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Effect of Lanolin or Lanolin + Starch Rings on Absorption and Translocation of 2,4-D or Glyphosate in Hemp Dogbane (Apocynum cannabinum)

Published online by Cambridge University Press:  12 June 2017

M. E. Schultz  and
O. C. Burnside
M. E. Schultz
Affiliation:
Dep. Agron., Univ. of Nebraska, Lincoln, NE 68583
O. C. Burnside
Affiliation:
Dep. Agron., Univ. of Nebraska, Lincoln, NE 68583
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Abstract

Lanolin or lanolin + corn (Zea mays L.) starch rings are often used as barriers on leaves to prevent runoff of foliarly applied 14C-herbicide treatments. A preliminary experiment showed that 64 and 90% of the applied 2,4-D [(2,4-dichlorophenoxy)acetic acid] and 57 and 87% of the applied glyphosate [N-(phosphonomethyl)glycine] was adsorbed to or absorbed into a lanolin and lanolin + starch ring, respectively, during 6 days on a glass slide. Absorption and translocation of 2,4-D in hemp dogbane (Apocynum cannabinum L.) was decreased from 26% down to 16 or 17% of the total applied when a lanolin or lanolin + starch ring was used. Glyphosate absorption and translocation increased with the lanolin ring but not with the lanolin + starch ring. Distribution of the translocated 2,4-D and glyphosate was also altered by use of the ring barriers. Results indicate that one should avoid use of the lanolin ring in 14C-herbicide absorption studies to simulate field conditions.

Keywords

Foliar applicationherbicide uptakephytotoxicitypostemergenceradioactivesurfactants
Type
Research Article
Information
Weed Science , Volume 28 , Issue 2 , March 1980 , pp. 149 - 151
Copyright
Copyright © 1980 by the Weed Science Society of America 

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References

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