Dr. Steve Green

Dr. Steve GreenSteve is a research scientist from the Sustainable Production – Systems Modelling group at Plant and Food Research in Palmerston North. Steve holds a PhD degree in Physics from the University of Edinburgh. His research interests that include the design and construction of gadgets to measure water and nutrient flows through soil, and the development of system models to predict the effect of land use activity on the receiving environment. Steve’s current research activity is focused on developing a web-based tool for irrigation application for vine and tree crops. Field work is aimed at improved understanding, through measurement and modelling, of the dynamics of water and nutrient flows in orchard and vineyard systems.

Steve has developed the general-purpose model called SPASMO (Soil Plant Atmosphere System Model) that predicts the environmental fate of water, nutrient (N & P), pesticide, and heavy-metals under productive lands. Steve has also been active in sap flow research for the past 25 years and has published more than 100 refereed scientific papers.


Title of talk to be presented

Theoretical developments towards a new method to measure low and reverse flows


References and recent publications

Green, S.R., and McNaughton, K.G., 1996. Modelling the effective stomatal resistance for calculating transpiration from an apple tree. Agricultural and Forest Meteorology, 83:1-26.

Green, S.R., and Clothier, B.E., and McLeod, D.M., 1999. The root zone dynamics of soil water uptake by the roots of a mature apple tree. Plant and Soil. 206, 63-79.

Green SR., Clothier BE, and Jardine BJ., 2003. Theory and practical application of heat-pulse to measure sap flow. Agronomy Journal 95:1371-1379.

Green SR, Kirkham MB, and Clothier BE 2006. Root uptake and transpiration: from measurements and models to sustainable irrigation. Agricultural Water Management.

Green SR, Clothier BE, van den Dijssel C, Deurer M 2007. Chapter 15: Measurement and modelling the stress response of grapevines to a root-zone soil water deficit. SSA Monograph: Modeling the response of cropts to limited water: recent advances in understanding and modelling water stress effects on plant growth processes (Laj Ahuja, Editor).