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Response of Squash and Cucumber Cultivars to Halosulfuron

Published online by Cambridge University Press:  20 January 2017

Theodore M. Webster,
A. Stanley Culpepper and
W. Carroll Johnson III
Theodore M. Webster*
Affiliation:
Crop Protection and Management Research Unit, United States Department of Agriculture, Agricultural Research Service, Coastal Plain Experiment Station, Tifton, GA 31794
A. Stanley Culpepper
Affiliation:
Crop and Soil Sciences, University of Georgia, Tifton 31794
W. Carroll Johnson III
Affiliation:
Crop Protection and Management Research Unit, United States Department of Agriculture, Agricultural Research Service, Coastal Plain Experiment Station, Tifton, GA 31794
*
Corresponding author's E-mail: twebster@tifton.usda.gov
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Abstract

Greenhouse studies were conducted to evaluate halosulfuron tolerance of several squash and cucumber cultivars commonly grown in Georgia. There was an inverse linear relationship between squash plant biomass and rate of halosulfuron (r 2 = 0.70 to 0.92). With the exception of ‘Supersett’, the slopes from regression of all squash cultivars were equivalent. The estimated amount of halosulfuron required to reduce growth by 20%, based on regression, ranged from 8.2 to 45 g ai/ha (for Supersett and ‘Dixie’, respectively). Squash plant height was also reduced by halosulfuron, though plants began to recover from the injury by the end of the study. There was no effect of halosulfuron rate on cucumber plant biomass or height. Cucumber cultivars appeared to be more tolerant to halosulfuron than did squash cultivars.

Keywords

Halosulfuroncucumber, Cucumis sativus L.squash, Cucurbita pepo L.Cyperus esculentusCyperus rotundusmethyl bromide alternativesMON 12037purple nutsedgevegetable weed managementyellow nutsedgeDAP, days after plantingGR20, herbicide rate required to reduce crop growth 20%POST, postemergencePRE, preemergencePRE–POST, half rate PRE followed by half rate POST

Information

Type
Note
Information
Weed Technology , Volume 17 , Issue 1 , March 2003, pp. 173 - 176
Copyright
Copyright © Weed Science Society of America 

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References

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