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Giant foxtail (Setaria faberi) interference in nonirrigated corn (Zea mays)

Published online by Cambridge University Press:  12 June 2017

Jason C. Fausey ,
James J. Kells ,
Scott M. Swinton  and
Karen A. Renner
Jason C. Fausey
Affiliation:
Department of Crop and Soil Sciences, Michigan State University, East Lansing, MI 48824-1325
James J. Kells
Affiliation:
Department of Crop and Soil Sciences, Michigan State University, East Lansing, MI 48824-1325
Scott M. Swinton
Affiliation:
Department of Agricultural Economics, Michigan State University, East Lansing, MI 48824-1325
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Abstract

Studies were conducted at East Lansing, MI, in 1994 and 1995 to examine corn yield response to giant foxtail interference and to examine the effect of giant foxtail density on giant foxtail biomass, seed production, and seed germination. Treatments consisted of 0, 10, 30, 60, 84, and 98 giant foxtail plants m−1 of row in 1994 and 0, 10, 27, 30, 60, and 69 plants m−1 of row in 1995. The influence of giant foxtail density on corn yield fit a hyperbolic equation. Corn yields were reduced 13% in 1994 and 14% in 1995 from 10 giant foxtail plants m−1 of row. Corn dry matter at maturity was decreased 24 and 23% from 10 giant foxtail plants m−1 of row in 1994 and 1995, respectively. Giant foxtail seed production increased linearly as inflorescence length increased. The length of a single giant foxtail inflorescence increased as plant density increased and the number of inflorescence produced per plant decreased. Giant foxtail seed production ranged from 518 to 2,544 seeds per plant. Ten giant foxtail plants m−1 of row produced 15,700 seeds m−2. Giant foxtail seed germination was not affected by plant density.

Keywords

Giant foxtail, Setaria faberi Herrm. SETFAcorn, Zea mays L., ‘Pioneer 3573’Bioeconomic modelcompetitionSETFA
Type
Weed Biology and Ecology
Information
Weed Science , Volume 45 , Issue 2 , April 1997 , pp. 256 - 260
Copyright
Copyright © 1997 by the Weed Science Society of America 

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