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Effect of Petroleum Oils on the Uptake of Atrazine-14 C by Corn

Published online by Cambridge University Press:  12 June 2017

G. E. Coats  and
C. L. Foy
G. E. Coats
Affiliation:
Plant Physiol., Dep. of Plant Pathol. and Physiol., Virginia Polytech. Inst. and State Univ., Blacksburg, VA 24061
C. L. Foy
Affiliation:
Plant Physiol., Dep. of Plant Pathol. and Physiol., Virginia Polytech. Inst. and State Univ., Blacksburg, VA 24061
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Abstract

Selected paraffinic and naphthenic phytobland oils used as adjuvants markedly enhanced the foliar uptake and acropetal translocation of ring-labeled atrazine [2-chloro-4-(ethylamino)-6-isopropylamino-s-triazine] by corn (Zea mays L. ‘VPI 646′), when compared with atrazine-14 C applied with nonionic polysorbate surfactant or in aqueous 25% methanol alone. Generally, 14C uptake increased with increasing concentration (1.25 to 20.0%) of a 100-sec viscosity paraffinic oil and with time (up to 32 hr) after application. No consistent additional promotion of atrazine-14 C uptake was derived from the use of emulsifier concentrations above 2.0% in the oil of a 10% oil-in-water emulsion. With a few exceptions, paraffinic and naphthenic oils of comparable viscosities were about equally effective as penetrant aids for atrazine. For both the paraffinic and naphthenic series, the 100-sec viscosity oils appeared to be slightly better penetrant aids than comparable 70, 150, and 200-sec oils.

Type
Research Article
Information
Weed Science , Volume 22 , Issue 3 , May 1974 , pp. 220 - 226
Copyright
Copyright © 1974 by the Weed Science Society of America 

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References

Literature Cited

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