Date of this Version
Thesis (M.S.)—University of Nebraska—Lincoln, 1961. Department of Agronomy.
The purpose of this study was to determine if Penicillium sp. produced substances toxic to wheat seedlings in the residue-treated soil.
Sharpsburg silty clay loam soil from the plowed rotation plots at the Agronomy Farm, Lincoln, Nebraska, was treated with various crop residues, sterilized, and inoculated with Penicillium sp. which produces a very toxic substance in culture medium. The treated soils were incubated for periods of zero to four weeks at 75 F. and then the effect of decomposition products on growth of wheat seedlings was determined.
Advisor: T. M. McCalla