Early Postemergence Control of Yellow Woodsorrel (Oxalis stricta) with Residual Herbicides

S. Christopher Marble; Charles H. Gilliam; Glenn R. WehtjeMichelle Samuel-Foo

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Early Postemergence Control of Yellow Woodsorrel (Oxalis stricta) with Residual Herbicides

机译：Early Postemergence Control of Yellow Woodsorrel (Oxalis stricta) with Residual Herbicides

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Three experiments were conducted to evaluate early POST control of yellow woodsorrel using PRE-applied herbicides. In experiment 1, yellow woodsorrel was seeded at two dates in a commercial pine-bark substrate and grown until reaching either the cotyledon-one-leaf (C-1L) or two- to four-leaf (2-4L) growth stage. The herbicides isoxaben, indaziflam, and dimethenamid-p were applied at these growth stages. Two rates of isoxaben and indaziflam provided yellow woodsorrel control (> 80 reduction in freshweight FW) when applied at the C-1L stage; however, once yellow woodsorrel reached the 2-4L stage, indaziflam was the only herbicide that provided effective control at both rates tested. Experiments 2 and 3 were similar to experiment 1, except two labeled rates of dithiopyr were also evaluated. In experiment 2, all herbicides evaluated provided > 90 reduction in FW of yellow woodsorrel at the C-1L stage. Although no differences in FW were observed among any of the herbicide treatments when yellow woodsorrel were treated at the 2-4L stage, control ratings indicated that indaziflam provided the most effective yellow woodsorrel control. Experiment 3 results also indicated that isoxaben, indaziflam, and dithiopyr controlled yellow woodsorrel (> 95 reduction in FW) when treatments were applied at the C-1L stage, whereas dimethenamid-p reduced shoot FW 70. When yellow woodsorrel was treated after reaching the 2-4L stage, indaziflam provided the greatest control of any herbicide evaluated.

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《Weed technology: A journal of the Weed Science Society of America》 |2013年第2期|347-351|共5页
作者
S. Christopher Marble; Charles H. Gilliam; Glenn R. WehtjeMichelle Samuel-Foo;
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作者单位

Department of Horticulture, Auburn University, Auburn, AL 36849;

Department of Agronomy and Soils, Auburn University, Auburn, AL 36849;

IR-4 Southern Region Field Coordinator, Universityof Florida, Gainesville, FL 32611;

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正文语种英语
中图分类植物保护;
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Container-grown plants; dimethenamid-p; dithiopyrindaziflam; isoxaben; nursery crops; weed control;

Early Postemergence Control of Yellow Woodsorrel (Oxalis stricta) with Residual Herbicides

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