Phytotoxins Produced during Decomposition of Plan Residues in Soil and Their Effect on the Growth of Wheat Seedlings

Authors

Dale E. Behmer, University of Nebraska-Lincoln

Document Type

Thesis

Date of this Version

7-1961

Citation

Thesis (M.S.)—University of Nebraska—Lincoln, 1961. Department of Agronomy.

Comments

Copyright 1961, the author. Used by permission.

Abstract

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