Sensors and instrumentation to measure sap flow in small stem plants

David Morton, H. Ghayvat, S. C. Mukhopadhyay, Steve Green

Research output: Chapter in Book/Report/Conference proceedingConference proceeding contributionResearchpeer-review

Abstract

Heat-based sap flow sensors are widely used in research to analyse plant-water relationships and to study water flow dynamics of plants to determine the water requirements for optimum growth. To date, the majority of field studies of sap flow have been conducted in large plants, with only a few methods being suitable for small stems of less than 10 mm in diameter. This paper discusses the suitability of sensors and electronic designs for a heat-based method to monitor sap flows over the velocity range 2-150 cm/hr, in a small plant stems of 5 to 10 mm in diameter. Three heat-pulse methods (Compensated Heat Pulse, Heat Ratio and Tmax) were tested using both internal and external sensor designs. Based on preliminary findings, two alternative methods of analysis were developed and tested in the laboratory. A short field experiment was carried out to compare heat pulse velocity and global solar radiation. We found the external sensor was not suitable for small stems (<20mm diam.) with thick (>3mm) bark. A small internal sensor showed more promising results for resolving a wider range of sap flows and tracking the influence of global solar radiation.

LanguageEnglish
Title of host publication2016 IEEE International Instrumentation and Measurement Technology Conference (I²MTC 2016) Proceedings
Subtitle of host publicationMeasuring the Pulse of Industries, Nature and Humans
Place of PublicationPiscataway, NJ
PublisherInstitute of Electrical and Electronics Engineers (IEEE)
Pages1-6
Number of pages6
ISBN (Electronic)9781467392204
DOIs
Publication statusPublished - 22 Jul 2016
Externally publishedYes
Event2016 IEEE International Instrumentation and Measurement Technology Conference, I2MTC 2016 - Taipei, Taiwan, Province of China
Duration: 23 May 201626 May 2016

Other

Other2016 IEEE International Instrumentation and Measurement Technology Conference, I2MTC 2016
CountryTaiwan, Province of China
CityTaipei
Period23/05/1626/05/16

Fingerprint

Sensors
Solar radiation
Water
Hot Temperature
Experiments

Keywords

  • Average Gradient
  • Compensation Heat Pulse
  • Heat pulse velocity
  • Heat Ratio
  • Sap flow
  • Tmax

Cite this

Morton, D., Ghayvat, H., Mukhopadhyay, S. C., & Green, S. (2016). Sensors and instrumentation to measure sap flow in small stem plants. In 2016 IEEE International Instrumentation and Measurement Technology Conference (I²MTC 2016) Proceedings: Measuring the Pulse of Industries, Nature and Humans (pp. 1-6). [7520519] Piscataway, NJ: Institute of Electrical and Electronics Engineers (IEEE). https://doi.org/10.1109/I2MTC.2016.7520519
Morton, David ; Ghayvat, H. ; Mukhopadhyay, S. C. ; Green, Steve. / Sensors and instrumentation to measure sap flow in small stem plants. 2016 IEEE International Instrumentation and Measurement Technology Conference (I²MTC 2016) Proceedings: Measuring the Pulse of Industries, Nature and Humans. Piscataway, NJ : Institute of Electrical and Electronics Engineers (IEEE), 2016. pp. 1-6
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Morton, D, Ghayvat, H, Mukhopadhyay, SC & Green, S 2016, Sensors and instrumentation to measure sap flow in small stem plants. in 2016 IEEE International Instrumentation and Measurement Technology Conference (I²MTC 2016) Proceedings: Measuring the Pulse of Industries, Nature and Humans., 7520519, Institute of Electrical and Electronics Engineers (IEEE), Piscataway, NJ, pp. 1-6, 2016 IEEE International Instrumentation and Measurement Technology Conference, I2MTC 2016, Taipei, Taiwan, Province of China, 23/05/16. https://doi.org/10.1109/I2MTC.2016.7520519

Sensors and instrumentation to measure sap flow in small stem plants. / Morton, David; Ghayvat, H.; Mukhopadhyay, S. C.; Green, Steve.

2016 IEEE International Instrumentation and Measurement Technology Conference (I²MTC 2016) Proceedings: Measuring the Pulse of Industries, Nature and Humans. Piscataway, NJ : Institute of Electrical and Electronics Engineers (IEEE), 2016. p. 1-6 7520519.

Research output: Chapter in Book/Report/Conference proceedingConference proceeding contributionResearchpeer-review

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Morton D, Ghayvat H, Mukhopadhyay SC, Green S. Sensors and instrumentation to measure sap flow in small stem plants. In 2016 IEEE International Instrumentation and Measurement Technology Conference (I²MTC 2016) Proceedings: Measuring the Pulse of Industries, Nature and Humans. Piscataway, NJ: Institute of Electrical and Electronics Engineers (IEEE). 2016. p. 1-6. 7520519 https://doi.org/10.1109/I2MTC.2016.7520519