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User manuals and software for the PSY1 Psychrometer

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Psychrometers publications
Delval, L., Vanderborght, J., & Javaux, M. (2025). Combination of plant and soil water potential monitoring and modelling demonstrates soil-root hydraulic disconnection during drought. Plant and Soil, 511(1), 1449–1472. https://doi.org/10.1007/s11104-024-07062-2
Song, J., Trueba, S., Yin, X.-H., Cao, K.-F., Brodribb, T. J., & Hao, G.-Y. (2022). Hydraulic vulnerability segmentation in compound-leaved trees: Evidence from an embolism visualization technique. Plant Physiology, 189(1), 204–214. https://doi.org/10.1093/plphys/kiac034
Dainese, R., De Cfl Lopes, B., Tedeschi, G., Lamarque, L. J., Delzon, S., Fourcaud, T., & Tarantino, A. (2022). Cross-validation of the high-capacity tensiometer and thermocouple psychrometer for continuous monitoring of xylem water potential in saplings. Journal of Experimental Botany, 73(1), 400–412. https://doi.org/10.1093/jxb/erab412
Smith-Martin, C. M., Muscarella, R., Ankori-Karlinsky, R., Delzon, S., Farrar, S. L., Salva-Sauri, M., Thompson, J., Zimmerman, J. K., & Uriarte, M. (2022). Hydraulic traits are not robust predictors of tree species stem growth during a severe drought in a wet tropical forest. Functional Ecology, n/a(n/a). https://doi.org/10.1111/1365-2435.14235
Rodriguez-Dominguez, C. M., Carins-Murphy, M. R., Sebastian-Azcona, J., & Brodribb, T. J. (2025). Stem water potential measurements obtained using standard methodologies diverge under extreme drought in tomato and grapevine. Plant Physiology, kiaf591. https://doi.org/10.1093/plphys/kiaf591
Bucior, E. R., Sorensen, R. B., McIntyre, J. S., Cardoso, A. A., Taggart, M. J., & Lamb, M. C. (2025). Agronomic implications of diflufenzopyr application in peanut: transient physiological responses and sustained yield performance. Journal of Crop Science and Biotechnology. https://doi.org/10.1007/s12892-025-00320-4
Harrison Day, B. L., Brodersen, C. R., & Brodribb, T. J. (2024). Weak link or strong foundation? Vulnerability of fine root networks and stems to xylem embolism. New Phytologist, n/a(n/a). https://doi.org/10.1111/nph.20115
Losso, A., Gauthey, A., Mayr, S., & Choat, B. (2024). Foliar Water Uptake Supports Water Potential Recovery but Does Not Affect Xylem Sap Composition in Two Salt-Secreting Mangroves. Plant, Cell & Environment, n/a(n/a). https://doi.org/10.1111/pce.15332
Goff, G. S., Kerhoulas, L. P., Beckmann, J. J., Kerhoulas, N. J., Kane, J. M., & Sherriff, R. L. (2025). Influences of conifer encroachment and removal on oak woodland ecophysiology and biodiversity—a case study from northern California, U.S.A. Restoration Ecology, 33(3), e14361. https://doi.org/10.1111/rec.14361
Bourbia, I., Pritzkow, C., & Brodribb, T. J. (2021). Herb and conifer roots show similar high sensitivity to water deficit. Plant Physiology, 186(4), 1908–1918. https://doi.org/10.1093/plphys/kiab207
De Boeck, K., & Steppe, K. (2025). Revised method for constructing acoustic vulnerability curves in trees. Tree Physiology, tpaf001. https://doi.org/10.1093/treephys/tpaf001
Zhang, Z., Guan, H., Veneklaas, E., Singha, K., & Batelaan, O. (2025). Revealing Seasonal Plasticity of Whole-Plant Hydraulic Properties Using Sap-Flow and Stem Water-Potential Monitoring. EGUsphere, 1–27. https://doi.org/10.5194/egusphere-2025-749
Biruk, L. N., Tomasella, M., Petruzzellis, F., & Nardini, A. (2025). Better safe than sorry: the unexpected drought tolerance of a wetland plant (Cyperus alternifolius L.). Physiologia Plantarum, 177(1), e70027. https://doi.org/10.1111/ppl.70027
Martinetti, S., Molnar, P., Carminati, A., & Floriancic, M. G. (2025). Contrasting the soil–plant hydraulics of beech and spruce by linking root water uptake to transpiration dynamics. Tree Physiology, 45(1), tpae158. https://doi.org/10.1093/treephys/tpae158
Delval, L., Vanderborght, J., & Javaux, M. (2024). Combination of plant and soil water potential monitoring and modelling demonstrates soil-root hydraulic disconnection during drought. Plant and Soil. https://doi.org/10.1007/s11104-024-07062-2
Detti, C., Gori, A., Azzini, L., Nicese, F. P., Alderotti, F., Lo Piccolo, E., Stella, C., Ferrini, F., & Brunetti, C. (2024). Drought tolerance and recovery capacity of two ornamental shrubs: Combining physiological and biochemical analyses with online leaf water status monitoring for the application in urban settings. Plant Physiology and Biochemistry, 216, 109208. https://doi.org/10.1016/j.plaphy.2024.109208
Kannenberg, S. A., Barnes, M. L., Bowling, D. R., Driscoll, A. W., Guo, J. S., & Anderegg, W. R. L. (2023). Quantifying the drivers of ecosystem fluxes and water potential across the soil-plant-atmosphere continuum in an arid woodland. Agricultural and Forest Meteorology, 329, 109269. https://doi.org/10.1016/j.agrformet.2022.109269
Manandhar, A., Rimer, I. M., Soares Pereira, T., Pichaco, J., Rockwell, F. E., & McAdam, S. A. M. (2024). Dynamic soil hydraulic resistance regulates stomata. New Phytologist, n/a(n/a). https://doi.org/10.1111/nph.20020
Haverroth, E. J., Rimer, I. M., Oliveira, L. A., de Lima, L. G. A., Cesarino, I., Martins, S. C. V., McAdam, S. A. M., & Cardoso, A. A. (2024). Gradients in embolism resistance within stems driven by secondary growth in herbs. Plant, Cell & Environment, 47(8), 2986–2998. https://doi.org/10.1111/pce.14921
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/https://doi.org/10.1002/pei3.10045
Kokkotos, E., Zotos, A., Triantafyllidis, V., & Patakas, A. (2024). Impact of Fruit Load on the Replenishment Dynamics of Internal Water Reserves in Olive Trees. Agronomy, 14(5), 1026. https://doi.org/10.3390/agronomy14051026
Kokkotos, E., Zotos, A., & Patakas, A. (2024). The Ecophysiological Response of Olive Trees under Different Fruit Loads. Life, 14(1), 128. https://doi.org/doi.org/10.3390/life14010128
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
Delval, L., Jonard, F., & Javaux, M. (2024). Simultaneous in situ monitoring of belowground, stem and relative stomatal hydraulic conductances of grapevine demonstrates a soil-texture specific transpiration control. https://doi.org/10.21203/rs.3.rs-4419968/v1
Haverroth, E. J., Da-Silva, C. J., Taggart, M., Oliveira, L. A., & Cardoso, A. A. (2024). Shoot hydraulic impairments induced by root waterlogging: parallels and contrasts with drought. Plant Physiology, kiae336. https://doi.org/10.1093/plphys/kiae336
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
Shi, W., Li, J., Zhan, H., Yu, L., Wang, C., & Wang, S. (2023). Relation between Water Storage and Photoassimilate Accumulation of Neosinocalamus affinis with Phenology. Forests, 14(3), 531. https://doi.org/10.3390/f14030531
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
Wang, Y., Liao, T., Guo, L., Liu, G., & Xi, B. (2023). Hydraulics Facilitate Urban Forest Establishment by Informing Tree Dynamics under Drought. Forests, 14(12), 2415. https://doi.org/10.3390/f14122415
Chen, Y., Evers, J. B., Yang, M., Wang, X., Zhang, Z., Sun, S., Zhang, Y., Wang, S., Ji, F., Xiang, D., Li, J., Ji, C., & Zhang, L. (2024). Cotton crop transpiration reveals opportunities to reduce yield loss when applying defoliants for efficient mechanical harvesting. Field Crops Research, 309, 109304. https://doi.org/10.1016/j.fcr.2024.109304
Vandegehuchte, M. W., Guyot, A., Hubeau, M., De Swaef, T., Lockington, D. A., & Steppe, K. (2014). Modelling reveals endogenous osmotic adaptation of storage tissue water potential as an important driver determining different stem diameter variation patterns in the mangrove species Avicennia marina and Rhizophora stylosa. Annals of Botany, 114(4), 667–676. https://doi.org/10.1093/aob/mct311
Pradiko, I. (2022). TRANSPIRATION OF OIL PALM (Elaeis guineensis Jacq.) BASED ON SAP FLOW MEASUREMENT: THE RELATION TO SOIL AND CLIMATE VARIABLES. Journal of Oil Palm Research. https://doi.org/10.21894/jopr.2022.0035
Renny, M. N. (2023). Organic Bioelectronics for Plant Physiology [Ph.D., University of Colorado at Boulder]. https://www.proquest.com/docview/2860588307/abstract/4EC1D7521FBC4DE2PQ/1
Hartill, G. E., Blackman, C. J., Halliwell, B., Jones, R. C., Holland, B. R., & Brodribb, T. J. (2023). Cold temperature and aridity shape the evolution of drought tolerance traits in Tasmanian species of Eucalyptus. Tree Physiology, 43(9), 1493–1500. https://doi.org/10.1093/treephys/tpad065
Feng, F., Wagner, Y., Klein, T., & Hochberg, U. (2023). Xylem resistance to cavitation increases during summer in Pinus halepensis. Plant, Cell & Environment, 46(6), 1849–1859. https://doi.org/10.1111/pce.14573
Prats, K. A., Fanton, A. C., Brodersen, C. R., & Furze, M. E. (2023). Starch depletion in the xylem and phloem ray parenchyma of grapevine stems under drought. AoB PLANTS, 15(5), plad062. https://doi.org/10.1093/aobpla/plad062
Avila, R. T., Kane, C. N., Batz, T. A., Trabi, C., Damatta, F. M., Jansen, S., & McAdam, S. A. M. (2023). The relative area of vessels in xylem correlates with stem embolism resistance within and between genera. Tree Physiology, 43(1), 75–87. https://doi.org/10.1093/treephys/tpac110
Ziegler, C., Cochard, H., Stahl, C., Foltzer, L., Gérard, B., Goret, J.-Y., Bonal, D., Heuret, P., Levionnois, S., Maillard, P., & Coste, S. (2023). Vulnerability to extreme drought is linked to hydraulic strategies and not carbohydrate use across 12 rainforest tree species. https://doi.org/10.22541/au.167638853.33022411/v1
Salinas, J., Padilla, F. M., Thompson, R. B., Teresa Peña-Fleitas, M., López-Martín, M., & Gallardo, M. (2023). Responses of yield, fruit quality and water relations of sweet pepper in Mediterranean greenhouses to increasing salinity. Agricultural Water Management, 290, 108578. https://doi.org/10.1016/j.agwat.2023.108578
Mohamad, S. A. (2022). IMPACT OF Elaeidobius kamerunicus (Faust) INTRODUCTION ON OIL PALM FRUIT FORMATION IN MALAYSIA AND FACTORS AFFECTING ITS POLLINATION EFFICIENCY: A REVIEW. Journal of Oil Palm Research. https://doi.org/10.21894/jopr.2022.0021
Gori, A., Moura, B. B., Sillo, F., Alderotti, F., Pasquini, D., Balestrini, R., Ferrini, F., Centritto, M., & Brunetti, C. (2023). Unveiling resilience mechanisms of Quercus ilex seedlings to severe water stress: Changes in non-structural carbohydrates, xylem hydraulic functionality and wood anatomy. Science of The Total Environment, 878, 163124. https://doi.org/10.1016/j.scitotenv.2023.163124
Ziegler, C., Cochard, H., Stahl, C., Foltzer, L., Gérard, B., Goret, J.-Y., Heuret, P., Levionnois, S., Maillard, P., Bonal, D., & Coste, S. (2024). Residual water losses mediate the trade-off between growth and drought survival across saplings of 12 tropical rainforest tree species with contrasting hydraulic strategies. Journal of Experimental Botany, erae159. https://doi.org/10.1093/jxb/erae159
Guo, J. S., Barnes, M. L., Smith, W. K., Anderegg, W. R. L., & Kannenberg, S. A. (2024). Dynamic regulation of water potential in Juniperus osteosperma mediates ecosystem carbon fluxes. New Phytologist, n/a(n/a). https://doi.org/10.1111/nph.19805
Peters, J., Gauthey, A., Lopez, R., Carins-Murphy, M. R., Brodribb, T. J., & Choat, B. (2000). Non-invasive imaging reveals convergence in root and stem vulnerability to cavitation across five tree species. Journal of Experimental Botany, 70(20). https://doi.org/doi:10.1093/jxb/eraa381
Lakmali, S., Benyon, R. G., Sheridan, G. J., & Lane, P. N. J. (2022). Change in fire frequency drives a shift in species composition in native Eucalyptus regnans forests: Implications for overstorey forest structure and transpiration. Ecohydrology, 15(3), e2412. https://doi.org/10.1002/eco.2412
Pritzkow, C., Brown, M. J. M., Carins-Murphy, M. R., Bourbia, I., Mitchell, P. J., Brodersen, C., Choat, B., & Brodribb, T. J. (2022). Conduit position and connectivity affect the likelihood of xylem embolism during natural drought in evergreen woodland species. Annals of Botany, 130(3), 431–444. https://doi.org/10.1093/aob/mcac053
Carins-Murphy, M. R., Cochard, H., Deans, R. M., Gracie, A. J., & Brodribb, T. J. (2023). Combined heat and water stress leads to local xylem failure and tissue damage in pyrethrum flowers. Plant Physiology, kiad349. https://doi.org/10.1093/plphys/kiad349
Lamarque, L. J., Delmas, C. E. L., Charrier, G., Burlett, R., Dell’Acqua, N., Pouzoulet, J., Gambetta, G. A., & Delzon, S. (2023). Quantifying the grapevine xylem embolism resistance spectrum to identify varieties and regions at risk in a future dry climate. Scientific Reports, 13(1), 7724. https://doi.org/10.1038/s41598-023-34224-6
Salamanca-Jimenez, A., Doane, T. A., & Horwath, W. R. (2016). Performance of Coffee Seedlings as Affected by Soil Moisture and Nitrogen Application. In D. L. Sparks (Ed.), Advances in Agronomy (Vol. 136, pp. 221–244). Academic Press. https://www.sciencedirect.com/science/article/pii/S0065211315001509
Skelton, R. P., Anderegg, L. D. L., Diaz, J., Kling, M. M., Papper, P., Lamarque, L. J., Delzon, S., Dawson, T. E., & Ackerly, D. D. (2021). Evolutionary relationships between drought-related traits and climate shape large hydraulic safety margins in western North American oaks. Proceedings of the National Academy of Sciences, 118(10). https://doi.org/10.1073/pnas.2008987118
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 1.0.6.8\
    4. Select “Install”
    5. Untick “Run ICT Instrument 1.0.6.8” 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 1.0.6.8”
  7. Open this shortcut, and confirm on the left of the software that it displays “1.0.6.8”
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