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Influence of Soil Moisture on Phytotoxicity of Cinmethylin to Various Crops

Published online by Cambridge University Press:  12 June 2017

Steven G. Russell ,
Thomas J. Monaco  and
Jerome B. Weber
Steven G. Russell
Affiliation:
Dep. Hortic. Sci., North Carolina State Univ., Raleigh, NC 27695-7609
Thomas J. Monaco
Affiliation:
Dep. Hortic. Sci., North Carolina State Univ., Raleigh, NC 27695-7609
Jerome B. Weber
Affiliation:
Dep. Crop Sci., North Carolina State Univ., Raleigh, NC 27695-7609
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Abstract

Field trials were conducted in 1986 and 1987 to determine the effects of moisture on cinmethylin activity. The herbicide was applied preemergence at rates of 0.0, 0.3, 0.6, and 0.9 kg ai ha−1 to both dry and moist sandy loam soil, followed by varying irrigation regimes. Plant species used in the study included soybean, snap bean, cotton, peanut, and cucumber. Peanut was the most tolerant to cinmethylin, followed by cotton, soybean, snap bean, and cucumber. When cinmethylin was applied to a moist soil, less crop injury resulted than when it was applied to a dry soil. If 7.6 cm of water was applied shortly after cinmethylin application to a dry soil, severe crop injury occurred. When 2.5 cm of irrigation was applied within 8 h or at 5 days after cinmethylin application to a dry soil, crop injury was reduced when compared to applying 7.6 cm irrigation.

Keywords

Cinmethylin, exo-1-methyl-4-(1-methylethyl)-2-[(methylphenyl)methoxy]-7-oxabicyclo[2.2.1] heptanesoybean, Glycine max (L.) Merr. ‘Ransom’snap bean, Phaseolus vulgaris L. ‘Atlantic’cotton, Gossypium hirsutum L. ‘Coker's 315’peanut Arachis hypogea L. ‘Tamnut’cucumber, Cucumis sativus L. ‘Calypso’IrrigationGlycine maxPhaseolus vulgarisGossypium hirsutumArachis hypogeaCucumis sativus
Type
Weed Control and Herbicide Technology
Information
Weed Science , Volume 39 , Issue 3 , September 1991 , pp. 402 - 407
Copyright
Copyright © 1991 by the Weed Science Society of America 

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