His interests have expanded beyond the social sciences to include new knowledge and practice in soil science and microbiology.
The term is borrowed from the notion of frost line in soil science.
There is a difference in the usage of this term in geology and soil science.
Agronomy encompasses work in the areas of plant genetics, plant physiology, meteorology, and soil science.
However, much depends on the topography and the clay, and on soil science.
Two more, the bureaux on soil science and plant genetics, will start work to-morrow.
Soil science: methods and applications.
A professor emeritus of soil science assists in experimental design and data analysis on a consultancy fee basis.
