This fonds contains abstracts, research reports, and articles, including research on soil structure analysis, soils and roots, chemical herbicides, and weed control. It also includes a copy of Dr. Pavlychenko's thesis, "Root Systems of Certain Forage Crops in Relation to the Management of Agricultural Soils" and lecture notes, bibliographies, list of references and background material, including precipitation records from 1920-1950. In addition, there is a considerable amount of correspondence, both with individuals such as L.E. Kirk, G.D. Fuller, H. Ohorodnyk, and Premier Stewart Garson of Manitoba, as well as with various associations and companies, including the American Association for the Advancement of Science, the Bureau of Plant Industry, and the Canadian Pacific Railway (specifically concerning weed control on railway rights of way). The fonds also contains the 35 mm black and white film "Roots in the Ground" and two video tape dubs. of that film