Soybean Tolerance to Metribuzin

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...

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Bibliographic Details
Published in:Weed science 1973-07, Vol.21 (4), p.308-309
Main Authors: Coble, H. D., Schrader, J. W.
Format: Article
Language:English
Subjects:
Herbicide resistance
Herbicides
Millet
Organic soils
Planting
Rain
Sandy loam soils
Soil organic matter
Soybeans
Weed control
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Summary: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.
ISSN:0043-1745
1550-2759
DOI:10.1017/S0043174500027053