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Evaluation of soybean injury from sulfentrazone and inheritance of tolerance

Published online by Cambridge University Press:  12 June 2017

Jason M. Swantek ,
Clay H. Sneller  and
Lawrence R. Oliver
Jason M. Swantek
Affiliation:
Department of Agronomy, University of Arkansas, Fayetteville, AR 72701
Clay H. Sneller
Affiliation:
Department of Agronomy, University of Arkansas, Fayetteville, AR 72701
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Abstract

Experiments were conducted in the field and greenhouse to evaluate the effects of cultivar and sulfentrazone rate on soybean injury and yield from soil-applied sulfentrazone and to determine soybean inheritance of sulfentrazone tolerance. Excessive rainfall and cool growing conditions in 1996 enhanced sulfentrazone injury and caused yield reduction in the susceptible cultivars ‘KS4895’ and ‘Hutcheson’ at 0.56 kg ai ha−1 and KS4895 at 0.42 kg ha−1. Yields of tolerant cultivars ‘Deltapine 3478’ and ‘Manokin’ were not reduced. Sulfentrazone at 0.42 kg ha−1 reduced soybean stand 17 and 35% for tolerant and susceptible cultivars, respectively. Field and greenhouse inheritance studies were conducted on plant families developed from two crosses: Manokin (tolerant) by ‘Asgrow A4715’ (susceptible) and ‘Northrup King S59–60’ (tolerant) by KS4895 (susceptible). The sulfentrazone tolerance of Manokin and Northrup King S59–60 appeared to be controlled by a single gene, with tolerance being dominant to susceptibility. The allelic relationship of tolerance from these two sources needs to be determined.

Keywords

Sulfentrazonesoybean, Glycine max (L.) Merr.Geneticsherbicide tolerancecultivar selection

Information

Type
Special Topics
Information
Weed Science , Volume 46 , Issue 2 , April 1998 , pp. 271 - 277
Copyright
Copyright © 1998 by the Weed Science Society of America 

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Footnotes

Current address: Blue Springs, MO 64014

References

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