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Velvetleaf (Abutilon theophrasti) Effect on Corn (Zea mays) Growth and Yield in South Dakota

Published online by Cambridge University Press:  12 June 2017

Chad Scholes ,
Sharon A. Clay  and
Kalyn Brix-Davis
Chad Scholes
Affiliation:
Plant Sci. Dep., South Dakota State Univ., Brookings, SD 57007
Sharon A. Clay
Affiliation:
Plant Sci. Dep., South Dakota State Univ., Brookings, SD 57007
Kalyn Brix-Davis
Affiliation:
Plant Sci. Dep., South Dakota State Univ., Brookings, SD 57007
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Abstract

Studies were conducted at two sites in South Dakota in 1992 and at one site in 1993 to measure the effect of velvetleaf on corn growth and yield. Velvetleaf was overseeded in corn rows and thinned to densities of 0, 1.3, 4, 12, and 24 plants/m2. Velvetleaf leaf area index and total biomass were positively correlated with velvetleaf density. Biomass per velvetleaf plant and corn biomass were correlated negatively with velvetleaf density. The percent corn yield reduction was similar for locations and years in spite of large yield differences. Maximum yield loss estimated by a hyperbolic yield reduction model was 37.2% with a loss of 4.4% per unit velvetleaf density.

Keywords

Velvetleaf, Abutilon theophrasti L. # ABUTHcorn, Zea mays L. ‘Pioneer 3615,’ ‘Agripro 193,’ ‘Agripro 270.’Weed interferenceweed competitionyield lossABUTH
Type
Research
Information
Weed Technology , Volume 9 , Issue 4 , December 1995 , pp. 665 - 668
Copyright
Copyright © 1995 by the Weed Science Society of America 

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References

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