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Interaction of Prometryne and Phorate on Bean

Published online by Cambridge University Press:  12 June 2017

John P. Parks ,
Bryan Truelove  and
Gale A. Buchanan
John P. Parks
Affiliation:
Dep. of Agron. and Soils, Auburn Univ., Auburn, Alabama 36830
Bryan Truelove
Affiliation:
Dep. of Bot. and Microbiol, Auburn Univ., Auburn, Alabama 36830
Gale A. Buchanan
Affiliation:
Dep. of Agron. and Soils, Auburn Univ., Auburn, Alabama 36830
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Abstract

The absorption by bean (Phaseolus vulgaris L. ‘Black Valentine’) of 2,4-bis-(isopropylamino)-6-(methylthio)-s-triazine (prometryne) at 1 μM concentration was increased in the presence of 10, 1, or 0.1 μM O,O-diethyl S-(ethylthio) methyl phosphorodithioate (phorate). An increase in absorption of 10 μM prometryne with addition of 1 μM phorate was recorded after 72 hr, but no increase was seen after 96 hr of absorption. Both prometryne and phorate inhibited state 3 respiration of mitochondria isolated from 6-day-old bean hypocotyls. Inhibition increased with increasing pesticide concentrations. When the pesticides were applied simultaneously, no interactions affecting state 3 respiration were observed. Neither prometryne nor phorate alone significantly affected phosphate accumulation by bean shoot mitochondria.

Type
Research Article
Information
Weed Science , Volume 20 , Issue 1 , January 1972 , pp. 89 - 92
Copyright
Copyright © Weed Science Society of America 

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References

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