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Soybean Tolerance to Metribuzin

Published online by Cambridge University Press:  12 June 2017

H. D. Coble  and
J. W. Schrader
H. D. Coble
Affiliation:
Crop Sci. Dep., N.C. State Univ., Raleigh, N.C. 27607
J. W. Schrader
Affiliation:
Crop Sci. Dep., N.C. State Univ., Raleigh, N.C. 27607
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Abstract

Tolerance of greenhouse-grown soybean (Glycine max (L.) Merr.) to preemergence applications of 4-amino-6-tert-butyl-3-(methylthio)-as-triazin-5(4H)one (metribuzin) was greatly influenced by herbicide rate, soil organic matter, and simulated rainfall after treatment. Planting depth affected tolerance in cases where effects of the other variables were marginal. Severe injury was observed with 1.1% soil organic matter except at the 0.56 kg/ha herbicide rate with no rainfall for 10 days after treatment. Tolerance increased with increasing soil organic matter to the point where no injury occurred at 16.8 or 40.0% organic matter, even at herbicide rates up to 1.68 kg/ha with 1.25 cm simulated rainfall immediately after treatment.

Type
Research Article
Information
Weed Science , Volume 21 , Issue 4 , July 1973 , pp. 308 - 309
Copyright
Copyright © 1973 Weed Science Society of America 

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References

Literature Cited

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