Crop Science Journal of Natural Resources and Life Sciences Education
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Published in Crop Sci 9:405-406 (1969)
© 1969 Crop Science Society of America
677 S. Segoe Rd., Madison, WI 53711 USA
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Effect of Tassel Removal on Grain Yield of Corn (Zea mays L.)1

R. B. Hunter, T. B. Daynard, D. J. Hume, J. W. Tanner, J. D. Curtis and L. W. Kannenberg2

In three of five cases, tassel removal from corn (Zea mays L.) at or near tassel emergence increased grain yields. The increase was larger and more consistent at higher populations. When leaf tissue was removed with the tassel, yields were decreased, although this effect was smaller at higher populations. A large portion of the yield response from detasseling resulted from the elimination of tassel light interception. Simulated small tassel size (produced by tassel side branch removal) resulted in increased grain yields.

Key Words: Light interception • Detasseling • Leaf removal

1 Contribution of the Department of Crop Science, University of Guelph, Ontario and Kemptville College of Agricultural Technology, Kemptville, Ontario. This research was supported by the Ontario Department of Agriculture and Food and the National Research Council of Canada.

2 Lecturer, Assistant Professor, Assistant Professor, Professor, Crop Science Department, University of Guelph; Head of Crops Division, Kemptville College of Agricultural Technology; and Associate Professor, Crop Science Department, University of Guelph.

Received for publication May 31, 1968.


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