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Effect of Corn (Zea mays) Population on the Growth of Yellow Nutsedge (Cyperus esculentus)

Published online by Cambridge University Press:  12 June 2017

Zain Ghafar  and
Alan K. Watson
Zain Ghafar
Affiliation:
Dep. Plant Sci., Macdonald College of McGill University, 21,111 Lakeshore Road, Ste-Anne-de-Bellevue, Quebec, Canada H9X 1CO
Alan K. Watson
Affiliation:
Dep. Plant Sci., Macdonald College of McGill University, 21,111 Lakeshore Road, Ste-Anne-de-Bellevue, Quebec, Canada H9X 1CO
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Abstract

Increasing the corn (Zea mays L. “CO-OP S265”) population from 33 300 to 133 300 plants per hectare in the field significantly reduced yellow nutsedge (Cyperus esculentus L. # CYPES) above-ground biomass, tuber number, tuber weight and yellow nutsedge height at the end of growing season, and significantly increased corn yield. Photosynthetically active radiation below corn canopies decreased with increasing corn population and corresponded to reductions in yellow nutsedge above-ground biomass, tuber weight and tuber number. These results demonstrate that available light is a major factor in yellow nutsedge competition with corn. The size of yellow nutsedge was also reduced at high corn densities. These results support the use of crop manipulation in an integrated yellow nutsedge management system in corn.

Keywords

Tuber numbertuber sizecompetitionintegrated weed management
Type
Research Article
Information
Weed Science , Volume 31 , Issue 5 , September 1983 , pp. 588 - 592
Copyright
Copyright © 1983 Weed Science Society of America 

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References

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