The leaf patch clamp pressure probe: a new tool for irrigation scheduling and deeper insight into olive drought stress physiology Academic Article uri icon

abstract

  • Leaf turgor pressure provides a very sensitive indicator of plant water status. Diurnal changes in turgor pressure of olives were measured over several months with a novel leaf patch clamp pressure (LPCP) probe. The LPCP probe is user-friendly, non-invasive, online- monitoring, robust and versatile, and is characterised by high precision, low-cost and automation suitability. Data are transferred wireless to an internet server via a mobile phone network for real-time evaluation and for remote regulation of irrigation or stress management. The probe measures the attenuated output pressure response (Pp) of a leaf patch upon application of an externally applied, constantly kept pressure, generated by two small magnets. Pp is sensed by a miniaturized pressure sensor embedded in silicon and integrated into one of the magnets. Concomitant measurements of balancing pressure …

publication date

  • January 1, 2011