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Effects of Population Levels on Yield and Maturity of Maize Hybrids Grown on the Northern Great Plains¹

Synopsis: Plant production reached a maximum at 12,000 to 16,000 plants per acre in eastern South Dakota. Grain production reached a maximum at the same level and fell off drastically if population levels exceeded this optimum. Under conditions of drouth, maximum yields may be associated with very low population levels.

² Formerly graduate assistant in Agronomy (present address: Pfister Associated Growers, Inc., Cozad, Nebr.), Professor of Agronomy, and formerly Associate Professor of Agronomy (present address: University of Minnesota, St. Paul, Minn.), respectively.

Received for publication April 25, 1963.

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				J. S. Boyer Plant Productivity and Environment Science, October 29, 1982; 218(4571): 443 - 448. [Abstract] [PDF]