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Effect of 2,4-DB on Soybeans (Glycine max)

Published online by Cambridge University Press:  12 June 2017

Michele A. Barker ,
Lafayette Thompson Jr.  and
Robert P. Patterson
Michele A. Barker
Affiliation:
Dep. Crop Sci., North Carolina State Univ., Raleigh, NC 27650
Lafayette Thompson Jr.
Affiliation:
Amer. Ag. Serv., Inc., Cary, NC 27511
Robert P. Patterson
Affiliation:
Dep. Crop Sci., North Carolina State Univ., Raleigh, NC 27650
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Abstract

Field and greenhouse studies conducted in North Carolina in 1981 and 1982 evaluated the effect of the dimethylamine salt of 2,4-DB [4-(2,4-dichlorophenoxy) butyric acid] on soybeans. In the field, 2,4-DB at and above 0.07 kg ae/ha reduced soybean shoot mass, leaf nitrogen levels, and nodule activity. Soybean seed yields were reduced by 2,4-DB at and above 0.07 kg/ha. In greenhouse studies, total nodule activity was reduced by 0.07 and 0.14 kg/ha of 2,4-DB. Soybeans treated with 2,4-DB at initiation of flowering (R1 stage) or when pods were 1.9 cm long (R4 stage) yielded progeny with visible injury symptoms. Seedling emergence was also reduced in progeny of soybeans.

Keywords

Acetylene reductionnodule activityphytotoxicitypostemergence weed control
Type
Weed Control and Herbicide Technology
Information
Weed Science , Volume 32 , Issue 3 , May 1984 , pp. 299 - 303
Copyright
Copyright © 1984 by the Weed Science Society of America 

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References

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