I let the top soil dry out last week in order to force the corn to use water and nitrate from deeper in the soil. The 18 mm of rain followed by 24 mm of irrigation has wet up the top layer of soil this week.
I studied Agricultural Science and then completed a PhD at the University of Sydney.
I joined CSIRO in 1990 and am currently a Principal Research Scientist based in Canberra working on irrigation, water productivity and the ecological footprint of agriculture.
I also hold an honorary chair in the Faculty of Natural and Agricultural Sciences at the University of Pretoria, South Africa.
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