Soybean (<i>Glycine max</i>) Response to Simulated Drift from Selected Sulfonylurea Herbicides, Dicamba, Glyphosate, and Glufosinate

Al‐Khatib, Kassim; Peterson, Dallas E.

doi:10.1017/s0890037x00041713

Cited by 119 publications

(151 citation statements)

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“…Dicamba's reputation for off -target movement due to drift and volatility has been well documented (Al-Khatib and Peterson, 1999;Behrens and Lueschen, 1979). In the southeast, peanut is grown in close proximity to both soybean and cotton.…”

Section: Introductionmentioning

confidence: 99%

“…and cotton (Gossypium hirsutum L.) (Behrens et al 2007;Subramanian et al 1997). Currently, dicamba is registered for postemergence broadleaf weed control use in various grass crops such as field corn (Zea mays L.), sorghum [Sorghum bicolor (L.) Moench], and wheat (Triticum aestivum L.) (Anonymous, 2011).Dicamba's reputation for off -target movement due to drift and volatility has been well documented (Al-Khatib and Peterson, 1999;Behrens and Lueschen, 1979). In the southeast, peanut is grown in close proximity to both soybean and cotton.…”

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confidence: 99%

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Peanut Yield Response to Dicamba

Prostko¹,

Grey²,

Marshall³

et al. 2011

Peanut Science

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Research was conducted at eight locations across the United States peanut belt during 2008 to evaluate peanut response to postemergence applications of dicamba. Dicamba was applied at 0, 40, 70, 140, 280 and 560 g ai/ha at 30, 60, and 90 days after peanut planting (DAP). In 5 of 8 locations, peanut yield losses were greater when dicamba was applied at 30 and 60 DAP when compared to 90 DAP. Estimated yield losses for dicamba applied at 40 g ai/ha ranged between 2% to 29%. Estimated yield losses for dicamba applied at 560 g ai/ha ranged between 23% to 100%. These data may aid peanut growers in making appropriate management decisions in situations where offtarget movement of dicamba has occurred or sprayer contamination is suspected.Key Words: Arachis hypogaea L., crop tolerance, drift, herbicide injury, sprayer contamination.Concerns regarding glyphosate-resistant weeds has led to an interest in developing alternative herbicide-tolerant crops. Dicamba-tolerance is being developed in several broadleaf crops including soybean [Glycine max (L.) Merr.] and cotton (Gossypium hirsutum L.) (Behrens et al. 2007;Subramanian et al. 1997). Currently, dicamba is registered for postemergence broadleaf weed control use in various grass crops such as field corn (Zea mays L.), sorghum [Sorghum bicolor (L.) Moench], and wheat (Triticum aestivum L.) (Anonymous, 2011).Dicamba's reputation for off -target movement due to drift and volatility has been well documented (Al-Khatib and Peterson, 1999;Behrens and Lueschen, 1979). In the southeast, peanut is grown in close proximity to both soybean and cotton. Thus, the adoption of dicamba-tolerance in these crops increases the probability of drift, volatilization, and tank contamination problems that could negatively influence peanut development and yield.Peanut response to dicamba has not been well documented. Dicamba applied at approximately 2 g/ha had no effect on peanut yield in one field trial (Prostko et al. 2009). However, other studies on the control of volunteer peanut indicated that peanut is not tolerant of dicamba (York et al. 1994). In a related forage crop, rhizome peanut (Arachis glabrata Benth) yields were significantly reduced by a foliar application of dicamba + 2,4-D (Ferrell et al. 2006). Other systematic studies on the influence of dicamba rate and timing on peanut have not been published in the literature. Therefore, the objective of this research was to quantify the effects of various rates of dicamba, applied at 30, 60 or 90 days after planting (DAP), on peanut yield. Materials and MethodsField trials were conducted at eight locations across the United States peanut belt during 2008. A complete description of these locations is presented in Table 1. Production and pest management practices were followed according to local Cooperative Extension recommendations.All trials were conducted in a randomized complete block design with a three (application timing) by six (dicamba rate) factorial arrangement of treatments. Dicamba timings were 30, 60, and 90 DAP and d...

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Section: Introductionmentioning

confidence: 99%

mentioning

confidence: 99%

Peanut Yield Response to Dicamba

Prostko¹,

Grey²,

Marshall³

et al. 2011

Peanut Science

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“…5G). Al-Khatib and Peterson [25] found dead apical meristems when soybeans were exposed to low concentrations of a sulfonylurea herbicide at the 2-3 trifoliate expansion stage. This induced side branching, which caused the plants to take longer to mature with a minimal loss in yield.…”

Section: Toxicity Changes Based On Plant Developmentmentioning

confidence: 99%

Comparing effects of low levels of herbicides on greenhouse‐ and field‐grown potatoes (Solanum tuberosumL.), soybeans (Glycine maxL.), and peas (Pisum sativumL.)

Pfleeger

Olszyk

Lee

et al. 2010

Enviro Toxic and Chemistry

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Although laboratory toxicology tests are generally easy to perform, cost effective, and readily interpreted, they have been questioned for their environmental relevance. In contrast, field tests are considered realistic while producing results that are difficult to interpret and expensive to obtain. Toxicology tests were conducted on potatoes, peas, and soybeans grown in a native soil in pots in the greenhouse and were compared to plants grown outside under natural environmental conditions to determine toxicological differences between environments, whether different plant developmental stages were more sensitive to herbicides, and whether these species were good candidates for plant reproductive tests. The reproductive and vegetative endpoints of the greenhouse plants and field-grown plants were also compared. The herbicides bromoxynil, glyphosate, MCPA ([4-chloro-2-methylphenoxy] acetic acid), and sulfometuron-methyl were applied at below field application rates to potato plants at two developmental stages. Peas and soybeans were exposed to sulfometuron-methyl at similar rates at three developmental stages. The effective herbicide concentrations producing a 25% reduction in a given measure differed between experimental conditions but were generally within a single order of magnitude within a species, even though there were differences in plant morphology. This study demonstrated that potatoes, peas, and soybeans grown in pots in a greenhouse produce phytotoxicity results similar to those grown outside in pots; that reproductive endpoints in many cases were more sensitive than vegetative ones; and that potato and pea plants are reasonable candidates for asexual and sexual reproductive phytotoxicity tests, respectively. Plants grown in pots in a greenhouse and outside varied little in toxicity. However, extrapolating those toxicity results to native plant communities in the field is basically unknown and in need of research.

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“…Recently, several farmers in the southern US have observed halosulfuron injury in soybean through off-target movement of halosulfuron when applied to rice fields (Whiting, personal observation). Off-target movement of herbicides during application can range from 0.01 to 10% of the applied rate [6,7]. Although these drift rates appear to be sublethal, the injury can be severe in susceptible crops, depending on the growth stage.…”

Section: Introductionmentioning

confidence: 99%

Response of Soybean to Halosulfuron Herbicide

Nandula

Poston

Reddy³

et al. 2009

International Journal of Agronomy

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Recently, halosulfuron injury in soybean through off-target movement of halosulfuron when applied to rice fields has been reported. Sulfonylurea-tolerant (ST) soybean varieties have enhanced tolerance for sulfonylurea herbicides and might provide an option for mitigating injury to soybean from halosulfuron drift. Experiments were conducted to evaluate the effect of halosulfuron on growth and yield of selected soybean varieties with ST trait alone and stacked with glyphosate resistance trait. Soybean plants were treated with halosulfuron at 0, 0.0043, 0.0087, 0.017, 0.034, and 0.069 kg ai/ha rate at the V3 growth stage in the greenhouse and at 0.034 kg/ha rate (labeled use rate in rice) in the field studies. All soybean varieties containing the ST trait exhibited some halosulfuron injury, but survived the halosulfuron application in the greenhouse. In field studies, a single POST application of halosulfuron at 0.034 kg/ha to soybean at three-trifoliolate leaf stage or at full bloom stage resulted in halosulfuron injury to a certain extent regardless of ST trait. Halosulfuron did not have a significant effect on yield of ST varieties compared to their respective nontreated controls. Severe halosulfuron injury in two non-ST varieties resulted in yield loss.

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Soybean (Glycine max) Response to Simulated Drift from Selected Sulfonylurea Herbicides, Dicamba, Glyphosate, and Glufosinate

Cited by 119 publications

References 8 publications

Peanut Yield Response to Dicamba

Peanut Yield Response to Dicamba

Comparing effects of low levels of herbicides on greenhouse‐ and field‐grown potatoes (Solanum tuberosumL.), soybeans (Glycine maxL.), and peas (Pisum sativumL.)

Response of Soybean to Halosulfuron Herbicide

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