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Effectiveness of Glyphosate Mixed With Soil-Active HerbicidesAuthor(s): James D. Haywood; Thomas W. Melder
Source: Res. Note SO-365. New Orleans, LA: U.S. Department of Agriculture, Forest Service, Southern Forest Experiment Station. 5 p.
Publication Series: Research Note (RN)
Station: Southern Forest Experiment Station
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DescriptionBroadcasting mixtures of glyphosate and soil-active herbicides over loblolly pine (Pinus taeda L.) seedlings may control established weeds and emerging weed seedlings better than either glyphosate or soil-active herbicides alone. However, herbicides will injure young pines if applied improperly. To examine seedling injury, we broadcast two rates of glyphosate, 0.4 and 0.8 lb acid equivalent per acre, alone and mixed with hexazinone, oxyfluorfen, or simazine, over newly planted loblolly pine seedlings and herbaceous competitors. Oxyfluorfen and simazine did not increase pine mortality, but glyphosate alone or in mixtures did. Glyphosate and hexazinone applied alone or mixed produced the most promising results for weed control.
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CitationHaywood, James D.; Melder, Thomas W. 1991. Effectiveness of Glyphosate Mixed With Soil-Active Herbicides. Res. Note SO-365. New Orleans, LA: U.S. Department of Agriculture, Forest Service, Southern Forest Experiment Station. 5 p.
KeywordsHerbaceous weed control, hexazinone, loblolly pine seedlings, oxyfluorfen, Pinus taeda L., simazine
- Influence of Fertilization, Weed Control, and Pine Litter on Loblolly Pine Growth and Productivity and Understory Plant Development Through 12 Growing Seasons
- Tolerance of loblolly pine seedlings to glyphosate
- Effects of aerially applied glyphosate and hexazinone on hardwoods and pines in a loblolly pine plantation
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