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Environmental and Edaphic Influences on the Selectivity of Alachlor on Snap Beans (Phaseolus vulgaris)

Published online by Cambridge University Press:  12 June 2017

A. R. Putnam  and
Robert P. Rice Jr.
A. R. Putnam
Affiliation:
Dep. Hortic., Pestic. Res. Center, Michigan State Univ., East Lansing, MI 48824
Robert P. Rice Jr.
Affiliation:
Dep. Orn. Hortic., California Polytechnic State Univ., San Luis Obispo, CA 93407
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Abstract

The influence of several environmental and edaphic factors on alachlor [2-chloro-2′,6′-diethyl-N-(methoxymethyl)acetanilide] selectivity in snap bean (Phaseolus vulgaris L.) was examined. Crop safety was consistently improved when alachlor was applied preplant incorporated as compared to surface preemergence treatment. Under field conditions, maximum injury occurred either when temperatures during germination were cool and rainfall was minimal, or when temperatures approached or exceeded 27 C and the soil was saturated. In the growth chamber, more damage occurred under low temperature regimes, although volatilization of alachlor from moist soil also produced injury under higher temperatures. Injury was less severe in soils high in organic matter content. Alachlor injury decreased after 5 cm of simulated rainfall were applied on a loamy sand.

Keywords

Herbicide incorporationtemperaturerainfallvolatilityorganic matter
Type
Research Article
Information
Weed Science , Volume 27 , Issue 5 , September 1979 , pp. 570 - 574
Copyright
Copyright © 1979 by the Weed Science Society of America 

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References

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