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Tolerance of Soybeans (Glycine max) and Grain Sorghum (Sorghum bicolor) to Fluometuron Residue

Published online by Cambridge University Press:  12 June 2017

A. W. Jackson ,
L. S. Jeffery  and
T. C. McCutchen
A. W. Jackson
Affiliation:
Dep. Plant and Soil Sci., Univ. of Tennessee
L. S. Jeffery
Affiliation:
Dep. of Plant and Soil Sci., Univ. of Tennessee, Knoxville, TN 37901
T. C. McCutchen
Affiliation:
Milan Field Station, Milan, TN 37901
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Abstract

Field experiments were conducted for a 3-yr period to determine the feasibility of planting an alternate crop on fluometuron [1,1-dimethyl-3-(α,α,α-trifluoro-m-tolyl)urea] treated cotton land in event that an adequate cotton (Gossypium hirustum L.) stand fails to materialize. Fluometuron treatments were 1.7 kg/ha on a treated area basis as a banded application, and 1.7 and 3.4 kg/ha as a broadcast application. Grain sorghum [Sorghum bicolor (L.) Moench ‘AKS-614’, ‘Excel’ and ‘BR 64’] and soybeans [Glycine max (L.) Merr. ‘Dare’ and ‘Lee 68’] were planted 3, 6, and 9 weeks after fluometuron application. Grain sorghum and soybean tolerance to fluometuron residues varied between locations. Very little injury occurred on the Sequatchie loam in Knoxville, Tennessee, but considerable injury occurred on the Memphis silt loam at Milan, Tennessee. The differences were attributed to higher rainfall during the first 3-week period and to higher organic matter and higher sand content at Knoxville. Nevertheless, at Milan, grain sorghum was successfully grown 3 weeks after the 1.7 kg/ha banded application, 6 weeks after the 1.7 kg/ha broadcast application and 9 weeks after the 3.4 kg/ha application. Soybeans, also at Milan, were partially injured when planted between the fluometuron (1.7 kg/ha) treated bands 6 weeks after application and 9 weeks after application when planted on the 1.7 kg/ha broadcast-treated areas.

Type
Research Article
Information
Weed Science , Volume 26 , Issue 5 , September 1978 , pp. 454 - 458
Copyright
Copyright © 1978 by the Weed Science Society of America 

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References

Literature Cited

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