Carins-Murphy, M. R., Rodriguez-Dominguez, C. M., Li, X., Delzon, S., King, A., López, R., Medlyn, B. E., Tissue, D. T., Brodribb, T. J., & Choat, B. (2020). Visual and hydraulic techniques produce similar estimates of cavitation resistance in woody species. New Phytologist, 228(3), 884–897. https://doi.org/10.1111/nph.16746
Gauthey, A., Peters, J. M. R., Lòpez, R., Carins-Murphy, M. R., Rodriguez-Dominguez, C. M., Tissue, D. T., Medlyn, B. E., Brodribb, T. J., & Choat, B. (2022). Mechanisms of xylem hydraulic recovery after drought in Eucalyptus saligna. Plant, Cell & Environment, 45(4), 1216–1228. https://doi.org/10.1111/pce.14265
Gauthey, A., Backes, D., Balland, J., Alam, I., Maher, D. T., Cernusak, L. A., Duke, N. C., Medlyn, B. E., Tissue, D. T., & Choat, B. (2022). The Role of Hydraulic Failure in a Massive Mangrove Die-Off Event. Frontiers in Plant Science, 13. https://www.frontiersin.org/articles/10.3389/fpls.2022.822136
Gonzalez-Fuentes, J. A., Shackel, K., Heinrich Lieth, J., Albornoz, F., Benavides-Mendoza, A., & Evans, R. Y. (2016). Diurnal root zone temperature variations affect strawberry water relations, growth, and fruit quality. Scientia Horticulturae, 203, 169–177. https://doi.org/https://doi.org/10.1016/j.scienta.2016.03.039
Guan, X., Pereira, L., McAdam, S. A. M., Cao, K.-F., & Jansen, S. (2021). No gas source, no problem: Proximity to pre-existing embolism and segmentation affect embolism spreading in angiosperm xylem by gas diffusion. Plant, Cell & Environment, 44(5), 1329–1345. https://doi.org/10.1111/pce.14016
Guan, X., Werner, J., Cao, K.-F., Pereira, L., Kaack, L., McAdam, S. a. M., & Jansen, S. (2022). Stem and leaf xylem of angiosperm trees experiences minimal embolism in temperate forests during two consecutive summers with moderate drought. Plant Biology, n/a(n/a). https://doi.org/10.1111/plb.13384
Gullo, G., Dattola, A., Vonella, V., & Zappia, R. (2020). Effects of two reflective materials on gas exchange, yield, and fruit quality of sweet orange tree Citrus sinensis (L.) Osb. European Journal of Agronomy, 118, 126071. https://doi.org/10.1016/j.eja.2020.126071
Guo, J. S., Gear, L., Hultine, K. R., Koch, G. W., & Ogle, K. (2020). Non-structural carbohydrate dynamics associated with antecedent stem water potential and air temperature in a dominant desert shrub. Plant, Cell & Environment, 43(6), 1467–1483. https://doi.org/10.1111/pce.13749
Guo, J. S., Hultine, K. R., Koch, G. W., Kropp, H., & Ogle, K. (2020). Temporal shifts in iso/anisohydry revealed from daily observations of plant water potential in a dominant desert shrub. New Phytologist, 225(2), 713–726. https://doi.org/10.1111/nph.16196
Hallmark, A. J., Maurer, G. E., Pangle, R. E., & Litvak, M. E. (2021). Watching plants’ dance: movements of live and dead branches linked to atmospheric water demand. Ecosphere, 12(8), e03705. https://doi.org/10.1002/ecs2.3705
Harrison Day, B. L., Carins-Murphy, M. R., & Brodribb, T. J. (2021). Reproductive water supply is prioritized during drought in tomato. Plant, Cell & Environment, n/a(n/a). https://doi.org/10.1111/pce.14206
Hodgson-Kratky, K. J. M., Stoffyn, O. M., & Wolyn, D. J. (2017). Recurrent Selection for Improved Germination under Water Stress in Russian Dandelion. Journal of the American Society for Horticultural Science, 142(2), 85–91. https://doi.org/10.21273/JASHS03941-16
Holtzman, N. M., Anderegg, L. D. L., Kraatz, S., Mavrovic, A., Sonnentag, O., Pappas, C., Cosh, M. H., Langlois, A., Lakhankar, T., Tesser, D., Steiner, N., Colliander, A., Roy, A., & Konings, A. G. (2021). L-band vegetation optical depth as an indicator of plant water potential in a temperate deciduous forest stand. Biogeosciences, 18(2), 739–753. https://doi.org/10.5194/bg-18-739-2021
Hoste, P. (2011). Ecophysiology of mangrove in Australia: Hydraulic functioning. University of Ghent.
Iwasaki, N., Hori, K., & Ikuta, Y. (2019). Xylem plays an important role in regulating the leaf water potential and fruit quality of Meiwa kumquat (Fortunella crassifolia Swingle) trees under drought conditions. Agricultural Water Management, 214, 47–54. https://doi.org/10.1016/j.agwat.2018.12.026
Jerszurki, D., Couvreur, V., Maxwell, T., Silva, L. de C. R., Matsumoto, N., Shackel, K., de Souza, J. L. M., & Hopmans, J. (2017). Impact of root growth and hydraulic conductance on canopy carbon-water relations of young walnut trees (Juglans regia L.) under drought. Scientia Horticulturae, 226, 342–352. https://doi.org/10.1016/j.scienta.2017.08.051
Jiang, G.-F., Brodribb, T. J., Roddy, A. B., Lei, J.-Y., Si, H.-T., Pahadi, P., Zhang, Y.-J., & Cao, K.-F. (2021). Contrasting Water Use, Stomatal Regulation, Embolism Resistance, and Drought Responses of Two Co-Occurring Mangroves. Water, 13(14), 1945. https://doi.org/10.3390/w13141945
Johnson, K. M., Brodersen, C., Carins-Murphy, M. R., Choat, B., & Brodribb, T. J. (2020). Xylem Embolism Spreads by Single-Conduit Events in Three Dry Forest Angiosperm Stems. Plant Physiology, 184(1), 212–222. https://doi.org/10.1104/pp.20.00464
Johnson, K. M., Jordan, G. J., & Brodribb, T. J. (2018). Wheat leaves embolized by water stress do not recover function upon rewatering. Plant, Cell & Environment, 41(11), 2704–2714. https://doi.org/10.1111/pce.13397
Johnson, K. M., Lucani, C., & Brodribb, T. J. (2022). In vivo monitoring of drought-induced embolism in Callitris rhomboidea trees reveals wide variation in branchlet vulnerability and high resistance to tissue death. New Phytologist, 233(1), 207–218. https://doi.org/10.1111/nph.17786
Jorda, H., Ahmed, M. A., Javaux, M., Carminati, A., Duddek, P., Vetterlein, D., & Vanderborght, J. (2022). Field scale plant water relation of maize (Zea mays) under drought – impact of root hairs and soil texture. Plant and Soil, 478(1), 59–84. https://doi.org/10.1007/s11104-022-05685-x
Combined Instrument Software (CIS) Installation Instructions

Combined Instrument Software (CIS) requires additional Microsoft software installed, as well as driver for the USB Comm Port.

CIS and Instrument Installation Instruction:

  1. Ensure the instrument is not connected to the computer.
  2. Install the “CDM v2.12.28 WHQL: Certified” Virtual Com Port Driver found here: https://ftdichip.com/wp-content/uploads/2021/08/CDM212364_Setup.zip
  3. Download and install (For Windows 10 AMD/Intel) the “Microsoft Visual C++ 2010 Redistributable Package. This is available from the Microsoft download page: https://www.microsoft.com/en-au/download/details.aspx?id=26999
  4. Download and Install both the vcredist_x86.exe and vcredist_x64.exe packages from the pop up screen.
  5. Install the ICT Combined Instrument Software:
    1. Select “No” to warning about completely removing existing installations and all of its components.
    2. Select “Next”
    3. Change the install location from “\ICT International\ICT Instrument\” to “\ICT International\ICT Instrument\
    4. Select “Install”
    5. Untick “Run ICT Instrument” to prevent opening the application whilst changing the shortcut name (see below)
    6. Select “Finish”
  6. On the Desktop of your PC, change the file name of “ICT Instrument” to “ICT CIS”
  7. Open this shortcut, and confirm on the left of the software that it displays “”