Paraquat Behavior as Influenced by 2, 4-DB in Peanut (<i>Arachis hypogaea</i>) and Selected Weeds1

Wehtje, Glenn; Wilcut, John W.; McGuire, John A.

doi:10.3146/i0095-3679-19-1-14

Cited by 12 publications

(10 citation statements)

References 5 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…2,4-DB (not exceeding 0.28 kg ae/ha) is commonly used in peanut (Arachis hYIJogaea L.) production in the Southeastern u.s. for the control of morningglories and other weeds (Wehtje et al 1992). It is also registered for use in soybean where the maximuln rate is 0.047 kg/ha.…”

Section: Introductionmentioning

confidence: 99%

Interaction of Glyphosate and 2,4-DB for the Control of Selected Morningglory (Ipomoeaspp.) Species

Wehtje

Walker

1997

Weed technol.

Self Cite

View full text Add to dashboard Cite

Interaction of glyphosate and 2,4-DB was evaluated in greenhouse and laboratory studies with respect to control of four species of annual morningglory. The greenhouse study included smallflower, pitted, palmleaf, and ivyleaf morningglory at three growth stages: seedling, juvenile, and vining. A series of glyphosate rates (0.28 to 1.26 kg ae/ha) and 2,4-DB (0.022 and 0.045 kg ae/ha) were applied alone, and in all possible two-way tank mixtures. Morningglory response to both glyphosate and 2,4-DB applied alone was species- and growth stage-dependent. All combinations were either additive or synergistic for control of pitted, palmleaf, and ivyleaf morningglory. Response of smallflower morningglory ranged from antagonistic to synergistic. Absorption and translocation of14C-2,4-DB was independent of the addition of glyphosate in all four species. By contrast, absorption of foliar-applied14C-glyphosate and translocation of14C from treated leaves to other plant parts were enhanced by the addition of 2,4-DB in all species except palmleaf morningglory. In palmleaf morningglory,14C-glyphosate absorption and translocation were independent of the addition of 2,4-DB. Absorption and translocation data were in agreement with greenhouse studies.

show abstract

Section: Introductionmentioning

confidence: 99%

Interaction of Glyphosate and 2,4-DB for the Control of Selected Morningglory (Ipomoeaspp.) Species

Wehtje

Walker

1997

Weed technol.

Self Cite

View full text Add to dashboard Cite

show abstract

“…Of these four herbicides, only imazapic and 2,4-DB are used over significant acreages (NASS, 2009). The 2,4-DB molecule is not readily absorbed or phytotoxic, but the secondary metabolite (2,4-D) resulting from beta oxidation is both mobile and phytotoxic (Wathana et al, 1972;Wehtje et al, 1992) in many species. Much research can be found that documents peanut plant injury and/or yield response to 2,4-DB and imazapic (Brecke and Stephenson, 2006;Grey and Wehtje, 2005;Grichar, 2007;Hicks et al, 1998;Wehtje et al, 1993;York et al, 1993), however, little research has been reported on the effects that herbicides may have on seed quality.…”

mentioning

confidence: 99%

Effect of Imazapic and 2,4-DB on Peanut Yield, Grade, and Seed Germination

Faircloth¹,

Prostko²

2010

Peanut Science

View full text Add to dashboard Cite

Recurrent problems with peanut seed germination and stand establishment have raised concerns about the potential effects of herbicides on peanut seed quality. Field trials were conducted in south Georgia in 2005 and 2006 to evaluate the effects of imazapic and 2,4-DB on peanut yield, grade, incidence of tomato spotted wilt virus (TSWV), and seed germination. Imazapic at 71 g ai ha 21 , applied at 30 and 40 days after planting (DAP), and 2,4-DB at 270 g ai ha 21 , applied at 75 or 90 DAP, had no effect on peanut yield, grade, incidence of TSWV, and seed germination when averaged over two locations (Dawson and Tifton) and three cultivars (Georgia Green, Georgia-01R, and C-99R). Normal cultivar yield variations were observed; however, Georgia-01R had reduced standard (25 C) and cold (15 C) germination when compared to the other cultivars.

show abstract

“…2,4-DB [4-(2,4-dichlorophenoxy)butanoic acid] (5,10,11,14). Depending on weed spectrum, each paraquat combination can economically and effectively control broadleaf weeds (3,12,15,16,17,18).…”

Section: Introductionmentioning

confidence: 99%

Effects of Paraquat and Alachlor on Peanut (Arachis hypogaea) Growth, Maturity, and Yield

Johnson¹,

Chamberlin

Todd

et al. 1993

Weed technol.

View full text Add to dashboard Cite

Studies were conducted in 1988, 1989, and 1992 in Plains, GA to measure effects of paraquat and alachlor on ‘Florunner’ peanut. Peanut treated with paraquat (0.14 kg ai/ha) plus alachlor (3.4 kg ai/ha) applied at vegetative emergence (VE), or paraquat plus alachlor VE followed by paraquat 28 days after emergence (DAE) were compared with a nontreated control. Both herbicide treatments reduced peanut foliage biomass at 65 DAE in 1989 and 1992. Herbicide treatments did not affect foliage biomass 90 DAE in 1988 and 122 DAE in 1989, but paraquat plus alachlor followed by paraquat reduced foliage biomass at 122 DAE in 1992. Pod biomass, measured at 90 and 65 DAE in 1988 and 1992, respectively, was reduced by herbicides. However, pod biomass did not differ among treatments 122 DAE in 1989 and 1992. Percent reflectance from the peanut canopy measured no effects from herbicides in 1988. However, in 1989 and 1992 herbicides applied sequentially reduced peanut canopy development. Peanut treated with a single herbicide and sequentially took longer to mature. Once optimum maturity was reached, peanut yields were not reduced.

show abstract

Paraquat Behavior as Influenced by 2, 4-DB in Peanut (Arachis hypogaea) and Selected Weeds1

Cited by 12 publications

References 5 publications

Interaction of Glyphosate and 2,4-DB for the Control of Selected Morningglory (Ipomoeaspp.) Species

Interaction of Glyphosate and 2,4-DB for the Control of Selected Morningglory (Ipomoeaspp.) Species

Effect of Imazapic and 2,4-DB on Peanut Yield, Grade, and Seed Germination

Effects of Paraquat and Alachlor on Peanut (Arachis hypogaea) Growth, Maturity, and Yield

Contact Info

Product

Resources

About