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Differential Tolerance of Sweet Potato (Ipomoea batatas) Clones to Metribuzin

Published online by Cambridge University Press:  12 June 2017

Carl E. Motsenbocker  and
Thomas J. Monaco
Carl E. Motsenbocker
Affiliation:
Dep. Hortic. Sci., North Carolina State Univ., Raleigh, NC 27695-7609
Thomas J. Monaco
Affiliation:
Dep. Hortic. Sci., North Carolina State Univ., Raleigh, NC 27695-7609
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Abstract

Sweet potato clones were evaluated for metribuzin tolerance in field and greenhouse studies. ‘Tinian’ was the most tolerant and ‘SC-1149-19’ and ‘J-2’ were the most susceptible clones. ‘Jewel’, a clone widely grown commercially, was sensitive to metribuzin in the field and greenhouse. ‘Sumor’ and ‘White Triumph’ exhibited intermediate metribuzin tolerance. All metribuzin application-by-rate treatments reduced plant stands, caused season-long crop injury, and reduced yields. Metribuzin applied 3 wk posttransplant at 1.1 kg ha−1 did not reduce total yield of Tinian. Total yield of all the clones except Tinian were reduced by metribuzin regardless of timing or rate.

Keywords

Metribuzin, 4-amino-6-(1,1-dimethylethyl)-3-(methylthio)-1,2,4-triazin-5(4H)-onesweet potato, Ipomoea batatas (L.) Lam. Jewel, J-2, SC 1149-19, Sumor, Tinian, White TriumphHerbicide toleranceselectivitypreemergencepostemergenceasymmetrical triazine
Type
Research
Information
Weed Technology , Volume 7 , Issue 2 , June 1993 , pp. 349 - 354
Copyright
Copyright © 1993 Weed Science Society of America 

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