Soybean (<i>Glycine max</i>) Tolerance to 2,4-D Ester Applied Preplant

Krausz, Ronald F.; Kapuśta, George; Matthews, Joseph L.

doi:10.1017/s0890037x00037970

Cited by 8 publications

(16 citation statements)

References 25 publications

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“…Lower variance in the yield data suggests that plants either recovered from herbicide injury or that the plants that survived to maturity may have escaped prolonged herbicide effects. Soybean injury from preplant applications of 2,4-D has been shown to decrease over time, suggesting that some crops can fully recover from early-season herbicide injury (Krausz et al 1993). The data in Table 2 suggest that some level of sesame stand loss from applications of 2,4-D and dicamba can occur without affecting yield.…”

Section: Resultsmentioning

confidence: 99%

“…], and rapeseed ( Brassica napus L.) if planting is not sufficiently delayed (Moyer et al 1992; York et al 2004). The need to delay planting following 2,4-D and dicamba applications has been well documented for cotton and soybean (Bruce and Kells 1990; Everitt and Keeling 2007; Keeling and Henniger et al 1989; Krausz et al 1993; Thompson et al 2007; Wilson and Worsham 1988; York et al 2004). However, there are no data in the literature documenting sesame sensitivity to these herbicides or the nature of the sesame’s response to them.…”

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confidence: 99%

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Sesame Tolerance to Preplant Applications of 2,4-D and Dicamba

Sperry¹,

Ferrell²,

León

et al. 2017

Weed Technol

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Two separate experiments were conducted in 2015 and 2016 in Citra, FL to investigate the effects of preplant application timing of 2,4-D and dicamba on sesame stand and yield. Nonlinear regression analysis was performed to determine the application timing that caused 10% stand or yield reduction (GR10) compared to the nontreated control (NTC) and expressed as d before planting (DBP; longer intervals indicate more injury). Likewise, regression analysis was used to determine sesame stand that resulted in 10% yield reduction (YR10) expressed as plants m−1row. Stand measured 3 wk after planting (WAP) revealed 2,4-D applied at 0.53 kg ae ha−1to be the least injurious treatment to sesame stand (GR10=6.4 DBP). Conversely, dicamba at 1.12 kg ha−1produced a GR10of 15.7 DBP for sesame stand at 3 WAP. 2,4-D applied at 0.53 and 1.06 kg ha−1and dicamba applied at 0.56 kg ha−1had the lowest GR10for yield of 2, 3.7, and 3 DBP, respectively. Dicamba applied at 1.12 kg ha−1proved to be the most injurious treatment to yield, which produced a GR10value of 10.3 DBP. To simulate possible stand losses associated with dicamba or 2,4-D and the subsequent effect on yield, a separate experiment was conducted in which sesame was thinned to various plant densities and yield was recorded to determine the relationship between plant stand and seed yield. The regression analysis of these data was then compared to that of the experiment treated with 2,4-D and dicamba to separate any physiological effects of the herbicides that would lead to yield reduction from yield effects due to stand loss only. Rate constants were compared and no statistical differences were detected between herbicide and non-herbicide treatments, suggesting that yield reductions that occur from preplant applications of 2,4-D and dicamba were purely due to stand reductions.

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Section: Resultsmentioning

confidence: 99%

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confidence: 99%

Sesame Tolerance to Preplant Applications of 2,4-D and Dicamba

Sperry¹,

Ferrell²,

León

et al. 2017

Weed Technol

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“…This approach allows the grower to begin with a clean field and provides an opportunity for the crop to gain a competitive advantage over weeds. EPP applications allow the producer to apply herbicides while weeds are smaller and usually more susceptible to herbicides (Krausz et al 1993).…”

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Soybean Tolerance to Early Preplant Applications of 2,4-D Ester, 2,4-D Amine, and Dicamba

Thompson¹,

Steckel²,

Ellis

et al. 2007

Weed technol.

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Preplant applications of two 2,4-D formulations and dicamba were evaluated for injury to no-till soybean. Herbicides applied 28 or 21 d before planting (DBP) at 0.56 kg ae/ha for the 2,4-D formulations and 0.28 kg ae/ha for dicamba did not injure soybean. At 14 DBP soybean injury was lower (< 6%) with applications of 2,4-D than with dicamba (13% to 17%). Injury increased when herbicides were applied at 7 DBP with soybean injury from both 2,4-D (< 11%) and dicamba (< 38%). When the herbicides were applied at planting soybean injury was < 18% with the 2,4-D formulations and < 73% with dicamba. Soybean yields were unaffected by the injury from herbicides applied 21, 14, and 7 DBP. However, soybean yield was decreased to 870 kg/ha in 2005 when dicamba was applied at planting compared to the nontreated check (1,950 kg/ha)

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“…The adoption of conservation-tillage practices and glyphosate-resistant (GR) crops over the last several decades has led to an increased reliance on herbicides as one of the primary methods of weed control (Culpepper et al 2000; DeVore et al 2013; Krausz et al 1993; Young 2006). Glyphosate-resistant crops have been rapidly adopted since their release in 1996 and have enabled producers to simplify weed management by providing control of a broad spectrum of common weeds with little or no injury to the crop (Fernandez-Cornejo and Mcbride 2002).…”

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Influence of Tillage Method on Management ofAmaranthusSpecies in Soybean

et al. 2017

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A field study was conducted in 2014 and 2015 in Arkansas, Illinois, Indiana, Ohio, Tennessee, Wisconsin, and Missouri to determine the effects of tillage system and herbicide program on season-long emergence of Amaranthus species in glufosinate-resistant soybean. The tillage systems evaluated were deep tillage (fall moldboard plow followed by (fb) one pass with a field cultivator in the spring), conventional tillage (fall chisel plow fb one pass with a field cultivator in the spring), minimum tillage (one pass of a vertical tillage tool in the spring), and no-tillage (PRE application of paraquat). Each tillage system also received one of two herbicide programs; PRE application of flumioxazin (0.09 kg ai ha ). The deep tillage system resulted in a 62, 67, and 73% reduction in Amaranthus emergence when compared to the conventional, minimum, and no-tillage systems, respectively. The residual herbicide program also resulted in an 87% reduction in Amaranthus species emergence compared to the POST-only program. The deep tillage system, combined with the residual program, resulted in a 97% reduction in Amaranthus species emergence when compared to the minimum tillage system combined with the POST-only program, which had the highest Amaranthus emergence. Soil cores taken prior to planting and herbicide application revealed that only 28% of the Amaranthus seed in the deep tillage system was placed within the top 5-cm of the soil profile compared to 79, 81, and 77% in the conventional, minimum, and no-tillage systems. Overall, the use of deep tillage with a residual herbicide program provided the greatest reduction in Amaranthus species emergence, thus providing a useful tool in managing herbicide-resistant Amaranthus species where appropriate. Nomenclature: Flumioxazin; glufosinate; metolachlor; paraquat; Amaranthus; soybean, Glycine max (L.) Merr. Key words: moldboard plow, vertical tillage, seedbank, soil-applied residual.En 2014 y 2015, se realizó un estudio de campo en Arkansas, Illinois, Indiana, Ohio, Tennessee, Wisconsin, y Missouri para determinar los efectos del sistema de labranza y el programa de herbicidas sobre la emergencia de especies de Amaranthus a lo largo de la temporada de crecimiento en soja resistente a glufosinate. Los sistemas de labranza evaluados fueron labranza profunda (arado de vertedera en el otoño seguido por (fb) un pase de cultivador de campo en la primavera), labranza convencional (arado de cincel en el otoño seguido de un pase de cultivador de campo en la primavera), labranza mínima (un pase de una herramienta de labranza vertical en la primavera), y cero labranza (aplicación PRE de paraquat). Cada sistema de labranza también recibió uno de dos programas de herbicidas; aplicación PRE de flumioxazin (0.09 kg ai ha ). El sistema de labranza profunda resultó en una reducción de 62, 67, y 73% en la emergencia de Amaranthus cuando se comparó con los sistemas de labranza convencional, mínima, y cero, respectivamente. El programa con un herbicida residual también resultó en una reducción de 87...

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Soybean (Glycine max) Tolerance to 2,4-D Ester Applied Preplant

Cited by 8 publications

References 25 publications

Sesame Tolerance to Preplant Applications of 2,4-D and Dicamba

Sesame Tolerance to Preplant Applications of 2,4-D and Dicamba

Soybean Tolerance to Early Preplant Applications of 2,4-D Ester, 2,4-D Amine, and Dicamba

Influence of Tillage Method on Management ofAmaranthusSpecies in Soybean

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