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Thesis (M.S.)--University of Nebraska--Lincoln, 1968. Department of Agronomy.


Copyright 1968, the author. Used by permission.


The purpose of this research activity was to determine the influence of advance in maturity and level of nitrogen fertilization on the accumulation of nitrogenous materials in the above-ground and below-ground portions of Sorghum vulgar var. Sudanese.

Successive sampling from the 5th to 16th week after emergence revealed a general decrease in the nitrogen concentration of the above-ground and below-ground plant parts. Nitrogen accumulation increased from the 5th to the 12th week for above-ground part and from the 5th to the 13th week for below-ground parts. In both instances, a decrease followed the maximum accumulation. No evidence of translocation from the shoots to the roots was observed. This is in contrast to the physiological activity generally recognized in perennial plants.

Advisor: Donald F. Buralaff