Board of Scientific Advisors


Dr. James Entry,
Director of Research and Development (SAB)

Dr. Entry is a USDA co-inventor of Matrix technology and has published important research involving the matrix technology for slow nutrient release, poultry and dairy water as fertilizer sources, quantified Escherichia coli, Enterococcus spp, soil microbial biomass in animal waste amended soils and in PAM-amended soils, and developed techniques to measure PAM degradation in the field. His expertise includes soil and water microbiology, soil fertility, and water chemistry, cellulose and lignin degradation, and plant physiology.  Dr. Entry has B.Sc., M.Sc., and Ph.D. degrees in Forest Science with specialization in soil microbiology. He is the author or co-author of 130 refereed scientific journal papers, book chapters, and conference proceedings papers.  Dr. Entry has directed, or personally carried out research in forest, range and agricultural environments.


Dr. Robert E. Sojka

Dr. Robert E. Sojka earned his PhD in soil science in 1974 at the University of California at Riverside.  His major professor was Dr. Lewis H. Stolzy and his dissertation work, involving plant water stress indicators, was conducted cooperatively in Mexico in Dr. Norman Borlaug’s CIMMYT wheat breeding program.  Dr. Sojka’s early career path included appointments as a postdoctoral research scientist in the Agronomy Department of the University of Arkansas at Fayetteville (1974), Assistant Professor of soil science at North Dakota State University (1976), and soil scientist with the USDA Agricultural Research Service (ARS) in Florence South Carolina (1978).  In 1986 he transferred to the ARS research station in Kimberly, Idaho where he served until retirement in 2008.  From 2003 until retirement in 2008 he was the Research Leader and Director of the Kimberly ARS research lab.  During his career Dr. Sojka participated in extended research projects in Mexico and New Zealand and advised projects in Australia, Brazil and Portugal.  Dr. Sojka’s work produced over 250 authored or co-authored refereed journal research papers, book chapters, and proceedings papers.  His principle areas of research focus have included the influence of soil physical properties on plant response, soil hypoxia, soil conservation tillage, compaction management, erosion control, and water quality protection.  He has received a number of professional awards for excellence in research from scientific professional organizations and government agencies.


Dr. Brendan Hicks

Associate Professor Brendan J Hicks completed his B.Sc. in Botany (1975; University of Auckland) and M.Sc. with Honours (1977; University of Auckland), specializing in marine nitrogen fixation. He then joined the Ministry of Agriculture and Fisheries (MAF) in Wellington, New Zealand, as a freshwater scientist in 1978. In 1985 he accepted a National Research Advisory Council PhD scholarship to study at the Department of Fisheries and Wildlife, Oregon State University, Corvallis, Oregon, for his Doctorate in Fisheries Science.  In 1992, he joined the academic staff the Department of Biological Sciences at the University of Waikato, Hamilton, New Zealand, where he still works as an Associate Professor.  His duties include lecturing, conducting research into fish ecology, supervising graduate students, and departmental and scientific administration.  Currently he leads the Department of Biological Sciences as Chair.  The department has 22 academic staff and 28 technical and general staff.  This is the most research-lead department in the University of Waikato.  This has lead to his broad research background in environmental chemistry, the use of stable isotopes, freshwater ecology, fishery dynamics, and statistics.