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Effect of Corn (Zea mays) Seeding Date 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

Major differences in above- ground biomass and tuber production of yellow nutsedge (Cyperus esculentus L. # CYPES) were not observed when corn (Zea mays L. “CO-OP S265”) was seeded on different dates (1st, 2nd, 3rd and 4th week of May; and 1st week of June). The final seedbed was prepared just prior to each seeding date and this cultivation stimulated dormant tubers to sprout. As a result, a large population of yellow nutsedge emerged with the corn at all seeding dates. Because fertilizer was banded near the corn row, yellow nutsedge biomass, tuber dry weight and number of tubers were higher within corn rows than between rows. Tuber size was affected by seeding date and shifted toward smaller tubers within corn rows and larger tubers between the rows as the corn was sown late. The optimum seeding date of corn was in the 3rd week of May when the highest corn yield was obtained and yellow nutsedge growth was generally reduced.

Keywords

Tuber numbertuber sizecompetitionintegrated weed management
Type
Research Article
Information
Weed Science , Volume 31 , Issue 4 , July 1983 , pp. 572 - 575
Copyright
Copyright © 1983 Weed Science Society of America 

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References

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